$ edid-decode /sys/class/drm/card0-HDMI-A-1/edid EDID of '/sys/class/drm/card0-HDMI-A-1/edid' was empty.
$ edid-decode /sys/class/ drm/card0- HDMI-A- 1/edid drm/card0- HDMI-A- 1/edid' was empty.
EDID of '/sys/class/