[mythtv] [Experimental PATCH] BIG DVB PATCH V1

[Ashley Bostock]

I haven't tried this patch, but the drivers that come with the 2.6.9
kernel work fine with your version of the nova-t without the need to
install the linuxdvb drivers as well.


On Thu, 4 Nov 2004 10:29:18 +0000, Stephen Williams
<stephen.gw at gmail.com> wrote:
> 
> 
> > >    SIParser: ERROR: PMap Timeout in PAT Stage!
> > > I don't know how terminal this is, but could it be the reason the
> > > backend becomes none responsive?
> >
> > This is a terminal issue.  It shouldn't make the backend unresponsive, but if
> > you are watching livetv it tends to leave a black screen up for a while until
> > the backend times out..  Of course once hte backend is on a bad channel you
> > have to have it change to another channel some way other than livetv to get out
> > of this situation as well..
> 
> 
> Ok, i've got further with figuring out what's going on. It seems that
> the old DVB drivers I was using (linuvtx 1.0.0) were just too flaky,
> they're a complete no-go with the DVB patch. Although 1.1.1 aren't
> working great either....
> 
> The 1.1.1 drviers said tuning worked, got lock, signal strength great,
> etc, except no data was actually being recevied from the card. It
> appears to be a problem with the driver not initialising the card
> properly, maybe not loading the firmware. Loading the 1.0.0 drivers,
> removing them then loading the 1.1.1 drivers seemed to get things
> going. Having said that, I now appear to get occasional 'packet
> currupt' and 'stream continuity errors' whilst previously I never had
> any. Tuning to a channel on a different mux can also take up to ten
> seconds! In short, I don't trust the DVB drivers at all now and I need
> to sort these problems out first.
> 
> One thing this did tell me about MythTV is that when no data is being
> recevied from the DVB card the frontend will report that it can't talk
> to the backend. This can occur during startup of the frontend if the
> backend is performing a redicualously long 10 second channel tune.
> 
> > The current code doesn't stop looking for the PAT even after a tuning (lock)
> > failure so that message alone doesn't help much..
> >
> > Are you actually getting a lock on the transport but failing to get a PAT?
> 
> Indeed, I was failing to get any packets but it's a driver issue.
> 
> So people, I need some advice. Are the DVB drivers for the 2.6 kernel
> in a better state than for the 2.4 kernel i'm currently using? I've
> got what I believed to be a standard card, it's a Nova-T 909 based on
> the TDA10045 chipset. If anybody has info about the relative stability
> of the 1.1.1 drviers against the current 2.6 kernel drivers please
> drop me an email directly, there's no point pulling this thread
> further OT.
> 
> Steve
> 
> 
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