Lenovo Y570 backlight

[Kevin Oberman]

On Mon, Sep 3, 2012 at 1:27 PM, SicoSico <resuscitated_wael at hotmail.com> wrote:
> 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.

At least on the X220 and T520, the ACPI call is:
acpi_call -p '\VBRC' -i n (where n is 0-16)
-- 
R. Kevin Oberman, Network Engineer
E-mail: kob6558 at gmail.com