Messages in this thread | | | Date | Tue, 16 Aug 2011 16:18:55 +0530 | From | "J. Bakshi" <> | Subject | LCD brightness not reflected at brightness file |
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Hello list,
I have compiled linux kernel 3.0.1. The LCD current brightness is show by /sys/class/backlight/acpi_video0/actual_brightness
I can also control brightness by <Fn> key and correctly read by /sys/class/backlight/acpi_video0/actual_brightness
BUT
echo 0 > /sys/class/backlight/acpi_video0/brightness
echo 8 > /sys/class/backlight/acpi_video0/brightness
etc.... has no effect !!!
Could anyone give me any clue please ?
TIA
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