New SR MBP - sluggish GPU performance on battery power

Discussion in 'MacBook Pro' started by sc00ty, Jun 11, 2007.

  1. sc00ty macrumors newbie

    Joined:
    Jun 11, 2007
    #1
    I just got my new 15" 2.2ghz MBP today, and I'm having a pretty annoying problem. When it's plugged in everything works fine. Then when I'm using the battery, exposé and the dashboard are very sluggish. If I press the buttons to open them a few times it starts to run normally, so it seems like it's taking the GPU a few seconds to throttle up to normal speed. I did not have this problem on my old MBP with the X1600. How do I fix this?
     
  2. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #2
    uummm what are ur energy saving settings?? they might be set to "best battery" or something?? mayb try changing it to "best perf"?
     
  3. sc00ty thread starter macrumors newbie

    Joined:
    Jun 11, 2007
    #3
    I am using custom energy savings, but even set to best performance it's still messed up.
     
  4. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #4
    oh hhmmm, have u checked activty monitor to make sure RAM and cpu are not being used up by something random? sometimes on new macs spotlight uses ur cpu to index ur hhd.. other than that ive got no idea
     
  5. sc00ty thread starter macrumors newbie

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    Jun 11, 2007
    #5
    Nope. Like I said as soon as it's plugged in it works normally.
     
  6. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #6
    i wonder if its that nvidia powermizer technology thingo.. how it slows down the gpu when running off battery to save power.
     
  7. MGLXP macrumors regular

    Joined:
    Sep 29, 2005
    #7
    I have the exact same problem with my 1st generation Macbook Pro (sluggish expose on battery, fine on AC power). You also get the same effect if you connect a second monitor and use extended desktop. I have also seen the sluggish expose on a Mac Pro 2.66GHz connected to two monitors (so using extended desktop). I also know people with a 2.16, 2.33 and 2.4GHz Macbook Pro who also have the same problem.
     
  8. sc00ty thread starter macrumors newbie

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    Jun 11, 2007

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