I had an admittedly very old ATI card that I was using in my Linux box while saving my pennies for a newer Nvidia card. I had to give up on it and use an equally old iMac (2008-ish) because the ATI card was locking up my desktop with ring 0 errors nightly (if I ran something that required the 3D hardware, 2D was fine), and no amount of searching could find the solution. That put me off an AMD GPU. I would love to support something else in the ecosystem, but sadly I just don't have the dollars to waste on new hardware that may not work.