earth tech
[software and hardware technology originating from or otherwise pertinent to planet earth]
Tuesday, October 13, 2009
Sticky Bits
http://us3.php.net/manual/en/features.safe-mode.php#55581
- 4000 (the setuid bit)
- Executable files with this bit set will run with effective uid set to the uid of the file owner. Directories with this bit set will force all files and sub-directories created in them to be owned by the directory owner and not by the uid of the creating process, if the underlying file system supports this feature
see chmod(2) and the suiddir option to mount(8).
Labels: filesystem, linux, unix
Wednesday, September 23, 2009
KNOPPIX V5.1.1 CD 2007-01-04 EN to USB
http://www.pendrivelinux.com/installing-usb-knoppix-51-using-linux/
So we have found out that the KNOPPIX 6.0.1 release is a BETA release, and hence does not have some features we want - specifically, it's not set up for persistence; there seems to be no way to get it to save the state and the user directories to persistent storage.
Furthermore, we have decided to install the older, released version, KNOPPIX v5.1.1, and have downloaded the KNOPPIX v5.1.1 ISO to the 2nd partition of the 4G USB stick which we installed v6.0.1.
Since the KNOPPIX v6.0.1 was missing some critical tools - telnet, K3B, etc - we have rebooted the HP machine called 'box' under Damn Small Linux (DSL) to perform this procedure.
The procedure is:
- mount USB pendrive partition 1 (the VFAT partition with the CD ISO image for v6.0.1) into the DSL file system.
- mount USB pendrive partition 2 (the ext3 partition with the copy of KNOPPIX_V5.1.1CD-2007-01-04-EN.iso) into the host (DSL) file system
- copy the KNOPPIX v5.1.1 ISO file system from USB pendrive partition 2 to USB pendrive partition 1
- perform the install tweaks given in USB KNOPPIX 5.1.1 persistent install from Linux | USB Pen Drive Linux on USB pendrive partition 1.
This should make the pen drive boot KNOPPIX 5.1.1 with persistence.
Note that both partitions on the existing USB pen drive are formatted as described in the installation document referenced above. That is, partition 1 is a 750M FAT16 partition for the CD image, and partition 2 is the remainder of the pen drive space (~3G in ths case) dedicated as an ext3 (Linux) file system.
Once the pen drive is bootable and persistent with KNOPPIX 5.1.1, it will be desirable to make partition 2 on the USB pen drive auto mount as the /home directory tree of the new system.
Labels: knoppix, linux, pendrive
Tuesday, September 8, 2009
KNOPPIX v6.0.1 to USB drive
http://www.pendrivelinux.com/installing-usb-knoppix-51-using-linux/
Used the instructions as shown for KNOPPIX v5.1.1 excepting only that I found no /cdrom directory on KNOPPIX v6.0.1. Used the /mnt-system directory instead as that appeared to be where the CD was mounted (according to df -h).
Testing Pendrive boot of KNOPPIX v6.0.1 this time 2009-09-07 EST 22:25.
Labels: 0x0000, knoppix, linux, pendrive, usb, v6.0.1, x86
Monday, September 7, 2009
Here we go again...
Posting this from a disc-less host, using a KNOPPIX V6.0.1 LiveCD downloaded to the Vista host using BitTorrent / BitComet.
This KNOPPIX disc divined the correct network configuration from the USR5430 Ethernet / WiFi bridge, which is configured as part of an AdHoc wireless (802.11) LAN which has an Internet backhaul (configured using ICS) over a Cricket CDMA USB BroadBand modem on the Vista box.
The KNOPPIX network configuration routine psychically determined all that and configured it without having to ask me any stupid questions. That, all by itself, is freaking amazing. Contrast it, for instance, with DamnSmallLinux (DSL) [v?] which I just argued with all weekend about the identical configuration. The DSL solution required adding a eth0:1 interface as root to begin with – it got worse from there. …
So it just booted up and ran without question, so far pretty much everything working, it appears.
Notable Factoids
- no spkrs on this box, so not sure about sound
- spell checker in Iceweasel is set for German
- Iceweasel is the default browser
- Iceweasel comes with the NoScript plugin already installed (!!!)
- a /slick/ new [to me] desktop environment called ‘Lightweight X11 Desktop Environment’ (LXDE) - really nice
Oddities
Is it true that USB devices only boot if they are formated FAT/32? Some weirdness going on there. If TRUE, I could put my PortableApps and my KNOPPIX on the same 4G USB stick? Maybe?
Glitches
For some reason, the 2nd & 3rd times I tried to boot this CD on this box, it hung during the X11 initialization - I believe(d) that some BIOS changes I made may have affected this, so the current settings changed are:
- Legacy USB support: enabled
- Startup Diagnostics screen: disabled
These settings may not matter, or may be specific to this system. They are recorded here so I can refer to them later, if necessary ;)
The hanging of the X11 startup is critical, since the system will shut itself down when X11 exits, and I was unable to find a way to interrupt the shutdown from the console during the time the X server was running. This means that if X hangs on this CD, the system shuts down after a short timeout.
Out of 4 boot-up attempts, the two that have worked (first and fourth) were both simple "put the CD in and hard boot w/o going to setup or boot-device select menu" sequences.
Video Resolution Bug
The screen resolution only seems to go up to 800x600. This has to be an incorrectly selected video device driver, since this same video card will go up to 1600x1200 and has done so in the past.
Labels: 0x0000, iceweasel, knoppix, linux, lxde, network, pendrive, usb, v6.0.1, x86
Wednesday, September 2, 2009
ASCII 0x07 - The BEL Character
http://linux.com/learn/docs/ldp/811-Visual-Bell
The Visible bell mini-Howto describes the measures necessary to disable audio processing of the ASCII system bell (0x07 – BEL) character as a console "beep" in various shells and applications, including Bash and Emacs. under Linux.
Labels: 0x0000, ascii, bash, bell, emacs, howto, linux, shell, visual-bell
Tuesday, July 14, 2009
Bash PS1 Prompt Set [correction]
http://www.gnu.org/software/bash/manual/bashref.html
## ## Set that annoying Cygwin Bash prompt...;) ## ## There was an error in this string the previously ## published version - here is the corrected version. ## This is Bash shell script code; it should go in the ## file ~/.bashrc in the user's HOME directory - it ## could also go in /etc/bashrc ## export PS1='\[\033[32m\]\u@\h: \[\033[33m\w\033[0m\] \$'
Labels: 0x0000, bash, linux, script, shell, terminal
Sunday, May 24, 2009
PHP Modules: Finding Syntax Errors and Module Dependencies
In constructing a web application with more than 2 PHP source modules, I found that it is useful to have a quick and easy way of finding a syntax error that may exist in one (or more) of a list of included modules.
Getting a List of PHP Includes
There is a function in PHP for this, which we will get back to in a moment. For right now I wanted to address some things we can do at a Bash prompt to troubleshoot why a script may not be sending any output to the browser on STDOUT.
That's a very common situation when you're working on a large application with many modules. It becomes important in those situations to be meticulous about syntax checking each change in any code before making additional changes.
I've been using the 'Lint' mechanism provided by PHP to syntax check PHP source code. It works like this:
$php -l <fileName>
Now, some of you might already be seeing the implications of this. Hows about:
$for fn in \
`grep require frmPlayerInformation_body.09.inc\
| perl -ne '/\"([a-zA-Z0-9.]+)\"\;/ && print "$1\n";'` ;;
do
echo $fn ;;
php -l $fn ;;
echo "########" ;;
done
The implications for scripting this operation from the command line are clear.
PHP provides a function to get a list of module dependencies for a running script. It's called
get_included_files()
… and here's the URL for the docs: http://us2.php.net/manual/en/function.get-included-files.php
Problems with this Approach
There is at least one serious deficiency inherent in using the require, require_once, include, and include_once directives as the sole indicators of module dependency; that is that, simply, the modules which are required or "included" due to HTML element attribute values.
Examples include the ACTION attrubute value(s) of HTML FORM element(s), the SRC attribute values for SCRIPT elements. and so on. IFRAME and LINK elements are also among those that can cause a module dependency within the HTML, CSS, or Javascript layer(s) generated by PHP code of a site.
Labels: 0x0000, bash, code, css, html, javascript, linux, perl, php, script, source, webappdev
Saturday, May 16, 2009
Transparent SSH Login
Labels: 0x0000, bash, gpg, linux, perl, php, script, shebang shell, SSH, ssh-add, ssh-agent, ssh-copy-id, vnc
Thursday, May 14, 2009
Standard I/O Redirection in Perl
http://perldoc.perl.org/perlop.html#Quote-Like-Operators
This is an excerpt from the Perl manuals at perlDoc.perl.org concerning redirection of STDOUT and STDERR in Perl:
Because backticks do not affect standard error, use shell file descriptor syntax (assuming the shell supports this) if you care to address this. To capture a command's STDERR and STDOUT together:
$output = `cmd 2>&1`;To capture a command's STDOUT but discard its STDERR:
$output = `cmd 2>/dev/null`;To capture a command's STDERR but discard its STDOUT (ordering is important here):
$output = `cmd 2>&1 1>/dev/null`;To exchange a command's STDOUT and STDERR in order to capture the STDERR but leave its STDOUT to come out the old STDERR:
$output = `cmd 3>&1 1>&2 2>&3 3>&-`;To read both a command's STDOUT and its STDERR separately, it's easiest to redirect them separately to files, and then read from those files when the program is done:
system("program args 1>program.stdout 2>program.stderr");The STDIN filehandle used by the command is inherited from Perl's STDIN. For example:
open BLAM, "blam" || die "Can't open: $!"; open STDIN, "<&BLAM"; print `sort`;will print the sorted contents of the file "blam".
The I/O Operators manual also has some interesting information about standard file I/O in Perl.
Labels: 0x0000, bash, example, linux, perl, source
Wednesday, May 13, 2009
Detecting active VNC server instances
I needed something to tell me what VNC server (vncserver()) instances were running, and on which DISPLAY ports, and with what resolution(s) (geometry), so I wrote one. Here is the HTMLized Perl source code:
#!/usr/bin/perl -w ###################################################################### ## FILE: findvncport.pl ## DESC: display information about VNC server instances ## VERS: 01 ## DATE: 2009-05-13 ## AUTH: pdw@thesoftwaremaster.com ############################################################################## ## USAGE NOTES: ## ## This is a script to find out the connection port number and screen ## geometry of any VNC server instances currently running on a host. ## ## This functionality is most useful to a user who needs to know what VNC ## server instance(s) is(are) running, and on what port(s) - E.G. at logon ## (to a shell) time when a vncserver has been left running. ## ## For convenience, the geometry of the X interface, the PID of Xvnc (the ## actual X server invoked by vncserver), and such other info as we can ## glean from the process listing on the host. ## ## Note that this script only returns information about VNC instances ## running under the UID of the user who runs the script. The value of ## the environment variable $USER is used to filter the process listing. ## The user's $UID value is displayed, but is not used. ## ## This program is designed to be run on a remote, ssh-accessible host ## computer during the login and user account initialization process. ## ## EXAMPLE: ## ## I place this script in the .bash_login shell script that runs at user ## login. ## ## ## _TODO_: there is no buglist, yet, but there are some things need done to ## this script right to begin with (i.e. the functionality is ## marginal, and will almost certainly "break" the first time someone ## tries to use it on some other platform or environment. First on ## the list of things to do must be: Fix the regular expression ## parsing which finds the data in the process listing. As the code ## is now, these regex statements will break e.g. if the Xvnc command ## line doesn't look like it expects. 2nd on the list has to be the ## addtion of command line parameters to modify the output of the ## script. :_TODO_ ## ############################################################################# ## REVISION HISTORY: ## ## 01: 2009-05-13 pdw ## Initial version ## ############################################################################# ## ## Load up some environmental info... $curruid = `echo \$UID`; $curruser = `echo \$USER`; @processes = `ps x -u \$USER`; chomp($curruid); chomp($curruser); ## @displays gets the data about whatever VNC displays are running @displays = (); while ($_ = shift(@processes)) { my $d = {}; my $found = 0; chomp; next unless ($_); next unless (/^\s*(\d+).+Xvnc\s*(\:\d+)/) && ( $display = $2, $vncpid = $1 ); # get desktop m/-desktop(.+)-httpd/ && ($desktop = $1); m/-geometry\s+(\d+x\d+)/ && ( $geometry = $1 ); m/-depth\s+(\d+)/ && ( $depth = $1 ); $d = { 'Display' => $display, 'VNC PID' => $vncpid, 'Desktop' => $desktop, 'Geometry' => $geometry, 'Depth' => $depth, }; push(@displays, $d); } ## Display what we found out print "VNC server info for USER \'$curruser\':\n"; if (scalar(@displays)) { foreach my $disp (@displays) { foreach my $k (keys(%$disp)) { print" $k: \t".$disp->{$k}."\n"; } } } else { print " VNC server not found in process listing. "; }
Labels: bash, linux, perl, shebang, shell, source, tightvnc, vnc, x, xorg.conf
Wednesday, May 6, 2009
ls2csv.pl
#!/usr/bin/perl -w # # ls2csv.pl - show a listing of the PHP file # (*.inc and *.php) # as a CSV table; no table headings included in # output; no params defined # sub create_listing($) { my $xtn = shift; my @files = `ls -ghoG *.$xtn`; foreach my $f (@files) { chomp($f); $f =~ s/^\s*[-rw]+\s+\d\s+(.+)/$1/; $f =~ s/ /\",\"/g; $f =~ s/^(.)/\"$1/; $f =~ s/(.)$/$1\"/; print "$f\n"; } } map { create_listing($_) } ("inc","php");
Labels: 0x0000, bash, code, gnu, linux, perl, script, shebang, source
Tuesday, March 24, 2009
Ongoing X Issues w/ hp zd7000
The NVIDIA X server module is still not loading - or is not loading correctly - on the hp pavilion zd7000.
Additional Information
- NVIDIA GPU Selected for Revolutionary HP Notebook — a press release from nvidia.com that talks about the NVIDIA chipset used in the zd7000
- Linux on zd7000 — a detailed summary of what worked and didn't / tips & tricks for getting Linux working on the zd7000 [the page sez "Last update: 08/24/2004" – didn't realize this machine was that old 8-|
- opensuse – NVIDIA The_hard_way
- http://xorg.freedesktop.org/releases/ — current release(s) of the xorg X-server.
- Re: openSuse 11.1 Beta NVIDIA driver available — A post about the NVIDIA driver / x-server download site
- nv Vs. nvidia in xorg.conf at LinuxQuestions.org
Labels: hp, linux, nvidia, pavilion, x, zd7000
Friday, March 20, 2009
xorg.conf file for hp pavilion zd7000
#
# X-server configuration file.
#
# Place this file at /etc/X11/xorg.conf and restart the X server
# in order to start using the provided configuration.
#
# This is the xorg.conf file that fixes the X-server config
# problems on the hp pavilion zd7000 laptop running OpenSuSE 11.0
#
# The source of this file is/was:
# http://www.ccs.neu.edu/home/jpatota/linux/knoppix/xorg.conf
#
#
Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
# PS/2 Mouse not detected
# Serial Mouse not detected
InputDevice "USB Mouse" "CorePointer"
EndSection
Section "ServerFlags"
Option "AllowMouseOpenFail" "true"
EndSection
Section "Files"
RgbPath "/usr/share/X11/rgb"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/X11/misc:unscaled"
FontPath "/usr/share/fonts/X11/75dpi:unscaled"
FontPath "/usr/share/fonts/X11/100dpi:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/Speedo"
FontPath "/usr/share/fonts/X11/PEX"
# Additional fonts: Locale, Gimp, TTF...
FontPath "/usr/share/fonts/X11/cyrillic"
# FontPath "/usr/share/fonts/X11/latin2/75dpi"
# FontPath "/usr/share/fonts/X11/latin2/100dpi"
# True type and type1 fonts are also handled via xftlib, see /etc/X11/XftConfig!
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
FontPath "/usr/share/fonts/truetype"
FontPath "/usr/share/fonts/latex-ttf-fonts"
EndSection
Section "Module"
# Comments: see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=346408
Load "dbe" # Double Buffering Extension, very important.
Load "dri" # This shouldn't be available choice if user has selected driver vga, vesa or nv.
Load "glx" # GLX Extension.
Load "freetype" # Freetype fonts.
Load "type1" # Type 1 fonts
Load "record" # Developer extension, usually not needed
# Load "extmod" # This is okay, but if you look into "man xorg.conf" you'll find option NOT to include DGA extension with extmod, and for a good reason.. DGA causes instability as it access videoram without consulting X about it.
SubSection "extmod"
Option "omit xfree86-dga"
EndSubSection
# Load "speedo" # Speedo fonts, this module doesn't exist in Xorg 7.0.17
# The following are deprecated/unstable/unneeded in Xorg 7.0
# Load "ddc" # ddc probing of monitor, this should be never present, as it gets automatically loaded.
# Load "GLcore" # This should be never present, as it gets automatically loaded.
# Load "bitmap" # Should be never present, as it gets automatically loaded. This is a font module, and loading it in xorg.conf makes X try to load it twice.
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection
Section "InputDevice"
Identifier "Serial Mouse"
Driver "mouse"
Option "Protocol" "Microsoft"
Option "Device" "/dev/ttyS0"
Option "Emulate3Buttons" "true"
Option "Emulate3Timeout" "70"
Option "SendCoreEvents" "true"
EndSection
Section "InputDevice"
Identifier "PS/2 Mouse"
Driver "mouse"
Option "Protocol" "auto"
Option "ZAxisMapping" "4 5"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "true"
Option "Emulate3Timeout" "70"
Option "SendCoreEvents" "true"
EndSection
Section "InputDevice"
Identifier "USB Mouse"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "SendCoreEvents" "true"
Option "Protocol" "IMPS/2"
Option "ZAxisMapping" "4 5"
Option "Buttons" "5"
EndSection
# Auto-generated by KNOPPIX mkxf86config
Section "Monitor"
Identifier "Monitor0"
Option "DPMS" "true"
HorizSync 30 - 64
VertRefresh 50 - 100
Modeline "1440x900" 97.54 1440 1472 1840 1872 900 919 927 946
EndSection
Section "Device"
### Available Driver options are:-
# sw_cursor is needed for some ati and radeon cards
#Option "sw_cursor"
#Option "hw_cursor"
#Option "NoAccel"
#Option "ShowCache"
#Option "ShadowFB"
#Option "UseFBDev"
#Option "Rotate"
Identifier "Card0"
# The following line is auto-generated by KNOPPIX mkxf86config
Driver "nv"
VendorName "All"
BoardName "All"
# BusID "PCI:1:0:0"
Option "MetaModes" "1440x900"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultColorDepth 16
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1440x900"
EndSubSection
EndSection
Section "DRI"
Mode 0666
EndSection
Labels: config, file, hp, linux, pavilion, x, xorg.conf, zd7000
NVIDIA X-server problems with hp pavilion zd7000
http://www.ccs.neu.edu/home/jpatota/linux/knoppix/index.html
A week or so ago I managed to munge the X-server configuration on the hp pavilion zd7000 linux laptop I've been using for about a month now. The X-server quit working after some set of package installs and/or system updates wherein I was trying to get the correct NVIDIA™ display drivers installed such that I could use the various "transparency" and "translucency" settings on the shiny new KDE 4.x desktop.
The fix given on the page Configuring and Running Knoppix on the HP Pavilion zd7000 works, even though the OS distribution listed as the application environment for the fix is given as KNOPPIX. and the distro I have on the hp is OpenSuSE 11.0.
For the record, the fix is/was:
Download the xorg.conf from http://www.ccs.neu.edu/home/jpatota/linux/knoppix/xorg.conf and install it as /etc/X11/xorg.conf –
I have posted a copy of the xorg.conf file recommended above at http://blogs.earthside.org/earth_tech/2009/03/xorgconf-file-for-hp-pavilion-zd7000.html.
I have downloaded the file in question, and am uploading attached to this post as an "enclosure" …Or, "just–in–case" the enclosure doesn't enclose, I will paste a copy of the file into a subsequent posting on this blog.
Labels: config, hp, knoppix, laptop, linux, nvdia, opensuse, x, zd7000
Monday, March 9, 2009
Set an HTTP Basic Authentication Password
http://httpd.apache.org/docs/2.0/howto/auth.html
To set an HTTP Basic Authentication password on a sub-directory within the Apache document root directory tree:
- select the password file to use (this file can be created using the htpasswd command).
- Create the .htaccess in the directory that is to be protected.
- Within the .htaccess file, place Apache configuration directives similar to below.
- Create the username/password combination for login to the directory.
Ref:
- Authentication, Authorization, and Access Control – Apache HTTPD Server
- Linux Tutorial: Apache Web Login Authentication
Labels: apache, authentication, linux
Thursday, March 5, 2009
strftime() output format settings [from the man page]
The output format strings used by strftime() have become a sort of defacto standard for date/time formating in Unix (Linux), and Unixish applications. Here is a list of the output modifiers defined by strftime() for use in the output format strings:
%% a literal %
%a locale's abbreviated weekday name (e.g., Sun)
%A locale's full weekday name (e.g., Sunday)
%b locale's abbreviated month name (e.g., Jan)
%B locale's full month name (e.g., January)
%c locale's date and time (e.g., Thu Mar 3 23:05:25 2005)
%C century; like %Y, except omit last two digits (e.g., 21)
%d day of month (e.g, 01)
%D date; same as %m/%d/%y
%e day of month, space padded; same as %_d
%F full date; same as %Y-%m-%d
%g last two digits of year of ISO week number (see %G)
%G year of ISO week number (see %V); normally useful only with %V
%h same as %b
%H hour (00..23)
%I hour (01..12)
%j day of year (001..366)
%k hour ( 0..23)
%l hour ( 1..12)
%m month (01..12)
%M minute (00..59)
%n a newline
%N nanoseconds (000000000..999999999)
%p locale's equivalent of either AM or PM; blank if not known
%P like %p, but lower case
%r locale's 12-hour clock time (e.g., 11:11:04 PM)
%R 24-hour hour and minute; same as %H:%M
%s seconds since 1970-01-01 00:00:00 UTC
%S second (00..60)
%t a tab
%T time; same as %H:%M:%S
%u day of week (1..7); 1 is Monday
%U week number of year, with Sunday as first day of week (00..53)
%V ISO week number, with Monday as first day of week (01..53)
%w day of week (0..6); 0 is Sunday
%W week number of year, with Monday as first day of week (00..53)
%x locale's date representation (e.g., 12/31/99)
%X locale's time representation (e.g., 23:13:48)
%y last two digits of year (00..99)
%Y year
%z +hhmm numeric timezone (e.g., -0400)
%:z +hh:mm numeric timezone (e.g., -04:00)
%::z +hh:mm:ss numeric time zone (e.g., -04:00:00)
%:::z numeric time zone with : to necessary precision (e.g., -04, +05:30)
%Z alphabetic time zone abbreviation (e.g., EDT)
By default, date pads numeric fields with zeroes. The following optional
flags may follow `%':
- (hyphen) do not pad the field
_ (underscore) pad with spaces
0 (zero) pad with zeros
^ use upper case if possible
# use opposite case if possible
After any flags comes an optional field width, as a decimal number; then
an optional modifier, which is either E to use the locale's alternate rep-
resentations if available, or O to use the locale's alternate numeric sym-
bols if available.
Examples:
To get the output YYYYMMDD (where YYYY is the four-digit year, and MM and DD are the two-digit, zero-left-padded month and day values, respectively) from the 'date' command, use the following command:
date +"%Y%m%d"
The output should look like:
20090305
To get the international standard date format, use the command
date +"%F"
The output should look like
2009-03-05
Values output by the 'date' command can be stored in variables inside a script (e.g. Bash, Perl, etc) thus:
foo=`date +"%F"`
For Bash, or
my $foo = `date +"%Y%m%d"`;
in Perl.
Labels: date, format, linux, strftime, time
Thursday, February 12, 2009
MP3 Decoder Not Installed by Default
The following error is common when K3B (CD/DVD Burning Software) is run for the first time on a stock-install system:
Mp3 Audio Decoder plugin not found.
K3b could not load or find the Mp3 decoder plugin. This means that you will not be able to create Audio CDs from Mp3 files. Many Linux distributions do not include Mp3 support for legal reasons.
Solution: To enable Mp3 support, please install the MAD Mp3 decoding library as well as the K3b MAD Mp3 decoder plugin (the latter may already be installed but not functional due to the missing libmad). Some distributions allow installation of Mp3 support via an online update tool (i.e. SuSE's YOU).
Labels: k3b, lame, linux, mad, mp3
How to Mount a Remote SSH Filesystem using sshfs
http://ubuntu.wordpress.com/2005/10/28/how-to-mount-a-remote-ssh-filesystem-using-sshfs/
Ran across this bit in the Ubuntu Wordpress Blog: How to Mount a Remote SSH Filesystem using sshfs
The sshfs can be used to mount and unmount remote file systems in user space over an SSH tunnel.
The sshfs program was not installed by default.
This program (sshfs) is relate to the FUSE user-space file system architecture.
- create /media/<MOUNTPOINTNAME>
- chown the newly created directory to belong to the current user
- issue 'sshfs user@host:/path /media/<MOUNTPOINTNAME>' to mount the remote filesystem
Labels: linux, mount, remote file system, SSH, tip
Adding to the Perl Include Path
[this is from the Perl Module Installer documentation supplied with cPanel and CenOS]
Suppose you need to add a path - say /home/earthsid/perl - to the Perl include path. You will need to modify the Perl code to set the INC path in the BEGIN block of the program.
You can do this by adding the following code to your script:
BEGIN {
my $homedir = ( getpwuid($>) )[7];
my @user_include;
foreach my $path (@INC) {
if ( -d $homedir . '/perl' . $path ) {
push @user_include, $homedir . '/perl' . $path;
}
}
unshift @INC, @user_include;
}
Note that - no matter where the BEGIN block resides in a program, it is always excuted first, before ay other part of hte script lib.
Installing OpenSuSE 11.1 over the Internet
You will need to know these to get the NET install started...
Net Install Parameters: Protocol: HTTP Host: www.gtlib.gatech.edu Path: pub/opensuse/distribution/11.1/repo/oss/ Net Install CD: http://www.gtlib.gatech.edu/pub/opensuse/distribution/11.1/iso/openSUSE-11.1-NET-i586.iso ISO Directory: http://www.gtlib.gatech.edu/pub/opensuse/distribution/11.1/iso/
Furthermore, you may need to install these lines into your /etc/hosts file:
## added to solve un-explained "Couldn't resolve host..." error ## while installing OpenSuSE 11.1 (NET) - these lines provide the ## hostname->to->ip address mappings for the OpenSuSE mirrors; ## NOTE: These addresses should be checked and updated before use! ## These is just what the 'host' command returned today... ## -pdwilso(at)gmail.com 128.8.235.18 mirror.umoss.org 134.174.150.123 mirrors.med.harvard.edu 149.20.20.135 .kernel.org 64.50.236.216 suse.mirrors.tds.net 204.152.186.174 opensuse.ca.unixheads.org 64.50.238.52 ftp.osuosl.org 64.50.236.52 ftp.osuosl.org 146.137.96.15 mirror.anl.gov 146.137.96.7 mirror.anl.gov 198.60.22.13 mirrors.xmission.com 146.6.54.21 ftp.utexas.edu 72.3.128.167 mirror.rackspace.com 155.98.64.86 opensuse.cs.utah.edu 129.21.2.111 mirrors.rit.edu 64.90.181.77 mirror.nyi.net 80.237.136.138 ftp.hosteurope.de 156.56.247.193 ftp.ussg.iu.edu
Hosts file: uploads/opensuse-mirror-hosts-20090212.txt
An odd aspect of the DNS name resolution problem: For some reason, Konqueror could not resolve host names, but 'host' could.
Finally, here is a script that I used to create the hosts listing:
#!/bin/sh
host $1 | perl -e 'while(<>){\
chomp;m/([a-z.]+) has address ([0-9.]+)/ && print"$2\t$1\n";\
}'
This script is used like:
getip.sh mirror1.kernel.org
and returns
<IP-Address>\t<Hostname>
If you've got root, the output of getip.sh can be used thus:
getip.sh mirror1.kernel.org >> /etc/hosts
Of course there are other ways to do this. Of course you should check the output of getip.sh before appending it to /etc/hosts.
Caveat emptor. YMMV. Don't take any wooden nickels.
Labels: 11.1, install, linux, network, opensuse, tip, workaround
Saturday, February 7, 2009
Emacs TRAMP
http://www.gnu.org/software/tramp/
Neat. Remember all those years ago when you were opening and editing files on remote servers using Emacs and its Ange-FTP module? Remember how it all went bad back during the war when packet sniffers became common, and you couldn't trust your password to the wires, anymore? Remember the joy you felt when you realized that ssh, scp, and sftp had it within their power to fix all that for good and all as soon as all those benighted ISPs opened port 22 to their secure shell servers instead of those stupid other ports and their clear-text protocols? Remember the angst you felt waiting for some Lisp guru to take pity on your pathetic ineptitude with with her parenthetical language and code you up an SSH-based file I/O substrate for your favorite horned text processing system? Remember the bleak years of despair and hopelessness you spent trashing random windows boxes, wracked with frustration as your Emacs-nox was denied you by petty bureaucrats and ill-conceived Win32 solutions?
Rejoice now, all ye stricken!
http://www.gnu.org/software/tramp/
One (1) prop to the KDE Help System and its authors, that's where we discovered all this... would add another if there was a way to provide a bookmark into the desktop help system, here - as is, I don't even have the hierarchical path info - just the document title [TRAMP version 2.0.57 User Manual], which doesn't seem to be useful in finding the file within the help system, as the "search" function has some grievance that remains un-addressed....
Friday, February 6, 2009
X Session Problems (KDM, GDM, WDM, XDM, FVWM and more)
It seems clear to me at this point that the desktop is going to have to be KDE, and (in this case, now) KDE4, in particular.
The bottom line is simply this: the KDE widget set has the widgets I want, and it works more consistently than e.g. GNOME.
This blog has been down for days because the gnome-panel has decided to - each time it is launched - go into an infinite loop which hogs something around 100% of the processor cycles, and will not stop until it is killed with a 'pkill -9 gnome-panel'.
Now, I know this problem with GNOME has something to do with the stored configuration, but I have been unable to determine just exactly which aspect of the GNOME configuration is causing the problem.
Furthermore, once I realized that GNOME was not healing itself, and was in fact doing everything in its power to prevent me from using the computer at all, I tried to switch back to KDE. That effort took down the whole X server config, starting with the session login manager - neither kdm nor gdm would work, and gdm wouldn't even start.
After a brief flirtation with wdm, I took the fallback to xdm - which sort of worked, but wouldn't start an X session until I re-installed both GDM and KDM.
Having been through all that, I was so relieved to see the KDE desktop again I haven't changed it since.
Now, in between all this, I have also found that FVWM as installed by OpenSuSE does not come configured - the "out of the box" configuration is simply a black screen (arguably an improvement over the miore-effect tiling that is the X default) with the default, built-in root menu available using the right mouse button on the black desktop. After screwing around with the FVWM config - and since I did not have my archived FVWM configuration immediately available, I tried to switch to a different - I.E. non-FVWM session - which is when I discovered that the session configurations were hosed. Specifically, when I logged in to the FVWM session, something in the session manager config got changed, and there was no non-trivial way to change it back.
The really unfortunate part of all this is that I do not have a "fix" to present here. This is all just a problem description, and fails to even adequately define the problem in reproducible terms.
I will, in the course of getting this desktop environment to a usable state, try to generate some more coherent bug reports and/or workarounds to the problems that keep coming up.
Meanwhile, KDE4 is going to be "it" - I expect it
a) to be simpler to configure for user-friendly day-to-day use
b) to be more robust once configured
c) to provide a widget set tailored for my needs
FVWM is more configurable, and arguably more powerful for detailed, perhaps non-standard, configuration items, but tends to be less intuitive in its default modes, and more tedious to bring into compliance with the Windows-like look and feel which GNOME and KDE have shown to be so popular.
In short, I will provide KDE as a baseline desktop, with customizations purpose-built using FVWM (these will typically be for dedicated accounts).
Finally: I think I like KDE3 better than KDE4. All my transparent widgets from KDE3 have gone opaque in KDE4, and the glassy, glossy radioactive eye-candy from KDE3 is toned way down - at least in the default versions. I have some screenshots of each which I will link here (once I find the URLs) that should highlight some of the differences.
Labels: display manager, GNOME, kde, KDE4, linux, x
Thursday, November 6, 2008
Copy Knoppix to HD
http://www.knoppix.net/wiki/Basic_Poor_Mans
# How to set up a "Poor Man's Install" so that the machine boots from a CD # image that's been copied to the hard disk. GRUB is used as the boot loader. # It is assumed that you are booted to Knoppix CD 5.1.1, and ALL HARD DISK # CONTENTS WILL BE ERASED!!! # 0. Switch to root with su - # 1. Partition the hard disk as follows (minimum 20GB hard disk recommended) # 10GB /dev/hda1, type 83 # 2GB /dev/hda2, type 82 # (the rest of the disk) /dev/hda3, type 83 # # determine the disk device name, which is usually /dev/hda for IDE and # /dev/sda for SATA DEVICE=`fdisk -l 2>/dev/null | head -2 | tail -1 | awk '{print $2}' | sed 's/\:$//'` # print warning and confirmation clear echo "This CD will install Knoppix 5.1 on your hard disk." echo "The system will then boot from the hard disk as if you had booted from" echo "the Knoppix CD, also known as a Poor Man's Install." echo echo "WARNING:" echo "ALL EXISTING DATA ON THE HARD DISK $DEVICE WILL BE ERASED BY THIS PROCESS!!!" echo echo -n "Do you wish to continue? (y/n): " read ANSWER if [ "$ANSWER" = "y" -o "$ANSWER" = "Y" ] then : else echo "Installation aborted!" sleep 3 exit fi # clear the old partition table dd if=/dev/zero of=$DEVICE bs=512 count=1 # determine the cylinder size CYL_SIZE=`fdisk -l $DEVICE 2>/dev/null | grep "Units = cylinders" | awk '{print $9}'` # determine the number of cylinders in 10GB SIZE1=`echo "1073741824 * 10 / $CYL_SIZE" | bc` # determine the number of cylinders in 2GB SIZE2=`echo "1073741824 * 2 / $CYL_SIZE" | bc` # partition the disk sfdisk -f $DEVICE <<EOF ,$SIZE1,L ,$SIZE2,S ,,L EOF # 2. Create an ext3 filesystem on the first and third partitions mke2fs -j -m0 ${DEVICE}1 mke2fs -j -m0 ${DEVICE}3 # 3. Create a swap area on the second partition mkswap ${DEVICE}2 # 4. Mount first partition on /media/p1 mkdir /media/p1 mount ${DEVICE}1 /media/p1 # 5. Copy the contents of the Knoppix CD to /media/p1 echo echo "Copying CD contents to hard drive. This will take a few minutes." /bin/cp -af /cdrom/KNOPPIX /media/p1 # remove /media/p1/KNOPPIX/knoppix.sh /bin/rm -f /media/p1/KNOPPIX/knoppix.sh # 6. Create a boot directory on /media/p1 and copy the kernel and initrd # there mkdir /media/p1/boot /bin/cp -af /boot/vmlinuz-2.6.19 /media/p1/boot /bin/cp -af /cdrom/boot/isolinux/minirt.gz /media/p1/boot # 7. Create a directory for GRUB mkdir /media/p1/boot/grub # 8. Populate the GRUB config file. If you require different default boot # options, include them in the kernel line. cat <<EOF > /media/p1/boot/grub/menu.lst default=0 timeout=10 title Knoppix 5.1 (Poor Man's HD install) root (hd0,0) kernel /boot/vmlinuz-2.6.19 ramdisk_size=100000 init=/etc/init lang=us apm=power-off vga=normal initrd=minirt.gz nomce loglevel=0 quiet BOOT_IMAGE=knoppix BOOT_IMAGE=linux lang=us fromhd=${DEVICE}1 noeject noprompt initrd /boot/minirt.gz EOF cd /media/p1/boot/grub ln -s menu.lst grub.conf # 9. Install GRUB cd /media/p1 grub-install --root-directory=/media/p1 --no-floppy $DEVICE # 10. Reboot (and remove CD) reboot
Now on Cricket Broadband
Posting this over a local wireless network behind a cricket broadband connection from a Windows Vista machine conntected to the USB dongle, and running Windows' Internet Connection Sharing or wtf it's called ... will connect eth and linksys wifi router to ICS-enabled and connect linux boxen wifi-ly.
Hello KNOPPIX. Insufficient bandwidth to practically d/l OpenSUSE 11 DVD ISO? testing one two three...
linux hack wanted, cheep/chirp
over
Labels: cdma, ethernet, ICS, linux, vista, wifi
Wednesday, January 23, 2008
Ubuntu Forums: Acer 5520 -specific Atheros AR5007EG HowTo
http://ubuntuforums.org/showpost.php?p=4182106&postcount=284
Ubuntu Forums is hosting a some discussions about getting the Atheros WiFi card working on the Acer 5520 laptop.
Also, Bug #162251 in network-manager-applet (Ubuntu) details a bug which the post's author says may be related to the problems with
Labels: 64-bit, acer 5520-5334, atheros AR5007EG, linux, wifi
Thursday, July 19, 2007
Additional info about Konqueror, Blogger Dashboard, and Spell Checking
Apparenlty the prooblem with Konqueror dying trying to load the Blogger.com Dashboard was temporary. This post is made using Konqueror 3.5.2 (KDE 3.5.2). It appears that the problem may have had somewhat to do with the Spell Checker problems I was trying to post about earlier (at the time the Konqueor crash occurred.
The problem then was that Konqueror as configured by default under Knoppix 5.0.1 was still using the German language dictionary for spell-checking, even though I had changed the KDE language preference to US English (US-EN) using the KDE Kicker panel [I.E. "toolbar"] widget.
I have since restarted KDE (due to some problems that seemed to have been caused by my moving the system /tmp directory to an internal drive partition while KDE was still running) and Konqueror starts up and runs and has not [yet] crashed on the Blogger Dashboard interface.
The earlier crash which killed Konqueror for the duration of that KDE session occurred after the problems with the spell checker manifested, and after I clicked the Save Now button to save the post. The Save Now button did not "depress" at that time, and no draft of the message was saved. Immediately after the save operation failed is when I clicked the Dashboard link, which is what caused Konqueror to crash.
Note that at this time, the spell checker does not seem to be working at all in Konqueror (the Auto Spell Check option is checked, and the Check Spelling context menu command does nothing), and that
- There is no "typeahead" pattern matching in the tags field of the blogger.com Posting interface as there is with Firefox v2.x
- The layout of the blogger.com Posting interface in Konqueror is munged - there is a large whitespace block below the text entry area, between the bottom edge of the HTML textarea element and the the bottom edge of the boarder which encloses the HTML element. (above the Post Options link, the Labels (sic) [tags] entry field, Publish Post and Save Now buttons, etc.
Labels: blogger, crash, kde, konqueror, linux, v3.5.2
erratta: KNOPPIX audio is working
http://blogs.earthside.org/earth_tech/2007/07/audio-problems-on-hp-pavilian-a220n.html
This is to correct a statement I made previously in a post on this log [earth tech] about KNOPPIX and the audio capability on the HP Pavilion a220n.
The audio input does in fact work under the KNOPPIX 5.0.1 LiveCD release. I missed this because, while the audio output worked fine once the audio sub-system was enabled via the KDE Control Center | Sounds & Multimedia | Sound System control panel, the mic input levels were defaulting to zero, so no singal was being captured.
Links:
Labels: a220n, audio, errata, hp, kde, linux, pavilion, sound
Monday, July 16, 2007
Solution to Debian's Problem with 'mount /dev/sda1'
http://www.linuxforums.org/forum/debian-linux-help/49997-dev-sda1-missing-2.html#post487249
There is a problem - as mentioned previously - with the default Debian-blows-goats install. For whatever reason, the system refuses to mount a USB mass-storage device when it is connected - that is, the Debian-POS system neither automounts the new storage device, nor will it allow either root or any loggeg-in use to mount it, despite the appropriate entries in /etc/fstab and the expected messges in /var/log/messges.
The forum thread /dev/sda1 missing [now closed] at LinuxForums describes the problem, some attempts at solutions, and some "workarounds" (see our post Found a workaround, maybe...) in detail, but the information we're posting here is not there [or if it is, it's in another thread and we didn't find it], and since the thread is "closed" we are posting it here...
Basically, the solution is very straight-forward: Install the udev package.
While that sounds straight-forward, Debian-blows-dogs-for-quarters has [again] gone out of their way to make the administrators life as difficult as possible by making sure that there is no apparent way to navigate to 'stable' distro from the 'untable' distro, and furthermore there is no clea way to select which Debian-POS distro you want to get .deb packages from. There appears to be no way to do a substring match when seraching packages. And there seems no way to either know which distro (eg.. 'stable', 'unstable', etc) the packages installed on a given machine came from, either.
And now IceWeasel-POS is crashing - randomly deleting characters from the textarea on blogger.com, and taking a good .7sec per charcteer typed to echo the characters typed - andddddddddddddddddddddddddddddddddddddddddddddd this with dysfunctional spell checking! Also, as you can see, the IceWeasel-POS is repeating characters and words randomly when blogger does its autosave operation.
So this is like : I'm typing a sentence, then stopping and waiting fffffffffffffffffffffffor the words to appeare. - and when they do- the repeats.
We have [sort of] found a solution. Note that in the log below, the 'apt-get install udev' command output is from the second run of same command. Ran it, then ran it again. Not sure why, but it worked.
root@juggalo:/dev# apt-get install udev Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: bluez-bcm203x hotplug The following NEW packages will be installed: udev 0 upgraded, 1 newly installed, 2 to remove and 2 not upgraded. Need to get 263kB of archives. After unpacking 471kB of additional disk space will be used. Do you want to continue [Y/n]? Y Get:1 http://ftp.de.debian.org stable/main udev 0.105-4 [263kB] Fetched 263kB in 1s (183kB/s) Preconfiguring packages ... (Reading database ... 139905 files and directories currently installed.) Removing bluez-bcm203x ... dpkg: hotplug: dependency problems, but removing anyway as you request: atmel-firmware depends on udev (>= 0.070-3) | hotplug (>= 0.0.20040329-12); however: Package udev is not installed. Package hotplug is to be removed. Removing hotplug ... Selecting previously deselected package udev. (Reading database ... 139875 files and directories currently installed.) Unpacking udev (from .../archives/udev_0.105-4_i386.deb) ... ************************************************************** * Please purge the hotplug package! * (/etc/init.d/hotplug has been found on this system) ************************************************************** Setting up udev (0.105-4) ... Installing new version of config file /etc/init.d/udev ... Installing new version of config file /etc/udev/links.conf ... Installing new version of config file /etc/udev/persistent-input.rules ... Installing new version of config file /etc/udev/persistent.rules ... Installing new version of config file /etc/udev/cd-aliases-generator.rules ... Installing new version of config file /etc/udev/udev.rules ... Installing new version of config file /etc/udev/devfs.rules ... Installing new version of config file /etc/udev/hotplug.rules ... Installing new version of config file /etc/udev/permissions.rules ... Installing new version of config file /etc/udev/persistent-net-generator.rules ... Installing new version of config file /etc/scsi_id.config ...
Note that it is not clear how or why bluez-bcm203x hotplug got installed - it was not requested or wanted, as this machine has no Bluetooth devices, and probably never will.
Other notes of note:
- The udev package was already installed, but wasn't working right.
- The installed version of udev did not include the documentation that was [according to the Debian udev package description] supposed to exist in /usr/share/udev/
- As with so many other Debian-POS commands, there was no man page installed, despite the fact that 'apropos udev' showed a number of [non-existent] man pages for the command. This seems to be a pervasive problem with this particular Debian-lies-like-a-whore distro - many [we're inclined to say "most" actually] of the administrative manual pages are notably missing, even though 'apropos' claims they are there - perhaps there is some issue with the configuration of the 'makewhatis' cron job on Debian-blows? Why would these man pages be left out? And if they are going to be left out, why lie about it through apropos?
So yes, we seem to have fixed this problem, but Debian still sux0r.
Labels: auto-mount, debian, linux, sux, sux0r, udev, usb
Sunday, July 15, 2007
Konqueror Crash
Konqueror is :
- Hanging while waiting for blogger.com to "Publish" a blog post.
- Crashing; Konqueror will crash if - while the "publish" operation is in its infinite refresh loop, loading and reloading the "Please wait while your page is published" message page - the user
- opens another Konqueror window
- goes to view the blog in the new window [note that the post which initiated the publish operation has been posted - the post has uploaded and the blog has been updated, despite the braindead infinite loop the first window of Kongqueror is stuck in]
- goes back to the first window [where the ininfinite refresh loop is going on]
- clicks on the Blogger Dashboard link there, in the first window, while the infinite refresh loop is going on
Other info from the Crash Handler:
- Konqueror [crashed and] threw SIGILL.
- "The application was asked to save its documents"
Default browser indentification string for this version of Konqueror [note that I have broken the line below at the backslash]:
Mozilla/5.0 (compatible; Konqueror/3.5; Linux 2.6.17; X11; i686; en_US)\ KHTML/3.5.2 (like Gecko) (Debian package 4:3.5.2-2+b1)
Here is the backtrace data from the crash handler:
(no debugging symbols found) Using host libthread_db library "/lib/tls/libthread_db.so.1". (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) [Thread debugging using libthread_db enabled] [New Thread -1231935808 (LWP 4267)] (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) [KCrash handler] #5 0x08f95edc in ?? () #6 0xb62d57ae in DOM::checkChild () from /usr/lib/libkhtml.so.4 #7 0xb629e96c in DOM::XMLAttributeReader::~XMLAttributeReader () from /usr/lib/libkhtml.so.4 #8 0xb6268f9e in KHTMLPart::saveState () from /usr/lib/libkhtml.so.4 #9 0xb62289fe in KHTMLPartBrowserExtension::saveState () from /usr/lib/libkhtml.so.4 #10 0xb6875b5f in KonqView::updateHistoryEntry () from /usr/lib/libkdeinit_konqueror.so #11 0xb6893a11 in KonqView::slotCompleted () from /usr/lib/libkdeinit_konqueror.so #12 0xb6893c23 in KonqView::slotCompleted () from /usr/lib/libkdeinit_konqueror.so #13 0xb689987d in KonqView::qt_invoke () from /usr/lib/libkdeinit_konqueror.so #14 0xb72b8678 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3 #15 0xb72b8fdc in QObject::activate_signal () from /usr/lib/libqt-mt.so.3 #16 0xb7f85e0a in KParts::ReadOnlyPart::completed () from /usr/lib/libkparts.so.2 #17 0xb62581c0 in KHTMLView::timerEvent () from /usr/lib/libkhtml.so.4 #18 0xb72b5786 in QObject::event () from /usr/lib/libqt-mt.so.3 #19 0xb72f2b9a in QWidget::event () from /usr/lib/libqt-mt.so.3 #20 0xb724e87a in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3 #21 0xb724f5f5 in QApplication::notify () from /usr/lib/libqt-mt.so.3 #22 0xb792502e in KApplication::notify () from /usr/lib/libkdecore.so.4 #23 0xb71e0001 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3 #24 0xb7240305 in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3 #25 0xb71f3d2a in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3 #26 0xb7267255 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3 #27 0xb726717a in QEventLoop::exec () from /usr/lib/libqt-mt.so.3 #28 0xb724d38d in QApplication::exec () from /usr/lib/libqt-mt.so.3 #29 0xb68be17c in kdemain () from /usr/lib/libkdeinit_konqueror.so #30 0xb7fb1524 in kdeinitmain () from /usr/lib/kde3/konqueror.so #31 0x0804e1d6 in ?? () #32 0x00000004 in ?? () #33 0x080cff68 in ?? () #34 0x00000001 in ?? () #35 0x00000000 in ?? ()
Labels: blogger, crash, kde, knoppix, konqueror, linux, v3.5.2
More about KNOPPIX and the HP a220n
The X log file on the HP Pavilion a220n running KNOPPIX:
uploads/Xorg.0.log.TXTThis file is found at /var/log/Xorg.0.log on the system while the system is running.
Labels: config, hp, knoppix, linux, pavilion, x
Getting 'sudo' Working
There is a simple bit of information that has finally penetrated the fog of insanity that surrounds computers and related equipment that information is this:
When using the sudo command under Linux [don't know about other systems, yet] it is the case that users who are listed in the /etc/sudoers file actually use their own account password to execute the sudo command, not [as some of use might have once thought] the root account password as is used when accessing the root account with the su command.
This information has now been shown to be true under systems that include, but are not limited to:
- KNOPPIX (with passwords and user accounts enabled
- Debian
- CentOS
Labels: linux, su, sudo, sudoers
Full dmesg Output for a220n under KNOPPIX
Capture of the output of the command dmesg performed under KNOPPIX on the HP Pavilion a220n:
Here is the output of uname -a for this same system:
Linux Knoppix 2.6.17 #4 SMP PREEMPT Wed May 10 13:53:45 CEST 2006 i686 GNU/Linux
Labels: a220n, dmesg, hp, knoppix, linux, pavilion
Audio Problems on HP Pavilian a220n under Debian Linux
This is an excerpt from the output of the lsmod command run under KNOPPIX on an HP Pavilion a220n desktop computer:
snd_intel8x0 31260 3 snd_ac97_codec 88352 1 snd_intel8x0 8250_pnp 12288 0 snd_ac97_bus 6016 1 snd_ac97_codec snd_pcm_oss 38176 0 snd_mixer_oss 17536 1 snd_pcm_oss snd_pcm 73220 4 snd_intel8x0,snd_ac97_codec,snd_pcm_oss snd_timer 22148 2 snd_pcm shpchp 37032 0 i2c_nforce2 9856 0 snd 44768 10 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
For some reason neither KNOPPIX 5.0.1 nor the Debian install to the hard disk [provided by the KNOPPIX LiveCD via the knoppix-installer command] seem to be able to get the audio input functionality of the sound card working.
Audio output works okay when the Sound System is enabled via the KNOPPIX control panel, but does not appear to work under the Debian instantiation of KDE.
No version numbers captured yet from the Debian kernel, or the versions of KDE involved (which are different between the Debian install (with updates) and the KNOPPIX distro.
Labels: a220n, audio, debian, hp, knoppix, linux, pavilion, sound
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