Created attachment 142986 [details] xorg log With ABM off and brightness at the minimum (0), the screen is on but low brightness. If you set ABM to 4 and then maximize a black terminal window, the screen will for all intents and purposes turn itself off. When going back to a bright screen it will turn on again. By on and off here I don't mean actually off, but the brightness is almost not visible. I am using a Lenovo A485
Created attachment 142987 [details] dmesg log
I logged the actual and brightness settings with 1 second delay: actual: 771 brightness: 0 abm level: 0 actual: 771 brightness: 0 abm level: 0 actual: 771 brightness: 0 abm level: 0 actual: 771 brightness: 0 abm level: 0 ABM is turned to 4 /* Screen is on initially, but */ actual: 593 brightness: 0 abm level: 4 actual: 428 brightness: 0 abm level: 4 /* About here the screen is basically off */ actual: 368 brightness: 0 abm level: 4 actual: 339 brightness: 0 abm level: 4
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