Re: si2168/dvbsky - blind-scan for DVB-T2 with PLP fails

[Hurda <hurda@chello.at>]

(Resending as the first try apparently hasn't made it onto the mailing-list)


On 06.06.2015 16:17, Antti Palosaari wrote:
> On 06/06/2015 05:07 PM, Hurda wrote:
>> Thanks, this worked.
>> The kernel of Ubuntu 15.04 already was compiled with dynamic debug,
>> which saved
>> me a lot of time.
>> The driver is properly setting stream_id to 1 when needed.
>>
>> I tried again with the vanilla source and "cmd.args[2] = 0;".
>> With the vanilla source, it doesn't find any T2-transponders.
>
> You mean with vanilla source, but without that "cmd.args[2] = 0;" hack it does
> not find any transponders?
>

No T2-transponders, no.
With "cmd.args[2] = 0;" the number of found T2-transponders is changing with 
every scan.
Using the dvbsky-driver, the scan always finds all four T2-transponders.

>
>> With the modified source, the number of found transponders changes every
>> time
>
> You mean with source, modified with that "cmd.args[2] = 0;" hack it finds
> transponders, but not always?
>
> If that is difference, then it sounds just like application is requesting some
> PLP, probably 0, and it will not work as your network delivers channels using
> PLP 1.
>
> "cmd.args[2] = 0;" disables PLP filtering - it sets auto mode. Why it likely
> does not find all channels is too short timeout.
>
> Increase timeout value to 3 second, 900 => 3000, in funtion
> si2168_get_tune_settings()

No difference, even with 10000. Tried that timeout with "cmd.args[2] = 0;" and 
"cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;"

> You didn't provide any debugs to see what PLP ID your application is
> requesting. It is the most important thing I would like to know, as I suspect
> it is wrong.
>
> regards
> Antti
>

Debug-logs:
http://www.mediafire.com/download/8j4s9oytsfv9s40/si2168-dvbsky_debug_logs.zip
Made with the vanilla tree and "cmd.args[2] = 0;", and timeout 900 (default) and 
3000msec.