[mythtv-users] Easier way to reset live tv start channel?

Ronald Frazier ron at ronfrazier.net
Mon Jan 2 18:27:05 UTC 2012


On Mon, Jan 2, 2012 at 10:46 AM, Michael T. Dean
<mtdean at thirdcontact.com> wrote:
> You can use mythtv-setup to edit the start channel for the input(s).

I don't think that actually works. The last time this happened to me,
many months ago, I spent about 20 minutes playing with that setting in
mythtv-setup, trying to figure out why it wasn't taking effect. I was
changing it, restarting the backend, restarting the frontend, in all
different combinations and order. Then I finally discovered the
DefaultChanid.

So the per-host DefaultChanid setting seems to override the input
start channels. They may come into play when you switch from one input
to another, but not when first entering live tv.



> What is supposed to happen is you attempt to start Live TV and it's
> unable to tune a channel, it should pop up a dialog saying we should
> have gotten a lock by now (wording should probably be improved over
> current to make it a bit friendlier/less techy, too), then it offers you
> the chance to switch to a different channel.  This has been in and out
> of working order--probably more out than in--for quite some time, and
> the best approach would be to fix this.  That way, your wife or anyone
> else--including visitors--would be able to figure out what's going on
> and how to get to a working channel.

The thing is, (at least in this case) it is getting a lock on the
channel. The PAT and PMT are there and being detected, but it's not
receiving a valid/complete A/V stream. I tried watching with my TVs
built in digital tuner, and it was seeing no video stream, and only
getting choppy audio. But the point was there was just barely enough
data there that it was satisfying myth in the tuning department, but
there just wasn't anything worth playing. Myth ended up exiting with
the missing jump file error (or something like that).

-- 
Ron Frazier


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