That's a bit of a loaded question given the huge variety of hardware configurations out there, and the fact that most vendors only test with Windows. Linux hard

That's a bit of a loaded question given the huge variety of hardware configurations out there, and the fact that most vendors only test with Windows. Linux hardware compatibility has improved vastly over the years, but I don't think it will ever be 'fixed' for all possible hardware configurations. For wifi, anything with intel wifi will work fine. Atheros and Killer generally work fine as well. Basically, just stay away from Broadcomm and Realtek. For battery, ymmv. the 2 most recent laptops I've used with linux (a dell xps 13 and a system76 darter pro) get decent battery life (8-10 on the dell, 5-8 on the system76). On the dell, the battery life wasn't much different than windows 10 on the same machine. For sleep, this usually works fine, but can be broken on certain hardware. On the dell laptop sleep worked, but there was an annoying issue where sometimes upon resume the cpu would get stuck at the lowest frequency. On the system76, I initially had an issue with a 10-20 second delay resuming from sleep but that was fixed with a firmware update. Presently, sleep/resume works without issue 100% of the time for me on that machine