The screen brightness of Y560 seems to change automatically. Running on Energy Star mode at the basic settings, but it still auto dims and brightens the screen.
Have dim screen after setting set to 10 minutes, but that only dims the screen after being afk correct? How to make screen brightness constant and only change if the user removes the battery or goes on AC power?
This is a feature of the autobrightness function.
Open the Lenovo energy management (via the battery touch sensitive button) then click on the gear icon between "i" and "?" and click on smart control tab and uncheck ALS (Ambient Light Sensor)
The settings for brightness settings for battery and A/C plugged in can be changed here (Lenovo Energy Management) for each power scheme (click on the power scheme then click on the gear on the right) and you can change the settings there.
If you are having trouble finding the setting, try the following steps:
Go to Intel settings --> basic user --> click on the power management tab --> change Plugged In to On Battery.
The option for automatic screen brightness should now be available - uncheck it.