Hello :-)

I'm doing the same activate and then adding DRI_PRIME=1 in front of wine game's command line, but it isn't working as before. Running Anarchy, latest linux kernel 5.6.3, bios 314 (may need update; am going to check now). Had installed the latest kernel as I'd read that the main GPU's bottle-necking would be fixed in this kernel, but I can't even get the main (RX560) GPU to activate.

Have been reading round, and found that xf86-video-amdgpu needed installing, as did amd-ucode. Reboots have made no difference.

xrandr --listproviders shows 2 providers, but systemctl --state=active | grep radeon shows no text output.

The Vega will run small games really well, but anything larger has a lot of large white patches flickering. Not sure if there are further things that I should install, or if the kernel has a bug/bottle-necking a work in progress still. Would be very grateful for advice.

Thank you

EDIT: have found this thread, which is suggesting xorg isn't loading the GPU ...
https://bbs.archlinux.org/viewtopic.php?id=254475
... and to use a different kernel. Not understanding everything on the thread, and not sure if using pamac to install the linux-amd-staging-drm-next-git kernel, then removing the linux kernel/headers might mess things up. Maybe better to wait for the xorg fix, if that is what is wrong.

There is a BusID line in the Device section of the xorg.conf. If you can figure out seperate BusID for each gpu you can try to use it to make the 560X gpu drive your screen. First make sure you can boot your laptop from a usb pendrive and write from the usb os to your laptop hard drive, and then if your experimental xorg.conf fouls something up you can rescue by deleting the xorg.conf file. Fooling around with that idea for an hour might yield a solution and if not maybe someone more knowledgeable than me on this forum can give you another idea.

Hello biker_rat and thank you very much for your response. Sorry I'm not very tech, but do appreciate suggestions. I know I'm more or less certain to goof up, lol. Can grasp the basics and do straightforward maintenance, but have had quite a few reinstalls over the last 2-3 years from going anywhere near more complex stuff.

I'm wondering if others have found the same issue, if it is actually a kernel/xorg bug. If fixes to free up the GPU are happening, not even able to activate it, lol, would seem a big regression,eek, so hopefully things start progressing.