https://bugs.freedesktop.org/show_bug.cgi?id=106303
--- Comment #6 from Julian <jsban...@gmail.com> ---
Can confirm. I'm using a Rx 560 on kernel 4.16 and my clock rate is stuck on
1230MHz permanently.
I'm also using a single 2560x1440x144 monitor
This is directly related to DC. If I run with amdgpu.dc=0 the issue disappears.
If I run with amdgpu.dc=1 it shows up. I can't say if it also happened on 4.15
or earlier.
I did notice that dmesg shows about a dozen powerplay errors:
[ 94.582083] amdgpu: [powerplay]
failed to send message 146 ret is 255
[ 94.582091] amdgpu: [powerplay]
failed to send pre message 147 ret is 255
[ 95.895976] amdgpu: [powerplay]
failed to send message 145 ret is 255
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