Standby/Sleep During Playback

[fla]

Maybe a diagram will explain better what I'm trying to say.

Code:

Windows Awake--------sleep delay------>SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
           PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!!!PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
NextPVR    [<-----Play channel A---------->]   [<-----Play channel B---------->]

In my diagram, windows will try to put the idle server to sleep after the configured sleep/hibernate time has passed (denoted by 'S'). Luckily NextPVR makes power requests while playing to prevent this from happening (denoted by 'P'). Unfortunately during a channel change there is a window of vulnerability where there is no 'P' (denoted by '!') which allows Windows' ongoing efforts to put the server to sleep to unfortunately succeed.

Notes:

• A fast server appears idle to Windows even while serving live TV to a LAN client.
  
• A keystroke on the server resets the sleep delay to zero giving "sleep delay" more minutes safe from sleep, but a power request clearly doesn't reset the idle timer.
  
• Delaying the "No longer active" power request described previously is an effort to remove the area marked by exclamation marks in the diagram.
  

[mvallevand]

Yes that is what I suspected but what is your unattended Windows sleep mode setting? If you used WOL to wake it and never touch the server that would be in play here.

Martin

[fla]

I unhid the unattended Windows sleep mode setting interface which was set to 2min by default. I set it to 15min just like my hibernate setting (sleep is never). It made no difference. After watching a 30min TV show, the sleep/sleep unattended/hibernate timeout is well expired and Windows jumps at the opportunity in between channels when nothing is asking for power to put the server to sleep.

My suggestion earlier was for the NextPVR service to read the power setting (sleep/sleep unattended/hibernate timeout/whichever) and delay by that amount of time the withdrawal of the power request. If a new power request arrives in the meantime to play channel B, the pending withdrawal of the power request for ending playing channel A is dropped.