Hector Martin

Current verdict on Linux on the 2015 Retina iMac 27": - Everything is tiny - amdgpu does not work but radeon does - BT needs a USB reset to work - No audio yet - TB2 works - Desktop is smooth - Even radeon is way better than the Ivy Bridge Intel crap I've been living with for 8y

Seriously, it feels like a new computer just because the GPU and, more importantly, the drivers aren't garbage. This is the first time I've had tearing-free (composited!) video on my main workstation in half a decade. Intel used to be good but they really dropped the ball.

I'm not moved over yet, this is a test booting my existing OS off of USB, but this will likely become my primary workstation in the coming weeks, after I get around to upgrading its internal storage and CPU.

I just realized 5K isn't actually showing up as an option for display output, but just 4K max?

Apple used a pre-release displayport standard and display controller. It has no support outside MacOS. The thing will be stuck at 4K unless you figure it out ;)