Hi All - I’m experiencing flickering on my second monitor (If it’s occurring on my main monitor, I’m not noticing it).
It’s mostly noticeable when zen browser is open, but other apps it’s noticeable as well.
It doesn’t appear to be a full screen flicker, more like certain elements of a web page, or bands across my monitor that might flicker. The flicker is also subtle too, it’s not fully going black or anything else. Almost as if the frames are changing brightness but still displaying at the expected refresh rate.
I’m on Arch linux, with Wayland and KDE Plasma - everything is up to date.
Adaptive sync is off, and Explicit Sync is on. I haven’t come across many other solutions and I’m not really sure how to go about troubleshooting why this is happening - any help is appreciated.
I'm having the same issue. Thought it was a problem with thunderbolt/usb-c though.
I'm on Gentoo with amd64 stable, however KDE is running on ~amd64 unstable. Using wayland with a AMD iGPU.
What might have helped was increasing the response time of my monitor. Both monitors are now on fast (lowest setting for my main monitor, 2nd or 3 settings for my flickering monitor). It was on normal before.
I also turned off free sync on the monitors hardware menu instead of just from KDE’s display configuration.
From my understanding, you don’t want to be on your monitors highest response time setting but also not the lowest. So usually picking the middle if 3 are listed is best. Especially for higher refresh rate monitors. Again, not sure exactly if it helped but it seems like the flickering was reduced.
Try switching the cables of the monitors and see if the other one is flickering now. If that’s the case then just buy a new cable.
I have seen various “strange” problems because of faulty cables.
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I’ve seen a few people mention similar issues with Plasma 6 on Wayland lately. One thing that’s been working for others is disabling triple buffering for NVidia/Multi-GPU setups. You can try setting KWIN_DRM_DISABLE_TRIPLE_BUFFERING=1 in your environment variables and see if that calms it down. Also, since it’s mostly in Zen/Chromium-based apps, checking if turning off Hardware Acceleration in the browser settings makes a difference might help rule that out!