Bug#918966: new(?) backlight brightness script

[Thorsten Glaser]

On Fri, 11 Jan 2019, Aleksi Suhonen wrote:

> if [ -d /sys/class/backlight/acpi_video0 ]; then
> 	readonly SYS_CONTROL=/sys/class/backlight/acpi_video0/brightness
> 	readonly SYS_MAXIMUM=/sys/class/backlight/acpi_video0/max_brightness
> else
> 	readonly SYS_CONTROL=/dev/null
> 	readonly SYS_MAXIMUM=/dev/null
> fi

My Thinkpad has yet different paths, but I don't have them
at hand right now. Will have to dig them out from /etc/rc.local
when I have it again (it's at work and I'm not).

bye,
//mirabilos
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