As the subject says, I have a Toshiba Satellite U940-101 and my keyboard backlight does not work with Linux. I am using Linux Mint 14 Cinnamon 64bit. On my laptop, Windows 8 was pre-installed and I can start Linux only by switching off the UEFI option and the secure boot option in Bios. The backlight works while I am in the Bios (version 1.30) and in Windows, but it turns off as soon as I boot Linux, just after the Toshiba booting symbol disappears.
In other forums I have read that switching off ACPI in Bios could help in making the backlights work in Linux, but apart from the fact that this would turn off other important functions, my Bios does not even provide the option of turning on/off ACPI.
I have already tried another Linux distro (Fedora 17), but there I have the same issue with the backlights. I have also installed all the drivers I could find for my Toshiba Satellite, both from the Toshiba website and the Linux (Mint) compatibility drivers from the software manager.
Could it be a kernel problem which is not solved / updateable yet?
I am a beginner in Linux and would be thankful for every hint.