The EDID is being read, but the CRC is invalid (reported as "err-crc"). That would be a fault of the monitor.
Run "edid-decode -C /sys/class/drm/card1-HDMI-A-1/edid" to do a conformance check on the EDID and it should report the same thing, and tell you what the EDID should be. Post the output here if you want any analysis.
You could copy /sys/class/drm/card1-HDMI-A-1/edid, fixup the CRC, put it in /lib/firmware as eg asusedid.bin, and then add "drm.edid_filename=HDMI-A-1:asusedid.bin" to /boot/firmware/cmdline.txt to load the edited version instead.
Run "edid-decode -C /sys/class/drm/card1-HDMI-A-1/edid" to do a conformance check on the EDID and it should report the same thing, and tell you what the EDID should be. Post the output here if you want any analysis.
You could copy /sys/class/drm/card1-HDMI-A-1/edid, fixup the CRC, put it in /lib/firmware as eg asusedid.bin, and then add "drm.edid_filename=HDMI-A-1:asusedid.bin" to /boot/firmware/cmdline.txt to load the edited version instead.
Statistics: Posted by 6by9 — Tue Jan 13, 2026 6:09 pm