[mythtv-users] three questions with DVB-T

Matt Harrison iwasinnamuknow at genestate.com
Tue Apr 5 20:03:37 UTC 2011

On 05/04/2011 12:46, Ian Barton wrote:
> On 05/04/11 01:39, Matt Harrison wrote:
>> 1) Sometimes after not running live tv or recording for a while (seems
>> pretty random), I cannot get a lock on any channel. A mixture of
>> reboots, rescans (or just doing something else for an afternoon) _might_
>> fix it, or might not. If I do run a rescan, the signal strength will be
>> good and channels will be detected, I just wont be able to lock them.
> Some cards load their firmware from the computer. If you do a warm boot,
> the card firmware may not be properly re-initialized. It's worth taking
> out the mains lead for 30 seconds or so, which should force the card's
> firmware to be reloaded from disk.

Well I've done some more fiddling and it seems that this is indeed the 
case. While my tuners may be supported and compatible, they are somewhat 
flakey. Occasionally it seems I am just going to have to power down and 
unplug for a while, either that or buy new tuners. I can live with it, 
it's not a big problem for me.

The main problem right now is the guide data (EIT?). I've tried 
everything to get it to correct itself but I am stumped. The guide data 
for some channels is just blank. Some channels are using the guide data 
from completely unrelated channels and some just seem to be making it up.

I've retuned several times, fiddled with every setting and I'm still 
stuck with it. It's almost unusable like this. I would try nuking the 
database but I'm not used to mythbuntu and don't want to fiddle with the 
mysql install on it.

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