What HW/SW works with Ubuntu Studio?

[Larry David]

Hi - I'm a Mac user and musician.  I'm thinking of switching to Linux  
with my next laptop, and am trying to figure out if I can use my  
audio interfaces, and what software is really useable.  What are  
people using for audio/MIDI interfaces, and what software do you use  
- DAW, plugins, softsynths, etc.?

It seems like there is as much debugging and even coding involved  
with doing music on a Linux machine as there is actual music  
production.  Does anyone have a setup that just works?

Thanks for the info.

ld