Comment 3 for bug 1833427

This bug continues to be present in focal, with no effect from updated kernel. It constantly cycles with xrandr repeatedly emitting that the configuration has changed when monitors go to power saving mode, causing wake-up. This cycle eventually crashes the kde lockscreen (probably a separate bug), requiring dropping to console to unlock the session with loginctl.

Reproduce: $ xset dpms force standby
Result: Monitors go to sleep and wake up within a few seconds.

Kernel: 5.11.0-27-generic x86_64 bits: 64 compiler: N/A Desktop: KDE Plasma 5.18.7 tk: Qt 5.12.8
wm: kwin_x11 dm: LightDM 1.30.0 Distro: Linux Mint 20.2 Uma base: Ubuntu 20.04 focal

Graphics: Device-1: Advanced Micro Devices [AMD/ATI] vendor: Tul driver: amdgpu v: kernel bus ID: 2d:00.0 chip ID: 1002:73ff
           Display: x11 server: X.Org 1.20.11 driver: amdgpu,ati unloaded: fbdev,modesetting,radeon,vesa compositor: kwin_x11
           resolution: 1920x1080~60Hz, 1920x1080~60Hz
           OpenGL: renderer: AMD DIMGREY_CAVEFISH (DRM 3.40.0 5.11.0-27-generic LLVM 12.0.1)