Comment 13 for bug 30272

Indeed,

 The issue is that the toshset driver cannot set the cpu speed to normal (100% cpu speed). This is likely because the toshiba modules are not loaded correctly (as identified by Simon Law). I think toshset -cpu fast fails because it tries to call a kernel call which simply doesn't exist due to the module not being inserted. Worse still, the module can't be inserted, and gives some error :(

Hopefully within a few kernel upgrades this issue can be resolved. Check back here to see progress and maybe you can switch back from Windows!

Regards,

Ali Ross