This is a new laptop that I just bought. Came with Windows 8.1, now is a dual-boot. Sound Controls and Mute work with F9, F10, F11 like they do in Windows, but F12 for WiFi, F2 and F3 for brightness do not work. F5 brings up Display control, and F2 brings-up the Power Manager instead of taking Brightness Lower. F3 does nothing.
I also have Brightness control added to the panel, moving mouse up and down does not change screen brightness.
It also does not recover from Suspend.
Am I missing a Toshiba-specific configuration? Synaptic package manager shows
acpi-support packages installed from the distribution.