http://forums.fedoraforum.org – My daughter's 64 bit Toshiba Satellite L655 suffered from the common Toshiba laptop problem of Invisible battery under Fedora 16. dmesg | grep batt would report Battery absent. This appears to be common with Toshiba laptops under Fedora, Ubuntu, Centos, Debian, and BackTrack Linux. Online research pointed to custom kernels, which sound like a headache; and a simpler way using Grub2. (HowTos)