This recently happened to me with linux-image-4.15.0-34-generic see bug #1792213
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1766974 Title: /dev/dri/card0 Status in xorg package in Ubuntu: Confirmed Bug description: There are very many bugs reported recently against xorg with a commmon theme the following are just 2 examples from the various xorg logs (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied (EE) intel(0): [drm] failed to set drm interface version: Permission denied [13]. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1766974/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
