[mythtv-users] gentoo mythtv nova-t channel scan problem

[David Watkins]

On 09/11/05, Ben Edwards <funkytwig at gmail.com> wrote:
> On 11/9/05, David Watkins <watkinshome at gmail.com> wrote:
> > On 09/11/05, Ben Edwards <funkytwig at gmail.com> wrote:
> > > I have managed to get a good picture in mplayer so I guess my dvb card
> is
> > > set up.
> > >
> > > When I go to scan shannels it just sits there for about a minute with
> 'no
> > > lock' and eventualy gives up and comes up with 'Error tuning to
> transport';(
> >
> > What parameters are you entering for the channel scan?  I forget how
> > it's done (advanced something perhaps) but before you do a scan you
> > have to enter a bunch of parameters related to the dvb transmission
> > from your local transmitter.
> >
> >
> > These are what I used for Crystal Palace.
> >
> > freq                 505833330
> > B/W                8MHz
> > Inversion          Auto
> > Constellation    QAM 16
> > LP Coderate     3/4
> > HP Coderate    3/4
> > Trans Mode      2K
> > Guard Interval   1/32
> > Hierarchy         None
> >
> > I worked these out by following this document
>
> Is this defenatly nessesery?  I thought leaving things as auto was OK now.
> I was previously using knopixmyth and it just worked.
> > http://www.ethics-gradient.net/myth/mythdvb.html

Not all the parameters are necessary.  However, when I did my install
the opinion on this list was that the frequency plus a couple of
others were required.  That was certainly my experience.  I didn't
work with them all at auto.

I believer that some of the linux/myth bundles use the stable SVN
build so maybe your knopixmyth had different scanning code.  I don't
really know.

>
> Will have a look at this.
>
> > which showed me how to use scan and tzap, from the dvb-utils package.
> >
> > BTW I'm using 18.1.  I believe there have been lots of dvb related
> > changes in the SVN version, so things may be different now.
>
> I just did emerge mythtv and I think it gave me 18.1, does this make sence.

Sorry - I don't know what version of myth is packaged with Gentoo.