Ubuntu
gdm3 package

  1. Bug #1716857
  2. Comment #26

Comment 26 for bug 1716857

Revision history for this message
Jeremy Soller (jackpot51) wrote : Re: gdm3, hybrid nvidia with modeset=1, no external monitors detected

The solution to this is to run X11 as root, so it can use VGA arbiter and detect displays on both the NVIDIA and modesetting drivers.

Add this to /etc/X11/Xwrapper.config :
needs_root_rights = yes