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[Success] Radeon RX 6800 XT - Big Sur

Joined
Apr 24, 2021
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Gigabyte Z390 Aorus Pro
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i9-9900K (5.1GHz)
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RX 6900XT
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Thanks!
I will wait for .4 final which is probably a couple of weeks from now. Was just curious if anyone has tried 6900XT already, since it's in the official documents for support already.
I have the reference 6900XT as well (Asus model to be specific).

Can confirm HDMI and DP are working just fine, haven't tried the USB-C connection as I don't have an adapter.
I'm waiting on my water block from corsair to arrive, but so far, haven't had any issues with the unit under the beta.
 

Gigamaxx

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I have the reference 6900XT as well (Asus model to be specific).

Can confirm HDMI and DP are working just fine, haven't tried the USB-C connection as I don't have an adapter.
I'm waiting on my water block from corsair to arrive, but so far, haven't had any issues with the unit under the beta.
USB- c works well.
 
Joined
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Gigabyte TRX40 Aorus Xtreme
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Ryzen 3970X
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RX 6900 XT
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Thanks!
I will wait for .4 final which is probably a couple of weeks from now. Was just curious if anyone has tried 6900XT already, since it's in the official documents for support already.

Well the Release Candidate is out now so you won't have long to wait.
 

CaseySJ

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Well the Release Candidate is out now so you won't have long to wait.
The RC build has been publicly released already. No support yet for Navi 22 (RX 6700 XT) -- might (or might not) happen in 11.5.

Screen Shot 2021-05-17 at 2.20.34 PM.png
 
Last edited:
Joined
Oct 15, 2013
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123
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ASUS PRIME X299-A
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i9-7960X
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RX 6900 XT
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11 seconds, it's very fast :)
tested with Octane X and chess file
Screenshot 2021-05-17 at 23.00.57.png
 
Joined
Jun 15, 2012
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Motherboard
Gigabyte Z370 AORUS Gaming 7-F13
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i7-8700K OC @ 5.1Ghz
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RX 6900 XT
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  1. Performa
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  1. iOS
The RC build been publicly released already. No support yet for Navi 22 (RX 6700 XT) -- might (or might not) happen in 11.5.

View attachment 518893
Nothing like owning a 2,500 dollar paperweight :(. I feel like not supporting all 6900XTs is even more glaring than 6700 because I literally bought the card on the advertising. update notes said 6900XT not "some 6900XT", they didn't say 6700 :(
 

Gigamaxx

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Do you use also usb c as a usb hub? I have a 6800 reference and usb c only works for video output :(
No just USB-c to HDMI adapter but it has video and audio. Someone earlier mentioned connecting their phone to iit and getting handoff working.
 
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> Need model #/version # > See Rules!
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No support yet for Navi 22 (RX 6700 XT) -- might (or might not) happen in 11.5.
Thanks for letting us know,may need to put the notice somewhere visible as im sure there are going to be posts asking about this.
 
Joined
May 11, 2011
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Gigabyte B550 Vision D
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Ryzen 5900X
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RX 6800
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I want to confirm I'd managed to finally boot into Big Sur 11.4 using the RX6800, but with the assistance of a RX550 as boot and display GPU in slot-1 spoofed to device-id 67FF. This was the result from GB4 & GB5:
Screenshot 2021-05-17 at 6.57.46 PM 2.png
Screenshot 2021-05-17 at 7.19.36 PM 2.png

The PCI path for RX6800 however is convoluted (sitting on a PCI bridge, haven't figured the correct ACPI path out yet), and I couldn't boot with it at all using Lilu, WEG or agdpmod=pikera. But GLView and GB4 & GB5 detects the card.
 
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