I've fixed this problem in this way:
1) sudo gedit /etc/default/grub
2) In this row GRUB__CMDLINE___LINUX__DEFAULT="quiet splash"
I've added acpi___backlight=vendor -->
GRUB_CMDLINELINUX_DEFAULT="quiet splash acpi_backlight=vendor"
3) I saved the file and close it.
4) sudo update-grub
5) Reboot the system and I've tried special key Fn.
Thank you to everybody.
Bye.
** Changed in: linux (Ubuntu)
Status: Incomplete => Fix Committed
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Carlo Cavalieri D'Oro (carlodoro88)
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https://bugs.launchpad.net/bugs/1085270
Title:
problem brightness adjustment by Fn keys with linux-image-3.2.0-34
-generic-pae
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