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    USB 2.0 Power Bug - Notebook Owners Should Read This

    Discussion in 'Notebook News and Reviews' started by Meaker@Sager, Feb 14, 2006.

  1. Meaker@Sager

    Meaker@Sager Company Representative

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    http://www.anandtech.com/mobile/showdoc.aspx?i=2693&p=1

    It is also extremely important that we point out the existence of this bug on all of the platforms we tested; in other words, this is not exclusively a Core Duo problem. In fact, in the case of the T60/T43, the Sonoma based T43 actually lost a larger percentage of its battery life due to the asynchronous scheduler bug than the Napa based T60. We saw the same results with the ASUS notebooks; with only the integrated USB 2.0 camera connected, the ASUS Napa notebook lost 17% of its battery life due to the bug, while the Sonoma based W5A lost 25.5%. Once again, implying that this is a Core Duo issue alone is simply incorrect; the problem affects Sonoma platforms just as much, if not more, than Core Duo platforms. Based on the results we've seen in our perfmon analysis we tend to believe Microsoft's assessment that the problem would exist on any system that spent any time in C3 or lower power states.
     
    Meaker@Sager, Feb 14, 2006
    #1
  2. coriolis

    coriolis Notebook Nobel Laureate

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    Eek, I shoulda just posted it in the News/Announcement forums, cos there's been like 4 reposts :p
     
    coriolis, Feb 14, 2006
    #2
  3. USAFdude02

    USAFdude02 NBR Reviewer & Deity NBR Reviewer

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    Moved to News and Reviews section.
     
    USAFdude02, Feb 14, 2006
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  4. coriolis

    coriolis Notebook Nobel Laureate

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    I posted this yesterday, its in the Hardware forums, and since this is here, you can close that one :p
     
    coriolis, Feb 14, 2006
    #4
  5. nathanhuth

    nathanhuth Notebook Evangelist NBR Reviewer

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    Should read:
    "ALL Intel notebook owners SHOULD READ THIS!"
     
    nathanhuth, Feb 14, 2006
    #5
  6. circa86

    circa86 Notebook Virtuoso NBR Reviewer

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    It might be an issue with AMD user's also, because it is a windows issue not an issue with the processors.
     
    circa86, Feb 14, 2006
    #6
  7. ikovac

    ikovac Cooler and faster... NBR Reviewer

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    Hi guys,

    I did the reg fix for the easier implementation. You can find it here.

    Cheers,
     
    ikovac, Feb 14, 2006
    #7
  8. G-Force

    G-Force Notebook Consultant

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    That's a bit of a problem to my notebook, it has an USB 2.0 webcam. Well, when it's back from it's RMA, i will try the fix, to see if it makes any difference on the already relatively low battery-life.
     
    G-Force, Feb 14, 2006
    #8
  9. ikovac

    ikovac Cooler and faster... NBR Reviewer

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    I think it would be wise to leave the feeling that ALL WINDOWS notebook users should read this in the thread name, because it seems that it is indeed the microsoft windows bug. It may affect all platforms. And registry fix surely doesn't ask what CPU is going to execute it.

    Cheers,
     
    ikovac, Feb 14, 2006
    #9
  10. Charles P. Jefferies

    Charles P. Jefferies Lead Moderator Super Moderator

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    I just did the reg fix - went smoothly. I'm not on battery that often, but I'll let you know how I make out when I go on. :)
     
    Charles P. Jefferies, Feb 14, 2006
    #10