Ubuntu
gdm3 package

  1. Bug #1798790
  2. Comment #19

Comment 19 for bug 1798790

Revision history for this message
Daniel van Vugt (vanvugt) wrote : Re: Ubuntu 18.10 login screen never appears when using the Nvidia driver

Thanks. I think I can see the problem now.

The first thing that happens is that gdm3 tries to start a Wayland login screen ('gnome-shell' process) and fails because the Nvidia driver doesn't support KMS:

Oct 23 11:59:14 efthimios-GA-78LMT-USB3 gnome-shell[1688]: meta_kms_resources_init failed: Calling drmModeGetResources() failed, assuming we have no outputs
Oct 23 11:59:14 efthimios-GA-78LMT-USB3 gnome-shell[1688]: Failed to create backend: No GPUs with outputs found

That is not a bug. What it should do next (and does on my machine) is then try again to start the login screen using X instead. However I can't see that in your log. You might have something odd installed or preventing the fallback from working.

Please:

1. Report the bug to the gdm developers here:

   https://gitlab.gnome.org/GNOME/gdm/issues

   and then tell us the new bug ID.

2. Try this as a workaround: edit /etc/gdm3/custom.conf and uncomment the line:

   #WaylandEnable=false