As the original poster described, I tried the indicator-brightness.py script for setting the brightness on a Zenbook Prime: https://help.ubuntu.com/community/AsusZenbookPrime#Experimental_changing_brightness_workaround_1
Because setting the brightness level to zero shuts down the backlight, I patched indicator-brightness.py to show levels starting from 1. This works for me on BIOS 215.
As the original poster described, I tried the indicator- brightness. py script for setting the brightness on a Zenbook Prime: /help.ubuntu. com/community/ AsusZenbookPrim e#Experimental_ changing_ brightness_ workaround_ 1
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Because setting the brightness level to zero shuts down the backlight, I patched indicator- brightness. py to show levels starting from 1. This works for me on BIOS 215.