[Bug 109150] "failed to set DRM interface version 1.4: Permission denied" after resume for lock screen.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109150

            Bug ID: 109150
           Summary: "failed to set DRM interface version 1.4: Permission
                    denied" after resume for lock screen.
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: libdrm
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: nanericwang at gmail.com

Created attachment 142890
  --> https://bugs.freedesktop.org/attachment.cgi?id=142890&action=edit
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?

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