<p dir="ltr"><br>
On 3 Jun 2016 11:58 am, "Doug Scoular (dscoular)" <<a href="mailto:dscoular@cisco.com">dscoular@cisco.com</a>> wrote:<br>
><br>
> Hi All,<br>
> There's been an interesting development in my 0.28 DVB-T drama... but<br>
> first let me answer some of the replies I've received.<br>
><br>
> mikep wrote:<br>
> > To mention the obvious, have you checked that the transmitter is<br>
> >actually working? Have there been<br>
> > changes in frequency allocations, transmitter power levels or maybe<br>
> >there is scheduled (or<br>
> > unscheduled) maintenance going on?<br>
><br>
><br>
> and perkins1724 wrote (possibly the same person):<br>
> ><br>
> > Are you sure you are on the correct transmitter? This site lists a<br>
> >completely different set of frequencies for Bouddi.<br>
> ><br>
> > <a href="https://ozdigitaltv.com/transmitters/NSW/32-Bouddi">https://ozdigitaltv.com/transmitters/NSW/32-Bouddi</a><br>
><br>
> Well, in my email my focus was really on the fact that external to<br>
> mythtv, tzap is still able to get lock on any channels that show up in a<br>
> scan. Prior to this I had suspected something had happened to my antenna<br>
> or the transmitter. That told me that at least some of the channels were<br>
> okay.<br>
><br>
> There is very little status information to be had from any of the digital<br>
> broadcasting sites I could find through google. I did stumble upon the<br>
> exact link you quoted above and I also noticed that the frequencies quoted<br>
> were quite different to those provided in the Ubuntu 16.04 /usr/share/dvb<br>
> initial scan files for au-Newcastle. I even created my own initial tuning<br>
> file with the frequencies I found... but none of them would get lock. I<br>
> have no clue how to determine which transmitter is actually in use other<br>
> than by the general direction the antenna is pointing in. However, read<br>
> on...<br>
><br>
> I then had a brain-wave, I still had my April 23rd version of mythbuntu<br>
> 14.10 and mythtv 0.27 sitting on my /dev/sda2 partition. That was the date<br>
> I decided to bite the bullet and upgrade to 0.28... I was super impressed<br>
> at how smoothly this went at the time. Anyway, I rebooted in to 14.10<br>
> running 0.27 and found that all networks and all their respective channels<br>
> work! There's nothing wrong with the transmitter, antenna or the quad<br>
> shielded cable. Scans on 0.27 don't show Southern Cross Ten or Seven etc.<br>
> but tzap will happily get lock on all of them as will mythtv 0.27.<br>
><br>
> I cannot just revert back to my April 23rd 0.27 as there have been way<br>
> too many episodes of Masterchef recorded :^) and I assume my database<br>
> schema evolved somewhat when going from 0.27 to 0.28.<br>
><br>
> 0.28 *was* working perfectly on all channels till the end of May.<br>
> Something, maybe through an auto-update, changed and suddenly 0.28<br>
> couldn't tune to any channels (and tzap could only tune to a limited<br>
> subset even when using old channels.conf files).<br>
><br>
> My plan is to reboot in to 0.27, export my channel and dtv_multiplex<br>
> tables and reboot back into 0.28. I'll backup my 0.28 mythconverg<br>
> database. Delete all 0.28 channels, try a rescan (no doubt losing Seven,<br>
> Southern Cross Ten, and possibly, ABC in the process) and see if mythtv<br>
> 0.28 is able to get lock again. If that succeeds I'll try hand merging my<br>
> other 0.27 channel and dtv_multiplex tables back in.<br>
><br>
> The worrying aspect is the fact that tzap under 14.10 can tune to all<br>
> channels but under 16.04 it could only tune to channels that had shown up<br>
> in a scan. It's a real puzzler. I'm also surprised that under 14.10 and<br>
> 0.27 I can get lock on channels via tzap that do not show up in a scan.<br>
><br>
> I'll try and update this thread when I can make a comparison of the 0.27<br>
> dtv_multiplex/channel tables and the 0.28 ones currently buggered.<br>
><br>
> Again, any thoughts or insight as to why this might of happened much<br>
> appreciated.<br>
></p>
<p dir="ltr">Not sure if this helps but I'm in Sydney and I did update mythtv (on mythbuntu 14.04 though) from 0.27 to 0.28 about a month ago and I can confirm that all channels work properly for me as they did on 0.27. Tuning&recording all good here.</p>
<p dir="ltr">Igor</p>
<p dir="ltr">> Cheers,<br>
><br>
> Doug<br>
><br>
> "The big print giveth and the small print taketh away..."<br>
><br>
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