RTX 4060 - PC don't wake up after sleep (KDE)

[dmt]

You probably need to preserve the video memory:

https://wiki.archlinux.org/title/NVIDIA/Tips_and_tricks#Preserve_video_memory_after_suspend

If you’ve already done that, picom can also cause it (should you use picom). If that’s the case log into a tty and killall picom

Instead of hard resetting enable REISUB and use that instead:

[HowTo] reboot / turn off your frozen computer: REISUB/REISUO

Difficulty: ★★☆☆☆ This tutorial was created because people are using a hard power off during freezes, so this will teach you how to turn off your computer when everything is frozen using softer means. So whenever you see someone saying they had to “Power Off” or “Hard Reset” their system without doing a REISUB, please send them here! If you’re reading this in response to a question, please click the green link above this text to bring you to the full unabridged text of the tutorial…

EDIT:
Corrected command to kill picom, it was missing an l.