Satellite U940 - backlight on the keyboard in Linux

In addition to Windows 8, I installed Linux Mint 14 cinnamon on my Satellite U940-101 (now I have a sort of dual boot by activating the UEFI option in Bios power switch). Everything works fine, except for the lighting of the keyboard under Linux.

According to other forums, the only possibility to activate the backlight is to disable ACPI in the Bios. The problem is that in the Bios of the U940-101 (Bios Version 1.20), there is no option, at least I'm not and there is also that no Bios update available yet.
Does anyone know how to activate the backlight of the keyboard in these circumstances?

Thanks in advance!

As far as I know, keyboard backlight is controlled by the specific tool of Toshiba and it is designed for Windows operating system only, so I put t think that the BIOS update will or can help you with this.

Tags: Toshiba

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