When changing the resolution on my iMac 5k late 2015, I am experiencing an artifact. Horizontal lines appear all over the screen. This happens for all resolutions under the maximum.
This happens on all Linux distros including both common display servers xorg and wayland.
I know that the...
$ lspci -nn | grep VGA
And it returns:
00:01.0 VGA compatible controller : Advanced Micro Devices, Inc. [AMD/ATI] Stoney [Radeon R2/R3/R4/R5 Graphics] [1002:98e4] (rev d4)
What is the proper driver and how do I install it?