Brightness under battery power/Power Manager misbehaving?

[bmfyxpp]

A question for the power management settings experts:

When I switch from AC to battery power, the screen goes a bit dimmer-- yet in my power scheme, the brightness is set to 7 of 7 for both AC and battery power.

Using the Fn-Home and Fn-End brightness keys, I've noticed that there are eight brightness settings under both battery and AC power (levels 0-7). Brightness level 7 is definitely brighter under AC power than under battery power.

Am I missing something in Power Manager? Is there a BIOS setting I should check?

Thanks!

[GomJabbar]

Yes, there is a BIOS setting. You can set brightness to Normal or High.

If you select High, the LCD remains as bright under battery power as under ac power. However, a battery charge doesn't last as long.

[bmfyxpp]

Got it-- thanks!