Apologies if this isn’t the correct place.
I have an NVIDIA RTX4090 on Fedora 43 on Plasma 6.5.5 (although I have seen in this OpenSUSE TW too on earlier versions of Plasma).
In “Power Management” I have “Turn off screen” set to 15 minutes. Once my monitors have powered off (but with the machine still live, not sleeping) and powered on again, my desktop will lag every 8 seconds.
If I look at NVIDIA SMI, I see it idles at P8, and then tries to go to P0, lags, and drops to P8 again.
If I run a game, it will stay at P0, but the wattage will drop from around 350W (depending on game) to around 200W at the same time that it lags.
Is there anything more I can do to diagnose this issue?
The only thing I’ve found that helps other than a reboot, is to turn VRR on and off again on the display device itself.
Thanks for any help!