Author Posts

August 2, 2017 at 1:29 pm

To change the power settings on a remote computer to never sleep I run the below commands. I would like to be able to Get and Set the standby timeout and hibernate timeout values. I decided to dig into the CIM namespace ROOT\cimv2\power. I'm not having any luck with finding a solution to using CIM to Get and Set these values. The reason I want to report (Get) the standby and hibernate values is so I know if I have to Set them or not.

Is there a CIM way to do the below and also report on the settings?

Invoke-Command -ComputerName $ComputerName -ScriptBlock {C:\Windows\system32\powercfg.exe -change -standby-timeout-ac 0}
Invoke-Command -ComputerName $ComputerName -ScriptBlock {C:\Windows\system32\powercfg.exe -change -hibernate-timeout-ac 0}

August 2, 2017 at 1:32 pm

I'd thought you could only deal with Power Plans (https://blogs.technet.microsoft.com/heyscriptingguy/2012/11/27/use-powershell-and-wmi-or-cim-to-view-and-to-set-power-plans/), not individual settings. Microsoft kind of made a push for not managing individual settings, but instead bundling them into Plans. That's how the GUI deals with them.

August 2, 2017 at 1:46 pm

I remember digging into this when I wrote PowerShell and WMI and you have to work at the plan level

August 2, 2017 at 2:08 pm

I read that scripting guy article. I see how you can change the power plan. So I would want to change the power plan to high performance to achieve the same result? Except it would be whatever custom settings are configured behind those plans, right.

August 2, 2017 at 3:07 pm

You can narrow it down a bit like this using aliases:

powercfg /query sub_balanced sub_sleep standbyidle
powercfg /query sub_balanced sub_sleep hibernateidle

There might be a powershell module that just runs powercfg.

August 2, 2017 at 8:18 pm

scheme_balanced not sub_balanced

C:\>powercfg /query scheme_balanced sub_sleep standbyidle
Power Scheme GUID: 381b4222-f694-41f0-9685-ff5bb260df2e  (Balanced)
  GUID Alias: SCHEME_BALANCED
  Subgroup GUID: 238c9fa8-0aad-41ed-83f4-97be242c8f20  (Sleep)
    GUID Alias: SUB_SLEEP
    Power Setting GUID: 29f6c1db-86da-48c5-9fdb-f2b67b1f44da  (Sleep after)
      GUID Alias: STANDBYIDLE
      Minimum Possible Setting: 0x00000000
      Maximum Possible Setting: 0xffffffff
      Possible Settings increment: 0x00000001
      Possible Settings units: Seconds
    Current AC Power Setting Index: 0x00000000
    Current DC Power Setting Index: 0x00000384


C:\>powercfg /query scheme_balanced sub_sleep hibernateidle
Power Scheme GUID: 381b4222-f694-41f0-9685-ff5bb260df2e  (Balanced)
  GUID Alias: SCHEME_BALANCED
  Subgroup GUID: 238c9fa8-0aad-41ed-83f4-97be242c8f20  (Sleep)
    GUID Alias: SUB_SLEEP
    Power Setting GUID: 9d7815a6-7ee4-497e-8888-515a05f02364  (Hibernate after)
      GUID Alias: HIBERNATEIDLE
      Minimum Possible Setting: 0x00000000
      Maximum Possible Setting: 0xffffffff
      Possible Settings increment: 0x00000001
      Possible Settings units: Seconds
    Current AC Power Setting Index: 0x00000000
    Current DC Power Setting Index: 0x00000000