Many cheap chinese web cameras from non know brands,really problematic to make work printers which older from 2015 for example canon ,Lexmark cause they use proprietary communication protocols and thus drivers for inux or exist in shitty state which would not work on modern system but worked on Ubuntu from 2012 or not driver not exist at all and so on other very specific type of devices

Certain less well known smaller brands might not work as too few people know the HW

Same goes for very specialized hardware, if it wasn't on Linux to begin with, it probably won't work

On the peripheral end, ElGato. You can usually get their stuff to work but they provide little to no support, usually have issues to work out, and you'll always be relying on third party replacements for their software.

I got a stream deck plus with the xlr dock, since even though I quit content creation I like what it provides and have no reason to downgrade my mic, but the thing has been a headache and a half ever since I switched to cachyOS.

Some useful stuff for some laptops - worth checking if you're buying one for linux:

https://wiki.archlinux.org/title/Laptop

https://wiki.archlinux.org/title/Category:Laptops

Also this - i guess this is the inverse question though:

https://linux-hardware.org/

There's this printer that I wanna use for my job but when I went through the process of connecting it the driver wasn't listed among the massive amount of options. So I gotta print using a work computer instead of my laptop 😪

I had an issue with an old Lenovo X260 laptop. The onboard bluetooth device was showing as not being present if the wireless device was loaded. I could have one or the other, but not both. BT/Wifi was being supplied by the same M.2 card, so as soon as a module loaded (the wireless loaded first I guess) it prevented it from being used by another module. I'm not sure if there was an actual fix to that, though. I had a spare USB bluetooth dongle so I just ran that instead.

Is there a broadcom firmware package you need to install? I have NEVER gotten away with neglecting that step on a broadcom card.

The touchpad in the Lenovo 300e is not supported; although the touchscreen does work. I use mouse which is fine most of the time, but it would be nice if the touchpad would be supported one day.

I had issues with brand new hardware. Had to use testing on debian to get proper resolution.