I tried the nouveau driver --> The problem is gone. So it's a problem with nvidia.
Interesting though: Disabling the minimizing effect in CCSM doesn't fix the bug. It still freezes when minimizing.
As I said before the problem also occurs when closing.
Then I tried the updated version of the nvidia drivers (295.49) but the bug still occurs.
And last but not least i tried the nvidia drivers from x-updates ppa (302.17) and the bug still occurs.
No I didn't change the default settings in CCSM.
I tried the nouveau driver --> The problem is gone. So it's a problem with nvidia.
Interesting though: Disabling the minimizing effect in CCSM doesn't fix the bug. It still freezes when minimizing.
As I said before the problem also occurs when closing.
Then I tried the updated version of the nvidia drivers (295.49) but the bug still occurs.
And last but not least i tried the nvidia drivers from x-updates ppa (302.17) and the bug still occurs.