I may have exactly the same problem. I have a K8NGM2-FID motherboard
with built in audio ("Realtek ALC880" chipset, I believe), plus a couple
of other cards with audio (one sound card, one a/v card). I force all
three into a fixed order (otherwise they change places randomly each
reboot which is a real pita for some applications like skype), using the
following /etc/modprobe.d/soundcards file:
options snd_emu10k1 index=0
options snd_hda_intel index=1
options snd_bt87x index=2
The hda_intel is the built-in audio. This worked perfectly for a long
time, but then the built-in (hda_intel) stopped working at exactly the
same kernel upgrade mentioned above (last worked for me on
2.6.24-19-generic; I am also running Hardy). The other two still work
fine. The hda_intel audio doesn't exist at all now (it's not in
/proc/asound/cards, so it's not merely a mute problem or anything like
that).
"dmesg | grep sound" gives;
[ 46.111028] ALSA
/build/buildd/linux-ubuntu-modules-2.6.24-2.6.24/debian/build/build-generic/sound/alsa-driver/acore/init.c:174:
cannot find the slot for index 1 (range 0-1), error: -16
[ 46.111124] ALSA
/build/buildd/linux-ubuntu-modules-2.6.24-2.6.24/debian/build/build-generic/sound/alsa-driver/pci/hda/../../alsa-kernel/pci/hda/hda_intel.c:1946:
hda-intel: Error creating card!
[ 46.238386] ALSA
/build/buildd/linux-ubuntu-modules-2.6.24-2.6.24/debian/build/build-generic/sound/alsa-driver/pci/bt87x.c:947:
bt87x0: Using board 1, analog, digital (rate 32000 Hz)
If this is indeed the same problem, let me know if any more info would
help. I've waited a few more kernel upgrades to see if this would start
working again, but it hasn't (so for now I have to keep rebooting into
the old kernel manually if I want to use skype...). This audio hardware
has been working for a long time under Ubuntu so it's kind of surprising
to see it break and stay broken. (Could be my modprobe file, I
realized, but even that was working for a long time and still does under
the old kernel. If I've done something obviously wrong there let me
know. :)
--
82801H not detected by 2.6.24-22-generic. Detected by 2.6.24-19-generic
https://bugs.launchpad.net/bugs/303513
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