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Godmode
This time I was debugging vino-server ... and as soon as you start to debug .. SEGFAULTs do not happen anymore. We all know this. So, this is my new Reallife-Alias:
alias iddqd='sudo gdb -p $(pidof dth)'
dth? October 28, 2011, at 11:17 UTC
Famous moviequotes ...
...as if spoken by a proper Englishman:
- Does Marsellus Wallace match the appearance of a female canine?
- My sincerest apologies, David, however I'm afraid I cannot effectuate the deed you have requested.
- There are deceased individuals within my periphery.
- In due time, I shall indubitably return.
dth? September 21, 2011, at 22:17 UTC
Phantom actions with closed (netbook-)lid
My Eeepc 1015PN exhibits some strange behaviour when the lid is closed. I open it again, only to find newly created folders, last night "the phantom" even went through my panel and deleted all network applications.
Long story short, the touchpad seems to be pretty sensitive and all symptoms can be traced back to a couple of hours of bogus input data.
Conclusion: We need to turn the touchpad off when the lid is closed
# Small fix for turning off the touchpad when the lid is closed.
# License: GPLv2
# Author: Jörg Eitemüller <destotelhorus@googlemail.com>
# XINPUT_DEVICE can be obtained by typing xinput list, then take the id of the touchpad device in question.
# Example:
# ⎜ ↳ ETPS/2 Elantech Touchpad id=14 [slave pointer (2)]
# The id would in this case be 14
XINPUT_DEVICE=14
# XINPUT_PROPERTY can be obtained by typing xinput list-props $XINPUT_DEVICE, then take the id of the property named "Off" or "Synaptics Off"
# Example:
# Synaptics Off (275): 0
# The id would in this case be 275
XINPUT_PROPERTY=275
LIDSTATE="unknown"
while true; do
grep -q 'closed$' /proc/acpi/button/lid/LID/state 1>/dev/null 2>&1
GREPRET=$?
if ( [ "$GREPRET" -eq "0" ] && [ "$LIDSTATE" != "CLOSED" ] ); then
#echo Turning the touchpad off
xinput set-prop $XINPUT_DEVICE $XINPUT_PROPERTY 1
LIDSTATE="CLOSED"
elif ( [ "$GREPRET" -ne "0" ] && [ $LIDSTATE != "OPEN" ] ); then
#echo Turning the touchpad on
xinput set-prop $XINPUT_DEVICE $XINPUT_PROPERTY 0
LIDSTATE="OPEN"
fi
sleep 1
done
Start this automatically with your X-session and expell the ghosts :-)
dth? August 28, 2011, at 11:50 UTC
VLC Memleaks
VLC - on occasion - loves to take every bit of RAM away for itself ... which kind of sucks. Valgrind doesn't turn up anything, since as soon as virtually every bit is drained VLC starts to free the memory again.
I kind of circumvented the whole issue with this:
mv /usr/bin/vlc /usr/bin/vlc.real-
/usr/bin/vlc#!/bin/bash
memleaksave.sh /usr/bin/vlc.real $@ -
/usr/bin/memleaksave.sh#!/bin/bash
ulimit -m 600000
ulimit -v 600000
$@
Now it will just silently hit the 600 MByte mark, and then VLC will free the memory again stopping the video playback.
dth? May 04, 2011, at 21:18 UTC
(C)ouchDB
Memory leak candidate #3 during the last 24 hours on Ubuntu: CouchDB.
dth? April 05, 2011, at 18:09 UTC
For the last time - Why wrestool uses up all your RAM
What is wrestool?
wrestool is a resource extractor used in GNOME's thumbnailer. So when you view a Win-executable, it's icon has probably been extracted by wrestool.
Now there are many people who had issues with this small program, namely that it started to use up all your RAM and grinds your system to a halt.
The reason for this behaviour can be found rather quickly. Though - without wanting to debate xmalloc - it makes me want to rip my hair out.
Take a look at the following lines pulled from the wrestool/main.c file.
/* get file size */
fi.name = argv[c];
fi.total_size = file_size(fi.name);
[...]
/* open file */
fi.file = fopen(fi.name, "rb");
[...]
/* read all of file */
fi.memory = xmalloc(fi.total_size);
if (fread(fi.memory, fi.total_size, 1, fi.file) != 1) {
..... I am at a loss for words. And I thought using mmap was lazy.