[linux-dvb] Re: Scan cannot cope with new Australian channel?

[John Dalgliesh <johnd@syd.microforte.com.au>]

On Thu, 29 Jan 2004, Nigel Pearson wrote:

> 	My STB found a new channel, so I added it into my scan data file
> and tried to scan:
> 
> % sudo scan dvb-tuning.uhf
> scanning dvb-tuning.uhf
> using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
> Frontend can not do INVERSION_AUTO, trying INVERSION_OFF instead
> initial transponder 543500000 1 2 0 3 1 2 0
> initial transponder 564500000 1 2 0 3 1 2 0
> initial transponder 648500000 1 2 0 3 1 2 0
> initial transponder 669500000 1 2 0 3 1 2 0
> initial transponder 578500000 1 2 0 3 1 2 0
[snip]
>  >>> tune to:  
> 578500000:INVERSION_OFF:BANDWIDTH_7_MHZ:FEC_2_3:FEC_NONE:QAM_64: 
> TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE
> 0x0000 0x0028: pmt_pid 0x010c (null) -- D-FOUR (running)
> 0x0000 0x0029: pmt_pid 0x0101 ABC -- D4-News (running)
> 0x0000 0x002c: pmt_pid 0x010d (null) -- D-FOUR. (running)
> 0x0000 0x002d: pmt_pid 0x0102 OICT -- D4-NSW (running)
> 0x0000 0x0030: pmt_pid 0x0103 TAB -- D4-TAB (running)
> 0x0000 0x0031: pmt_pid 0x0104 EXPO/TVSN -- D4-EXPO (running)
> 0x0000 0x0191: pmt_pid 0x0105 Fed Parliament -- D4Parl-Reps (running)
> 0x0000 0x0192: pmt_pid 0x0106 Fed Parliament -- D4Parl-Senate (running)
> 0x0000 0x0193: pmt_pid 0x0107 Fed Parliament -- D4Parl-ComReps (running)
> 0x0000 0x0194: pmt_pid 0x0108 Fed Parliament -- D4Parl-1Com'tee  
> (running)
> 0x0000 0x0195: pmt_pid 0x0109 Fed Parliament -- D4Parl-2Com'tee  
> (running)
> 0x0000 0x0196: pmt_pid 0x010a Fed Parliament -- D4Parl-3Com'tee  
> (running)
> 0x0000 0x0197: pmt_pid 0x010b Fed Parliament -- D4-Parl-1Com'tee  
> (running)
> Network Name 'DIGITAL FOUR'
> Segmentation fault

Yeah that Digital 4 channel sure has some weird setup. And half the 
services that it reckons are running are actually not running.

From an outsider's point of view it looks like it's having trouble with
those two unnamed services ... normally when you see '(null)' in a printf
like that it is because a NULL value was passed in for a string. Which is
likely causing bigger problems (the segfault) further down.

OTOH I can't believe you're the first linux user to scan that channel! It
has been running for some time now... (the OICT service is the only good
one - traffic cameras and surf reports :) ... I discovered it by accident
when I was rescanning for a test of iTele in the middle of December last
year - I sure got a shock when it came up! :)

> 	Adding -v does nothing helpful. Any ideas?

Have a look at the code in scan to see what it does if the service name 
doesn't get set, but the network name does (or maybe the other way 
around).

> --
> Nigel Pearson, nigel@ind.tansu.com.au | "Now the world has gone to bed,
> Telstra BI&D, Sydney, Australia       |  Darkness won't engulf my head,
> Office: 8255 4222    Fax:  8255 3153  |  I can see by infrared,
> Mobile: 0408 664435  Home: 9792 6998  |  How I hate the night." -Marvin

{P^/



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