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I use both 7900x and 7900xtx on Kubuntu 22.10, I knew what I was getting into and what was required of me to get it working before getting the hardware so it wasn't really a huge issue for me. For kernel I simply use xanmod (https://xanmod.org), for mesa I use oibaf (https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers), there are alternatives to both, but these are the ones I prefer. You might also need to find a newer source for firmware, at the time I got my hardware no package was available that was updated yet, but I simply fetch the firmwares from the linux-firmware git and copied it into the right folder: git clone https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git cd linux-firmware/amdgpu/ sudo cp * /lib/firmware/amdgpu/
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SaaSHub
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Have a look at this if you want to get an idea of the scope of changes like that. Notice that it's not even merged yet, let alone gone through our various steps of QA. And at Nixpkgs even have the luxury of being able to have an arbitrary amount of compilers installed at the same time, other distros need to accept possible regressions everywhere when they update LLVM. Bumping LLVM isn't a thing distros usually strive to do often and HW support is pretty much the only good reason I can think of to do it in a timely manner at all.