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Derek_huang's avatar
Derek_huang
Copper Contributor
Sep 11, 2023

AX201 bluetooth drain power when sleep in Windows 11

my notebook only supports S0 modern standby mode but everytime in sleep mode the bluetooth device drain too much power.is there any workaround?

  • i tried to fresh install the latest Windows 11 Pro 23H2 today and seems that the problem is gone:)
  • nanogy7's avatar
    nanogy7
    Copper Contributor
    Derek what kind of bluetooth device is this? It seems to me like a simple idle process which also looks like its using 99% of your cpu but its just the opposite. You got your work cut out for your though since it is a notebook so ask yourself does this notebook run significantly longer without this bluetooth device plugged in. After I get that nailed down we should have no problem I am definitely not gonna let you loose sleep over a bluetooth situation thats not how we build around here my friend.
    • Derek_huang's avatar
      Derek_huang
      Copper Contributor

      It's the Bluetooth Radio which is a part of Intel AX201 card.and I just wonder why it consumes so much battery power when the notebook get into modern standby sleep(10% in around 2.5 hours and even drain the battery to death).As i understand the bluetooth devices should be in sleep mode also when the notebook into sleep however it drains the battery power all the time.And if i disable the Bluetooth Radio and get the notebook into sleep mode then only 10%-12% each 24 hours will be consumed which is much reasonable.

      • nanogy7's avatar
        nanogy7
        Copper Contributor
        Im tracking now Derek. You seem familiar enough where i can make this short. Run Device Manager find your intel AX201 card that is in bed with the Bluetooth radio right click it then click properties and the far right tab is power managment which should give you two options. 1. let the computer turn the HID off when not in use or 2. allow the device to wake the computer. If you dont see this option "highly unlikely you wont" then qualify your situation with a few more questions so I can driil down to the root of what we will soon find not to be an issue at all. I like that you have done your research you can tell it in your post.
  • Thanks for sharing, in device manager, find the device in question and right click --> properties --> there should be a option in the menus somewhere to uncheck "let this device wake up computer".
    • Derek_huang's avatar
      Derek_huang
      Copper Contributor

      No matter check or uncheck this option it still drain the power when modern standby sleep.The only solution I can find is to shut down the Bluetooth adapter before sleep Deleted 

      • Deleted's avatar
        Deleted
        Oh, is this a Microsoft Adaptor?

        This seems more of a issue on the OEM side.

  • Isn't there a way to turn off "modern standby"?
    • Derek_huang's avatar
      Derek_huang
      Copper Contributor
      i tried to turn it off and return to the old S3 sleep mode then my notebook got blue screen of death issues from time to time.i think the BIOS from OEM manufacturer support modern standby(S0) only.
  • Derek_huang's avatar
    Derek_huang
    Copper Contributor
    i tried to fresh install the latest Windows 11 Pro 23H2 today and seems that the problem is gone:)

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