[Bug 1833427] Re: Continuous XRandROutput updates once screen is suspended by energy saving

[Victoid]

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)

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https://bugs.launchpad.net/bugs/1833427

Title:
  Continuous XRandROutput updates once screen is suspended by energy
  saving

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