I have a problem with my wife's Toshiba A300 laptop. Sometimes after booting the keyboard is not working. There is no indication of problem in various logs. Usually after rebooting the keyboard works fine. The strange thing is that the touchpad is working fine all the time, and that the keyboard is always working in grub menu. This isn't probably a hardware issue as this problem didn't occur in 9.10 (I recently did a clean install of 10.10).