`Failed to set DPMS: Failed to set connector 61 property 2: Permission denied`
On an Acer TravelMate 5735Z with Debian Sid/unstable and GNOME Shell 3.36.3, the warning below is in the journal.
gnome-shell[2235]: Failed to set DPMS: Failed to set connector 61 property 2: Keine Berechtigung
What permissions need to be fixed?
PS: Without DRM debug output at hand, how do I find out, what connector 61 is?
$ fdfind edid /sys/devices
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1/edid
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-2/edid
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-1/edid
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/edid
/sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-VGA-1/edid