** Description changed:
Binary package hint: pulseaudio
I'm assuming that ubuntu-bug adds all the technical information about my
system, so I'll skip on that.
In short, on Jaunty - sound from game was fine on default settings.
On Karmic - sound 'crackles' at first, and then eventually just dies. No
sound coming from game at all. Checking pavucontrol, it's not emitting
any sound. Nothing changed with the game. The game will also hang on
exit until I kill the games output stream in pavucontrol. ("the hang on
exit is caused by snd_pcm_writei hanging (gets stuck in a blocking poll
in libasound)")
Now, nobody really knows what's going on, so I'll just dump all that I
know at first.
The problem is somewhere in the alsa<->PA layer.
Changing the games sound buffer to be 4*4096 fixed the problem for me
("what changes is that snd_pcm_hw_params_set_buffer_size_near gets
passed a larger value")
It's affecting certain HDA Intel sound chipsets (not all HDA intel).
Mangler project says that the default latency changed:
http://www.mangler.org/2009/10/two-major-fixes-today/
There are many people on the games forum with this issue, although I
can't give direct links as its in closed beta. But here are various
things people have posted, that worked for some, and not for others:
http://paste.pocoo.org/show/151760/
http://paste.pocoo.org/show/151762/
Ubuntu forums thread regarding sound:
http://ubuntuforums.org/showthread.php?t=1309656
http://ubuntuforums.org/showthread.php?t=1321972
+ http://ubuntuforums.org/showthread.php?p=8354182
ProblemType: Bug
Architecture: amd64
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf8400000 irq 20'
Mixer name : 'Realtek ALC268'
Components : 'HDA:10ec0268,14c00025,00100003
HDA:10573055,10573055,00100700'
Controls : 15
Simple ctrls : 12
Card1.Amixer.info:
Card hw:1 'Audio'/'Plantronics Wireless Audio Plantronics Wireless Audio at
usb-0000:00:1d.0-1, fu'
Mixer name : 'USB Mixer'
Components : 'USB047f:d955'
Controls : 4
Simple ctrls : 2
Date: Thu Nov 19 15:26:11 2009
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate amd64
(20091020.3)
NonfreeKernelModules: nvidia
Package: pulseaudio 1:0.9.19-0ubuntu4
ProcEnviron:
LANG=en_CA.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.48+ureadahead2-generic
SourcePackage: pulseaudio
Uname: Linux 2.6.31-14-generic x86_64
--
Game that uses ALSA's sound crackles/dies quickly in Karmic
https://bugs.launchpad.net/bugs/485488
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