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
    2015-06-28T14:46:26+00:00

    I have found a solution. Go to Windows Update in the Control Panel. Then click Installed Updates on the left. Scroll to the bottom and find an update called Update for Microsoft Windows (KB2919355) and uninstall it. Then restart your Surface 2. This should fix the problem. I did it and Unregistered Device SE or the Tetra I2C Controller Drivers have appeared on the Sleep Study. See here:

    There will be some changes like OneDrive being called Skydrive and so on, but nothing major. I personally believe it is worth the price.

    Hope this helps.

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  2. Anonymous
    2015-05-19T00:01:09+00:00

    I will try this. Thanks

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