Comment 163 for bug 1803179

(In reply to Matthias Fulz from comment #144)
> Ok here are more tests:
>
> Disabling the audio part with your suggestion ist working.
> No NVIDIA audio in powertop nor in lspci.
>
> Your solution is basically loading / unloading the nvidia modul now, which
> indeed is working, but not the optimus part I think?

Optimus IS working here, no problem at all.

[snip]
> For some users it might be fully ok to just use load / unload nvidia as it
> make a difference for the power consumption.
>
> But for me it's around 1/3 missing runtime, which relly hurts me :)
>
> But perhaps you could try my workaround with two boot entries and check the
> power consumption on your side, when running intel only?

I will try this maybe tonight when I will have more time to spare. I too would be interested in gaining 20-30% battery life! But, then again, I wouldn't want to have to reboot to be able to use the dGPU (I use it for blender3d).

> for me it's around 7-8W intel only and around 11W when using your workaround.
> But again your solution is just not really disabling the nvidia card,
> instead it's more like just not using it and let it stay in idle mode with
> limited PM.

Yes, and no... as far as I can see from my tests, it is not staying in idle mode, it is being fully powered down by the kernel when not in use, and fully powered up again when I use optirun.