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Tasklist

FS#4382 - Kernel alsa freeze / broken oss emulation 2.6.16.1-5/-6

Attached to Project: Arch Linux
Opened by Martin Mortensen (loke) - Wednesday, 05 April 2006, 19:05 GMT
Last edited by Tobias Powalowski (tpowa) - Thursday, 06 April 2006, 09:32 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Architecture not specified
Severity Critical
Priority Normal
Reported Version 0.7.1 Noodle
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

This is regarding the 2.6.16.1 stock kernel.
I have experienced some random freeze for some time - this is _NOT_ the Xserver crashing. I am not able to get a terminal screen with ctrl+alt+backspace, ctrl+alt+f1 and so on. SSH daemon is always running, but I get timeout when I try to ssh from my laptop.

Also I have been testing an "overload" of the kernel, together with another Arch user.
This is what I/we do:
Open let's say 5 terminal windows, in every terminal make mplayer play a song (try with the same song). While 5 mplayers are playing the same song, the music lags extremely - now try in one of the windows to wind forward and backwards a little. This will make the music and the whole system to freeze completely. There's nothing to do than push the reboot button.
This is tested with two different systems, one running 2.6.16.1-5 and the other 2.6.16.1-6. This issue _does not_ occur with the 2.6.15 kernel.
This task depends upon

Closed by  Tobias Powalowski (tpowa)
Thursday, 06 April 2006, 09:51 GMT
Reason for closing:  Fixed
Comment by Glenn Matthys (RedShift) - Wednesday, 05 April 2006, 20:54 GMT
I cannot confirm this. I have opened 5 xterms, with each playing the same song with mplayer. I tried skipping back and forward in all windows but nothing abnormal happened. I kept another xterm open with top, and nothing special happened. My kernel package is 2.6.16.1-4

Most likely it will be a problem with concurrency on your sound card's driver, confirm that you are using ALSA and report a bug at the ALSA project: https://bugtrack.alsa-project.org/

(btw, my soundcard is a SoundBlaster Live! Digital (01:08.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 0a)), what's yours?)

Glenn
Comment by Martin Mortensen (loke) - Wednesday, 05 April 2006, 20:56 GMT
I have a Creative SoundBlaster Audigy 2 (emu10k1).
Comment by Glenn Matthys (RedShift) - Wednesday, 05 April 2006, 21:01 GMT
Do you happen to have another sound card or have one onboard the motherboard? If so, can you try using that one and see if the problem persists?

Glenn
Comment by Martin Mortensen (loke) - Wednesday, 05 April 2006, 21:03 GMT
Yes an AC97 onboard sound card (it's disabled) - which I haven't been able to make work with linux
Comment by Jacob Bang (julemand101) - Wednesday, 05 April 2006, 21:12 GMT
Try open more than 5 xterms. Maybe 10-15. My computer freeze with 5 bug also with 10-15.

I have also the bug in tty with screen. 10-20 mplayer's play the same song and i get a kernel panic. The 2.6.15 kernel make no kernel panic.
Comment by Frank Oosterhuis (FrankTM) - Wednesday, 05 April 2006, 21:51 GMT
It happened to me aswell... serveral times...
Creative Soundblaster 5.1 ...

each time sometime with music... like xmms or mplayer-plugin


00:0d.0 Multimedia audio controller: Creative Labs|SB Live! (audio) (snd-emu10k1 )
Comment by Tomas Groth (tgc) - Wednesday, 05 April 2006, 22:44 GMT
I have the same problem with only 2 xterms!!
I use the snd_trident alsa driver. Never had problems before... Maybe it's the backported alsa from 2.6.17? There exist a bug and a patch for a problem which sound alot like this: http://bugzilla.kernel.org/show_bug.cgi?id=6329
Comment by Snarkout (snarkout) - Thursday, 06 April 2006, 03:27 GMT
Same issue with an old Audigy (emu10k1). I have also had this issue while playing an mp3 and unmounting/ejecting my iPod.
Comment by Snarkout (snarkout) - Thursday, 06 April 2006, 05:51 GMT
Just had my box lock hard while watching a flash animation when kmail sounded it's new-mail notification. Hardware sound (no sound system that is), stock kernel, kde desktop.
Comment by Tobias Powalowski (tpowa) - Thursday, 06 April 2006, 06:16 GMT
qwell alsa is broken atm i have found a fix for it will upload a new kernel soon
Comment by Tobias Powalowski (tpowa) - Thursday, 06 April 2006, 06:45 GMT
new kernel should fix the issue, could you please confirm?
thanks
Comment by Jacob Bang (julemand101) - Thursday, 06 April 2006, 07:26 GMT
I have take a foto with the bug:
http://hjlug.linuxkiosken.dk/privat/IMG_1745.JPG

The error come if I play in tty with lots of screen.
Comment by Tobias Powalowski (tpowa) - Thursday, 06 April 2006, 07:27 GMT
try to update to -7 kernel and report success
Comment by Jacob Bang (julemand101) - Thursday, 06 April 2006, 07:45 GMT
Im in school now but i try when I come home ;)
Comment by Glenn Matthys (RedShift) - Thursday, 06 April 2006, 08:53 GMT
I still cannot get this to work. Are you guys sure you are using ALSA to play your music??

Glenn
Comment by Tobias Powalowski (tpowa) - Thursday, 06 April 2006, 08:55 GMT
affected kernels are only -5 and -6!
Comment by Tomas Groth (tgc) - Thursday, 06 April 2006, 09:48 GMT
The new kernel fixes the problem for me. thanks!

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