[mythtv-users] Mythtv not setting the preset channel correctly on ubuntu.
mythtv at gecka.us
Sun Nov 25 08:38:50 UTC 2007
Whoops. My reply got filtered for coming from the wrong address.
On Nov 24, 2007 11:58 AM, Brady <brady at gmail.com> wrote:
> So I started off using composite video. Thats how it was all wired
> before. However I started getting a black screen with sound after
> upgrading and fixing like 12 different hardware problems that came up
> (power supply died, hard drive died, motherboard died.. this is what I
> get for using spare/left over parts to build the machine.. its all new
> now though).
> Anyways. I spent the last day playing around with it trying to figure
> out why RF works great, but composite/svideo gives a black screen. I
> noticed that it works great after I tinker with the settings using
> mythsetup, but then after getting everything running I would reboot
> the machine cleanly and it wouldn't work. Usually switching back to RF
> then to svideo worked. I was annoyed enough by Mythtv not working
> after a reboot that I decided to just switch back to RF and use the
> preset channel trick, but it turns out that this doesn't work either.
> So now I am stuck with Mythtv not getting the initialization path
> correct for composite/RF/Svideo and I only have two days before I fly
> back home. I am going with the path that I think I can actually fix in
> that time frame.
> On Nov 24, 2007 8:51 AM, Michael T. Dean <mtdean at thirdcontact.com> wrote:
> > On 11/24/2007 02:16 AM, Brady wrote:
> > > On a fully updated ubuntu machine I am running into a strange problem
> > > where ubuntu will not properly set the preset channel so my cable box
> > > doesn't work.
> > Use Composite or S-Video instead of RF Modulated output from your cable
> > box. Then, you don't need (can /not/ specify) a preset channel.
> > > Is this a known issue?
> > Some have reported similar behavior. I'm still of the opinion that the
> > behavior is a result of misconfiguration, but I haven't done any testing
> > myself.
> > > I tried working around this by
> > > setting the channel by adding 'ivtv-tune -c 3 /dev/video0' in the
> > > mythtv-backend init script
> > Though if you get it to work, it's likely to only affect the first
> > recording, so you'd have to reboot between each recording.
> > > but it is segfaulting on startup (But not
> > > when I run by hand later.. I assume the card is being initialized some
> > > time between.) Anybody have any idea how this can be fixed?
> > Best bet is to use Composite or S-Video. They will /both/ give you much
> > better quality, anyway.
> > Mike
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