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Hello.
For all guys having problems with brightness control on Toshiba T130 and probably other Toshiba notebooks which is not responding via Fn+F6/F7, just add this to the line "GRUB_CMDLINE_LINUX_DEFAULT" in /etc/grub/default:
acpi_backlight=vendor
Nothing more to be done.
So the example line may look like this:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
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