Comment # 16 on bug 1089116 from Bit Juggler

(In reply to Stefan Dirsch from comment #15)
> (In reply to Stefan Dirsch from comment #12)
> > Ok. So the segfault is fixed with these patches. Remains that bumblebee
> > doesn't work. I suggest to add the patches to our Xserver and reassign this
> > ticket to the bugowners/maintainers of Bumblebee.
> 
> done. ;-)

Well, there are still lots of errors in the Xorg.0.log:

one
[   567.532] (EE) [drm] Failed to open DRM device for pci:0000:01:00.0: -19

many
[   567.737] (EE) FBDEV(0): FBIOPUTCMAP: Device or resource busy

one
[   567.744] (EE) AIGLX: reverting to software rendering

and

systemctl status bumblebeed

lists NO errors!