Adaptive Sync preference resetting on system reboot

I was having an issue the other day, where games opening would kill my monitor signal when using Plasma Wayland.I managed to solve this by changing my Adaptive Sync setting (found under Display Settings) to Never - from Automatic. This does solve the issue however;

restarting my computer or power cycling the monitor reverts this setting to Automatic, which causes the issues with playing games to return. I have found a few mentions of similar issues on the internet, however they are all old and outdated, and the suggested solutions did not work for me (kscreen is installed etc). Most of the issues also seemed to be Xorg specific, whereas this is definitely on Wayland.

Would anyone have any tips on how I could try to resolve this? Currently I just have to open display settings and change the adaptive sync setting every time I turn my PC on, which is copable but annoying.

Obligatory system specs:

  Host: humboldt Kernel: 5.16.14-1-MANJARO x86_64 bits: 64
    Desktop: KDE Plasma 5.24.3 Distro: Manjaro Linux
  Type: Desktop Mobo: ASRock model: B450M Steel Legend
    serial: <superuser required> UEFI: American Megatrends v: P3.60
    date: 11/03/2020
  Info: 12-core model: AMD Ryzen 9 5900X bits: 64 type: MT MCP cache:
    L2: 6 MiB
  Speed (MHz): avg: 2474 min/max: 2200/4950 cores: 1: 3596 2: 2052 3: 2057
    4: 2058 5: 3596 6: 2052 7: 3572 8: 2057 9: 2060 10: 2052 11: 2084 12: 2061
    13: 3597 14: 2052 15: 2057 16: 2051 17: 3601 18: 2057 19: 3543 20: 2056
    21: 2053 22: 2137 23: 2057 24: 2837
  Device-1: AMD Navi 23 [Radeon RX 6600/6600 XT/6600M] driver: amdgpu
    v: kernel
  Device-2: Logitech Webcam C270 type: USB driver: snd-usb-audio,uvcvideo
  Display: wayland server: v: with: Xwayland v: 22.1.0
    compositor: kwin_wayland driver: X: loaded: amdgpu,ati
    unloaded: modesetting,radeon gpu: amdgpu resolution: 2560x1440
  OpenGL: renderer: AMD Radeon RX 6600 XT (DIMGREY_CAVEFISH DRM 3.44.0
    5.16.14-1-MANJARO LLVM 13.0.1)
    v: 4.6 Mesa 21.3.7
  Device-1: AMD Navi 21 HDMI Audio [Radeon RX 6800/6800 XT / 6900 XT]
    driver: snd_hda_intel
  Device-2: AMD Starship/Matisse HD Audio driver: snd_hda_intel
  Device-3: Logitech Webcam C270 type: USB driver: snd-usb-audio,uvcvideo
  Sound Server-1: ALSA v: k5.16.14-1-MANJARO running: yes
  Sound Server-2: PipeWire v: 0.3.48 running: yes
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    driver: r8169
  IF: enp4s0 state: up speed: 1000 Mbps duplex: full mac: censored
  IF-ID-1: outline-tun0 state: down mac: N/A
  IF-ID-2: virbr0 state: down mac: censored
  IF-ID-3: vmnet1 state: unknown speed: N/A duplex: N/A
    mac: 00:50:56:c0:00:01
  IF-ID-4: vmnet8 state: unknown speed: N/A duplex: N/A
    mac: 00:50:56:c0:00:08
  Local Storage: total: 1.36 TiB used: 907.5 GiB (64.9%)
  ID-1: /dev/sda vendor: Crucial model: CT500MX500SSD1 size: 465.76 GiB
  ID-2: /dev/sdb vendor: Toshiba model: HDWD110 size: 931.51 GiB
  ID-1: / size: 457.09 GiB used: 350.31 GiB (76.6%) fs: ext4 dev: /dev/sda2
  ID-2: /boot/efi size: 299.4 MiB used: 288 KiB (0.1%) fs: vfat
    dev: /dev/sda1
  Alert: No swap data was found.
  System Temperatures: cpu: N/A mobo: N/A gpu: amdgpu temp: 57.0 C
  Fan Speeds (RPM): N/A gpu: amdgpu fan: 0
  Processes: 446 Uptime: 12m Memory: 31.27 GiB used: 3.82 GiB (12.2%)
  Shell: Zsh inxi: 3.3.13

It’s known bug, most likely fixed in Plasma 5.24.4 (not released yet). For now, you can try to add kwin_wayland to blacklist in /usr/share/drirc.d/00-mesa-defaults.conf – but you do it on your own risk, I didn’t try it and don’t know if it works.


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