Arch Linux

ezzetabi

Member

Registered: 2006-08-27

Posts: 947

Alsa needs super user privileges to work [solved?]

Today I noticed audio does not work anymore.

I tried a simple test from the command line and those are the results:

$ speaker-test -t wav -l 1

speaker-test 1.0.27.1

Playback device is default
Stream parameters are 48000Hz, S16_LE, 1 channels
WAV file(s)
ALSA lib pcm_dmix.c:989:(snd_pcm_dmix_open) unable to create IPC semaphore
Playback open error: -13,Permission denied
$ sudo speaker-test -t wav -l 1

speaker-test 1.0.27.1

Playback device is default
Stream parameters are 48000Hz, S16_LE, 1 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 2048 to 16384
Period size range from 1024 to 1024
Using max buffer size 16384
Periods = 4
was set period_size = 1024
was set buffer_size = 16384
 0 - Front Left
Time per period = 1.142177
$                                                                                                                                                                                  

A permission error when executed as normal user.

Checking my pacman log it seems it break after installing scummvm and fluidsynnth... but I cannot imagine it is related.
Any idea how to  pinpoint the problem?

Last edited by ezzetabi (2013-05-28 14:36:42)

karol

Archivist

Registered: 2009-05-06

Posts: 25,440

Re: Alsa needs super user privileges to work [solved?]

Are you using systemd?
What's the output of 'groups' for your user?

ezzetabi

Member

Registered: 2006-08-27

Posts: 947

Re: Alsa needs super user privileges to work [solved?]

Nevermind, the problem disappeared mysteriously as it appeared after updating the system...