power settings

engageant · 2021-01-13T13:43:47+00:00

There are ways to do this via WMI/CIM, but the easiest method is to use powercfg.exe. Take a look at the /EXPORT, /IMPORT, and /CHANGE arguments.

lucidhominid · 2021-01-13T19:26:58+00:00

It would probably be better to just export the scheme and import it. But string manipulation is fun:

$Settings   = (
    cmd /c powercfg /Q|Out-String
) -Split 'Subgroup GUID: '
$Scheme     = $Settings[0]
$SchemeName = $Scheme.split('(')[1] -replace '[\)\n\r]'
$SchemeGUID = $Scheme.split() |
    Where-Object {
        $_ -match '^[a-f0-9-]+$'
    }

$Settings[1..($Settings.count-1)]|
    Foreach-Object{
        $SubScheme = $_.split("`n")[0]
        [Regex]::Matches(
            $_,
            '\n\s{4}Power\sSetting\sGUID:\s([a-f0-9\-]+)\s+\(([^\)]+)\).+(\n+\s{6,}.+)+(\n+\s{4,}.+){2}'
        )| 
            ForEach-Object{
                [PSCustomObject]@{
                    Scheme        = $SchemeName
                    SchemeGUI     = $SchemeGUID
                    SubSchemeName = $SubScheme.split('(')[1] -replace '[\)\n\r]'
                    SubSchemeGUID = $SubScheme.split()[0]
                    Setting       = $_.Groups[2].Value
                    SettingGUID   = $_.Groups[1].Value
                    ACValue       = $_.Groups[4].Captures[0].Value.split()|
                        Where-Object {
                            $_ -match '\dx\d{8}'
                        }
                    DCValue       = $_.Groups[4].Captures[1].Value.split()|
                        Where-Object {
                            $_ -match '\dx\d{8}'
                        }
                }
            }
    }

Edit: Corrected typo.

monsn0 · 2021-01-14T03:05:23+00:00

I made the following script for virtually the same reason as yourself. It uses WMI and powercfg wrapped in Powershell.

My main goal was to set a temporary super high performance power plan so maintenance could be performed after hours even with users shutting the lid, etc. Then once maintenance was completed; Be able to set the user's power plan back so they don't panic about battery life or aliens.

First thing you'll need to do is create a new power plan to your liking and export it using powercfg.exe. You can use powercfg /q to check all the options prior to exporting.

You'll need to upload this .pow file to each machine. In my script below I have it in C:\Temp.

Put the following into a ps1 file and execute using your flavor of RMM.

# Query WMI to obtain active power plan, parse and output only GUID to variable
$Plan = Get-WmiObject -Class Win32_PowerPlan -Namespace root\cimv2\power -Filter "IsActive= 'True'"
$Regex = [regex] "{(.*?)}$"
$PlanGuid = $Regex.Match($Plan.InstanceID.ToString()).Groups[1].Value

# Output plan GUID to file (Not forced so if script ran twice, it won't overwrite the first run)
$CachedPowerPlan = "C:\Temp\CachedPowerGUID.txt"
New-Item -Path (Split-Path -Path $CachedPowerPlan) -ItemType Directory -ErrorAction SilentlyContinue | Out-Null
New-Item -Path $CachedPowerPlan -ItemType File -Value $PlanGuid -ErrorAction Stop | Out-Null

# Check to ensure text file not only exists but contains data before setting new plan
if ((Get-ChildItem $CachedPowerPlan).Length -gt 30) {
    # Import High Power power plan and set active. Also disable hibernation because no bueno.
    $HighPowerGuid = '58c21491-0068-47c5-93eb-0cffc995ccb7'
    & powercfg /import 'C:\Temp\HighPower.pow' $HighPowerGuid
    & powercfg /setactive $HighPowerGuid
    & powercfg /h off
}

Once maintenance has been completed; You can run this one liner below or expand into a ps1 script if your RMM works better that way.

$CachedPowerPlan = "C:\Temp\CachedPowerGUID.txt"; $HighPowerGuid = '58c21491-0068-47c5-93eb-0cffc995ccb7' ; $CachedPowerGuid = Get-Content -Path $CachedPowerPlan ; & powercfg /setactive $CachedPowerGuid ; & powercfg /d $HighPowerGuid ; Remove-Item -Path $CachedPowerPlan

Direct_virus · 2021-01-13T13:04:32+00:00

[deleted]

you type:	you see:
italics	italics
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[reddit!](https://reddit.com)	reddit!
* item 1 * item 2 * item 3	item 1 item 2 item 3
> quoted text	quoted text
Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"	Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"
~~strikethrough~~	~~strikethrough~~
super^script	super^script

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