I am still pretty happy with my TR2 and I am almost exclusevliy using ubuntu linux.
Lately I had some trouble with my graphics in various programs, the biggest one with wine applications, but also with googleearth for example. It all comes down to the faliure notice
libGL warning: 3D driver claims to not support visual 0x4b
I googled for it, but I did not really got the answer what to do.