I have Compaq Evo N800v With acpi kernel module on (add acpi=on in grub.conf kernel line) you can also use ACPI events for backlight (closing/opening the display) /etc/acpi/lid: event=button/lid.* action=/usr/local/bin/radeontool light toggle provided you have copied my modified radeontool (toggle option added) in /usr/local/bin See attached radeontool-1.2.tgz
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radeontool-1.2.tgz
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