NPVR not recording when waking up from standby

[aesn5]

Hi,

I noticed some strange behavior when recording programs:
As long I keep my PC out of standby mode, every recording works like a charm. But when it gets into standby mode, it gets woken up at the right time but nothing is getting recorded. I've added some logs showing that I wanted to record something today at 17:50. At 18:00 I tried to play the part that has already been recorded, but the file was empty (0 Byte), so I cancelled the recording. I already looked at the logs, but couldn't spot any errors. Has anyone an idea why this is happening? Thanks in advance.


Best Regards

aesn5

[sub]

I'm guessing it is something flakey in the drivers for this device that isnt handling power management correctly. I can see some occurrances of the app trying to start a recording but the device fails to lock onto a signal.

2010-10-03 17:50:00.257 [DEBUG][6] About to start recording (859): D:\HTPC\GB-PVR\Recordings\James Bond 007 - Leben und sterben lassen\James Bond 007 - Leben und sterben lassen_20101003_17552015.ts
2010-10-03 17:50:00.257 [INFO][6] DigitalRecorder.StartStream(D:\HTPC\GB-PVR\Recordings\James Bond 007 - Leben und sterben lassen\James Bond 007 - Leben und sterben lassen_20101003_17552015.ts)
2010-10-03 17:50:00.257 [INFO][6] Creating BDA graph
2010-10-03 17:50:00.367 [DEBUG][6] Using tuner TechnoTrend BDA/DVB-C Tuner (1)
2010-10-03 17:50:00.397 [DEBUG][6] About to auto detect capture filter
2010-10-03 17:50:00.407 [DEBUG][6] Got capture filter.
2010-10-03 17:50:00.407 [DEBUG][6] Added capture filter
2010-10-03 17:50:00.407 [DEBUG][6] Connected Tuner to Capture
2010-10-03 17:50:00.467 [DEBUG][6] Graph filter list:
2010-10-03 17:50:00.467 [DEBUG][6] - MPEG-2 Sections and Tables
2010-10-03 17:50:00.467 [DEBUG][6] - BDA MPEG2 Transport Information Filter
2010-10-03 17:50:00.467 [DEBUG][6] - MPEG-2 Demultiplexer
2010-10-03 17:50:00.467 [DEBUG][6] - NPVR TS Mon
2010-10-03 17:50:00.467 [DEBUG][6] - Capture
2010-10-03 17:50:00.467 [DEBUG][6] - Tuner
2010-10-03 17:50:00.467 [DEBUG][6] - Network Provider
2010-10-03 17:50:00.477 [INFO][6] About to start BDA graph
2010-10-03 17:50:00.477 [DEBUG][6] Starting graph...
...
2010-10-03 17:50:01.457 [DEBUG][6] locked=0, present=0, strength=15, quality=10 (took 0ms to check)

[aesn5]

Yes, you could be right. I've been looking through other forums and there really seem to be some issues with the driver for this card. I'll try my other tuner and check whether it's working. Thanks!

EDIT: Both tuner cards are showing this behavior. Whenever I resume from standby and select "Live TV", I'm just seeing a black screen. When I press ESC and select "Live TV" again, suddenly everything suddenly working correctly. It seems that the first "lock" after a resume from standby always fails, but every subsequent one succeeds. I didn't encounter these issues when I used GB-PVR.

[aesn5]

Anyone else having these issues? I really have no idea what to do now.

[Reddwarf]

Anyone else having these issues? I really have no idea what to do now.

Don't let your computer go into standby :p

[sub]

Anyone else having these issues? I really have no idea what to do now.

I've never done it myself, so cant give exact details, but I know some users have had standby problems with devices in the past, and have had batch files run at startup that use the devcon.exe utility to restart their device. Hopefully a forum search will help you find the details of setting this up.

[aesn5]

@Reddwarf: Very funny... ;-)

@sub: Cool, I didn't know the "devcon.exe" utility. I will try it and see, if it helps. Thanks!

[martint123]

Microsofts Devcon is quite versatile. You can ask it to restart a device with the option to reboot your computer if it cannot reset it.
Also look for "hibernate trigger" another bit of software that can run a command at waking from standby/hibernate and also when going to sleep. You need this for devcon as otherwise nothing knows when it comes out of standby.

Other things to try are powersaving options for your tuner device - whether it is powered or not when in standby.

I gave up with standby in the end and went to hibernate - more reliable restarting and doesn't take that much longer to wake up. For me, USB devices (included PCI cards that have USB devices on them!) were the main problem.

[aesn5]

Well, actually I'm already using hibernate but (as already mentioned) GB-PVR didn't have these issues for me. I will try "devcon" and "hibernate trigger". I hope that it helps. Thanks again!

[martint123]

At one point I was using hibernate trigger to run a batch file that ran devcon a number of times to get the status of my capture devices and emailing the results to myself. When the problem was happening, devcon reported a 'fail' status for the device (well it's driver died I think).