Playing sound from multiple applications?

Hi, I recently started using Arch and I'm loving it but I have one problem. My ALSA can only play sound from one application at a time, so I have to use pulseaudio for the others. But pulseaudio doesn't recognize my mic so I can't remove ALSA. ALSA just says "device busy" or something. And yes I tried to search before posting but didn't find an answer.
Thanks

This is what I found from the logs:
Jul 18 21:38:34 arch pulseaudio[946]: alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write!
Jul 18 21:38:34 arch pulseaudio[946]: alsa-sink.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers.
Jul 18 21:38:34 arch pulseaudio[946]: alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.
Jul 19 00:53:54 arch pulseaudio[946]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 19 00:53:54 arch pulseaudio[946]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 19 21:59:22 arch pulseaudio[963]: alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write!
Jul 19 21:59:22 arch pulseaudio[963]: alsa-sink.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers.
Jul 19 21:59:22 arch pulseaudio[963]: alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.
Jul 20 02:35:47 arch pulseaudio[963]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 20 02:35:47 arch pulseaudio[963]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 20 12:22:05 arch pulseaudio[981]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 20 12:22:05 arch pulseaudio[981]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 20 12:22:05 arch pulseaudio[981]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 21 01:25:49 arch pulseaudio[953]: alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write!
Jul 21 01:25:49 arch pulseaudio[953]: alsa-sink.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers.
Jul 21 01:25:49 arch pulseaudio[953]: alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.
Jul 21 14:33:44 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 21 14:33:44 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 21 14:33:44 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 22 01:58:04 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 22 01:58:04 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 22 02:20:11 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 22 02:20:11 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 22 02:48:30 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 23 00:21:44 arch pulseaudio[973]: alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write!
Jul 23 00:21:44 arch pulseaudio[973]: alsa-sink.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers.
Jul 23 00:21:44 arch pulseaudio[973]: alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.
Jul 23 11:43:46 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 23 11:43:46 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 23 11:43:56 arch pulseaudio[973]: alsa-sink.c: Error opening PCM device front:0: Device or resource busy
Jul 24 03:05:32 arch pulseaudio[954]: alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write!
Jul 24 03:05:32 arch pulseaudio[954]: alsa-sink.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers.
Jul 24 03:05:32 arch pulseaudio[954]: alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.
And yes I have gstreamer.
Last edited by nerdster (2011-07-26 00:35:45)

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Can't play sound from multiple programs

So I have this new shiny box running Arch64 with a ASRock N68-S motherboard. I installed alsa and I am able to play music just fine using amarok or mpd. However, when I try playing two sounds at once, there is a short pause and the first program becomes silent, and then the second kicks in.
According to the wiki, dmix should work automatically with this version of alsa. I tried seting up dmix "the old way" using /etc/asound.conf (hey, you never know) but no luck either.
Lspci lists my card as
00:05.0 Audio device: nVidia Corporation MCP61 High Definition Audio (rev a2)
I figured this was a bit vague and went to the manufacturer's site and found out the actual name is
5.1 CH Windows® Vista™ Premium Level HD Audio (Realtek ALC662 / VIA® VT1708S / VT1705 Audio Codec)
The Alsa wiki suggests to test dmix using these instructions but this simple test fails miserably, alsaplayer windows show up and complain "no stream found". So it seems and one of the unlucky few for which dmix doesn't just work.
However, OSS4 works with hardly no setup. But I just don't want to use it since most applications aren't OSS-aware, there is no KDE integration and so on.
What sould I do? I'd happy to report a bug upstream if necessary but I realised audio in Linux is way more complicated than previously thought and I'd rather make sure I haven't over looked something. I'm so confused I can't tell what my actual soundcard vendor is: nVidia, Realtek or Via?
edit: oh and of course, nothing of interest in /var/log/everything.log
Thanks!
Last edited by eldalion (2010-02-21 17:28:53)

eldalion wrote:I tried seting up dmix "the old way" using /etc/asound.conf (hey, you never know) but no luck either.
Not necessary. ALSA supports dmix by default. Don't edit that file.
Let me explain what's happening. mpd has a stupid default config, of using OSS rather than ALSA. And OSS screws up dmix.
For example, my ~/.mpdconf is:
music_directory "~/gnutella/downloads/Cool"
playlist_directory "~/.mpd/playlists"
db_file "~/.mpd/mpd.db"
log_file "~/.mpd/mpd.log"
error_file "~/.mpd/mpd.error"
audio_output {
type "alsa"
name "Sound Card"
options "dev=dmixer"
device "plug:dmix"
Try that, to prove to yourself that I'm right Also use this good debugging command, from the same ALSA wiki entry (because I put it there):
fuser -v /dev/snd/* /dev/dsp*
eldalion wrote:What should I do?
Step 1: File a bug with your distro, for the app (mpd) to default to ALSA instead of OSS. Defaulting to OSS these days is ridiculous - ALSA is the standard sound system in Linux, and that's not gonna change.
Please do this. I'm not doing this, because I don't use Arch or mpd any more.
Step 2: File a bug upstream, to default to ALSA instead of OSS.
Edit: I notice that Ubuntu has the right idea:
* Update mpd.conf from upstream
- Configure an ALSA output by default
Last edited by brebs (2010-02-23 07:56:16)

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Attachments:
audio.png ‏6 KB
test2.png ‏7 KB
specs.png ‏16 KB

Can you check the full model and part number from the laptop?
- Peter

Satellite L50-A-19N can't play audio from multiple sources

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I see that the option called “give exclusive mode applications priority” has been checked.
Usually different applications and programs can access the sound card simultaneously.
For example: you can hear the sound in game, while you can run your own music via an external player.
This is prevented with these options “give exclusive mode applications priority”.
Maybe you should disable (uncheck) this option to prevent the different applications for using this exclusive mode stream.
I did it for my DAC. I set the DAC for exclusive mode. Once my audio playback software starts to play music, no other software is able to share the DAC.
However, I use Win 7 and Realtek sound driver… It’s another configuration.
So it’s not known to me if your issue is related Win 8.1 system or maybe limitation of sound driver… it could be also possible that one of your sound applications don’t allow multiple sound streaming.

My iPad (4th gen) will not play sound from videos played via Facebook. Anybody have suggestions?

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Stereo should be upmixed to 5.1. But signals that already are 5.1 should not be changed. With pulseaudio on Ubuntu this was easy to do but I don't want to have pulseaudio at the moment. I had some trouble with it.
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For some reason it shows nothing. Sound is still not working but the output of mplayer is different now:
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[AO_ALSA] alsa-lib: conf.c:3425:(snd_config_hook_load) /home/florian/.asoundrc may be old or corrupted: consider to remove or fix it
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Edit2
I set a different Buffer size in .asoundrc as the comment told.
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[AO_ALSA] Unable to get initial parameters: Invalid argument
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cat /proc/asound/card0/pcm0p/sub0/hw_params
closed
speaker-test -c 6 -D surround51 -t wav gives output on front left and front right And I read it might be a problem since kernel 2.6.34
Last edited by McFlow (2010-09-07 12:36:59)

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