Arch Linux

mrcold

Member

Registered: 2008-01-24

Posts: 149

ALSA is broken

i went to play a movie with mplayer, from the command line and got no sound.  I tried the sound on MOC, and it still worked, so i tried it again with the gui mplayer.  The sound worked fine there.  I tried again from the command line and got no sound again.  Then.. the sound stopped working on the gui mplayer.  I restarted the computer thinking that it was something running that i was unaware of(or something like that) and now i get no sound from anything.
This is the error i get from mplayer.  it is the same error that showed up the first time i noticed the problem.

==========================================================================
[AO OSS] audio_setup: Can't open audio device /dev/dsp: Permission denied
[AO_ALSA] alsa-lib: confmisc.c:768:(parse_card) cannot find card '0'
[AO_ALSA] alsa-lib: conf.c:3510:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device
[AO_ALSA] alsa-lib: confmisc.c:392:(snd_func_concat) error evaluating strings
[AO_ALSA] alsa-lib: conf.c:3510:(_snd_config_evaluate) function snd_func_concat returned error: No such device
[AO_ALSA] alsa-lib: confmisc.c:1251:(snd_func_refer) error evaluating name
[AO_ALSA] alsa-lib: conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such device
[AO_ALSA] alsa-lib: conf.c:3982:(snd_config_expand) Evaluate error: No such device
[AO_ALSA] alsa-lib: pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM default
[AO_ALSA] Playback open error: No such device
[JACK] cannot open server
[AO SDL] Samplerate: 48000Hz Channels: Stereo Format s16le
[AO_ALSA] alsa-lib: confmisc.c:768:(parse_card) cannot find card '0'
[AO_ALSA] alsa-lib: conf.c:3510:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device
[AO_ALSA] alsa-lib: confmisc.c:392:(snd_func_concat) error evaluating strings
[AO_ALSA] alsa-lib: conf.c:3510:(_snd_config_evaluate) function snd_func_concat returned error: No such device
[AO_ALSA] alsa-lib: confmisc.c:1251:(snd_func_refer) error evaluating name
[AO_ALSA] alsa-lib: conf.c:3510:(_snd_config_evaluate) function snd_func_refer returned error: No such device
[AO_ALSA] alsa-lib: conf.c:3982:(snd_config_expand) Evaluate error: No such device
[AO_ALSA] alsa-lib: pcm.c:2145:(snd_pcm_open_noupdate) Unknown PCM default
[AO SDL] Unable to open audio: No available audio 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...

I tried reinstalling alsa, but that didn't work.  I don't know what else to do.

brebs

Member

Registered: 2007-04-03

Posts: 3,066

Re: ALSA is broken

Can't open audio device /dev/dsp: Permission denied

ls -l /dev/dsp
lrwxrwxrwx 1 root root 9 2008-03-05 17:38 /dev/dsp -> sound/dsp

So follow the symlink...

ls -l /dev/sound/dsp
crw-rw---- 1 root audio 14, 3 2008-03-06 01:05 /dev/sound/dsp

So you must be in the "audio" group. And it is udev which assigned "rw-rw----" permissions.

Last edited by brebs (2008-03-06 03:09:14)

---

Improve your desktop responsiveness and font rendering and ALSA sound and BusyBox init

mrcold

Member

Registered: 2008-01-24

Posts: 149

Re: ALSA is broken

OOOOOK
thanks for that. 
I had messed with my groups earlier and must have messed it up.  Problem is solved
Thanks

int0r

Member

Registered: 2009-03-13

Posts: 1

Re: ALSA is broken

-

Last edited by int0r (2011-03-29 12:12:48)

Ranguvar

Member

From: Our collective subconscious

Registered: 2008-08-12

Posts: 2,515

Website

Re: ALSA is broken

By following the Wiki

Please mark thread as [SOLVED] if it is so!

Last edited by Ranguvar (2009-03-13 02:28:25)