Created attachment 141239 [details]
dmesg output of kernel 4.18.4

Regular test of the card's working status, this time probably including some
more interesting bits (a few excerpts):

10.138008] [drm] dce110_link_encoder_construct: Failed to get encoder_cap_info
from VBIOS with error code 4!
[   18.912142] [drm:amdgpu_uvd_ring_test_ib [amdgpu]] *ERROR* amdgpu: (0)IB
test timed out.
[   18.932321] [drm:amdgpu_ib_ring_tests [amdgpu]] *ERROR* amdgpu: failed
testing IB on ring 12 (-110).