Lets do some thing simple. Please go into the BIOS and disable the on board
sound device.

Please tell us what happens when you boot to Grub. Do you get an error
message or does it hang, etc.? How did you restore Jaunty from backup?

I used Clonezilla for the backup and restore operations, with a USB hard drive.
By default it tries to restore Grub, but complained in this case. I suppose I
should have written this down--the output is not saved into a file, as far as I
know.

It just hangs. Something like "stage 1.5" appears on the screen, with no further
activity.

I've just upgraded to 9.10 64-bit - found the same - no sound ...
found that there's a very difficult to see grey sound icon in the
system tray - opened it to find the slider all the way down to off -
dragged it up - hey presto! sound - simple as that ... might be worth
a look

If I were to perform a clean install, I think it would probably boot. Moreover,
I have a separate /home partition, with all user-specific stuff preserved. There
would still be some advantage to accessing the present / partition, though, so
getting it to boot somehow is the task I am concentrating on at the moment.

I was able to get back in (with GAG now used as a boot selector) by installing
Grub in the root, setup (hd1,1) in this case. So now I can work on the other
problems. This apparently shows that Clonezilla can be used with confidence to
create and restore backups, anyhow.

My Kubuntu Karmic upgrade has sound and everything works... except it
seems to log itself out if left alone for a while. I may have done
that to myself in the power saving settings. Still looking...

No sound on Karmic

G'day prof 'Tim'
-the following may complete the jagged karmic jigsaw
cheers,
dar

www.unixmen.com/.../525-resolve-nosound-problem-on-ubuntu910-\
karmic-koala

Question : I installed ubuntu9.10 and now i have , how to resolve this ?

Answer : To resolve thi issue please follow the steps bellow :

Before to start check first Your sound just might be muted. See alsamixer

Go to System -->Preferences-->Sound and check outputvolume if muted or not, if
not muted then go further with the steps bellow , if was muted ( In my case when
i installed karmic koala) then is resolved just you have to unchek mute.
First, make sure that slmodemd is not running. with this command

pgrep slmodemd

if the package installed remove with :
sudo apt-get remove sl-modem-daemon
restart your computer then go to System>Administration> Softwaresources>

In the Updates tab active "Unsupported Updates (karmic-backports), The reason
from this is to install ALSA modules backports.

Now:
sudo apt-get install linux-backports-modules-alsa-karmic-generic

Add the PPA of Ubuntu Development Team Audio and updated to download and install
their version of ALSA and PulseAudio packages.