[mythtv] Solved - DVB-T scan problem with MythTV SVN (r9944)

Aidan Thornton makomk at lycos.co.uk
Sat May 20 19:35:19 UTC 2006

> From:: "Aidan Thornton" <makomk at lycos.co.uk>
> To: "Development of mythtv" <mythtv-dev at mythtv.org>
> Subject: Re: [mythtv] DVB-T scan problem with MythTV SVN (r9944)
> Date: Sat, 20 May 2006 16:30:45 +0000 (GMT)

> > From:: "Aidan Thornton" <makomk at lycos.co.uk>
> > To: mythtv-dev at mythtv.org
> > Subject: [mythtv] DVB-T scan problem with MythTV SVN (r9944)
> > Date: Sat, 20 May 2006 16:06:40 +0000 (GMT)
> > Hi,
> > I tried scanning for DVB-T channels on my HVR-900 (em2880_dvb driver)
> using
> > MythTV SVN r9944. It found the channels and muxes and added them, however
> > it also added 6 transports with bogus frequencies (2147483647 Hz) and all
> > the channels seem to be associated with them. I'm in the UK, Waltham
> > transmitter, and my (correct) dvbscan-generated channels.conf and a dump
> of
> > my dtv_multiplex table are attached.
> > I'm not sure how far back this problem goes - I only just started using
> > MythTV SVN. (0.19-fixes doesn't work with this driver - the signal
> > detection code doesn't like it.) Note that I'm almost certainly the first
> > person to use MythTV with the em2880_dvb driver (I had to fix it to get
> > MythTV to work at all), which might complicate things slightly.
> > Could someone have a look at this?
> > Thanks,
> > -- Aidan Thornton
> Oh, and I just spotted the following interesting lines in the output of
> "mythtv-setup -v siparser,channels" when scanning for channels (I hope
> LycosMail doesn't mangle this). None of the frequencies listed in relation
> to the NIT seem to bear any resemblence to either the actual frequencies of
> DVB-T on the transmitter or the frequencies of the multiplexes/transports
> added using insert_dtv_multiplex:

Already fixed in one of the patches attached to http://svn.mythtv.org/trac/ticket/1485 (use-correct-frequency.4.diff) - sorry about that.

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