http://bugzilla.kernel.org/show_bug.cgi?id=11457





------- Comment #20 from [EMAIL PROTECTED]  2008-09-01 18:01 -------
Okay, in order to see if ACPI can control the brightness,
please stop using xbacklight. :)
Can "echo 0 > /sys/class/backlight/acpi_video0/brightness" and "echo 10 >
/sys/class/backlight/acpi_video0/brightness" change the brightness level after
a fresh boot?
If yes, please kill acpid and run "cat /proc/acpi/event", check if there is
something pop up when pressing the hotkey.
If no, which means that the ACPI video driver can receive the event and then
tries to change the backlight via ACPI control method, which doesn't work on
this laptop.


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