Failed to be awake for recording - why?

[Graham]

I wonder if I could put this into the System plugin? Not to block the user if they try to shutdown, but just to inhibit the timed sleep if it occurs in those few minutes before the recording starts

The general consensus seems to be that the Windows sleep mechanism is flawed in this context. If you do something in a plugin, why try and "mend" the broken Windows sleeps mechanism. Why not write your own algorithm to determine if now is a good time to sleep and if it is send it to sleep and if not not come back in five? minutes and run the algorithm again.

And another thing, I have the NextPVR screensaver set to come on and this stops the computer from going to sleep so I close NextPVR when I want the machine to send itself to sleep.

[Lao Pan]

That would be useful - also if you could incorporate PBS's Awaymode shutdown protector - for after the recording starts - it would be even better
I have had a search but the file seams to have disappeared from the forum - I am still using it on my machine (Windows 8) - but haven't tested if it still inhibits shutdown.

Obviously System Plugin knows how long to the next recording - it asks you if you are there - so you are some of the way to this.

Oh and epg updates as well while you are at it

[gEd]

Why not write your own algorithm to determine if now is a good time to sleep and if it is send it to sleep and if not not come back in five? minutes and run the algorithm again.

It would be difficult to accurately detect non-NPVR activity (such as listening to music or watching videos across the LAN in VLC).

Isn't the answer (as already stated) for Sub to get NRecord to inform windows to stay awake when within <Keepawakewindow> minutes of a scheduled recording using this api

http://msdn.microsoft.com/en-us/library/...85%29.aspx
Enables an application to inform the system that it is in use, thereby preventing the system from entering sleep or turning off the display while the application is running.

[sub]

Isn't the answer (as already stated) for Sub to get NRecord to inform windows to stay awake when within <Keepawakewindow> minutes of a scheduled recording using this api

It's already supposed to do this. I've been trying to find time to work out why it's not happening.

[mvallevand]

I wonder if I could put this into the System plugin? Not to block the user if they try to shutdown, but just to inhibit the timed sleep if it occurs in those few minutes before the recording starts.

Iain

Not much help if you are running a backend with NextPVR not running.

Martin

[johnsonx42]

Isn't the answer (as already stated) for Sub to get NRecord to inform windows to stay awake when within <Keepawakewindow> minutes of a scheduled recording using this api

It's already supposed to do this. I've been trying to find time to work out why it's not happening.

I was always under the impression that NRecord didn't start asserting the "in use" api until the recording actually started. Hence why I was advocating for a second wakeup request at the actual recording time as being a good failsafe.

[sub]

It's supposed to start asking the machine to stay awake <WakeupPreRecordingSeconds> seconds before the recording is due to start, and logging "Keeping machine from entering standby due to pending recording" at the time.

[mvallevand]

If the machine doesn't hit the "Resuming" code because it was already awake, maybe that logic isn't triggered? I just set up a recording for 11:00 with 3 minutes of padding and I don't see any logged messages

Code:

2013-03-11 22:55:18.656    [DEBUG][7]    Requesting wake up for 'RecordingOID2970' at 11/03/2013 10:55 PM
2013-03-11 22:55:18.656    [DEBUG][7]    Requesting wake up for 'RecordingOID2967' at 13/03/2013 9:56 PM
2013-03-11 22:55:18.656    [DEBUG][7]    Requesting wake up for 'RecordingOID2968' at 20/03/2013 9:56 PM
2013-03-11 22:57:00.097    [DEBUG][7]    allocating recording target filename: C:\movies\CBC News Ottawa Late Night\CBC News Ottawa Late Night_20130311_23002330.ts
2013-03-11 22:57:00.097    [DEBUG][7]    About to start recording (2970 on 1526): C:\movies\CBC News Ottawa Late Night\CBC News Ottawa Late Night_20130311_23002330.ts...
2013-03-11 22:57:00.097    [DEBUG][7]    Free space 32710569984  (C:\)
2013-03-11 22:57:00.098    [DEBUG][7]    Asking NDigitalHost to start: C:\movies\CBC News Ottawa Late Night\CBC News Ottawa Late Night_20130311_23002330.ts
2013-03-11 22:57:01.446    [DEBUG][7]    Temp at 11/03/2013 10:57:11 PM
2013-03-11 22:57:01.446    [DEBUG][7]    Started recording (2970:3:C:\movies\CBC News Ottawa Late Night\CBC News Ottawa Late Night_20130311_23002330.ts)

Martin

[imilne]

Not much help if you are running a backend with NextPVR not running.

No, but there's plenty of us who don't use it that way

It's a moot point anyway if NPVR is supposed to be doing it. Far better to spend time helping sub debug it than hacking in a half-baked solution to the plugin.

Iain

[jcjefferies]

It's supposed to start asking the machine to stay awake <WakeupPreRecordingSeconds> seconds before the recording is due to start, and logging "Keeping machine from entering standby due to pending recording" at the time.

Is the problem that Windows can sleep just before <WakeupPreRecordingSeconds>. My server has 3 minutes pre padding so Wake happened 5 minutes before the actual start of the programme. Would starting "Stay Awake" say 10 minutes before the actual programme start cure the problem. Then even if even if the computer Sleeps seconds before "Stay Awake" starts it will be in a state to see the "Wake" several minutes later.