gnome-volume-control: device input not shown until switching profiles

[David Henningsson]

Binary package hint: gnome-media

I have two soundcards, one AC'97 and one ESI Juli@. When I boot up Karmic AMD64 Beta, Live-CD, and start gnome-volume-control, on the hardware tab both cards are correctly listed as "Analog stereo duplex". However, on the Input tab, only the AC'97 (listed as "Internal Audio") appears (expected both soundcards).

Workaround: If I then go to the hardware tab, and switch profile for ESI Juli@ first to "Analog stereo output" and then back to "Analog stereo duplex", then switch to the input tab, both soundcards are listed as devices.

ProblemType: Bug
Architecture: amd64
Date: Sat Oct 3 15:08:50 2009
DistroRelease: Ubuntu 9.10
LiveMediaBuild: Ubuntu 9.10 "Karmic Koala" - Beta amd64 (20090929.2)
Package: gnome-media 2.28.0-0ubuntu1
ProcEnviron:
 LANG=sv_SE.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-11.36-generic
SourcePackage: gnome-media
Uname: Linux 2.6.31-11-generic x86_64

[Chris Coulson (chrisccoulson)]

Not confirming the issue here. Please run the following, follow the steps necessary to trigger the bug, and then attach the resulting file to this bug report:

gnome-volume-control --debug 2>&1 | tee ~/gvc.log

[David Henningsson (diwic)]

So, as you can see pulseaudio loads the sink only after having changed back to "Analog stereo duplex".

As a side note, recording works fine with programs such as QARecord (with alsa device=plughw:CARD=Juli) both before and after the profile change.

Could this be two bugs in one? One is in pulseaudio - not loading the source for Juli@, but then, shouldn't gnome-volume-control detect that, and set the profile to "Analog stereo output" instead of "Analog stereo duplex" then...?

[David Henningsson (diwic)]

I meant to say: "So, as you can see pulseaudio loads the SOURCE"...

[David Henningsson (diwic)]

For what it's worth, perhaps a pulseaudio -vvvv could help analyze what is going wrong.

[David Henningsson (diwic)]

Some more research: The error messages I see in my pulseaudio.log are very close to what I see in this bug: https://bugzilla.redhat.com/show_bug.cgi?id=525595
And, both of us have ICE1724 sound cards.

[David Henningsson (diwic)]

This patch to the linux kernel fixes the underlying issue for me.

[David Henningsson (diwic)]

Fix committed here:
http://git.kernel.org/?p=linux/kernel/git/tiwai/sound-2.6.git;a=commit;h=bd3c200e6d5495343c91db66d2acf1853b57a141

[Uri Sivan (tartif)]

Can confirm the exact symptoms of the original problem, including the workaround.
Can also confirm that applying the patch to the ice1724 driver solves the problem.

[Sebastien Bacher (seb128)]

not a gnome-media bug there