DisplayPort stays off after powersave with kernal 6.1.1 and 6.1.2 amdgpu

[xerol]

Power off / on the external monitor keeps display black with recent kernels. Up to kernel 6.0.13 the monitor came up again.

When running

Code Select Expand

ddcutil detect

(using a second monitor on HDMI), both monitors are detected.

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inxi -G
Graphics:
  Device-1: AMD Cezanne [Radeon Vega Series / Radeon Mobile Series]
    driver: amdgpu v: kernel
  Display: x11 server: X.Org v: 1.21.1.5 driver: X: loaded: amdgpu
    unloaded: fbdev,modesetting,vesa dri: radeonsi gpu: amdgpu resolution:
    1: 1920x1200~60Hz 2: 1920x1200~60Hz
  API: OpenGL v: 4.6 Mesa 22.3.1 renderer: AMD Radeon Graphics (renoir LLVM
    15.0.6 DRM 3.49 6.1.2-1-siduction-amd64)


It does not matter if running in X or on console.

Currently I need to reboot to get the video back on the DP output ( I tried to unload / reload the amdgpu module but it is in use)

Any suggestions ?