Linux @lemmy.ml Sentau @discuss.tchncs.de 2 wk. ago

Testing if VRR is active and working

I recently updated to fedora 40 and enabled the experimental setting to get VRR running. But I am an idiot who has been playing at frames rates between 30-60 on screens without VRR for almost all of my life so I can't even know if VRR is actually working or not. Is there some rest I can run to see if VRR is functional¿? If not, which parts of the game should I concentrate to see the difference between VRR and no VRR¿?

Edit : I am on a laptop with the integrated screen being the one being used. I am currently using ublue-main

10 comments

https://github.com/Nixola/VRRTest

Also afaik it only works in fullscreen on Linux (and in programs that support it).
- I am on ublue which is immutable. Do appimages work normally on immutable distros¿?
  
  Supposedly.
  
  An appimage should run where, normally you'd put that in your home directory. The immutable bit is outside of your homedir.
  
  Probably would be easier to download LÖVE and run it with that
Remember to enable vsync in game for vrr to work. Use Mangohud to see performance details. With VRR working properly, your FPS should fluctuate as you play the game, byt the feeling should be similar to having smooth vsync-ed game locked to your refresh rate with no stuttering. You can compare that to when VRR is disabled to see if it’s different. You should see the difference with bare eye.

Also VRR Test as others mentioned
Will your display device or associated equipment tell you? My home theater receiver has a signal info button that will display the refresh rate or VRR, if enabled. Also has HDR mode if any, as well as audio input & output formats.
- Sorry I should have mentioned that this is the integrated screen of a laptop
  
  Alas. Hope you find a way to verify your set up!

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