That's sad to hear. I have not been keeping up with Linux audio developments. I have an M-Audio interface (Fasttrack Pro), but tend to use the built-in audio most of the time and then my old Zoom H4 acts as a decent microphone. I have an M-Audio Delta card in another PC, but it never worked quite right in the current one.
I think most interfaces are supposed to be USB class compliant these days so they will work on Windows, Mac and things like the iPad. So they should work on Linux too. I hope you find a solution for your issue.