I have the same problem. My config:
Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller Ubuntu 14.04.4 LTS Kernel 4.2.0-34-generic #39~14.04.1-Ubuntu
I have the same problem. My config:
Intel(R) Core(TM) i5-3470 CPU @ 3.20GHz
Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller
Ubuntu 14.04.4 LTS
Kernel 4.2.0-34-generic #39~14.04.1-Ubuntu