"Unable to cancel system wake" repeating in system log?

Discussion in 'iPhone' started by sgrrsh26, Oct 21, 2011.

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  1. sgrrsh26, Oct 21, 2011
    Last edited: Oct 22, 2011

    sgrrsh26 macrumors 6502

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    Jul 19, 2009
    #1
    Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3)

    My system status system log keeps showing "Unable to cancel system wake for 2011-10-21 09:20:12 -0400. IOPMCancelScheduledPowerEvent() returned 0xe00002c"

    Like all day it keeps logging this.
     
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  2. sgrrsh26, Oct 22, 2011

    sgrrsh26 thread starter macrumors 6502

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    #2
    Im pretty sure this has to do with the standby drain.
     
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  3. French, Oct 22, 2011

    French macrumors regular

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    #3
    I also have this in my log (4S).
     
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  4. sgrrsh26, Oct 22, 2011

    sgrrsh26 thread starter macrumors 6502

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    #4
    I saw a post on another site claiming that an app was not allowing the phone to sleep. This could be the reason why batteries are draining in standby.
    another note, after a full restore Ive only saw the message once. Pretty sure my standby will improve like when I first had the phone.
     
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  5. ScottW1, Oct 22, 2011

    ScottW1 macrumors regular

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    Aug 27, 2010
    #5
    Probably not related. I have a ton of those messages, but am NOT having any battery issues.

    I currently show 15 minutes of usage (this was a short phone call, then some maps/gps usage, and some time playing with "find my friends"), along with 4 hours of standby.

    Battery is at 97%.
     
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