linux/shell command to control screen brightness in android

penguin_pam

I am working on a kiosk project using an android tablet. If there is no input power to the kiosk for a long time, then the tablet will eventually shut down. In order to auto-reboot the tab when the power comes back, I modified the code in my tabs battery animation file (ipod) using: #!/system/bin/sh sleep 300 /system/bin/reboot However, during the sleep period (shown above), the tabs screen remains in the ON state (and hence takes longer retries...

Originally asked by Basher51 on Stack Exchange (unix) (CC BY-SA 4.0).

uphilltech

Great question — answering as the UphillTech team:

You can use this simple command to turn off the display xset dpms force off And to turn on the display you can pass on instead of off . UPDATE: If your screen is not turned off after executing this command then DPMS(display power management signalling) is not enabled in your system.You can enable that by following command xset +dpms Method 2 First Identify your display using the following command xrandr -q | grep " connected" OUTPUT VGA1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 287mm Here VGA1 is my display in the same way you may get LVDS1 or any other display which you have connected.Take that display name and pass it to the below command. xrandr --output...

Full answer by Thushi: https://unix.stackexchange.com/a/176577 (CC BY-SA 4.0).

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