[mythtv-users] DVB, Diseqc and scan

Simon Kenyon simon at koala.ie
Sun Jun 12 11:59:03 UTC 2005

On Sunday 12 June 2005 08:46, Johan Tufberg wrote:
> Simon Kenyon wrote:
> >On Saturday 11 June 2005 23:34, Johan Tufberg wrote:
> >>I have a myth box setup with a TechnoTrend premium DVB-S that are
> >>supposed to communicate with 2 LNB:s on one dish trough a Diseqc switch
> >>(1.0, 2-way). The satellites I'm trying to use are Thor and Sirius.
> >>
> >>I have entered the transponders and I have also been able to scan the
> >>satellite on LNB1 but I can not seem to be able to get myth  so select
> >>LNB2. When I try to scan the second satellite I get, NO LOCK.
> >>
> >>If I switch the cables I get signal locked on LNB1 but still LNB2 seems
> >>to be non-operating. I've read that there have been reports on this
> >>listing that there may be some problems with LNB switching via Diseqc?!
> >>Anyone that can shine some light upon this issue or give any direction
> >>of where to search for answers...
> >
> >i cannot get diseqc to work either
> >this is with 2.6.11
> >i've used the kernel dvb drivers and the linuxtv cvs
> >i've asked questions on the linux-dvb list but have never got an answer
> >from googling around it does appear that there is a bug in the diseqc
> > surpport (something to do with timing calculations) in the 2.6 version of
> > the drivers. but nobody seems bothered to fix it and i don't really know
> > how to.
> >
> >unless this is all compkete rubbish and i have either a broken nexus-s or
> > two broken switches.
> >
> >so all i'm really saying in a very long way is "me too"
> >
> >regard
> Hi
> Simon, I'm also using 2.6.11 kernel drivers on my gentoo system. I have
> compiled mythtv from source instead of getting it from an ebuild.
> Anyway, I have also ompiled the linuxtv-apps from linuxtv.org. In this
> bundling of test utilitys there is a scan utility useful for scanning
> transponders and getting an output of channels that can be used in vdr.
> When using the scan utility I can scan both my satellites without any
> problems and therefore switching between the LNB:s  work. An example
> "./scan -s 1 dvb-s/THor-1.0W" where the "-s 1" tells the scan utility to
> use the second LNB and this works without any problems.
> So what I'm trying to say in a long way is that I do not think it is the
> kernel drivers that are the issue.

i agree
for me scan does not work correctly (or more likely the switch/nesus do not 
work correctly)
i've tried two switches, so maybe it is the card in my case

sorry i couldn't help


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