[mythtv-users] Lock L_S Issues with DVB reception - UK - how I got it working
Greg Cope
gregcope at gmail.com
Sat Dec 6 08:57:34 UTC 2008
I tried a re-scan and I ended up with duplicates - the new ones where
the right ones.
So an alternative untested by me approach might be to delete and re-scan.
I try to avoid doing that as I then usually delete most of the non
mainstream channels. Plus I knew that 95% of mine worked.
We've been living without ITV3 for years, but some custume drama thing
last night was apparently worth the interuptions to fix/record.
Myth now has a slightly higher WAF here. Although I think WAF should
be renamed FAF (Family) as it is now essential for chilrens TV and
DVD's too apparently.
Thank Nick.
Greg
2008/12/6 Nick Morrott <knowledgejunkie at gmail.com>:
> On 05/12/2008, Greg Cope <gregcope at gmail.com> wrote:
>> Hi All,
>>
>> Just a post to help those who may be having issues with Freeview
>> (DVB-T) reception in the UK (or elsewhere) where some channels that
>> may not work under MythTV but work in other setups (ie scan sees
>> them). This may happen with the channels have been moved/reconfigured
>> by providers.
>>
>> I have solved this issue by re-scan(ing) and comparing the last line
>> with what mythtv channel scanned.
>>
>> For example ITV3 did not work for me - It never Locked, and gave L_S
>> (instead of LMS)[1] - ie nearly there.
>>
>> Find the channel ID of the channels you have issues with (hint select
>> * from channel;)
>>
>> How to fix;
>> - Stop mythbackend
>> - rescan;
>> scan /usr/share/doc/linuxtv-dvb-apps-1.1.0/examples/scan/dvb-t/uk-Midhurst
>> > channels.conf
>> - Check myconverge DB for channels with issues eg;
>> mysql> select serviceid from channel where chanid='1010';
>> +-----------+
>> | serviceid |
>> +-----------+
>> | 8304 |
>> +-----------+
>> - Check channels.conf file;
>> grep ITV3 channels.conf
>> ITV3:826167000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:540:541:8294
>>
>> ** Notice that the last line has a different number **
>>
>> mysql> update channel set serviceid=8294 where chanid='1010';
>> Query OK, 1 row affected (0.00 sec)
>>
>> - restart mythbackend
>>
>> - try live tv and switching to the channel.
>
> Also note that if a channel moves multiplex, you will also need to
> update the value stored in mythconverg.channel.mplexid to point to the
> correct multiplex details stored in the mythconverg.dtv_multiplex
> table.
>
> It may well be possible to achieve all of this with the DVB scanner in
> mythtv-setup by rescanning existing multiplexes to pick up the
> new/deleted channels, but I can't vouch for its stability.
>
> Nick
>
> --
> Nick Morrott
>
> MythTV Official wiki:
> http://mythtv.org/wiki/
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>
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