optimus-manager supports several ways to control the power state of the Nvidia GPU, however since v1.2 they are all disabled by default.
The AUR package doesn't seem to write a specific config so my impression is that you'll have to do that locally.
@DjebbZ
bbswitch is a way to power off the GPU, I assume your previous efforts regarded bumblebee/optirun?
Of course if you switch the GPU off, you won't be able to use it, but the purpose of bumblebee is, not unlike prime, to activate and use it conditionally.
Do I have to mark the topic as solved somehow ? I'm new to the forums, don't know all the rules.
If you are satisfied that your issue has been solved, edit your first post and add [SOLVED] to the title.
]]>This feature requires a Turing or newer GPU.
So I think it will be optimus-manager, bbswitch didn't work when I tried and doesn't support DXVK which I use anyway. Sigh... I think I understand the hatred towards nvidia regarding linux compatibility...
Thanks again guys, you rock!
]]>* intel --> only intel is active (nvidia is off so no battery drain from there, at least this is my understanding)
* hybrid --> both intel and nvidia are on (intel is used as primary and nvidia for render offloading if needed, you will have battery drain from the nvidia though except if you are on turing and afterwards chip where you can turn it off if not used)
* nvidia --> both are active again but nvidia is now used as the primary output
thus if you use the intel option you can have some battery saving mode.
]]>To nitpick on @V1del's answer, optimus-manager doesn't switch off the dGPU, one has to use the power management capabilities of the CPU/GPU as explained in the wiki https://wiki.archlinux.org/index.php/NV … stallation. Right ?
By the way @seth what is this DPM thing that pre-turing cards don't support ?
]]>Thanks for the link but I'm not sure I understand the relationship between prime sync and my problem (being Xorg running on Nvidia dgpu instead of Intel igpu).
Sorry. tbh, the reply was speculative reg. the subject (why read a wall of text if you can get away w/ a link for a related and common issue - plus I got in a bit of a hurry…)
To add to V1del's comment and before you ask: no, you cannot bbswitch off the GPU w/ prime render offload and pre-turing cards don't support DPM, so there's no way to cut the battery drain down with this setup :-(
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