[ubuntu-uk] 10.04 lost sound

[George Tripp]

Not sure what happened (or what I've done!) but I don't seem to have sound any more.

I'm convinced it's a software issue as if I boot from a live CD the sound works OK.

I've tried uninstalling / reinstalling alsa & pulse in synaptic to no avail + various terminal commands (doing similar things) found in on-line forums. All to no avail.

Is there a way to reinstall the sound system?

Can anyone point me in the right direction as to how I should proceed.

Thanks in advance for any suggestions.

George