CaseySJ
Moderator
- Joined
- Nov 11, 2018
- Messages
- 22,040
- Motherboard
- Asus ProArt Z690-Creator
- CPU
- i7-12700K
- Graphics
- RX 6800 XT
- Mac
- Classic Mac
- Mobile Phone
Couple of suggestions:@CaseySJ Regarding my 6800 XT not displaying any video signal between boot up and macos being loaded, I connected my 6800 XT to the monitor via a DP to HDMI cable. DP connected on the 6800 XT and HDMI on the monitor. With this configuration, I have a video signal during post. But DP to DP no signal during post. I updated the BIOS to F20 and it is the same issue; video signal all the way if I use DP to HDMI cable but no video signal until macos loads if I use DP to DP cable. I am starting to thing something might be wrong with my monitor and this card. The monitor is a bit old and only compatible to DP V1.2 whereas the 6800 XT is DP V1.4a (although I would assume backward compatibility).
- If your monitor has an option to switch between DP 1.1 and DP 1.2, set it to DP 1.1 (yes 1.1).
- With DP-to-DP cable, try enabling CSM Support in BIOS.