Created attachment 124577 [details]
GTX 650 Ti Boost - nouveau 1.0.12 crashes randomly but regularly and freezes Xorg, no mouse no keyboard. SSH still available. Cannot switch to another terminal.
Some people have reported success by running with NVIDIA context switching firmware (ctxsw fw). Have a look at bug 93629 for some details.
*** This bug has been marked as a duplicate of bug 100567 ***