"failed to set DRM interface version 1.4: Permission denied" after resume for lock screen.

Submitted by nan..@..il.com

Assigned to Default DRI bug account

Created attachment 142890 Xorg log before lock screen.

Everytime after resume from a lock screen (monitor suspend), I see the following error from xorg log:

[ 20.962] (II) xfree86: Adding drm device (/dev/dri/card0) [ 20.962] (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied

There is no such errors at first boot (before lock screen).

My question:

How to know what is trying to access "/dev/dri/card0"? Where is the log?
Why it is trying to access "/dev/dri/card0", given that the xorg is started already?

Attachment 142890, "Xorg log before lock screen.":
Xorg.0.log

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