https://bugs.freedesktop.org/show_bug.cgi?id=88364
--- Comment #4 from Liss lissamour@gmail.com --- (In reply to Michel Dänzer from comment #3)
(In reply to Liss from comment #2)
If I restart notebook and try to run something again I'll get black window (Xorg will continue to work)
Note that DRI_PRIME currently requires a compositing manager for the contents to be visible.
I'm using Mutter as WM, so there shouldn't be any problems with compositing.