[linux-dvb] cx24110 driver question/problem

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On Tue, Jul 19, 2005 at 07:52:59PM +0200, Peter Hettkamp wrote:
> On Mon, Jul 18, 2005 at 08:11:55AM +0200, Adam Szalkowski wrote:
> 
> > Tried the driver with this line changed and it did not work (szap (CVS) 
> > reports lock but no data from dvr0 (using -r of course)) for most channels, 
> > only few were tunable.
> > When I remove these lines completely in cx24110_send_diseqc_msg and 
> > cx24110_send_burst I am able to tune to all channels again.
> > So for me this would be no fix for Pinnacle PCTV Sat on a DiSEqC 2.0 switch 
> > with 2 LNBs.
> 
> Can you try to remove the setting for register 77 from send_burst but keep
> the CHANGED line in send_msg? I'd expect this to work, if not something
> really strange may be going on.
> 
> Btw., do you have any hint what is the difference between DiSEqC 1.x and
> 2.0?

AFAIK DiSEqC 2.0 adds a return channel (so set-top-boxes could
automatically find out what equipment they are connected to).
I've never seen a set-top-box which supports this, however.
But the better DiSEqC switches do, although most LNBs don't, so even
if you have a DiSEqC 2.0 switch you cannot find out what's behind it.
The FE_DISEQC_RECV_SLAVE_REPLY ioctl is supposed to be used
for handling DiSEqC 2.0.
The DiSEqC spec is here:
http://www.eutelsat.com/satellites/4_5_5.html

Johannes



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