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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1706474 Title: gdm3 nvidia modeset=1 is broken, external screens don't work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1706474/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs