[mythtvnz] Unable to tune to DVB-S channels

[Steven Ellis]

Neil Bertram wrote:
> Hi all,
>
> After months of trying, 2 dishes and 3 LNBs later I finally managed to
> get hooked up to D1 yesterday. I can view channels by piping dvbstream
> into mplayer, signal strength and BER seem good....
>
> So next was trying to get it working in Myth. This was a major
> mission, as even though myth scanned the transponder fine and found
> all the channels, when it came to watching them in the frontend they
> didn't work. A little debugging with my satfinder discovered that myth
> was at least tuning on the wrong polarity, so I checked the database
> and indeed found it had filled up the table with rubbish entries on
> random frequencies all on V, plus 12483000H (that wasn't actually
> linked to the channels). I fixed that up manually with SQL, and it
> seems now Myth is tuning to the transponder properly when I open up
> live tv viewing, as executing a 'scan -c' in a console shows the right
> channel listing when the myth tv viewer is up...
>
> But the video output is completely black, down the bottom I get a line
> saying "Test - TVNZ Unknown Signal 84% | S/N 4.8dB | BE 0 | (LMs)
> Partial Lock".
>
> I'm presuming the partial lock is the problem. I did some googling,
> but couldn't find what LMs means, but it looks like I should have LMS
> instead. I dumped out lots of debugging stuff from mythbackend, but it
> looks like it's tuning just fine and I think it thinks everything's
> working. There's no mention of anything bad anyway...
>
> The card is a standard Skystar 2, still working fine on all channels
> via dvbstream...
Now you have fixed the DB - Rescan the channels to make sure they are
mapped to the correct mplex.

Steve

-- 
Steven Ellis - Technical Director
OpenMedia Limited
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