I have been warned against using Mainline due to instability. I will wait until a stable release, it’s my sister’s laptop anyway and I have another.
Mmm, as long as the kernels themselves are stable you should be fine. Worst case your computer won’t boot up and you simply boot back into the previous kernel
simply boot back into the previous kernel
That’s asking too much from somebody who cannot fix a screwed-up GRUB config from a Live USB (it took me several tries to successfully update-grub from the Mint installation, and the one time I succeeded, the config is wrong and I cannot boot into it: GRUB menu never shows up no matter what I press, and I set Windows as default for my noob sister). As I said, I’m not the primary user and I will now be mostly debloating and customizing Windows for her, after which she takes it to college. So working Linux is not on the agenda until Christmas at least, and I’ll put up with WSL (or my own laptop) until then.
That part is actually really easy, at least if you have a boot menu (most installs should have this)