AaylaSecura
Tux's lil' helper
Joined: 09 Jun 2011
Posts: 122
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 Posted: Tue Nov 11, 2014 8:23 pm Post subject: ALSA + apulse: MPD running as mpd user blocks pulse |
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Greetings! I am using ALSA with dmix and apulse (for skype only). When I run MPD from the init.d script (as user 'mpd') it blocks sound from skype - skype gives an error:
| Code: | ALSA lib /media/tmp/tmpfs/portage/media-libs/alsa-lib-1.0.28/work/alsa-lib-1.0.28/src/pcm/pcm_dmix.c:989:(snd_pcm_dmix_open) unable to create IPC semaphore
[apulse] [error] do_connect_pcm, snd_pcm_open, Permission denied
[apulse] [error] do_connect_pcm, snd_pcm_open, Permission denied |
and starts up, but there is no sound from it and it hangs (hangs as in shows me as online, but I cannot send or receive messages and also the skype process keeps running even after I quit skype, until I send it SIGKILL).
All other applications (firefox, mplayer, etc.) use ALSA and they play fine along side MPD.
When I run /usr/bin/mpd as my user, there is no such problem. I know that MPD using PulseAudio can block all other applications from playing when it's been started from the init.d script, but in my case MPD is using ALSA, so I don't think this should happen.
The relevant part of my mpd.conf is:
| Code: | audio_output {
type "alsa"
name "ALSA sound card"
mixer_type "software" # tried with both software and Master
} |
and my asound.conf is:
| Code: | pcm.dmix51 {
type dmix
ipc_key 1024
slave {
pcm "hw:0,0"
rate 48000
channels 6
period_time 0
period_size 1024
buffer_time 0
buffer_size 4096
}
}
pcm.dmix2 {
type dmix
ipc_key 1024
slave {
pcm "hw:0,0"
rate 48000
channels 2
period_time 0
period_size 1024
buffer_time 0
buffer_size 4096
}
}
pcm.!default {
type asym
playback.pcm {
type plug
slave.pcm "dmix51"
}
capture.pcm {
type plug
slave.pcm "hw:2,0"
}
}
pcm.duplicate {
type plug
slave.pcm "dmix51"
slave.channels 6
route_policy duplicate
} |
Any ideas why it happens/how to fix or should I just stick to running MPD as my user?
P.S. I forgot to mention I'm using amd64 with app-emulation/emul-linux-x86-qtlibs |
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Multimedia
