https://bugs.kde.org/show_bug.cgi?id=477016
--- Comment #36 from Tim <[email protected]> --- (In reply to Zamundaaa from comment #28) > Brightness flicker means that the image gets *a tiny bit* brighter or > darker, not that the display turns off for a moment. What you have is almost > certainly that the driver lets the display go out of its supported refresh > rate range, making it turn off instead. Blurbusters have an article about this here https://forums.blurbusters.com/viewtopic.php?t=9249 black screen problem. It seems to happen a lot more with Freesync monitors. Monitors with the Gsync module do not have this issue because the module can handle FPS down to 1. As far as the VRR defaulting to 48hz, this behavior does not make sense to me. 48hz is low and kind of defeats the point of having a monitor that can do much higher refresh. If the GPU can do 240 FPS then the refresh needs to follow the GPU in my opinion. With VRR off, Kwin debug and the FPS counter on, we can see that on my system I getting around 230 FPS per its reporting and is somewhat stable. Turning on VRR causes the FPS to tank and is all over the place. If it is indeed to conserve power, why would it consume more power than when it is off and doing an higher FPS? With these modern GPUs, they can refresh a 2D desktop screen at max and not even break a sweat. -- You are receiving this mail because: You are watching all bug changes.
