Bug 157258 – gentoo-sources-2.6.19-r1 alsa problem - snd_pcm_dsnoop_open unable to open slave

• Product: Gentoo Linux
• Status: RESOLVED INVALID

[Description Miroslav Šulc 2006-12-05 12:44:52 UTC]

I upgraded my system and now I cannot get sound from mic nor record. I get:
ALSA lib pcm_dsnoop.c:606:(snd_pcm_dsnoop_open) unable to open slave

This happens both on gentoo-sources-2.6.19-r1 and gentoo-suspend2-2.6.18

[Comment 1 Miroslav Šulc 2006-12-05 12:47:12 UTC]

Created attachment 103411 [details]
emerge --info

This is my emerge --info

[Comment 2 Miroslav Šulc 2006-12-05 13:37:42 UTC]

Just more info.

$ rec test.wav
Send break (control-c) to end recording
ALSA lib pcm_dsnoop.c:606:(snd_pcm_dsnoop_open) unable to open slave
sox: Failed reading default: cannot open audio device

Running skype from console, making call, when call is about to be connected, I get:
ALSA lib pcm_dsnoop.c:606:(snd_pcm_dsnoop_open) unable to open slave

[Comment 3 Miroslav Šulc 2006-12-05 17:15:24 UTC]

I just found that if I restart alsasound while in KDE, I can make a call from skype (ie no error is thrown) but still recording (mic) doesn't work.

[Comment 4 Miroslav Šulc 2006-12-05 17:21:00 UTC]

Hm, but if I then play a sound from other app (like using testing button in KDE sound configuration) then the problem comes back.

[Comment 5 Chris Slycord 2007-04-13 19:17:49 UTC]

The issue is that some program is using alsa or taking control of it. And while it still has control you are trying to have another program using alsa.

[Comment 6 Mike Pagano 2007-05-14 18:03:27 UTC]

Is alsa built it or do you use it as a module?

Can you please test with the latest stable kernel and with alsa built into the kernel if it is not already and report back the results?

[Comment 7 Miroslav Šulc 2007-05-14 21:55:16 UTC]

Sorry, I forgot to close this bug. I found out the problem was that alsa autoconfig utility corrupted my alsa modules config so that was the reason it didn't work.