[linux-dvb] twinhan 1025 - problems locking onto signal

Manu Abraham abraham.manu at gmail.com
Mon Aug 13 20:14:43 CEST 2007


On 8/13/07, Manu Abraham <abraham.manu at gmail.com> wrote:
> On 8/13/07, Simon Kenyon <simon at koala.ie> wrote:
> > Manu Abraham wrote:
> > > On 8/13/07, Simon Kenyon <simon at koala.ie> wrote:
> > >
> > >> Manu Abraham wrote:
> > >>
> > >>> On 8/13/07, Simon Kenyon <simon at koala.ie> wrote:
> > >>>
> > >>>
> > >>>> Simon Kenyon wrote:
> > >>>>
> > >>>>
> > >>>>> just bought 3 cards for my mythtv master backend. silly me.
> > >>>>>
> > >>>>> anyway, using szap i find that tuning to a particular channel is at best
> > >>>>> a hit and miss affair.
> > >>>>> i have a 4x16 multiswitch which feeds astra28.2E into these three cards
> > >>>>> and 4 satellite receivers.
> > >>>>> they all get decent signal. i previously had a nexus-s and a technotrend
> > >>>>> 1500ci in the box and they had no problems with the signal.
> > >>>>>
> > >>>>> is there anything i can do - other than binning them?
> > >>>>> i'm using the hg tree of v4l-dvb.
> > >>>>> is there an expermental tree out there with some improvements for this card?
> > >>>>>
> > >>>>>
> > >>>>>
> > >>>> a data point is that it will not lock onto any signals with a vertical
> > >>>> polarization
> > >>>> but will lock on to signals with a horizontal polarization (at the
> > >>>> second attempt - not the first).
> > >>>> the latter sounds like a timing issue.
> > >>>>
> > >>>>
> > >>> Some of the 1025 cards have been very nasty. It resembles an older
> > >>> case where one card would not tune to either vertical (or was it
> > >>> Horizontal) completely stuck at one volytage level.
> > >>>
> > >>> To take a bite at it, load the dst module with verbose=5, module
> > >>> parameter. look at the logs, if you have timing errors you will see
> > >>> them in the log.
>
>
> can you check whether this tree behaves the same ? http://jusst.de/hg/v4l-dvb/
>

Sorry, that wouldn't help. Let me think over it a bit.



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