[mythtv-users] unable to recognize channel

[David Watkins]

On 04/10/05, Ricardo Kleemann <ricardo at americasnet.com> wrote:
> Hi all,
>
> I have mythtv 0.18.1 installed and working fine on a Fedora 4 system, with
> PVR-150MCE and a GeForce4 MX440 setup.
>
> I don't really need to change channels in the sense that I expect the tuner
> to tune away, because I simply have a S-Video input into the PVR-150, so the
> video will always correspond to the input video source.
>
> However, I do need to "tune" in the sense that I want the program
> information to match what I'm watching, so that when I record, it'll have
> the appropriate program info.
>
> So what I have is a video source hooked up to Data Direct, and it grabs DISH
> network info. My S-Video input is the S-Video output from a DISH receiver.
>
> The problem I'm having is that if I bring up the guide (say by pressing
> "S"), I can go to whatever channel I want, say channel 596 on DISH, and the
> guide properly shows the programs and info for that channel. However, if I
> select that channel, the "tune" doesn't happen. It's as if channel 596 were
> invalid, so it simply stays on the current channel. Let's say that mythtv
> starts up at channel 100, if I simulate going to 596 (either by typing in
> 596, or by going into the guide and selecting 596), mythtv pretty much
> rejects it, and goes back to channel 100.
>
> I tried altering my config so that the default channel is 596 (or some other
> channel), but "watch tv" always defaults to 100 and I guess rejects the
> other channel.
>
> So I can never have the program info in synch with what is actually playing.
>
> How can I fix this? I know that the Data Direct info is being picked up
> because the tv guide has the whole lineup and shows the various channels...
> but if I try to "tune" to that channel, it fails.
>
> Again, I'm not really trying to tune, but I just want to be able to ensure
> that whatever I'm watching is reflected on the current program information.
>
> What am I missing?
>
> thanks
> Ricardo

I seem to remember a similar thread from a while back.  I think the
trick was to provide a dummy channel change script (such as you'd use
to drive an ir-blaster) to make mythtv think it had successfully
changed channel on your dish box.  Otherwise mythtv thinks the channel
change has failed so stays where it is.

Hope this helps