https://bugzilla.kernel.org/show_bug.cgi?id=201497
Elliot Thomas (e.singularitycat@gmail.com) changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |e.singularitycat@gmail.com
--- Comment #7 from Elliot Thomas (e.singularitycat@gmail.com) --- Same here, RX580 and an ASUS PG278Q monitor, also with G-Sync support. A different DisplayPort monitor (without G-Sync) worked perfectly.
I've noticed someone else with the same monitor having this issue over on the freedesktop bug tracker: https://bugs.freedesktop.org/show_bug.cgi?id=108806
Interestingly, in more recent kernels, the affected monitor appears to flash rapidly. I still see the EDID read fail in this case. I'll try and grab a dmesg of this at some point.