Comment # 7 on bug 92258 from polo

I have similiar problem on zbook 14 using open driver and DRI_PRIME=1
3.16.7  openSUSE 13.2  work  without any problem
Fedora 21 after  update from 3.18 to 3.19    randomly crash using DRI_PRIME=1
4.1.12  openSUSE Leap 42.1  the same issue.