[linux-dvb] Re: Problems locking the signal (Hauppauge WinTV Nexus)

[Luca Abeni <lucabe72@email.it>]

Hi all,

answering to myself... I upgraded to the latest cvs version of the DVB
driver, and everything seems to work well, now.

Thanks to whoever fixed the problem!!!

I also tried the latest cvs version of the dvb-kernel driver, and it
correctly locks the signal. However, if I use mplayer to play the
channel, it blocks after few seconds (using the DVB driver, mplayer
works well).

			Thanks,
				Luca

On Wed, 2003-08-27 at 12:40, Luca Abeni wrote:
> Hi all,
> 
> I am using a Hauppauge WinTV Nexus DVB card, with the latest dvb driver
> (linuxtv-dvb-1.0.0.tar.gz) on a 2.4.18-14smp kernel (RedHat 8.0).
> 
> The driver seems to correctly identify the card:
>     [...]
>     Linux video capture interface: v1.00
>     DVB: registering new adapter (Siemens/Technotrend/Hauppauge PCI rev1.3).
>     DVB: registering frontend 0:0 (Alps BSRV2)...
>     DVB: AV7111(0) - firm f0240009, rtsl b0250018, vid 71010068, app
>     8000261a
>     DVB: AV7111(0) - firmware supports CI link layer interface
>     av7110(0): adac type set to 0
>     Siemens/Technotrend/Hauppauge PCI rev1.3 adapter 0 has MAC addr = 00:d0:5c:00:df:88
> 
> 
> However, it often fails to lock the DVB signal. I am receiving from
> satellite 13E (EUTELSAT HotBird), and if I do
>     dvbtune -c 0 -f 11623000 -p V -s 27500
> it correctly locks the frequency:
>     Using DVB card "Alps BSRV2"
>     tuning DVB-S to L-Band:1107311616, Pol:V Srate=27500000, 22kHz=off
>     polling....
>     Getting frontend event
>     FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI FE_HAS_SYNC
>     Bit error rate: 0
>     Signal strength: 34695
>     SNR: 54484
>     FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI FE_HAS_SYNC
> 
> but if I do
>     dvbtune -c 0 -f 11766000 -p V -s 27500
> it sometimes work and often fails with:
>     Using DVB card "Alps BSRV2"
>     tuning DVB-S to L-Band:1107311616, Pol:V Srate=27500000, 22kHz=off
>     polling....
>     Getting frontend event
>     FE_STATUS: FE_HAS_SIGNAL FE_TIMEDOUT FE_HAS_CARRIER
>     Not able to lock to the signal on the given frequency
> 
> According to http://www.lyngsat.com/hotbird.shtml both 11623 V 27500 and
> 11766 V 27500 contain a valid signal.
> I also tried to measure the signal strength at 11766 V 27500 by using an
> apposite hardware device (I think it is a spectrum analyzer), and the
> signal seems to be ok.
> Moreover, the same DVB card used under windows is always able to lock
> the signal at 11766 V 27500...
> 
> I tried to search in the list archives, but I did not find any useful
> information about my problem. Is this a known issue? Is anyone else
> having similar problems? Has anyone any suggestion?
> 
> 			Thanks,
> 				Luca

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