Linux laptop support has been in my experience abysmal at best. Things that just work when running Windows XP are either horribly broken, or simply not implemented at all under Linux. Many Linux distributions have little or no real ACPI support. Imagine using your laptop without a battery meter, or any noticeable fan control whatsoever. Due to the lack of mature ACPI support in most modern distributions, I have had to deal with a very large amount of suffering.