A NOTE has been added to this issue. ====================================================================== <https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1612> ====================================================================== Reported By: Manolo Assigned To: ====================================================================== Project: ALSA - driver Issue ID: 1612 Category: 1_OTHERS Reproducibility: always Severity: major Priority: normal Status: new Distribution: Ubuntu 5.10 Breezy Kernel Version: Linux 2.6.12 ====================================================================== Date Submitted: 12-02-2005 17:51 CET Last Modified: 08-05-2006 14:55 CEST ====================================================================== Summary: Ubuntu5.10 not configured for Alsa device:surround51? Description: Hardware Motherboard: Abit Ic7, Audio: Onboard (Intel ICH5) RealTek ALC650F 6-Channel AC97 CODEC. uP: Pentium4, Hyperthreading, 3Ghz Software Ubuntu 5.10 Custom compiled kernel from 'linux-source-2.6.12 2.6.12-10.24' make menuconfig Device Drivers Sound <M> Sound card support Advanced Linux Sound Architecture ---> <M> Advanced Linux Sound Architecture <M> Sequencer support <M> Sequencer dummy client <M> OSS Mixer API <M> OSS PCM (digital audio) API [*] OSS Sequencer API <M> RTC Timer support PCI devices ---> <M> All drivers <M> when option available. Open Sound System ---> < > Open Sound System Compiled Alsa packages: alsa-driver-1.0.10 alsa-lib-1.0.10 alsa-utils-1.0.10 # configure --disable-nls: configure fails otherwise. alsa-oss alsa-plugins-1.0.10 # configure,pcm/Makefile.in:Modified to compile without jack. Note: At boot, if file /var/lib/alsa/asound.state does not exist, file /etc/asound.state is overwritten with default values (No surround sound!). Alsa package is not responsible for this (Ubuntu5.10 or Kernel2.6.12??). Sound Applications aplay (alsa-utils-1.0.10) audacity 1.2.3 #Device /dev/dsp xmms 1.2.10 #plugin /usr/lib/xmms/Input/libwav.so (does not accept 5.1ChannelFile.wav) replaced by older version (Ubuntu 4.10). mplayer 4.0.2 xine v0.99.3 esd daemon running: aplay -Dsurround51 File.wav #GnomePanel or gnome-terminal 5.1ChannelFile.wav, 2ChannelFile.wav: Sound Ok. .xsession-errors fills with: ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave aplay -Ddefault File.wav # GnomePanel or gnome-terminal 2ChannelFile.wav: Sound Ok. No output sent to .xsession-errors audacity #GnomePanel Error Message: There was an error initializing the audio i/o layer. You will not be able to play or record audio. Error: Host error. audacity #gnome-terminal Most of the times application starts without error message. xmms #OutputPlugin:Alsa;AudioDevice:default.GnomePanel or gnome-terminal Application starts without error message No output sent to .xsession-errors 2ChannelFile.wav: Sound Ok. xmms #OutputPlugin:Alsa;AudioDevice:surround51.GnomePanel Error Message: Couldn't open audio. Please check that: Your soundcard is configured properly You have the correct output plugin selected No other program is blocking the soundcard. After several Play/ErrorMessage: 5.1ChannelFile.wav, 2ChannelFile.wav: Sound Ok. .xsession-errors fills with: ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave xmms #OutputPlugin:Alsa;AudioDevice:surround51.gnome-terminal Most of the times application starts without error message. 5.1ChannelFile.wav, 2ChannelFile.wav: Sound Ok. .xsession-errors fills with: ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave mplayer # 'mplayer -v -ao alsa:device=surround51 -channels 6' No StdError error messages (-v) All kinds of files and DVDs (Multichannel AC3) play Ok. .xsession-errors fills with: ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave xine # 'xine --verbose --audio-driver alsa';SpeakerArrangement:Surround5.1 Error Message: The audio device is unavailable. Please verify if another program already uses it. StdError error messages (--verbose): audio_alsa_out: snd_pcm_open() of plug:surround51:0 failed: Device or resource busy audio_alsa_out: >>> check if another program already uses PCM <<< After several Play/ErrorMessage: All kinds of files and DVDs (Multichannel AC3) play Ok. .xsession-errors fills with: ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave xine # 'xine --verbose --audio-driver alsa';SpeakerArrangement:Stereo2.0 No error Message No StdError error messages All kinds of files and DVDs play Ok. Multichannel AC3 downshifted to 2 Channels. No output sent to .xsession-errors esd daemon NOT running (killall esd): aplay -Dsurround51 File.wav #GnomePanel or gnome-terminal 5.1ChannelFile.wav, 2ChannelFile.wav: Sound Ok. .xsession-errors fills with: ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave aplay -Ddefault File.wav # GnomePanel or gnome-terminal 2ChannelFile.wav: Sound Ok. No output sent to .xsession-errors audacity #GnomePanel or gnome-terminal Application starts without error message xmms #OutputPlugin:Alsa;AudioDevice:default.GnomePanel or gnome-terminal Application starts without error message No output sent to .xsession-errors 2ChannelFile.wav: Sound Ok. xmms #OutputPlugin:Alsa;AudioDevice:surround51.GnomePanel or gnome-terminal Application starts without error message 5.1ChannelFile.wav, 2ChannelFile.wav: Sound Ok. .xsession-errors fills with: ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave mplayer # 'mplayer -v -ao alsa:device=surround51 -channels 6' No StdError error messages (-v) All kinds of files and DVDs (Multichannel AC3) play Ok. .xsession-errors fills with: ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave xine # 'xine --verbose --audio-driver alsa';SpeakerArrangement:Surround5.1 Error Message: The audio device is unavailable. Please verify if another program already uses it. StdError error messages (--verbose): audio_alsa_out: snd_pcm_open() of plug:surround51:0 failed: Device or resource busy audio_alsa_out: >>> check if another program already uses PCM <<< After several Play/ErrorMessage: All kinds of files and DVDs (Multichannel AC3) play Ok. .xsession-errors fills with: ALSA lib pcm_dmix.c:819:(snd_pcm_dmix_open) unable to open slave xine # 'xine --verbose --audio-driver alsa';SpeakerArrangement:Stereo2.0 No error Message No StdError error messages All kinds of files and DVDs play Ok. Multichannel AC3 downshifted to 2 Channels. No output sent to .xsession-errors ====================================================================== ---------------------------------------------------------------------- Raymond - 08-05-06 10:43 ---------------------------------------------------------------------- subdevices_avail equal to zero means one application already use the playback device If the sound card does not support hardware mixing (i.e. subdevices_count: 1), all application need to use 'dmix' throught 'default' device. You can play surround51 only when subdevices_avail equal to 1 cat /proc/asound/card0/pcm0p/info card: 0 device: 0 subdevice: 0 stream: PLAYBACK id: Intel ICH name: Intel ICH5 subname: subdevice #0 class: 0 subclass: 0 subdevices_count: 1 subdevices_avail: 0 ---------------------------------------------------------------------- Manolo - 08-05-06 14:55 ---------------------------------------------------------------------- Thank you Raymond, >subdevices_avail equal to zero means one application already >use the playback device, most likely a sound server daemon 'esd'. I wrote in https://launchpad.net/distros/ubuntu/+source/alsa-lib/+bug/26483: { With the present setup (default Ubuntu), if 'esd' is not running ('killall esd'), applications do not cause alsa to output 'ALSA lib pcm_dmix.c:802: (snd_pcm_dmix_open) unable to open slave' to $HOME/.xsession-errors. } This confirms the name I gave this bug: "Ubuntu5.10 not configured for Alsa" It is good to know the reason for the error messages but It does not help me in any way. If would rather have the error messages than stop 'esd'. Best regards, Manolo. Issue History Date Modified Username Field Change ====================================================================== 12-02-05 17:51 Manolo New Issue 12-02-05 17:51 Manolo Distribution => Ubuntu 5.10 Breezy 12-02-05 17:51 Manolo Kernel Version => Linux 2.6.12 12-03-05 13:54 Manolo Note Added: 0006898 07-28-06 05:39 Raymond Note Added: 0011283 08-02-06 20:15 Manolo Note Added: 0011390 08-03-06 03:56 Raymond Note Added: 0011394 08-03-06 05:33 Raymond Note Edited: 0011394 08-03-06 17:37 Manolo Note Added: 0011405 08-03-06 18:20 Raymond Note Added: 0011406 08-04-06 03:29 Raymond Note Edited: 0011406 08-04-06 05:25 Raymond Note Edited: 0011406 08-04-06 09:51 Raymond Note Edited: 0011406 08-04-06 10:41 Manolo Note Added: 0011418 08-04-06 10:43 Manolo Note Edited: 0011418 08-04-06 15:18 Raymond Note Added: 0011419 08-05-06 06:55 Raymond Note Edited: 0011419 08-05-06 10:13 Manolo Note Added: 0011424 08-05-06 10:13 Manolo File Added: RequestedData.txt 08-05-06 10:31 Raymond Note Added: 0011425 08-05-06 10:36 Raymond Note Edited: 0011425 08-05-06 10:41 Raymond Note Edited: 0011425 08-05-06 10:43 Raymond Note Edited: 0011425 08-05-06 14:55 Manolo Note Added: 0011435 ====================================================================== ------------------------------------------------------------------------- Take Surveys. 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