When on battery, severe CPU throttling kicks in at 35% charge: how to change ?

Anonymous
2019-12-19T16:39:57+00:00

Brand new Spro7, Firmware up-to-date.

I noticed drastic CPU throttling when battery charge level reaches 35%: CPU tops at about 0.5 GHz and setting the power slide to "Best Performance" doesn't change that.

I found no setting that would allow to change this excessively conservative threshold to something more reasonable like 12 or 15% (my Battery Saver level is set at 15%, but it has obviously no impact on this).

Is this hard-coded in the firmware ?

Any ideas ?

Surface | Surface Pro | Power and battery

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  1. Anonymous
    2020-06-10T14:16:26+00:00

    My SP7 just started downloading new versions of firmware.

    Surface - Firmware - 8.123.140.0 (Surface UEFI)

    Surface - Firmware - 13.0.1319.2 (Surface ME)

    Nothing on the update pages though to show what's changed....

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  2. Anonymous
    2020-05-30T15:35:48+00:00

    In this case the only "real solution" (at least for now) would be to return the device and to buy something else, but in my case, it is unfortunately too late...

    funny, I just replaced my previous SP4 with this SP7 because of....unsolved battery issues (battery drain when unit turned off) !!!

    Looks like batteries are Achilles' heels for the Surface !

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  3. Anonymous
    2020-05-30T09:49:17+00:00

    I am running version 2004 for some time and unfortunately, it is the same... 

    I wouldn't be surprised if all the devices would be impacted (as even i7 version with active cooling seem to be affected as well). 

    In this case the only "real solution" (at least for now) would be to return the device and to buy something else, but in my case, it is unfortunately too late...

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  4. Anonymous
    2020-05-29T19:09:13+00:00

    Same here... But do you want to see something extremely funny (and at the same time sad)? 

    Look at that:

    What a joke...

    That's from firmware update page: https://support.microsoft.com/en-us/help/4526363/surface-pro-7-update-history

    That's just sad...

    My SP7 is under support, so logged a case with MS support. About 2 hrs of chat, the engineer on the laptop via logmein. Could see the device throttling at 35%. He asked when things started, i stated around Dec last year after the firmware update. He suggested waiting to see if the Windows 10 2004 May update “fixes” the issue. Although he kept saying also to get the device replaced under support (although i’ve read i’d receive a refurb unit) - i’m more or less convinced a replacement unit would either come with the borked updates or apply them soon after coming online - net result is the same - likely back to the same situation. Anyone else contacted support?

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  5. Anonymous
    2020-05-29T18:23:59+00:00

    Same here... But do you want to see something extremely funny (and at the same time sad)? 

    Look at that:

    What a joke...

    That's from firmware update page: https://support.microsoft.com/en-us/help/4526363/surface-pro-7-update-history

    That's just sad...

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