Recently I installed Linux Mint 15 KDE when it came out. Using the hardware acceleration from the nouveau drivers seems to have acceptable performance and using nouveau+kde means the desktop resolution changing is much better than it is under nvidia with my script. KDE's compositor works really well with this screen. So far I'm quite happy with it, although I need to see how well really intensive programs work. Portal worked quite happily with nouveau and mesa and that library set before it crashed, but I'm not sure whether that was a function of graphics or something else, as there weren't any error messages.