i5/256 Surface Pro 4 overheats and battery drains while 'sleeping'

Anonymous
2015-11-04T01:55:47+00:00

Split from this thread.

My SP4 gets very hot and drains the battery very fast even though it is asleep. I found it very hot in its sleeve and down to 28% earlier today. Found it dead later in the afternoon. This is one of MANY issues this device has.

(My SP4 is not part of the insider program)

Surface | Surface Pro | Power and battery

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Anonymous
2016-02-17T23:04:09+00:00

Hi All,

We released an update on 2/17/2016 that addresses this issue.

We recommend that you install this update to keep your Surface performing its best. You can get updates now by checking Settings> Update & security> Windows Update.

To confirm the updates are installed, check Settings> Update & security> Windows Update> Advanced options> View your update history.

Thanks,

Josh

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  1. Anonymous
    2016-05-10T18:51:48+00:00

    Same here. Just update with the May 9th updates, rebooted, logged in and went to do something else. Come back to my Surface, fans screaming, HOT. "LockAppHost.exe" has been running. Surface was docked all the time. Is this thing ever going to work like expected?

    After all this time, I expect it to fail all the time. My Surface never fails to meet these expectations :)

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  2. Anonymous
    2016-05-10T06:37:47+00:00

    Same here. Just update with the May 9th updates, rebooted, logged in and went to do something else. Come back to my Surface, fans screaming, HOT. "LockAppHost.exe" has been running. Surface was docked all the time. Is this thing ever going to work like expected?

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  3. Anonymous
    2016-04-30T13:13:14+00:00

    last week, I just reset my SP4 with fresh recovery image,and then patch to all 4/19 updates.

    but I still have the battery drain issue. I check it's LockAppHost which costs the most battery energy.

    who can tell me the workaround?

    ![](http://fud.community.services.support.microsoft.com/Fud/FileDownloadHandler.ashx?fid=a06419a1-9374-40b7-88f2-a1849b0bec30)

    ![](http://fud.community.services.support.microsoft.com/Fud/FileDownloadHandler.ashx?fid=3d9839f2-e342-449a-b2b1-bb7dca7205a4)

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  4. Anonymous
    2016-04-29T20:49:37+00:00

    Today my Surface Pro 4 can't properly sleep again. When I remove it from my bag, it is really hot!

    The sleep study shows that it can't enter connected standby.

    Top Offenders

    Top 5 offenders, ranked by active time

    NoCsPhase.Invalid PDC Phase 100% 0:55:40
    CPU C0 Time Processor 90% 0:49:47
    CPU C0 Time.Non-attributed Time Processor 88% 0:48:47
    Marvell AVASTAR Wireless-AC Network Controller Networking 9% 0:04:50
    BI Activator 4% 0:02:13
    No CS Phase 100.2% 0:55:40
    Connection Phase 0.0% 0:00:00
    Shell Phase 0.0% 0:00:00
    PLM Phase 0.0% 0:00:00
    Maintenance Phase 0.0% 0:00:00
    DAM Phase 0.0% 0:00:00
    Low Power Phase 0.2% 0:00:05
    Resiliency Notification Phase 0.0% 0:00:00
    Resiliency Phase n/a n/a

    Power consumption (look at the Total consumption, incredible! )

    \Device\HarddiskVolume3\Windows\System32\LockAppHost.exe [username] 30713495 18676911 0 0 0 0 0 12036584
    System [SYSTEM] 181341 102791 0 0 0 9889 0 68661
    \Device\HarddiskVolume3\Windows\System32\svchost.exe [LocalSystemNetworkRestricted] [SYSTEM] 180876 113784 0 0 0 0 0 67092
    \Device\HarddiskVolume3\Windows\System32\svchost.exe [netsvcs] [SYSTEM] 109534 60474 0 0 0 6103 0 42957
    System Interrupts [SYSTEM] 95272 54453 0 0 0 0 3778 37041
    \Device\HarddiskVolume3\Windows\System32\RuntimeBroker.exe [username] 40604 24258 0 0 0 0 0 16346
    \Device\HarddiskVolume3\Windows\explorer.exe [username] 14669 8515 0 0 0 724 0 5430
    \Device\HarddiskVolume3\Program Files\ESET\ESET Smart Security\ekrn.exe [SYSTEM] 12473 6024 0 0 0 1687 0 4762
    \Device\HarddiskVolume3\Windows\System32\svchost.exe [RPCSS] [NETWORK SERVICE] 11419 6911 0 0 0 0 0 4508
    Microsoft.Windows.Cortana_1.6.1.52_neutral_neutral_cw5n1h2txyewy [username] 9891 3177 0 0 0 2692 0 4022
    \Device\HarddiskVolume3\Windows\System32\svchost.exe [DcomLaunch] [SYSTEM] 7929 4882 0 0 0 0 0 3047
    \Device\HarddiskVolume3\Windows\System32\svchost.exe [NetworkService] [NETWORK SERVICE] 6868 2901 0 0 0 1337 0 2630
    Microsoft.WindowsStore_2016.29.13.0_x64__8wekyb3d8bbwe [username] 4927 2678 0 0 0 273 0 1976
    \Device\HarddiskVolume3\Windows\servicing\TrustedInstaller.exe [SYSTEM] 4847 2941 0 0 0 0 0 1906
    \Device\HarddiskVolume3\Windows\System32\svchost.exe [LocalServiceNetworkRestricted] [LOCAL SERVICE] 4813 3003 0 0 0 0 0 1810
    \Device\HarddiskVolume3\Windows\System32\svchost.exe [appmodel] [SYSTEM] 3801 2280 0 0 0 0 0 1521
    \Device\HarddiskVolume3\Windows\System32\lsass.exe [SYSTEM] 3699 2254 0 0 0 0 0 1445

    I am really angry that now it is 6 months after the launch of Surface Pro 4, and we still could not get a computer that can sleep whenever it should sleep!

    This is definitely the worst PC I have ever owned!

    All firmware and drivers are the newest.

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