[mythtv-users] HD Homerun Tuning Problems

Daniel Kristjansson danielk at cuymedia.net
Sat Jun 16 18:25:24 UTC 2007

On Wed, 2007-06-13 at 20:40 -0700, Kirk Bocek wrote:
> Daniel Kristjansson wrote:
> > The "mythbackend -v record,channel,siparser" log will hopefully
> > tell us exactly where the problem lies. :)
> Okay, here you go. I've cut out what I'm pretty sure is just the portion 
> regarding the problem channel. I selected 'Watch Live TV' and Myth started on 
> one of the okay channels, 'channelnum' 65 (that's the Samantha Brown 
> references below.) I then switched to my problem channel, 'channelnum' 66 
> which refused to lock as usual, displaying "(LAm) Partial Lock" on the screen.

> 2007-06-13 19:52:34.250 ChannelBase(3): Failed to find channel() on current 
> input (MPEG2TS) of card (3).
> 2007-06-13 19:52:34.255 ChannelBase(3): Failed to find channel() on any input 
> of card (3).

You need to make sure you have valid starting channels
for each of your inputs in mythtv-setup, but this isn't
your main problem.

> 2007-06-13 19:52:35.629 PMT in input stream
> 2007-06-13 19:52:35.630 Program Map Table ver(5) pid(0x67) pnum(10) len(85)
>    Registration Descriptor: 'CUEI' SCTE 35 2003, Cable Digital Program 
> Insertion Cueing Message
>   Stream #0 pid(0x43) type(video-mpeg2  0x2)
>    Conditional Access: sid(0xe00) pid(0x66) data_size(3)
>    Possibly a DVB UK Channel List Descriptor (0x83) length(1)
>    Caption Service Descriptor  services(2)
>       lang(eng) type(0) easy_reader(0) wide(0) line_21_field(0)
>       lang(eng) type(1) easy_reader(0) wide(0) service_num(1)
>   Stream #1 pid(0x44) type(audio-ac3  0x129)
>    Conditional Access: sid(0xe00) pid(0x66) data_size(3)
>    ISO-639 Language: code(eng) canonical(eng) eng(English)
>   Stream #2 pid(0x45) type(caption service  0x134)
>    Conditional Access: sid(0xe00) pid(0x66) data_size(3)

This is your main problem. Your cable provider is telling
MythTV that this television program is encrypted. Since the
HDHomeRun does not do decryption MythTV does tells you it
hasn't found a usable PMT (the lower case 'm'). The good
news is that if you can tune this channel using other
programs that don't check for encryption then you should
be able to do so using the MythTV version in SVN head, so
long as the TS packets are not improperly labeled as well.

-- Daniel

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