Isn't it a greater question to ask where to buy one? The reason I don't have a 6800 XT is because it was easier to get my hands on a PS5!

I manage to grab one from Computeruniverse

PowerColor Radeon RX 6900XT Red Devil Product number 90824551 Available from stock. Reserved for you.

And that was the last one ... no more available...

I also had a 1080Ti and now rock a Red Devil 6900XT. I guess we hate money or something...

It's a bloody whopper of a card, better make sure it fits beforehand! This mofo sure didn't leave much room to spare in my old case. You'll also need a beefy PSU, I wouldn't feel good with anything under 850W. Got a 1K unit here and haven't seen any issues, using all three power connectors on separate cables.

Linux support isn't perfect really, adjusting voltages/fans/clocks etc is said to improve with kernel 5.12. Nevertheless, it works great and runs hella fast. Gets a bit warm in my case as the airflow isn't optimized for this huge card that generates quite a lot of heat and dumps it right into the case air. It's below 60 C idle so the fans don't spin at all then.

FWIW, I run Siduction with Mesa git.

Good luck, I'm also waiting to buy a new AMD card. It's currently impossible due to severe shortages everywhere.

Last edited by Shmerl on 15 February 2021 at 9:51 pm UTC

Can't comment on 6900XT but I've recently sold my RTX 2060S in favor of an RX 6800 non-xt. Couldn't be happier with the choice, card is very stable and performance is great. Welcome to the red family!

Running Kernel 5.11 and Mesa 21.0.0rc4

Hi again and thanks for the feeback , it really helped.

I just got the 6900 XT on Friday so I had time to play during the weekend.
This card is really a beast...

The only problem I have is that I use 4 monitors and when monitors go on standby - some of them dont wake up and sometimes it messes the KDE UI since one monitor is not waking up.
if I reeboot is ok , sometimes with arandr I may fix it but is very annoying.
Anyone has a solution for this ??

Thanking you in advance ..

Heh, congrats! I still can't find Sapphire Pulse RX 6800 XT anywhere.

amdgpu had some wake up bugs recently. Fixed in 5.11.3 and on.

Last edited by Shmerl on 7 March 2021 at 11:49 pm UTC

Quoting: wolfyrionHi again and thanks for the feeback , it really helped.

I just got the 6900 XT on Friday so I had time to play during the weekend.
This card is really a beast...

The only problem I have is that I use 4 monitors and when monitors go on standby - some of them dont wake up and sometimes it messes the KDE UI since one monitor is not waking up.
if I reeboot is ok , sometimes with arandr I may fix it but is very annoying.
Anyone has a solution for this ??

Thanking you in advance ..

Check if this happens with a 5.10 series kernel if you're on 5.11. I saw a similar problem with my 5700XT and going back to 5.10 fixes it.

EDIT: Oh, looks like it might be fixed in 5.11.3 already, so if you're on that, nevermind. I'll upgrade later today and give it a whirl myself.

EDIT2: 5.11.4 works just fine, so you're probably hitting something else. Assuming your kernel is up to date. But I suppose it's something to do with power management in any case.

Last edited by tuubi on 8 March 2021 at 9:16 am UTC

I have tested every kernel but still no solution

Quoting: wolfyrionI have tested every kernel but still no solution

If arandr does the trick, you may want to create an script with xrandr and add a keyboard shortcut on your DE. I recall using this as a workaround with three monitors in a lenovo dock and it worked flawlessly (I remember that the workaround was to switch to one monitor and back to three - one script + shortcut for each action)