debian:/var/log# cat Xorg.1.log | grep EE
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(II) Loading extension MIT-SCREEN-SAVER
(EE) [drm] Could not set DRM device bus ID.
(EE) intel(0): [dri] DRIScreenInit failed. Disabling DRI.
(EE) xf86OpenSerial: Cannot open device /dev/input/mice
(EE) Configured Mouse: cannot open input device
(EE) PreInit failed for input device "Configured Mouse"