You should run sudo mhwd -i pci video-hybrid-intel-nvidia-390xx-bumblebee now, and then reboot. If you want an application to use the NVIDIA GPU, then you need to run optirun <program> (e.g. run optirun glxgears to test it).
I will restart now and run the command, in which case I would like a particular steam game to use the NVIDIA GPU, how should I proceed?
I believe you can change the launch command to include optirun in Steam.
Ahh, yes, log in, and run sudo systemctl set-default graphical.target, then reboot.
perfect, what answer do you want me to mark as a solution? Alias, thank you, you saved my life!
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