Window keeps waking up laptop from Modern Standby

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  1. Posts : 1,658
    Windows 10 Pro 21H1 19043.928
       #11

    hdmi said:
    @W10 Tweaker

    My laptop is on AC power a lot, but I'm pretty sure it doesn't drain the battery that fast during S3 sleep. Either way, I'll check again soon enough and report back. Thanks for letting me know.

    You're most welcome and thanks, I'm definitely interested to know your results.

    I experimented with S3 Sleep by reducing the # of open apps and shutting off network services etc. During all of my tests, the battery SOC decayed at the same rate, about 1.5-2.5%/hour.

    If I had confirmation that S3 Sleep (from a laptop battery perspective) was fixed in a more recently released OS, I might even upgrade.
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  2. hdmi's Avatar
    Posts : 561
    10 Home (21H1)
    Thread Starter
       #12

    @W10 Tweaker

    Plugged into my laptop's USB 3.0 ports were my Logitech Unifying antenna and my Uni 3-port USB 3.0 hub (with an ethernet cable plugged into this hub's ethernet port). I put the laptop in S3 sleep with the battery at 99% before I unplugged the power cord, and, after 7 hours 50 minutes, the battery was at 56% so ~5.49%/hour...
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  3. Posts : 1,658
    Windows 10 Pro 21H1 19043.928
       #13

    hdmi said:
    @W10 Tweaker

    Plugged into my laptop's USB 3.0 ports were my Logitech Unifying antenna and my Uni 3-port USB 3.0 hub (with an ethernet cable plugged into this hub's ethernet port). I put the laptop in S3 sleep with the battery at 99% before I unplugged the power cord, and, after 7 hours 50 minutes, the battery was at 56% so ~5.49%/hour...
    Thanks for reporting those details. I wish your results were different, and that upgrading would have been a suitable fix for S3.

    I should start a new thread when I have something useful to report, I'm exploring various Command Line solutions.
    I'll leave you with one more tidbit.

    I used Win X to shutdown and compared the rate of battery discharge to using a Command Line shutdown (shutdown /s /f /t 0) and guess what? They're hugely different.

    Win X (GUI) shutdown -9.2% drop after 21 hours.
    Command Line shutdown -0.5% drop after 19.5 hours.

    So far, from what I've found to date, the only method to protect a laptop battery from excessive exercise and likely a pre-mature failure is to use a Command Line shutdown or use the first release version of 2004 or an earlier OS.

    This confirms (at least on this MSI laptop winver 2004) that both S3 Sleep and any GUI triggered shutdown has changed. :-(
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  4. hdmi's Avatar
    Posts : 561
    10 Home (21H1)
    Thread Starter
       #14

    @W10 Tweaker

    Thanks again for letting me know these details. I'll run a few more tests later to see if the CLI method helps with the power consumption, and to learn about the consistencies. My laptop's battery has a fairly limited capacity rating, but if it's losing almost five and a half percent an hour during S3 sleep, then yeah, it looks like ol'e Mickeysoft is on a roll with screwing stuff up again. (Not that there ever used to be a time when they weren't on a roll with that, but anyway.)
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  5. Try3's Avatar
    Posts : 9,195
    Windows 10 Home x64 Version 21H2 Build 19044.1237
       #15

    W10 Tweaker said:
    I used Win X to shutdown and compared the rate of battery discharge to using a Command Line shutdown (shutdown /s /f /t 0) and guess what? They're hugely different.
    Win X (GUI) shutdown -9.2% drop after 21 hours.
    Command Line shutdown -0.5% drop after 19.5 hours.
    So far, from what I've found to date, the only method to protect a laptop battery from excessive exercise and likely a pre-mature failure is to use a Command Line shutdown or use the first release version of 2004 or an earlier OS.
    This confirms (at least on this MSI laptop winver 2004) that both S3 Sleep and any GUI triggered shutdown has changed. :-(
    I ran some tests of battery discharge after shutdown.
    - In each test,
    1 I waited until the battery was shown as 100% in the SysTray, then
    2 I shut it down & pulled out the power cable, then
    3 waited for the test period, then
    4 turned the computer back on, then
    5 read the battery SysTray reading as soon as the computer reached its Desktop [using netplwiz automatic login].
    - I had intended to run the full set of:
    1 Shutdown through Start button, Power, Shutdown
    2 Shutdown through command line - shutdown.exe /s /t 0 /f
    - I had intended to think through uncertainties in the results quite carefully: Recording the time, Reading the current charge state. I had also intended to consider the current battery state [Last full charge / Design capacity] so that results now could be compared to results next year.

    The test computer was a Dell Inspiron 1545 [from 2010, so it does not even know how to spell S0] on Windows 10 Home x64 Version 21H1 Build 19043.1110. Its battery manages about 80% of its Design capacity so battery deterioration should not affect the results.

    Test 1.1 - 6 hours, battery went from 100% to 95%
    Test 1.2 - 8 hours, battery went from 100% to 94%
    At this stage I already wondered if lack of the accuracy in the SysTray indicator might mean that these two results were essentially the same and that both represented nothing more than the power used up by starting the computer.
    Test 1.3 - 21 hours, battery went from 100% to 98%

    I concluded that, since there is definitely power used up during the start-up, if there is any power drain during shutdown its value is so small as to be swamped by the start-up power usage [that might itself be variable] & obscured by inaccuracy in the SysTray indicator.

    It didn't seem worthwhile doing the command line tests.

    Our experiences in this respect are significantly different. I don't know what the reason might be.

    All the best,
    Denis
      My Computer


  6. Posts : 1,658
    Windows 10 Pro 21H1 19043.928
       #16

    Thanks Denis, those results are most interesting.

    The simple solution is that the Shutdown process doesn't completely shutdown in both 2004 & 20H2 where-as it is behaving in what I would refer to as properly with 21H1. I'm open to hear any other interpretations.

    I would sincerely appreciate if you could repeat your tests using Sleep mode.

    If you obtain a similar success, I'd be motivated to update to 21H1 ASAP.
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  7. Try3's Avatar
    Posts : 9,195
    Windows 10 Home x64 Version 21H2 Build 19044.1237
       #17

    W10 Tweaker said:
    I would sincerely appreciate if you could repeat your tests using Sleep mode.
    W10 Tweaker said:
    I experimented with S3 Sleep by reducing the # of open apps and shutting off network services etc. During all of my tests, the battery SOC decayed at the same rate, about 1.5-2.5%/hour.
    Yes, I'll do that.

    W10 Tweaker said:
    If you obtain a similar success, I'd be motivated to update to 21H1 ASAP.
    W10 Tweaker said:
    If I had confirmation that S3 Sleep (from a laptop battery perspective) was fixed in a more recently released OS, I might even upgrade.
    I don't know what you regard as success when it comes to sleep because I got a bit lost in the discussion when S0 was mentioned. I think, but am not certain, that the computer you are using is one that came with S0 but you have been able to disable S0 and you have been able to enable S3 [presumably confirmed by PowerCfg -a results].

    I'll try to post back with results tomorrow.

    Denis
      My Computer


  8. Posts : 1,658
    Windows 10 Pro 21H1 19043.928
       #18

    Thanks Denis, much appreciated.

    My PC does not have S0, I happily was able to use S3 Sleep without excessive battery decay for past 1.5 years. During a Sleep state the battery state of charge (SOC) would decay at about 5%/day, AFAIR.

    hdmi, has a newer device with S0.

    Since a special M$ pill (Windows Update) sometime last December, the battery SOC during Sleep decays at about 2%+/hour or about 30%/day.

    Also, a Win X (or other GUI-type shutdown) consumes 9.2% over 21 hours versus a Command Line shutdown at 0.5% for 19.5 hours.

    Should you discover that during a Sleep state, your PC's battery SOC decays by 5 or 10%, I'd call that a successful test and would promptly update to 21H1.

    That would yield a battery standby time that's 3-6 times longer than my PC has now and surely extend the life of this battery.
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  9. Posts : 1,658
    Windows 10 Pro 21H1 19043.928
       #19

    hdmi, have you looked in here?

    Window keeps waking up laptop from Modern Standby-0729-intel-management-engine-interface.jpg
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  10. Try3's Avatar
    Posts : 9,195
    Windows 10 Home x64 Version 21H2 Build 19044.1237
       #20

    W10 Tweaker said:
    … I happily was able to use S3 Sleep without excessive battery decay for past 1.5 years. During a Sleep state the battery state of charge (SOC) would decay at about 5%/day, AFAIR.
    When I tested S3 Sleep on the same computer, the results were:
    4 hours, 8% drop 2%/Hour
    15 hours, drop 14% 1%/hour
    This is consistent with a test I did a decade ago when this computer was brand new. The result then was about 2%/hour.
    But do bear in mind my earlier observation that the Battery meter in the SysTray is not necessarily an accurate measurement.

    I also noticed that my main laptop was in S3 Sleep for 5 hours and its charge dropped by 1%. Given that its battery is only charging to 60% of its Design charge, I'd hazard the guess that I would not be able to measure the drop at all on its other, fairly-new battery [they are internally-fitted batteries so I cannot easily swap them to have a try].

    W10 Tweaker said:
    … Should you discover that during a Sleep state, your PC's battery SOC decays by 5 or 10%, I'd call that a successful test and would promptly update to 21H1. ...
    I'd call it a successful test.

    All thee best,
    Denis
      My Computer


 
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