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Keep Windows Awake Temporarily (Prevent Sleep, Display Off or Away Mode) #cli #powershell #windows
#!/usr/bin/env powershell
# This script can keep the computer awake while executing another executable, or
# if no executable was passed in, then it stays awake until this script stops.
# There are 3 different ways of staying awake:
# Away Mode - Enable away mode (https://blogs.msdn.microsoft.com/david_fleischman/2005/10/21/what-does-away-mode-do-anyway/)
# Display Mode - Keep the display on and don't go to sleep or hibernation
# System Mode - Don't go to sleep or hibernation
# The default mode is the System Mode.
# Away mode is only available when away mode is enabled in the advanced power options.
# These commands are advisory, the option to allow programs to request to disable
# sleep or display off is in advanced power options.
# The above options will need to be first enabled in the registry before you can
# see them in the advanced power options.
# An alternative to this script is using presentation mode, but this is more flexible.
param (
[string]$Executable = $null,
[ValidateSet('Away', 'Display', 'System')]$Option = 'System'
)
$Code=@'
[DllImport("kernel32.dll", CharSet = CharSet.Auto,SetLastError = true)]
public static extern void SetThreadExecutionState(uint esFlags);
'@
$ste = Add-Type -memberDefinition $Code -name System -namespace Win32 -passThru
# Requests that the other EXECUTION_STATE flags set remain in effect until
# SetThreadExecutionState is called again with the ES_CONTINUOUS flag set and
# one of the other EXECUTION_STATE flags cleared.
$ES_CONTINUOUS = [uint32]"0x80000000"
$ES_AWAYMODE_REQUIRED = [uint32]"0x00000040"
$ES_DISPLAY_REQUIRED = [uint32]"0x00000002"
$ES_SYSTEM_REQUIRED = [uint32]"0x00000001"
Switch ($Option) {
"Away" {$Setting = $ES_AWAYMODE_REQUIRED}
"Display" {$Setting = $ES_DISPLAY_REQUIRED}
"System" {$Setting = $ES_SYSTEM_REQUIRED}
}
try {
Write-Host "Staying Awake with ``${Option}`` Option"
$ste::SetThreadExecutionState($ES_CONTINUOUS -bor $Setting)
if ($Executable) {
Write-Host "Executing Executable"
& "$Executable"
} else {
Read-Host "Enter or Exit to Stop Staying Awake"
}
} finally {
Write-Host "Stopping Staying Awake"
$ste::SetThreadExecutionState($ES_CONTINUOUS)
}
@curtisalexander

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curtisalexander commented Jun 1, 2019

@CMCDragonkai - what is the license for this script? I would like to fork and make some minor changes to then host in a separate repo and want to make sure I am crediting you as well as respecting your intent with the license. Thanks.

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Owner Author

CMCDragonkai commented Jun 1, 2019

Consider it APL-2.0

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curtisalexander commented Jun 2, 2019

Thank you!

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ghost commented Jun 30, 2019

"$ES_DISPLAY_REQUIRED" is not working. Monitor still goes to sleep. I think it must be called periodically.

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ghost commented Jun 30, 2019

Seems that when done like this then it will keep the monitor awake

$ste::SetThreadExecutionState($ES_SYSTEM_REQUIRED -bor $ES_DISPLAY_REQUIRED -bor $ES_CONTINUOUS )

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