Standby/Sleep During Playback

[fla]

Here's the pwrtest output matching these actions:

22:29 Start playing
22:31  no more mouse movements on server
22:46 ping timeout & playback freezes
22:48 manual wol
22:48:27 ping ok & playback resumes

PS.
Unhid the unattended sleep mode and set it to zero (it was 10). My hibernate delay is 15 min and the powercfg /sleepstudy says that the "Remaining sleep timeout source" is "Hibernate Timeout". Hibernate indeed happens 15 min after stopping any server mouse activity.

[mvallevand]

You need to research ES_SYSTEM_REQUIRED and see why it isn't working on your system.

Martin

[fla]

My NextPVR server is Windows 11 and resetting the system idle timer with ES_SYSTEM_REQUIRED on Windows 11 fails:

But this does not work anymore on Windows 11

But in Windows 11, that doesn't work anymore

This powershell script that keeps windows from sleeping works on Windows 10 but not on Windows 11. I set my system to sleep after one minute to test.

Code:

$passlen = 1 # seconds between passes
$passNum = 0
$maxpass = 240 # after this number of passes, timer reset is skipped
$skipstr = ""

while ($true)
{
    $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
    $ES_CONTINUOUS = [uint32]"0x80000000" #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_AWAYMODE_REQUIRED = [uint32]"0x00000040" #Requests Away Mode to be enabled.
    $ES_DISPLAY_REQUIRED = [uint32]"0x00000002" #Requests display availability (display idle timeout is prevented).
    $ES_SYSTEM_REQUIRED = [uint32]"0x00000001" #Requests system availability (sleep idle timeout is prevented).

    Switch ($option)
    {
      "Away" {$setting = $ES_AWAYMODE_REQUIRED}
      "Display" {$setting = $ES_DISPLAY_REQUIRED}
      "System" {$setting = $ES_SYSTEM_REQUIRED}
      Default {$setting = $ES_SYSTEM_REQUIRED}
    }

    if ( $passNum -lt $maxpass )
    {
        #$ste::SetThreadExecutionState($ES_SYSTEM_REQUIRED -bor $ES_DISPLAY_REQUIRED) # success
        $ste::SetThreadExecutionState($ES_SYSTEM_REQUIRED) # Win10 success, Win11 Fail

        $ste::SetThreadExecutionState($ES_CONTINUOUS)
    }
    elseif ( $passNum -eq $maxpass )
    {
        $skipstr = "(skipped)"
    }
    $passNum += 1
    Write-Host "Reset timer: pass #"$passNum time ($passNum * $passlen) seconds $skipstr
    Start-Sleep -Seconds $passlen;
}

Resetting the display idle timer (commented out) works on Windows 11 too but the screen stays on.

[mvallevand]

I read your link and it appears it works when it is on a timer like sub designed.

Martin.

[fla]

I failed to give you credit but the stackoverflow link was from your post. The WinSCP author answered his own question. He had to use the ES_CONTINUOUS API as in the Example in the learn.microsoft.com link also from your same post.

If sub used the ES_CONTINUOUS API during playback then we could see the persistent active power requests with powercfg /requests instead of requiring pwrtest.exe for transient things.

Resetting the system idle timer can be done willy-nilly by many threads. The ES_CONTINUOUS API requires clearing the EXECUTION_STATE flags when we're done which makes things much more complicated in a multi-threaded scenario. He used a separate thread to create the single continuous power request on the first thread's power request and cancels it after a 5 second timer expires. Each time any thread needs new/continued power, it's request causes the 5 second timer, if still active, to start over delaying the single power request's cancellation.

The powershell script above resets the system idle timer every 1 sec (observable with pwrtest.exe) kind of like sub's one minute timer during playback and that works great on Win10 but fails on Win11.