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by PaulDavisThe1st 1029 days ago
I have two identical ASUS 1920x1200 monitors. The EDID on one of them got corrupted.

Dumped the EDID from the other monitor, put in a file in /usr/lib/firmware/edid, and added this to the grub command:

   drm.edid_firmware=DVI-D-2:edid/asus-1920x1200.bin
DVI-D-2 is the moniker for the broken monitor.

Long Live Linux!