System hangs / mouse extreme delay after finally convincing my wife to move to Linux

[MePhartalot]

Hi, after finally convinving my wife to move to linux I have created a problem for her.

On her work laptop (hp elite probook, i5, 16gb ram, nothing special), I have done a clean install of kubuntu.

She only uses a couple of apps;

Firefox
Edge for work stuff
Libre Writer
Libre Calc
Flameshot tool for screenshots
Protonpass her password manager as a browser extention
Dropbox

Multple times per day while working her system sort of hangs. I'm able to move the mouse, and the mouse 5 seconds later will jump a bit to the right or left, so its not completely stuck, but i am unable to use alt-tab to open another window for example.

How do i even start to troubleshoot this?

The only thing that seems to help is a hard reset atm when this happens...

I really want her to stay on linux

edit: Oh btw, its a clean install of Kubuntu 24.04. I've also done clean installs of 24.04 on 2 other laptops in the house and a desktop pc, same setup and those all run just fine.. It has to be the wives one ofcourse

[shag00]

Which video driver are you using?

[oshunluvr]

You need to figure out what process is causing the hang. I'd start with sudo dmesg and see what it says there. Aslo you can note the time the mouse freezes and the time it unfreezes and review /var/log/syslog during that time span.

[jlittle]

"mouse extreme delay" can be memory filling up causing parts of the DE to be swapped out; though I would have thought there'd be lots of other problems as well. It might be worth starting the system monitor at login to see how memory is going, or if there are processes pegging the CPUs.