The problem still exist with this kernel:
alex-mayorga@VPCCW1FFXL:~$ uname -a Linux VPCCW1FFXL 3.7.0-999-generic #201212140435 SMP Fri Dec 14 09:36:32 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Pressing Fn+F5 and Fn+F6 makes the on screen indicator appear but they don't modify the LCD's brightness.
The problem still exist with this kernel:
alex-mayorga@ VPCCW1FFXL: ~$ uname -a
Linux VPCCW1FFXL 3.7.0-999-generic #201212140435 SMP Fri Dec 14 09:36:32 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Pressing Fn+F5 and Fn+F6 makes the on screen indicator appear but they don't modify the LCD's brightness.