Linux Mint Forums

Pleased always tell us exactly which Mint (also the edition) and which hardware - you can run lspci in a terminal and post here

Well I asked for the edition - main, kde.... because they differ widely in some respects including sound

nVidia Corporation MCP61 High Definition Audio (rev a2)

That is really an Intel HDA8 sound so solutions for HDA8 should work. At least I think it is a HDA8, but I've seen reports that it is a RealTek ALC861
If so you could try to add instead of whats mentioned in the post in the link
Solution here
http://www.linuxmint.com/forum/viewtopi ... ase#p73218
Of course you have to change model=toshiba to what you have. If you don't have a computer from a major vendor try
model=auto
Either solution should fix it for you and if this borks sound just remove the line and post back and we'll have to dig a bit deeper