Battery drain with Unregistered device SE?

Anonymous
2014-04-25T07:48:54+00:00

Hi all, 

Lately I've been noticing a large battery drain (at least by my standards) of ~1-2% per hour during connected standby. Based on what's advertised (7-10 days idle) I'm getting ~4 days at best? I ran the sleep study, battery report and energy report and came up with interesting results. I've also calibrated the battery and have no current pending updates. Any ideas as to why the large battery drain during standby? 

Also sorry in advance for the long post. I'm not sure how to post the full reports on this forum. 

Surface | Other

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  1. Anonymous
    2014-07-19T01:13:40+00:00

    I have always had this 'unknown' device.  My assumption is that it is the Tegra graphics device, because it is missing in your (my) report and it appears in other people's reports.  See http://answers.microsoft.com/en-us/surface/forum/surf2-surfhardware/noticing-faster-battery-drain-after-february/9197b834-5259-4337-89a0-4b31ce95d960 for example.

    As to why it is missing and showing as unknown?  My opinion is it's because the device is in some way faulty and is the reason for display errors that occur (SoD, battery drain ...).  However, I don't think it is now causing battery issues for me any more.  I'm getting 1% in 3hrs during connected standby. 

    View your Reliability History and see if there is a Video hardware failure at some point in the past.  I was getting dozens (and dozens) of display errors in the log, which seemed to be waking the S2 all the time.  Check logs.  Now have a replacement - very few display errors now, but still HW error - see below - and the Unregistered device.

    Have you a type cover?  That is causing issues for some?

    I uninstalled KB2883200 last month and it 'seemed to make a big difference to battery life.  Try it. 

    See WPC forum - http://forums.wpcentral.com/microsoft-surface-2/268732-3.htm#post2432297

    This update is replaced by later 'roll-ups', such as April's big update, so you're safe.

    See before and after -

     

    I can't uninstall that update, the modify/delete option doesn't pop up. Hop did you do that?

    By the war, and news atout tris problem?

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  2. Anonymous
    2014-07-13T10:08:56+00:00

    Yes. The problem continues

    Same. Expected a fix past patch tuesday, but no dice from Microsoft. I jokingly stated that this is the new tactic to get us to buy a new surface by killing our batteries. Constantly draining it till the holding capacity is to low to get through the day.. However I'm starting to feel this is the case seeing as theres still no update, making the connected standby function of this machine useless.

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  3. Anonymous
    2014-07-12T08:43:51+00:00

    Yes. The problem continues

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  4. Anonymous
    2014-07-11T19:44:05+00:00

    Hi, 

    Thanks for keeping us posted

    After a reset, have you installed the latest updates? 

    You can check the update information here. 

    Let us know if the problems continues.

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  5. Anonymous
    2014-07-09T19:39:54+00:00

    tried. nothing. i also tried full reset repartitioning.

    no results

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