[Solved] - Tower's 1st [no, 3rd] Hard-Reset since clean-reinstall.

[Pliny.D.Elder]

I've edited my original post, & the subject line. Whilst my alteration will be of no interest to anyone else, on principle i don't wish anything i place in the public domain to be knowingly inaccurate.

Now kdemeoz,
How is that freezing going?
I am surprised because Maui is the stablest of the O/S on my desktop computer.
What graphics driver are you using?
When did this start? Was it after an update?

Code:

cat /var/log/apt/history.log | more
sudo apt-get install --reinstall xserver-xorg-input-all kwin

Have you had this problem after adding widgets?
I would backup my /$USER/.config/        plasma* & kwin* files in tty. Reinstall kwin, xserver-xorg-input-all & reboot
Change all settings to as when installed. Breeze,icons,colour, &  see how that performs for a while. Get rid of your widgets. Then you can slowly start adding the personal colors, widgets, and so on.
Either turn off Desktop Effects for a while or before going into suspend or keep them to the bare minimum.
I can remember a desktopheme that gave me hell until one day I changed it, and my ills were cured.
Updates can give you woes but they can also cure your computers maladies!
You could try one of these possible solutions.
http://askubuntu.com/questions/483416/ke...er-suspend
https://ubuntuforums.org/showthread.php?...007&page=2
And this an old post but looks promising.
https://forums.linuxmint.com/viewtopic.php?t=152185