Option "Monitor GPU" prevents NVIDIA from going to sleep (D3Cold)

[NicolasThierion]

Has this issue been covered in the Wiki?

• I have read the Wiki and my issue is not covered.

Is there an existing issue reported already?

• I have searched the existing issues, it does not exist.

What is the unexpected behavior?

The option "Monitor GPU" prevents NVIDIA GPU to enter D3Cold power save mode.

I suppose you call "nvidia-smi" to get the metrics, and the fix is not easy.
I don't think anyone prefers having vitals on GPU rather than saving the battery, but the issue is not noticeable easily. Maybe the option should be greyed out for laptops, or at least come with a warning.

Steps to reproduce the unexpected behavior.

• Watch the power_state of the GPU:

watch -n .2 cat /sys/class/drm/card[0,1]/device/power_state

• Open settings
• enable "Monitor GPU" option.
• See GPU is kept awake

Relevant log output

No response

What distribution and version of Linux are you using?

Fedora

What version of Gnome are you using?

46