xxdiff and svn

sudo apt-get install xxdiff-scripts
Then use xx-svn-diff instead of svn diff.

abcde configuration

~/.abcde.conf:
OUTPUTTYPE="mp3"
LAMEOPTS="--preset standard"

jerky green video output with mplayer and xv

After an upgrade to Ubuntu Jaunty, my mplayer video output (using -vo xv) was completely green and jerky. It turned out that during the upgrade apparently the proprietary nvidia driver was disabled. You simply need to reenable it at System -> Administration -> Hardware Drivers and reboot to fix the problem.

ssh connect error

error:
buffer_get_ret: trying to get more bytes 4 than in buffer 0
buffer_get_int: buffer error

Seems to have something to do with the public key.
It helps to remove ~/.ssh/id_dsa* (or the whole ~/.ssh directory if you want to be sure).

This appeared to me only after the upgrade to Ubuntu Jaunty, I don't know if it's related or what the correct fix is.

There seems to be a matching bug report here.

Update: Apparently it's fixed by now.

Stuttering sound after upgrade to Ubuntu 9.04 (Jaunty)

It turns out that some sound drivers don't work well with PulseAudio, especially regarding the "glitch-free mode". The fix (as described here) is to disable glitch-free:

/etc/pulse/default.pa:

load-module module-hal-detect tsched=0

Afterwards, restart PulseAudio (or simply reboot).

colorgcc from within SCons error: uninitialized value

Eror: Use of uninitialized value $ENV{"HOME"} in concatenation (.) or string at /usr/local/bin/g++ line 211.

Solution, see here:

Replace

$configFile = $ENV{"HOME"} . "/.colorgccrc";

with

my($found_HOME) = 0;
while (my ($key, $value) = each (%ENV))
{
if ($key =~ /HOME/)
{
$found_HOME = 1;
last;
}
}

if ($found_HOME == 0)
{
$ENV{"HOME"} = "/";
}
$configFile = $ENV{"HOME"} . "/.colorgccrc";


Stop blinking WiFi LED on Latitude D630 and Ubuntu

Forum post

Run the following using sudo:

For Ubuntu Intrepid Ibex:

#!/bin/sh
echo none > /sys/bus/pci/drivers/iwl3945/0000:0c:00.0/leds/iwl-phy0:assoc/trigger
echo none > /sys/bus/pci/drivers/iwl3945/0000:0c:00.0/leds/iwl-phy0:radio/trigger
echo none > /sys/bus/pci/drivers/iwl3945/0000:0c:00.0/leds/iwl-phy0:RX/trigger
echo none > /sys/bus/pci/drivers/iwl3945/0000:0c:00.0/leds/iwl-phy0:TX/trigger

echo none > /sys/class/leds/iwl-phy0:RX/trigger
echo none > /sys/class/leds/iwl-phy0:TX/trigger
echo none > /sys/class/leds/iwl-phy0:radio/trigger
echo none > /sys/class/leds/iwl-phy0:assoc/trigger

For Ubuntu Karma Koala you need to add extra colons (thanks to James Becwar!):

#!/bin/sh
echo none > /sys/bus/pci/drivers/iwl3945/0000:0c:00.0/leds/iwl-phy0::assoc/trigger
echo none > /sys/bus/pci/drivers/iwl3945/0000:0c:00.0/leds/iwl-phy0::radio/trigger
echo none > /sys/bus/pci/drivers/iwl3945/0000:0c:00.0/leds/iwl-phy0::RX/trigger
echo none > /sys/bus/pci/drivers/iwl3945/0000:0c:00.0/leds/iwl-phy0::TX/trigger

echo none > /sys/class/leds/iwl-phy0::RX/trigger
echo none > /sys/class/leds/iwl-phy0::TX/trigger
echo none > /sys/class/leds/iwl-phy0::radio/trigger
echo none > /sys/class/leds/iwl-phy0::assoc/trigger