screen brightness / powersave

Discussion in 'Linux' started by starbright, Jan 9, 2009.

  1. starbright

    starbright

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    Is there a way to dimm the screen to save energy an extend running time?
    The KDE utility Powersave doesn't work.
    BTW: Does the cpu frequency scaling works? I don't know how to figure it out.
     
    starbright, Jan 9, 2009
    #1
  2. starbright

    Tamrac

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    The screen brightness is unfortunately being controlled by the BIOS. Older ones allowed lower settings. Newer BIOS versions have it at 50% as it's lowest as far as I can remmember. This was so ACER can hide the flickering problem with the LCD on some units.

    CPU scaling works, but I'm on the GNOME version of Mandriva.
     
    Tamrac, Jan 10, 2009
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  3. starbright

    starbright

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    I think this is a misunderstanding. I don't want to overrule BIOS setting (although this would fine).
    I would like (like in XP) control the brightness or even switch off the backlight. If this are commands to
    bios, it must work also from LINUX. But how?
     
    starbright, Jan 10, 2009
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  4. starbright

    thoza

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    FN left arrow or FN right arrow works for me ...
     
    thoza, Jan 15, 2009
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  5. starbright

    stepppy

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    I use the same method and have it at three clicks from its lowest setting, seems a good balance between brightness and saving battery :)
     
    stepppy, Jan 15, 2009
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  6. starbright

    Dulwithe

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    In one of the other posts (does mandriva work 100%), there is an explanation to uninstall kpowersave and install guidance-power-manager. In this, you can set screen settings as you need for battery power.

    Also, try your screensaver settings. There should be a setting for "blank screen".

    D.
     
    Dulwithe, Jan 27, 2009
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