[mythtv-users] PVR 150 Fails to Access Motorola Cable Decoder Box Composite Signal

[Michael T. Dean]

On 09/12/2009 05:11 PM, Mache Creeger wrote:
> I have a Comcast Motorola SD cable box externally controlled with the 
> channel program from the 
> /usr/share/doc/mythtv-docs-0.21/contrib/channel_changers/dct-channel 
> program over a serial cable. I feed composite video from the cable box 
> to the composite input on an SBE's PVR 150. After working fine for 
> years, it has suddenly stopped working and is the only way I can 
> access premium cable content on myth. I have verified that the 
> composite signal coming out of the cable decoder box is fine.
>
> I cannot record and when I try to watch live TV from the cable box it 
> goes directly back to the menu. In /var/log/mythtv/mythfrontend.log, I 
> get the following errors.
>
> 2009-09-12 13:45:16.820 Connecting to backend server
> 2009-09-12 13:45:16.821 Using protocol version 40
> 2009-09-12 13:45:16.831 TV: Attempting to change from None to 
> WatchingLiveTV
> 2009-09-12 13:45:16.832 Using protocol version 40
> 2009-09-12 13:45:16.964 GetEntryAt(-1) failed.
> 2009-09-12 13:45:16.965 EntryToProgram(0 at Wed Dec 31 16:00:00 1969) 
> failed to get pginfo
> 2009-09-12 13:45:16.965 TV Error: LiveTV not successfully started
> 2009-09-12 13:45:16.965 TV Error: LiveTV not successfully started
> 2009-09-12 13:45:17.037 TV: Deleting TV Chain in destructor
> 2009-09-12 13:45:17.043 DPMS Deactivated
> 2009-09-12 13:45:17.045 DPMS Reactivated.
>
> I have 3 tuners (1 x PVR 150, 1 x PVR 500s) that use onboard NTSC 
> tuning and a single HDHomerun for a total of five other tuners. The 
> externally controled cable box tuner is number six. All other aspects 
> of mythtv work fine.
>
> The channel change program works fine manually and is configured 
> properly in mythtv-setup.
>
> Any ideas? 

Most likely broken input connections.  See 
http://www.gossamer-threads.com/lists/mythtv/users/264034#264034 (and 
note that you may need to do both the capture card and video sources 
portion to clean up the broken data).

If that doesn't fix it, the backend logs would be far more useful than 
frontend logs.

Mike