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    Setting BIOS to "brighter"?

    Discussion in 'Lenovo' started by BNHabs, Feb 17, 2009.

  1. BNHabs

    BNHabs Notebook Deity

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    How do you do this to make your screen brighter?

    Does it become a lot brighter? Does it get brighter even on electrical power? You know when your laptop is on battery it's low in brightness then you plug it in and it becomes brighter? Does it become brighter in both ways?

    Whats an estimate in how much battery life you will loose?
     
    BNHabs, Feb 17, 2009
    #1
  2. ressom.

    ressom. Notebook Consultant

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    The setting in the BIOS only makes the brightness when you are on battery power a notch brighter.
     
    ressom., Feb 17, 2009
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  3. miro_gt

    miro_gt Notebook Deity

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    look in BIOS, there's an option to save bettary power or not. By default when on bettary the screen doesnt go to full brightness.

    I did not like that and changed it to full brightness even when on battery power.
     
    miro_gt, Feb 18, 2009
    #3
  4. jonlumpkin

    jonlumpkin NBR Transmogrifier

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    I disabled the BIOS control as well. I still have the brightness go down on battery, but it is controlled by the ThinkVantage Power Management software and I can easily override it by changing profiles or pressing Fn+Home.

    Basically, I don't like any type of setting that restricts what I can do with my notebook. So it had to go (I also turned off the extremely annoying power state beep when you unplug the power cord).

    On my x200 Tablet, the difference in power usage between moderate brightness and maximum brightness is ≈4 watts. My default "Energy Star" [6/15 brightness] profile can push 10 hours of battery life and uses ≈6 watts, but my max brightness seting "Sunny Day" is lucky to get 6 hours, and uses ≈10 watts. However, I have an LED screen, and the difference in power usage may be even more pronounced on a CCFL model.
     
    jonlumpkin, Feb 18, 2009
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  5. pufftissue

    pufftissue Notebook Evangelist

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    There is no option to do this on my W500 with the latest bios.
    It annoying as when you unplug, no matter the profile, the screen dims just so slightly, about a notch. But it does it in fine gradations and for added effect, takes about 5 seconds before it starts to do this. But I'm sure that the brightness is not full!

    Please someone tell me how to fix this!

    Something is wrong with the power manager driver, b/c if I install a fresh copy of windows vista and unplug, the screen brightness doesn't dim. This is a flaw and should be fixed.
     
    pufftissue, Feb 18, 2009
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