Let me know how it went for you because it looks 9070 series is not supported out of the box on launch day...If you like, I can write you a few lines on the PowerColor Reaper soon, but on Linux.
Sorry, guys.![]()
It is supported but you need to install Mesa 25.0, (nearly) latest linux-firmware on Arch (at least kernel is good on Arch).
Today I will need to see after work if the "official" package bumped for Mesa or I really need to swap to mesa-git.
Which is doable but I was not expecting to spend time on it. I just wanted to play yesterday night. And it was quicker to put my GRE back to the machine and fire it up

But weekend will come and either
A) arch will push the needed packages
B) I will spend some time to make the switch
C) put the A770 back to my son's PC and call it a day

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