Comment 73 for bug 1492764

I have tried With Xenial 16.04 Linux Kernel 4.3 and The issue is still there. Now Something Interesting.

I have a Lenovo z50-70 Laptop with Hybrid Graphics. So II have to use Bumblebee for getting proper use of the Nvidia Card on the Laptop.

I have to first use nomodeset kernel parameter to even boot up.

Then Once In install bumblebee and things look great. However the moment I use bumblebee for Launching any application, Something changes, Not sure what. and next reboot produces this black screen and the Intern DRM messages.

I remove bumblebee nvidia etc.... nothing helps. I keep getting this black screen.

So Things work great if I don't use bumblebee at all, I can reboot system etc... No worries, However the system breaks with the first reboot after using Bumblebee to launch any app for the first time. Even if I ran glxinfo | grep OpenGL with primusrun or Optirun. Things no longer stay the same. The session carries on fine, However the moment I reboot the machine/Restart X.

Things are black.

I think there is a regression somewhere with Bumblebee breaking the Intel OpenSource Driver. Or maybe Nvidia -Closed Source Driver breaking Intel Driver... Honestly I can't figure it out.

I hope this helps in understanding the behaviour of the problem.