This will not happen automatically, and I highly doubt it ever did on any other linux distro.
That is changing the ‘power profile’ of the nvidia card.
Which would have no impact if the nvidia is not running.
I cannot speak to your other configuration … but if it wasnt using PRIME, then it was probably using one GPU or the other. Most of the time trying nvidia-only on a hybrid system without extra configuration (like reverse-prime or a BIOS option, etc) would break things.
The iGPU being integrated and thus required for communication with the addon dGPU on some level. Usually meaning some firmware setting if possible at all.
I find it likely you were just never using the nvidia before but didnt realize it.
No, you use intel unless you use prime-run
or some other incantation.
(like a script with certain environment variables that would do something similar to prime-run)
Then just do prime-run gimp
(or equivalent) when you want the extra power.
I will repeat that if you want to avoid typing this all the time you can copy an existing desktop file and edit it to include prime-run. ex:
cp /usr/share/applications/gimp.desktop ~/.local/share/applications
(then edit the ~/.local/share/applications/gimp.desktop to use prime-run
)
And whenever you start gimp from the menu it will use your drop-in desktop file, and thus prime-run.
Another approach would be to use aliases, such as in ~/.bashrc
, ex
alias gimp="prime-run gimp"
(now whenever gimp
is run, it will be replaced by prime-run gimp
)
Again, both of those approaches are for ‘future convenience’ and are not required.
Should just be
sudo mhwd -r pci video-linux
I doubt its hurting anything. Its just not needed.