[Success] Radeon RX 6800 XT - Big Sur

[goldorac]

Hello everyone,

For me I get a black screen under DP or HDMI with my Sapphire RX 6800 XT OC with to without WE :/
Tried to disable the iGPU of my 9900K and injections bu nothing.

 

[CrashMidnick]

Thread name should be changed from failed to success
Good news.

 

[Andy1983]

Hello everyone,

For me I get a black screen under DP or HDMI with my Sapphire RX 6800 XT OC with to without WE :/
Tried to disable the iGPU of my 9900K and injections bu nothing.

Try unplugging and plugging back in the HDMI cable in the card when on the black screen, Used to work on my rx580 so worth a shot.

 

[ARES777]

Hello everyone,

For me I get a black screen under DP or HDMI with my Sapphire RX 6800 XT OC with to without WE :/
Tried to disable the iGPU of my 9900K and injections bu nothing.

Same here on Gigabyte 6800XT. Playing with hdmi dp, not working, no monitor detected

 

[switt]

Thread name should be changed from failed to success
Good news.

Not just good... Great news!

 

[Gigamaxx]

Same here on Gigabyte 6800XT. Playing with hdmi dp, not working, no monitor detected

boot arg. agdpmod=pikera

 

[goldorac]

Just disabled WE and switched to MacPro7.1, working without problem now.

 

[ARES777]

Just disabled WE and switched to MacPro7.1, working without problem now.

Changed System to 7,1 also here, now works.

 

[TexTokyo]

Changed System to 7,1 also here, now works.

Are either you or @goldorac running a multi-monitor setup? If so, is it stable?

 

[ARES777]

Are either you or @goldorac running a multi-monitor setup? If so, is it stable?

I have 2 monitors Gigabyte 27", 2K, works flawless, on 144 Hz. Is stable for me with 7,1 definition, no WE enabled, and pikera as boot arg. Both monitors on DP port, since the HDMI I use for a 21" graphic display drawing tablet ( Gaomon Pd2200 works also fine is seen as 3rd screen)