naveen,
you need to manually set the boot parameter 'acpi_backlight=vendor' if
you use grub as your boot manager, edit /boot/grub/grub.cfg and add the
parameter to the end of the appropriate line that begins with 'linux'.
be sure to do this whenever you get kernel updates too.
--
You received
I have a fresh install on natty on my Dell Studio 1558, The brightness
keys do NOT work with the last PPA update with kernel 2.6.38-11.
If I boot with the previous kernel the brightness keys work as expected.
2.6.38-10-generic-pae #46+kamal~mjgbacklight4-Ubuntu SMP Fri Jul 15
03:10:48 UTC 2011 i68
