* No fan control out of the box, so CPU overheats after a new minutes. Fixed by installing a 3rd party fan control package.
* Broken sleep. Always wakes up 2-3 seconds after putting to sleep. Fixed by a series of hacks to disable the keyboard and lid while sleeping. Only the Power button is able to wake it up now.
* Display brightness setting lost after sleep. Always wakes up at 100%.
* Webcam does not work. There is no compatible driver from what I understand.
* Two-finger scroll is awful on Linux, compared to the buttery smooth scroll of MacOS.
* Poor battery life compared to MacOS, I estimate about 25% less.
* It can be tricky to figure out how the Mac keys are mapped to normal Linux keys: Alt, Option, Command. Also tricky to figure out how to remap them so that they are more usable on Linux.