[Bug 102646] Screen flickering under amdgpu-experimental [buggy auto power profile]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102646

magist3r <magist3r at gmail.com> changed:

           What    |Removed                     |Added
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 Attachment #144237|0                           |1
        is obsolete|                            |

--- Comment #91 from magist3r <magist3r at gmail.com> ---
Created attachment 144253
  --> https://bugs.freedesktop.org/attachment.cgi?id=144253&action=edit
fixed patch

I fixed the patch and can apply it on top of amd-drm-next and vanilla kernel
5.0.11 (my current kernel). Unfortunately it doesn't help. I added 'verbose
debug' patch too, here is my output.

1) Before applying high memory profile workaround:
 kernel: amdgpu: [powerplay] min_core_set_clock: 30000
 kernel: amdgpu: [powerplay] min_mem_set_clock: 30000
 kernel: amdgpu: [powerplay] vrefresh: 75
 kernel: amdgpu: [powerplay] min_vblank_time: 464
 kernel: amdgpu: [powerplay] num_display: 2
 kernel: amdgpu: [powerplay] multi_monitor_in_sync: 0
 kernel: amdgpu: [powerplay] performance level 0 memory clock = 30000
 kernel: amdgpu: [powerplay] performance level 0 engine clock = 30000
 kernel: amdgpu: [powerplay] performance level 1 memory clock = 200000
 kernel: amdgpu: [powerplay] performance level 1 engine clock = 136600
 kernel: amdgpu: [powerplay] mclk_latency_table entry0 frequency = 30000
 kernel: amdgpu: [powerplay] mclk_latency_table entry0 latency = 330
 kernel: amdgpu: [powerplay] mclk_latency_table entry1 frequency = 100000
 kernel: amdgpu: [powerplay] mclk_latency_table entry1 latency = 330
 kernel: amdgpu: [powerplay] mclk_latency_table entry2 frequency = 200000
 kernel: amdgpu: [powerplay] mclk_latency_table entry2 latency = 330

2) After:
kernel: amdgpu: [powerplay] min_core_set_clock: 30000
kernel: amdgpu: [powerplay] min_mem_set_clock: 30000
kernel: amdgpu: [powerplay] vrefresh: 75
kernel: amdgpu: [powerplay] min_vblank_time: 464
kernel: amdgpu: [powerplay] num_display: 2
kernel: amdgpu: [powerplay] multi_monitor_in_sync: 0
kernel: amdgpu: [powerplay] performance level 0 memory clock = 200000
kernel: amdgpu: [powerplay] performance level 0 engine clock = 30000
kernel: amdgpu: [powerplay] performance level 1 memory clock = 200000
kernel: amdgpu: [powerplay] performance level 1 engine clock = 136600
kernel: amdgpu: [powerplay] mclk_latency_table entry0 frequency = 30000
kernel: amdgpu: [powerplay] mclk_latency_table entry0 latency = 330
kernel: amdgpu: [powerplay] mclk_latency_table entry1 frequency = 100000
kernel: amdgpu: [powerplay] mclk_latency_table entry1 latency = 330
kernel: amdgpu: [powerplay] mclk_latency_table entry2 frequency = 200000
kernel: amdgpu: [powerplay] mclk_latency_table entry2 latency = 330

My GPU is RX580 8Gb with 2 monitors connected through HDMI.

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