[mythtvnz] DVB-S Reception issue

David Shepherd david at daveshep.net.nz
Tue Jun 21 05:36:58 BST 2011


> Ok so I've just moved house and until we get a new aerial fitted we don't
> have DVB-T but there is an old Sky dish so I thought I'd make do until the
> Toroidal is mounted,
>
> Now my DVB-S had been playing up a bit at the old house so I thought the
> LNB might have been on the way out, or the SkyStar 2 card.
>
> At the new house similar problems so I swapped the card for a known
> working one but still the same issues.
>
> If I tune to the Sky broadcast of TV2 no issues, Signal lock and I can
> watch the show. If I tune to any freeview channels I get lock for 3-5
> seconds and then it changes to TV One. That locks for 3-5 seconds and then
> it re-tunes back to TV One.
>
> I've tried tweaking the skew etc of the dish, and a vanilla DVB-S STB will
> tune in, but MythTV won't lock.
>
> Anyone else ever seen this?
>
> Steve
>
>
> --------------------------------------------
> Steven Ellis - Technical Director
> OpenMedia Limited - The Home of myPVR
> email   - steven at openmedia.co.nz
> website - http://www.openmedia.co.nz
>
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>
Hi Steve

I've got something similar going on but a bit different from you.  I
noticed that after upgrading to 0.24.1 (via debian-multimedia.org), Live
TV on my combined FE/BE would go into an endless cycle of signal lock then
tuning - didn't matter which channel I tried to tune to.  If I bring up
the playback menu and then escape out of it, it will stay locked the
channel but if I try to change channels it goes back into the loop.

However I can record shows off any channel via a scheduled recording, and
since I don't use Live TV much I've not bothered to try and isolate the
problem.  The other odd thing is that I can watch LiveTV and change
channels from a remote frontend no problem.

I did a bit of digging on the Dev mailing list and there are a couple of
issues (supposedly fixed) related to thread deadlocks in the backend that
give similar symptoms to mine.

Don't know if this helps at all sorry.

Dave




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