Flatpak can look daunting...
i cannot fit a ssd in my phone, and i only have 16gigs of soldered emmc so yeah flatpak isn't an option for me, i keep my aur packages...
How to switch thr state of Fn keys?
on my laptop there is a Fn key combinasion to switch between them... btw i don't think it's possible to trigger this from the Os side of thing, it is tied to the firmware...
State of the Nvidia open source driver in late 2023?
it's not there yet but in a few years from now there is hope, a vulkan driver is in the work and the nvidia signed firmware would allow power management for newer gpu, but it's not ready yet...