Created attachment 141462 [details]
dmesg from kernel 4.18.6 with patch 141163

same with kernel 4.18.6 + patch
adding amdgpu.dc_log=1 ...

(all kernel param used: amdgpu.cik_support=1 radeon.cik_support=0 amdgpu.dpm=1
amdgpu.dc=1 amdgpu.dc_log=1 drm.debug=0x4 )