Lenovo Y570 backlight

Mon Sep 3 20:27:46 UTC 2012

I think this has something to do with changing the brightness level, but I
can't change its value.

#acpi_call -p '\_SB.PCI0.LPCB.EC0.BRTS' -i 3
1

I just want to set the brightness to a minimum value instead of the maximum
one.

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