FAQ Search Today's Posts Mark Forums Read
» Video Reviews

» Linux Archive

Linux-archive is a website aiming to archive linux email lists and to make them easily accessible for linux users/developers.


» Sponsor

» Partners

» Sponsor

Go Back   Linux Archive > Redhat > Fedora User

 
 
LinkBack Thread Tools
 
Old 11-30-2007, 08:19 AM
 
Default Sound permission problem - solved

lars.bjorndal@broadpark.no (Lars Bjørndal) writes:

> "Mikkel L. Ellertson" <mikkel@infinity-ltd.com> writes:
>
>> Lars Bjørndal wrote:
>>> lars.bjorndal@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:831snd_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.
>
> To your question: I tried to run two instances of mplayer at the same
> time. And: I'm able to run two mplayer sessions at the same time from
> the same user. The problem raises if I first start mplayer for user1,
> then switches to user2 and start mplayer. Mplayer is still running on
> user1. Any suggestions?
>
> Lars

I found the solution here: http://mpd.wikia.com/wiki/Configuration. I
created the file /etc/asound.conf, with the following content:

pcm.dmixer {
type dmix
ipc_key 1024
ipc_key_add_uid false
ipc_perm 0666 # mixing for all users
slave {
pcm "hw:0,0"
period_time 0
period_size 1024
buffer_size 8192
rate 44100
}
bindings {
0 0
1 1
}
}

pcm.dsp0 {
type plug
slave.pcm "dmixer"
}

pcm.!default {
type plug
slave.pcm "dmixer"
}
pcm.default {
type plug
slave.pcm "dmixer"
}
ctl.mixer0 {
type hw
card 0
}

Lars

--
fedora-list mailing list
fedora-list@redhat.com
To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
 

Thread Tools




All times are GMT. The time now is 12:42 PM.

VBulletin, Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2007, Crawlability, Inc.
Copyright ©2007 - 2008, www.linux-archive.org