Sound in Ubuntu 8.04

[Jury Levykin]

Hi All!

Currently I have got a problem with sound. After I reloaded my laptop
(IBM ThinkPad Z60t) it does not play any sound.
Earlier I have already met the problem. The sound sometimes plays
normally, sometimes silently, sometimes absolutely disappears without
any actions from me!
Though from Windows the sound plays permanently normally.

What logs I can look at?
Please advise me anything how to resolve the problem!


Thanks,
Jury