https://bugzilla.kernel.org/show_bug.cgi?id=194761
--- Comment #40 from Marek Olšák (maraeo@gmail.com) --- (In reply to siyia from comment #39)
After kernel 4.11.4 2d apps and videos work perfectly with amdgpu and r7 240,however any game either with opengl or vulkan,native or with wine gets the chessboard effect artifacts.
Can you test the second possible fix and if it doesn't help, can you test both of them?