I can't speak for hibernate/suspend, as this has worked well for me on every linux laptop I've owned (first one in the mid-2000s). For WiFi, many (most) vendor

I can't speak for hibernate/suspend, as this has worked well for me on every linux laptop I've owned (first one in the mid-2000s). For WiFi, many (most) vendors simply refuse to provide open source drivers, which hinders inclusion in the kernel. The blame here is almost entirely on the hardware vendors.