Dapper to Edgy upgrade breaks ALSA when asoundconf was previously used

[Alexander Jones]

Since upgrading to Edgy, my Audiophile 2496 no longer works with HALAudioSink. Selecting my device from Sound Preferences and running a test gives this log:

WARN (0x80519e8 - 0:00:00.288862000) alsa(17663) confmisc.c(1105):snd_func_refer: alsalib error: Unable to find definition 'defaults.pcm.ipc_key'
WARN (0x80519e8 - 0:00:00.289051000) alsa(17663) conf.c(3479):_snd_config_evaluate: alsalib error: function snd_func_refer returned error: No such file or directory
WARN (0x80519e8 - 0:00:00.289180000) alsa(17663) conf.c(3947):snd_config_expand: alsalib error: Evaluate error: No such file or directory
WARN (0x80519e8 - 0:00:00.289317000) alsa(17663) pcm.c(2146):snd_pcm_open_noupdate: alsalib error: Unknown PCM dmix:0,FORMAT=S32_LE
WARN (0x80519e8 - 0:00:00.289468000) alsa(17663) gstalsasink.c(635):gst_alsasink_open:<alsasink0> error: Playback open error: No such file or directory
INFO (0x80519e8 - 0:00:00.289678000) GST_ERROR_SYSTEM(17663) gstelement.c(1500):gst_element_message_full:<alsasink0> posting message: Could not open resource for writing.

"Unknown PCM dmix:0,FORMAT=S32_LE" seems to be the key.

This worked perfectly with kernel software mixing in Ubuntu 6.06.

Thanks

[Alexander Jones (alex-weej)]

Actually, I should further note:

alex@flash:~$ aplay --device=dmix:0 test.wav
ALSA lib confmisc.c:1105:(snd_func_refer) Unable to find definition 'defaults.pcm.ipc_key'
ALSA lib conf.c:3479:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:3947:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2146:(snd_pcm_open_noupdate) Unknown PCM dmix:0
aplay: main:547: audio open error: No such file or directory

It seems this is more of a problem with ALSA than GStreamer.

[Alexander Jones (alex-weej)]

It seems it was asoundconf to blame. I recreated my ~/.asoundrc.asoundconf file with asoundconf and now everything works.

I'm still pretty sure there's an issue to be dealt with somewhere - specifically in 6.06->6.10 upgrades, as asoundconf was previously the backend to Sound Preferences in 6.06 AFAICT.

[Alexander Jones (alex-weej)]

Bogus.

[William Voorhees (will-voorhees)]

I'm facing the same problem, I did the update this afternoon and sound stoped working, I have the same error messages, with a similar card: M-audio Revolution 7.1 -- ICE1724. I tried deleting my ~/.asoundrc.asoundconf file with out any luck, please contact me if you need more information.

[Khalid R. (khalid-789)]

Try following the guide on this link and let me know if it does any improvement (NOTE: Read the last post in the thread, by ubuntu_demon, first... important!)

http://www.ubuntuforums.org/showthread.php?t=32063&highlight=alsa+wrapper

[William Voorhees (will-voorhees)]

I ended up re-installing from scratch and have no problems after a clean install, sorry I can't be more helpful in tracking this guy down.

-Will