Good day, perhaps someone has an idea how i can debug that. My laptop i7-8565u, 16gb ram, internal intel gpu, kubuntu 24.10. Overall the laptop works really fine, but after being some hours the os gets more and more sluggish, while the systemmonitor or htop doesn’t show any specific drains. like the ram is free and the cpu does nothing. But it is still sluggish. I thought about the bad gpu, too and found intel_gpu_top, which doesnt show any processing either. Rebooting still make everything fast again. It mostly feels like the gpu is the issue.
plasma-systemmonitor can show more than RAM/CPU usage.
GPU usage is unlikely to be a bottleneck.
It can show IO usage, also please report if you use mounted Network filesystem.
No network filesystem mounted, I looked through the Systemmonitor when the last time it was sluggish, but didn’t see anything obvious. The system is currently ok so i will report back if the next time it happens and look at the IO.
Disable Night Light and relogin.
For me Night Light cannot be used since upgrading from Plasma 6.1, it slows all my mouse movements and animations effects.