Hauppague WinTV Dual HD Tuner Error

[qttor]

I have the latest NPVR version running on Windows 10 version 21H2. I have two Hauppague tuners connected to my PC, a Win-TV HVR-950 and a WinTV-Dual HD. Both are using the latest drivers from Hauppauge. The problem I have is that NPVR is somehow leaving the WinTV-Dual HD tuner active while not actually recording anything (both lights on the tuner are left on - power on and recording). From the attached picture, you can see that NPVR knows the tuner exists, but something (Windows?) has removed it from the Device Manager's sound and video devices.

I checked the Events app and an Error number 1000 is recorded for NPVR. The show that was scheduled to record actually did record, but I think NPVR switched tuners to accomplish that. I tried to save all the NPVR log files while nothing was being recorded per the Backend Status window of the tray app, but two log files were active so 7-Zip may not have saved those properly. 

I really only know when this happens because usually a scheduled recording is missed without prior notification that something is wrong with NPVR or the tuners.  I hope this issue can be addressed. Thanks

[qttor]

If it helps at all, I've attached the Event Viewer info for the .net error event and the Windows Error Reporting event. None of the error report files are available.

[mvallevand]

It looks like a device h/w error. Did you reboot your PC to try again? If so check if it work with WinTV the drivers may need to be reinstalled.

Martin

[qttor]

Thanks for replying. Rebooting the PC and unplug/plugging the tuner both get Device Manager to recognize the tuner again and get it working in NPVR watching a channel. Starting a recording seems to be when things go wrong - there have been no partially recorded shows, only missing shows. I'll try installing the drivers again. I think I'll have a chat with the tuner manufacturer.
Thanks again.

[sub]

As Martin pointed out. In those logs, the device wasn't present when NextPVR wanted to use it:

Code:

2022-09-15 17:59:00.801    [DEBUG][4]    FindFilterByName failed to locate filter: Hauppauge WinTV-dualHD ATSC Tuner
2022-09-15 17:59:00.803    [ERROR][4]    Unable to locate tuner filter (Hauppauge WinTV-dualHD ATSC Tuner)

ie, either unplugged, or possibly hardware or driver issue that caused it to be missing at that time.