how do I check if linux can see and use my discrete graphics card?
@lizardsquid Make a live usb?
@gemlog I'm not sure how that helps?
@gemlog ok so I've found the problem: everything's installed correctly, but Xorg is using the integrated graphics drviers. How do I set it to use the amd ones instead?
@lizardsquid Depending on your linux distro, you may be able to find a 'driver manager' in your main menu.
Otherwise, the old-school way is to edit a file in /etc. I haven't had to do that for yonks though.
@gemlog I don't have any kind of menus, I'm running a bare window manager with no desktop environment
I'll see if I can find something, though
@lizardsquid There's no rule against having e.g. 5 different DE's installed at once. If you are resource-constrained, you could run one temporarily just to use the easy gui :-)
Anyhow, I'm sure you are on the right track. Bon chance! I have to go to work now.
@lizardsquid Oh! That's an important bit of information :-) I thought you were contemplating running linux.
https://askubuntu.com/questions/28033/how-to-check-the-information-of-current-installed-video-drivers
and check performance:
https://www.howtoforge.com/tutorial/linux-gpu-benchmark/