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Lenovo Dual GPU Laptop on Linux
(lemm.ee)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
I have similar laptop currently and I have it set up exactly as you want. I'm on Void Linux with KDE Wayland, but I was using Fedora few months ago and I remember it working correctly too. Wayland uses integrated GPU by default, so in case I want some program to use dedicated GPU, there's handy script to do that (it just sets few env variables).
I think it should be quite easy to set X with i3 to use integrated GPU, just like Wayland does.