[mythtv-users] EIT Data, what to delete before a full tuned scan?

John Pilkington J.Pilk at tesco.net
Fri Apr 11 11:34:24 UTC 2014


On 11/04/14 07:19, cvb at kruemel.org wrote:
> Hi,
>
> I know that EIT data for mythtv is only working after a full tuned scan,
> which is why I have created a small script to handle rescanning now and
> then. The script looks like:
>
> # Stop MythTV
> service mythtv-backend stop
> # Backup database
> /usr/share/mythtv/mythconverg_backup.pl
> # Delete old data
> . /home/mythtv/.mythtv/mysql.txt
>
> echo '
>    truncate table eit_cache;
>    truncate table channel;
>    truncate table channelscan;
>    truncate table channelscan_channel;
>    truncate table channelscan_dtv_multiplex;
>    truncate table program;
>   ' | mysql --database=${DBName} --user=${DBUserName}
> --password=${DBPassword}
>
> Then I do a full tuned scan via the backend setup, and thereafter run
> another script to delete unneeded channels and put the wanted channels
> to the right places.
>
> Now, apparently I'm missing one truncate in the script above, because,
> after the last full scan, one channel was missing which I (accidentally)
> thereafter added by scanning the existing transports. That particular
> channel (and only that one) is not showing any EIT data. So I deleted
> all channels again with the above script, did a full tuned scan again -
> but that channel does not show any EIT data in mythtv still. (It did
> before the scan, and it still does on my TV, so I'm almost certain that
> it is a configuration issue in mythtv.)
>
> What else would I need to delete before a full tuned scan?
>
> What would also help me would be to understand what is going wrong if I
> don't do a full tuned scan, so that I could maybe just tweak the entry
> for that particular channel manually in the database. But despite
> googling (and finding, e.g., this one:
> http://tweakingmythtv.wordpress.com/2011/01/08/mythtv-eit-data-not-working/
> - did not work for me), I still have no clue what might be going wrong.
>
> Thanks for any light you could shed on this!

This is intriguing, but I don't recall seeing the problem with DVB-T 
here in the UK.  I think it must be related to your local service 
providers, or maybe device drivers.  Perhaps some info about them would 
help.



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