That would mean another visit to the tech. I don't have another video card as
the one on the motherboard is no good.

And why doesn't XP get the cards confused? If the new video card took over
sounds in the system, the mike wouldn't work in XP and it does.
XP sees the sound card as a Realtec. The problem is only in Ubuntu.
Ubuntu and XP are 2 different hard drives on the same machine.