Public bug reported:
Binary package hint: ktorrent
Over the past days it happened to me several times that audio all of a
sudden would stop working. It seems ktorrent is causing this.
This is what mplayer said when I tried to play a video in that situation:
----------------------------------------------------------------------------------------
AO: [pulse] Failed to connect to server: Connection refused
[AO_ALSA] alsa-lib: pcm_hw.c:1321:(snd_pcm_hw_open) open /dev/snd/pcmC0D0p
failed: Device or resource busy
[AO_ALSA] alsa-lib: pcm_dmix.c:1008:(snd_pcm_dmix_open) unable to open slave
[AO_ALSA] Playback open error: Device or resource busy
[AO OSS] audio_setup: Can't open audio device /dev/dsp: Device or resource busy
[AO_ALSA] alsa-lib: pcm_hw.c:1321:(snd_pcm_hw_open) open /dev/snd/pcmC0D0p
failed: Device or resource busy
[AO_ALSA] alsa-lib: pcm_dmix.c:1008:(snd_pcm_dmix_open) unable to open slave
[AO_ALSA] Playback open error: Device or resource busy
[AO ESD] esd_open_sound failed: Connection timed out
E: context.c: waitpid(): No child processes
AO: [pulse] Failed to connect to server: Internal error
[JACK] cannot open server
ao_nas: init(): Can't open nas audio server -> nosound
[AO SDL] Samplerate: 48000Hz Channels: Stereo Format s16le
[AO_ALSA] alsa-lib: pcm_hw.c:1321:(snd_pcm_hw_open) open /dev/snd/pcmC0D0p
failed: Device or resource busy
[AO_ALSA] alsa-lib: pcm_dmix.c:1008:(snd_pcm_dmix_open) unable to open slave
[AO SDL] Unable to open audio: No available audio device
[AO_ALSA] alsa-lib: pcm_hw.c:1321:(snd_pcm_hw_open) open /dev/snd/pcmC0D0p
failed: Device or resource busy
[AO_ALSA] alsa-lib: pcm_dmix.c:1008:(snd_pcm_dmix_open) unable to open slave
[AO_ALSA] alsa-lib: pcm_hw.c:1321:(snd_pcm_hw_open) open /dev/snd/pcmC0D0p
failed: Device or resource busy
[AO_ALSA] alsa-lib: pcm_dmix.c:1008:(snd_pcm_dmix_open) unable to open slave
AL lib: alsa.c:344: Could not open playback device 'default': Device or
resource busy
AL lib: oss.c:179: Could not open /dev/dsp: Device or resource busy
[OpenAL] could not open device
Opening /dev/dvb/adapter0/audio0
DVB AUDIO DEVICE: No such file or directory
AO: [null] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
----------------------------------------------------------------------------------------
This is the output of lsof that I got (after killing knotify4 and
kmixer, which didn't help):
----------------------------------------------------------------------------------------
$ lsof|grep snd
ktorrent 25461 martin 85r CHR 116,2 5378
/dev/snd/timer
ktorrent 25461 martin 86u CHR 116,7 5655
/dev/snd/pcmC0D0p
ktorrent 25461 martin 87u CHR 116,9 5688
/dev/snd/controlC0
----------------------------------------------------------------------------------------
After closing ktorrent, all was fine again.
I don't know how to reproduce it unfortunately.
ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: fglrx
Package: ktorrent 3.2.1+dfsg.1-0ubuntu3
ProcEnviron:
LANGUAGE=
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: ktorrent
Uname: Linux 2.6.28-11-generic x86_64
** Affects: ktorrent (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug
--
ktorrent locks audio device
https://bugs.launchpad.net/bugs/372527
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