Ubuntu
gdm3 package

  1. Bug #1706474
  2. Comment #14

Comment 14 for bug 1706474

Revision history for this message
Tim Richardson (tim-richardson) wrote : Re: gdm3 nvidia modeset=1 is broken, external screens don't work

Sorry, that was premature. I had not enabled modeset=1 properly.
After doing that
a) in Optimus mode, only the laptop display works. The nvidia settings control panel opens, but it detects no screens.
b) in discrete nvidia BIOS mode, gdm is stuck in a greeter loop when trying to start a Gmome or Gnome classic session
c) in discrete Nvidia BIOS mode, Wayland is a session option, and it works.

So this is still a bug: 17.10 Ubuntu is still broken for Optimus users who want tear-free graphics.