josh256 Posted May 11, 2020 Share Posted May 11, 2020 Anyone experienced issues with 3540x1440 ultra wide on Vega 56/64? Details: I have a fresh Catalina 10.15.4 system presently using an MSI Vega 56. Working fine with multiple 4K displays but attempting to connect to my AOC Agon 35" Ultrawide results in a black screen on HDMI (System OK and can switch back to another display okay) and on DisplayPort a bunch of flashing on/off (with a white/yellowish square in the centre) and the Vega goes offline. Working 4K monitors on HDMI go offline at the same time. Both Iriri and Kamarang framebuffers behave the same with latest Lilu/WhateverGreen. No GPU Bios/EFI firmware modifications. It works with my Kepler cards (GTX 780, GT 740 OC over HDMI for certain). Cheers, JK Link to comment Share on other sites More sharing options...
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