Sound permission problem

[Mikkel L. Ellertson]

Lars Bjørndal wrote:
> Hello, list!
> Does anyone know the solution to my problem?
> 
> Thank you!
> 
> lars.bjorndal at broadpark.no (Lars Bjørndal) writes:
> 
>> Hi!
>>
>> I'm running Fedora F7, without X. I'm able to do 'mplayer <url>' for
>> one user at a time. However, I'm not able to do 'mplayer <url>' for
>> one user, and then 'mplayer <another-url>' as another user. Then I get
>> the following error message:
>>
>> [AO_ALSA] alsa-lib: pcm_dmix.c:831:(snd_pcm_dmix_open) unable to
>> create IPC semaphore
>> [AO_ALSA] Playback open error: Permission denied
>>
>> It's not important to me to play mplayer that way, however, I want to
>> be able to run speech-dispathcer (which, BTW should have an rpm pacage
>> for Fedora) and play mplayer at the same time. How could I solve this
>> permission problem?
>>
>> I've tried to put in /etc/security/console.perms.d/50-default.perms:
>>
>> <console>  0666 <sound>      0600 root,
>>
>> and ls -al /dev/audio gives:
>>
>> crw-rw-rw-+ 1 lrs root 14, 4 2007-11-29 10:00 /dev/audio
>>
>>
>> Lars
> 
Dumb question - is the first user's mplayer closed before the second
user tries to run their copy of mplayer? I am not familiar with the
error message, but I am guessing that the problem is that something
has a connection to the mixer open, and so you can not open another.
If that is the case, you may be able to do something using the jack
add-ons to alsa.

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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