Kernel not recognizing your hardware? Problems with power management or PCMCIA? What hardware is compatible with Gentoo? See here. (Only for kernels supported by Gentoo.)
I've been using a Saitek USB Gaming Mouse for sometime now and find it to be a great mouse, but if it goes unused for a few minutes the devices seems to go into a sleep mode and takes a few seconds to wake up when used again. Everything works fine with it and I have no problems other then this odd sleeping it does. Any ideas how to stop the lazy mouse from falling asleep? UDEV rule or something?