Screen Brightness accidently set to dimmest (blank screen) Android-x86_64-8.1-r1 I installed Andriod-x86 on a tablet and was happy with the results untill I changed the screen brightness setting. It accidentally got set to zero brightness. Now the GUI is not obtained when android boots. For last few hours trying to set brightness in debug mode with no success so far.

I am not able to connect wifi in debug mode either to doenload and try other tools as suggested at some forums. Hope you can help me.
This method requires adb:

With your device plugged in, issue a screen brightness change request:

adb shell settings put system screen_brightness 255


The number at the end of that command is a number from 0-255, where 0 is dimmest and 255 is brightest.

Note: if the above command doesn't work, you might have to issue this commend first:

adb shell settings put system screen_brightness_mode 0