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48 Posts

10-11-2020

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  • Message 1 of 6

s3 (from windows) battery drain of a t14_amd_gen1 is 2x worse than an old intel edge e420

2021-06-22, 4:42 AM
  • there's a thread about this from the linux perspective, however it has been going in circles for 10 months, has not been definitively acknowledged and @MarkRHPearson said he won't be trying it in windows
  • so this thread is for s3 from win10
  • t14 has twice the ram (32 vs 16) but it still seems it shouldn't be that much worse
  • I will try to provide precise directions so this can be easily reproduced, acknowledged and passed to engineering for review
  • using BatteryInfoView from NirSoft which logs the current capacity in mwh and % on suspend and resume
  • t14
    • win10 21h1 x64
    • relevant bios settings
      • version 1.32
      • s3 (linux sleep) on
      • always on usb off
      • lid sensor on
    • 32gb ram
  • e420
    • win7 sp1 x64
    • relevant bios settings
      • version 1.26
      • s3 is the only sleep it does
      • always on usb is off
    • 16gb ram
  • directions
    • run BatteryInfoView
    • switch to battery log view
    • suspend via the windows ui, keep lid open
    • wait 1 hr
    • wake with the power button
    • results will be in the log view
  • results
    • t14
      • ==================================================
        Event Time        : 6/21/2021 10:15:52 PM
        Power State       : Discharging
        % Capacity        : 44.0%
        Capacity Value    : 22,630
        Rate              : -6525
        Voltage           : 11,271
        Event Type        : Computer Suspended
        ==================================================

        ==================================================
        Event Time        : 6/21/2021 11:16:02 PM
        Power State       : Discharging
        % Capacity        : 41.8%
        Capacity Value    : 21,540
        Rate              : -1192
        Voltage           : 10,937
        Event Type        : Computer Resumed
        ==================================================

      • drain: 1090 mwh, 2.2%
    • e420
      • ==================================================
        Event Time        : 6/20/2021 5:01:53 AM
        Power State       : Discharging
        % Capacity        : 54.3%
        Capacity Value    : 24,740
        Rate              : -6852
        Voltage           : 10,792
        Event Type        : Computer Suspended
        ==================================================

        ==================================================
        Event Time        : 6/20/2021 6:01:55 AM
        Power State       : Discharging
        % Capacity        : 53.1%
        Capacity Value    : 24,210
        Rate              : -480
        Voltage           : 10,931
        Event Type        : Computer Resumed
        ==================================================

      • drain: 530 mwh, 1.2%
  • @someotherguy please try to repro
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7204 Posts

10-29-2009

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  • Message 2 of 6

Re:s3 (from windows) battery drain of a t14_amd_gen1 is 2x worse than an old intel edge e420

2021-06-22, 12:02 PM
  • win10 21h1 x64
    • s3 (linux sleep) on

I'm sorry to tell you that this is not something that I can support.

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48 Posts

10-11-2020

United States of America

47 Signins

445 Page Views

  • Posts: 48
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  • Message 3 of 6

Re:s3 (from windows) battery drain of a t14_amd_gen1 is 2x worse than an old intel edge e420

2021-06-22, 14:10 PM

@ someotherguy wrote:

  • win10 21h1 x64
    • s3 (linux sleep) on

I' sorry to tell you that this is not something that I can support.

 

Why not? The machine supports S3. 

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7204 Posts

10-29-2009

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  • Message 4 of 6

Re:s3 (from windows) battery drain of a t14_amd_gen1 is 2x worse than an old intel edge e420

2021-06-22, 18:37 PM

You tagged me for some reason, asking me to test linux sleep state on Windows.  and I'm telling you this is not something I can support.  You are welcome to ask the community for help, but when you tag me asking for help, I will reply whether I'm able to help or not.  And in this case, I'm not able to.  

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48 Posts

10-11-2020

United States of America

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  • Posts: 48
  • Registered: ‎10-11-2020
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  • Message 5 of 6

Re:s3 (from windows) battery drain of a t14_amd_gen1 is 2x worse than an old intel edge e420

2021-06-22, 18:53 PM

@ someotherguy wrote:

You tagged me for some reason, asking me to test linux sleep state on Windows.  and I' telling you this is not something I can support.  You are welcome to ask the community for help, but when you tag me asking for help, I will reply whether I' able to help or not.  And in this case, I' not able to.  

 

You keep calling it "linux sleep" as if it's somehow alien to windows, it's not, it's called S3, and windows supports it just fine.

 

I am reporting a problem with it, excessive drain. The "community" already knows about it, and certainly cannot fix it. We need a Lenovo employee to repro it confirm and show it to engineering. The directions are not complicated, you've reproduced problems in the past which is why I tagged you, so why not this one? And if not you that who can repro this and move it forward?

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48 Posts

10-11-2020

United States of America

47 Signins

445 Page Views

  • Posts: 48
  • Registered: ‎10-11-2020
  • Location: United States of America
  • Views: 445
  • Message 6 of 6

Re:s3 (from windows) battery drain of a t14_amd_gen1 is 2x worse than an old intel edge e420

2021-06-22, 20:17 PM

@someotherguy S3 drain of 1090 mwh, 2.2% per hour is not acceptable. The original linux thread about this is 10 months old, now you are saying you won't help, what is going on here? This is not os specific, the os is not running in S3, cpu should be off. Why is a major problem being ignored? You know that your official support is useless, I've tried them once which went nowhere. The only way this will get addressed is if you (or someone else from lenovo here) reproduce this and shepherds it to a fix.

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