It seems that after upgrading to Karmic you are still
booting a non-Karmic kernel. There may have been an
issue updating grub during the upgrade.
In a terminal run:
sudo mv /boot/grub/menu.lst /boot/grub/menu.lst.backup
sudo update-grub
sudo reboot
After rebooting, in a terminal run:
uname -a
Verify that the kernel you are now booting is of the
2.6.31 variety. It should look something like: "Linux bradf-home
2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:05:01 UTC 2009 x86_64 GNU/Linux"
If, after booting with a Karmic kernel you are still
having audio issues, change this bug back to new and
run:
apport-collect -p alsa-base 469434
** Changed in: alsa-driver (Ubuntu)
Status: New => Incomplete
--
No sound, 9.10 does not recognize the audio equipment.
https://bugs.launchpad.net/bugs/469434
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