F11: I keep losing audio

[Colin Brace]

Hi all,

Since upgrading from F10 to F11 several weeks ago, I have been having
recurring problems with audio, and I am having difficulty figuring out what
is going on.

To start with, when Gnome starts up, sounds works fine in all apps.

Then it dies. Not while I am using the system; during inactivity, so I don't
get any leads. The volume sliderbar, ie, Sound Preferences applet still
"sees" the audio device (in earlier times, when sound died, the Sound
Preferences no long recognized the audio device).

I try to restarting nasd, no luck.

I logout, login again, Gnome restarts, sounds works now.

Wild guess: something to do with Flash. From dmesg:

$ dmesg | grep npviewer
npviewer.bin[12200]: segfault at b6fa7030 ip 007c6ccd sp bf9cb688 error 4 in
libpthread-2.10.1.so[7bf000+16000]
npviewer.bin[20778] general protection ip:130a31c sp:bff88450 error:0 in
libflashplayer.so[f9c000+96d000]
npviewer.bin[11448] general protection ip:116b31c sp:bfc9bdf0 error:0 in
libflashplayer.so[dfd000+96d000]

Is npviewer "taking down" the audio when it segfaults?

I also see this line in dmesg, but it scarcely seems important:

hda-intel: IRQ timing workaround is activated for card #0. Suggest a bigger
bdl_pos_adj.

Can someone give me some ideas on how to figure out what is happening here?

Thanks.

specs: 

$ lspci  | grep Audio
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition
Audio Controller (rev 01)

uname -a
Linux ariel 2.6.29.5-191.fc11.i586 #1 SMP Tue Jun 16 23:11:39 EDT 2009 i686
i686 i386 GNU/Linux


-----
  Colin Brace
  Amsterdam
  http://lim.nl
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