On desktop computer I have one onboard sound device that is disabled in BIOS and a Sound Blaster PCI64 that is enabled. I am using Ubuntu 10.04.

Sound is working normal but when I try to use a microphone the recording works for 3-5 seconds, then suddenly stops (Sound recorder application says "Disconnected") and also the sound problems occur.

I checked Multimedia audio controller's name - Ensoniq ES1370 [AudioPCI] (rev01). That's strange since I am using Sound Blaster.

Do I just need a new driver, or a problem is somewhere else?
What driver should I install then?