Changing scrren brightness and cpu speed while on batteries

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Bob Day - 28 Nov 2006 16:30 GMT

Using a Dell D820 high end laptop. When undocked and using the battery, is
there a way to a) brighten the screen (it seems to dim while using batter)
and b) keep the processor at full speed (I believe it steps down). I know
this will shorten the barter life...I don't see anything in control panel
(such as Power Options) that allow these two settings.

Please advise.

Bob

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Shenan Stanley - 28 Nov 2006 18:20 GMT

> Using a Dell D820 high end laptop. When undocked and using the
> battery, is there a way to a) brighten the screen (it seems to dim
> while using batter) and b) keep the processor at full speed (I
> believe it steps down). I know this will shorten the barter
> life...I don't see anything in control panel (such as Power
> Options) that allow these two settings.

Read your manual?
This is *not* a software issue.

Your hardware is setup in a way (likely in the system BIOS) that dims the
screen (makes sense too) when you are running on pure battery power. This
is not a function of the operating system. This is function of the
hardware itself.

You can change it permanently in the BIOS I would presume.

You can likely change it 'on the fly' (and perhaps it will stick) with key
combinations. There is probably an "Fn" key and its associated color-coded
friends spread out over your keyboard. Pressing it and the one that stands
for "Up Brightness" and/or ""Down Brightness" will raise/lower your screen
brightness appropriately.

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Shenan Stanley
MS-MVP
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