no sounds through alsa, errors in syslog

[Greg A]

from /var/log/syslog:
Jul 11 08:01:00 greg-desktop pulseaudio[3698]: alsa-sink.c: Unable to set switch: Operation not permitted
Jul 11 08:01:00 greg-desktop pulseaudio[3698]: bluetooth-util.c: Error from ListAdapters reply: org.freedesktop.DBus.Error.ServiceUnknown

Jul 11 08:01:51 greg-desktop pulseaudio[3698]: alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write!
Jul 11 08:01:51 greg-desktop pulseaudio[3698]: 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 11 08:01:51 greg-desktop pulseaudio[3698]: alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail.

ProblemType: Bug
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: greg 3990 F.... mixer_applet2
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xdffdc000 irq 16'
   Mixer name : 'SigmaTel STAC9227'
   Components : 'HDA:83847618,102801db,00100201'
   Controls : 36
   Simple ctrls : 23
Card1.Amixer.info:
 Card hw:1 'U0x46d0x8b3'/'USB Device 0x46d:0x8b3 at usb-0000:04:04.1-2, full speed'
   Mixer name : 'USB Mixer'
   Components : 'USB046d:08b3'
   Controls : 2
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'Mic',0
   Capabilities: cvolume cvolume-joined cswitch cswitch-joined
   Capture channels: Mono
   Limits: Capture 0 - 3
   Mono: Capture 2 [67%] [50.00dB] [on]
Date: Sat Jul 11 08:05:16 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: nvidia
Package: alsa-base 1.0.20+dfsg-1ubuntu4
PackageArchitecture: all
ProcEnviron:
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-2.17-generic
SourcePackage: alsa-driver
Uname: Linux 2.6.31-2-generic i686

[Mathieu Pellerin (nirvn-asia)]

Same problem here, on a Dell Latitude D830. It seems to have appeared after I've applied latest kernel 2.5.31-2 update.

Bug 397890 looks like a duplicate and mentions a work-around to re enable sound pending resolution of this problem.

[Greg A (etulfetulf)]

Yes Bug 397890 was also me, I forgot I had opened a bug report already when discovering these errors!

[Mathieu Pellerin (nirvn-asia)]

Problem persisting on kernel 2.6.31-3.

[Brad Figg (brad-figg)]

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p alsa-base 398080

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

[Brad Figg (brad-figg)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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