Looks like some other application is grabbing /dev/snd/* while PA is,
too:

D: alsa-source.c: snd_pcm_mmap_commit: Broken pipe
D: alsa-source.c: snd_pcm_mmap_commit: Buffer overrun!
I: (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_PREPARE failed
I: (alsa-lib)pcm.c: cannot recovery from overrun, prepare failed:
Device or resource busy
E: alsa-source.c: snd_pcm_mmap_commit: Device or resource busy
I: module.c: Unloading "module-alsa-card" (index: #4).
D: module-always-sink.c: Autoloading null-sink as no other sinks detected.
I: sink.c: Created sink 1 "auto_null" with sample spec s16le 2ch
44100Hz and channel map front-left,front-right
I: sink.c:     device.description = "Dummy Output"
I: sink.c:     device.class = "abstract"
I: sink.c:     device.icon_name = "audio-card"
I: source.c: Created source 2 "auto_null.monitor" with sample spec
s16le 2ch 44100Hz and channel map front-left,front-right
I: source.c:     device.description = "Monitor of Dummy Output"
I: source.c:     device.class = "monitor"
I: source.c:     device.icon_name = "audio-input-microphone"
D: module-null-sink.c: Thread starting up

So, what's doing that? What'


On Sat, Oct 31, 2009 at 1:09 AM, Irihapeti <jea...@xtra.co.nz> wrote:
> OK, I have followed the instructions, and here is the log file.
>
> ** Attachment added: "pulseverbose.log"
>   http://launchpadlibrarian.net/34746262/pulseverbose.log
>
> --
> Hardware device disappearing from Sound Preferences
> https://bugs.launchpad.net/bugs/465942
> You received this bug notification because you are a member of Ubuntu
> Audio Team, which is subscribed to alsa-driver in ubuntu.
>
> Status in “alsa-driver” package in Ubuntu: New
>
> Bug description:
> Tried to configure audio using "Sound Preferences". The driver initially 
> showed in the window but then it disappeared. Rebooting is needed to have it 
> reappear. But it disappears again as soon as I try to configure it.
>
> I ran the following command *after* the driver had disappeared from the Sound 
> Prefs window. Evidently, Alsa still knows it's there.
>
> $ aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: VT82xx [HDA VIA VT82xx], device 0: AD198x Analog [AD198x Analog]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
> card 0: VT82xx [HDA VIA VT82xx], device 1: AD198x Digital [AD198x Digital]
>  Subdevices: 1/1
>  Subdevice #0: subdevice #0
>
> As far as I can tell, all the kernel modules are loaded.
>
> Using the 9.10 release - fresh install, no upgrade. Have had no problems with 
> earlier releases (did not use 8.10 or 9.04).
>
> ProblemType: Bug
> Architecture: i386
> ArecordDevices:
>  **** List of CAPTURE Hardware Devices ****
>  card 0: VT82xx [HDA VIA VT82xx], device 0: AD198x Analog [AD198x Analog]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/dsp', 
> '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', 
> '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', 
> '/dev/snd/seq', '/dev/snd/timer', '/dev/sequencer', '/dev/sequencer2'] failed 
> with exit code 1:
> Card0.Amixer.info:
>  Card hw:0 'VT82xx'/'HDA VIA VT82xx at 0xcfffc000 irq 17'
>   Mixer name   : 'Analog Devices AD1986A'
>   Components   : 'HDA:11d41986,1043818f,00100500'
>   Controls      : 37
>   Simple ctrls  : 21
> CheckboxCommand: alsa_record_playback
> CheckboxDescription:
>  Open the volume control application by right-clicking on the speaker icon in 
> the panel and selecting "Sound Preferences".  Select the "Input" tab and 
> choose any alternate (non-default) device(s).  Select the "Output" tab and 
> choose any alternate (non-default) device(s).  When you are done, click the 
> Test button, then speak into the microphone. After a few seconds, your speech 
> will be played back to you.
>
>  Did you hear your speech played back?
> CheckboxTest: alsa_record_playback_alternates
> Date: Sat Oct 31 15:06:56 2009
> DistroRelease: Ubuntu 9.10
> InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
> Package: alsa-base 1.0.20+dfsg-1ubuntu5
> PackageArchitecture: all
> ProcEnviron:
>  SHELL=/bin/bash
>  LANG=en_NZ.UTF-8
> ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
> SourcePackage: alsa-driver
> Tags: checkbox-bug
> Uname: Linux 2.6.31-14-generic i686
> XsessionErrors:
>  (gnome-settings-daemon:1625): GLib-CRITICAL **: g_propagate_error: assertion 
> `src != NULL' failed
>  (gnome-settings-daemon:1625): GLib-CRITICAL **: g_propagate_error: assertion 
> `src != NULL' failed
>  (polkit-gnome-authentication-agent-1:1710): GLib-CRITICAL **: 
> g_once_init_leave: assertion `initialization_value != 0' failed
>  (nautilus:1681): Eel-CRITICAL **: eel_preferences_get_boolean: assertion 
> `preferences_is_initialized ()' failed
>

-- 
Hardware device disappearing from Sound Preferences
https://bugs.launchpad.net/bugs/465942
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.

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