[mythtv-users] My HDTV woes

Steven Adeff adeffs.mythtv at gmail.com
Mon Apr 3 16:45:19 UTC 2006


On 4/3/06, Jesse Guardiani <jesse at wingnet.net> wrote:
> Steven Adeff wrote:
> > On 4/3/06, Jesse Guardiani <jesse at wingnet.net> wrote:
> >> Steven Adeff wrote:
> >>>> 2.) The rate of MythTV successfully tuning any given HDTV channel through
> >>>> my AverTV HD A180 DVB card in LiveTV is relatively poor. I had to move
> >>>> this card to the second card in my mythtv-setup so my family could watch
> >>>> LiveTV reliably on my PVR 350. This had the side effect of improving the
> >>>> HDTV LiveTV success rate a bit, oddly enough. For some reason Myth has
> >>>> an easier time tuning the card from the 'Y' button rather than entering
> >>>> LiveTV directly, but it still fails now and then. I'm pretty sure this
> >>>> is just a problem with MythTV and ATSC cards in general, and I suspect
> >>>> you'll have this problem no matter how huge your CPU until the code gets
> >>>> fixed.
> >>>>
> >>>>
> >>> Are you using OTA or QAM with your A180? I've got two running
> >>> alongside an HD3000 in QAM and PVR-150 and have had no tuning issues
> >>> with any of the cards.
> >>>
> >>>
> >> QAM. mplayer and azap tune fine. It takes a little while, but it works.
> >> Myth doesn't. I haven't
> >> had time to check the backend logs for a rhyme or reason yet, but that's
> >> the next step.
> >>
> >> Do you use LiveTV? I haven't had any problems with actual recordings
> >> yet, but I've only
> >> recorded a few shows on that tuner due to the limited channel selection
> >> in my area.
> >>
> >
> > I do, I have it set to go to my PVR150 first since it is connected to
> > my Digital Cable box, but one of my A180's is the first tuner when I
> > go to an HD channel, and with March Madness I've been watching the HD
> > channels live quite a bit recently without a problem. I wonder if its
> > a signal strength issue? I think Myth has different requirements for
> > s.s. than azap.
> >
>
>
> What version of myth are you running? And what kernel version? And what
> playback card?
>
> I'm running 0.19-fixes revision 9591 from the 1st on a 2.6.15 kernel with
> a 128M nivida 5200 AGP.
>
>
> I'll check the signal strength tonight. It was on the low end (good
> signal end) of azap's specs, and
> I think Myth typically displays 98% signal strength when changing
> channels, but I'll have to check
> the backend logs to be sure.

fixes SVN from sunday morning, before that from about a week ago.
2.6.15 kernel (iirc, I'd have to check when I get home), NVidia
GeForce3 on that computer.

--
Steve


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