[linux-dvb] Re: help requested for getting out of the problems with dvb-c and UPC

["Gerhard Steiner" <GSteiner@gmx.at>]

Thanks for the answers.
I am using a Haupauge DVB-c 727 with a av7110 and ves1820.
So it is a fullfeatured card (it's my only one).

The problem is, that I can scan everything and I do have a working
channels.conf for vdr.

But some channels do have artefacts.
Inversion = Off
QAM = 256
FEC = auto

I don't know why some channels do have a higher blockerror and higher verror
(what's that?).

I do get the same problems either with vdr or czap.

Also Martin Neuditschko has these artefacts, but everyone has it on
different channels.

Where to start?

Thanks, Gerhard

> On Tue, Nov 04, 2003 at 02:59:49PM +0100, Robert Schlabbach wrote:
> > From: "Gerhard Steiner" <GSteiner@gmx.at>
> > > since some time a lot of people are trying to get a DVB-c card running
> > > together with upc-Vienna.
> > 
> > What kind of card are you using, a "budget" card or a "full featured"
> card
> > with a TI AV7110 on it...? What demodulator chip is on it?
> > 
> > > Unfortunately we are facing some troubles (artefacts), but noone has
> the
> > > knowledge to find a real solution (or even to find the real problem).
> > > UPC-Vienna is using QAM_256, so maybe it is a problem of the driver.
> > 
> > Indeed, I haven't heard of QAM-256 being used anywhere before. What is
> the
> > symbol rate and the net data rate per channel...?
> 
> http://www.linuxtv.org/mailinglists/linux-dvb/2002/11-2002/msg00421.html
> DVB/apps/scan/dvb-c/at-Vienna
> 
> It seems like it used to work, at least with the VES1820 frontend...
> 
> You could check CVS for changes which might have broken QAM256 support:
> http://linuxtv.org/cgi-bin/cvsweb.cgi/DVB/driver/frontends/
> 
> Good luck,
> Johannes
> 
> 
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