Bug 503048

Summary: Nvidia: disable sleep when power management is not setup correctly
Product: [Plasma] plasmashell Reporter: Peter Eszlari <peter.eszlari>
Component: Power management & brightnessAssignee: Plasma Bugs List <plasma-bugs-null>
Status: CONFIRMED ---    
Severity: wishlist CC: kdedev
Priority: NOR    
Version First Reported In: master   
Target Milestone: 1.0   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Peter Eszlari 2025-04-20 09:34:48 UTC 
Nvidia needs a special setup to make suspend / hibernate work, see e.g.:

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

https://download.nvidia.com/XFree86/Linux-x86_64/565.77/README/powermanagement.html

Most distributions don't set this up for the user, resulting in a broken out-of-the-box experience when returning from sleep. You can find a lot of user complaints about this online.

As a safety measure, Plasma could disable sleep completely, when it detects a Nvidia card as the main GPU and the needed services:

- nvidia-suspend.service
- nvidia-hibernate.service
- nvidia-resume.service

are not active and

/proc/driver/nvidia/params

is missing "PreserveVideoMemoryAllocations" and "TemporaryFilePath".
Comment 1 TraceyC 2025-04-21 17:18:58 UTC 
This sounds like it could be made part of 
https://invent.kde.org/plasma/plasma-workspace/-/issues/64