[linux-dvb] Re: TDA10045H woes

[Ben McKeegan <ben@mckeegan.org>]

On Tue, 17 Jun 2003, Ben McKeegan wrote:

> Most frustratingly, whilst playing around with the first tda10045h patch
> last Saturday, after many inexplicable failed attempts with tzap, scan and
> dvbtune I succeeded in getting dvbtune to dump a list of channels from
> this mux.  Having then tried unsuccessfully to tune other frequencies I
> then found I could no longer dump the list of channels from this frequency
> either.  No amount of reloading drivers, restarting the system or trying
> to retrace my steps could reproduce that:  outwardly it appeared to be
> exhibiting the same symptoms as it is now with the latest driver version,
> although unfortunately I do not have any debug output to confirm that it
> was the same problem.

I've just managed to reproduce this with the latest driver as well: what I
did was to boot into Win XP, tune to this mux with the Windows driver,
then soft reboot back into Linux.  The debug output on the driver is still
looping through init exactly as I described in my last e-mail, and hasn't
even attempted to upload the firmware:  presumably the firmware has been
left in the card by the Windows driver, the frontend is still tuned to the
right frequent, and this is enough for dvbtune to receive the service info!

tzap is now giving a varing snr, e.g:

status 00 | signal 0000 | snr 003f | ber 00000000 | unc 00000000 | 
status 00 | signal 0000 | snr 0040 | ber 00000000 | unc 00000000 | 
status 00 | signal 0000 | snr 005c | ber 00000000 | unc 00000000 | 

and dvbtune will dump the channel list:

./dvbtune -i -f 641833333 -qam 16 -cr 3_4 | ./xml2vdr -
Using DVB card "Philips TDA10045H"
tuning DVB-T (in United Kingdom) to 641833333 Hz
polling....
Getting frontend event
FE_STATUS:
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: 0
SNR: 5
FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI
FE_HAS_SYNC
BBC ONE (TV):641833:V:0:27500:600:601,602:0:0:4167
BBC TWO (TV):641833:V:0:27500:610:611,612:0:0:4231
BBC THREE (TV):641833:V:0:27500:620:621,622:0:0:4351
BBC NEWS 24 (TV):641833:V:0:27500:640:641:0:0:4415


So, the burning question is why doesn't the linux driver initialize?

Cheers,
Ben.




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