[mythtv-users] Channel tuning broken in 0.24

[Igor Cicimov]

On Fri, Jun 1, 2012 at 9:41 AM, Michael Watson <
michael at thewatsonfamily.id.au> wrote:

> On 31/05/2012 3:42 PM, Igor Cicimov wrote:
>
>> On Thu, May 31, 2012 at 3:20 PM, Michael T. Dean <mtdean at thirdcontact.com<mailto:
>> mtdean at thirdcontact.**com <mtdean at thirdcontact.com>>> wrote:
>>
>>    On 05/31/2012 12:53 AM, Michael Watson wrote:
>>
>>        On 31/05/2012 11:45 AM, Igor Cicimov wrote:
>>
>>            I noticed that after upgrade to Mythtv 0.24 the channel
>>            tuning is awful. I'm using Leadtek DVB-T DTV2000H (using
>>            the digital receiver only) and the card was working fine
>>            for years on 0.20 and later for couple of months on
>>            0.23-fixes. After upgrade to 0.24-fixes it can't scan half
>>            of the DVB-T channels in Sydney and recording on it is
>>            practically impossible. The distro is Mythbuntu 10.04 with
>>            the latest kernel from the repo (which I think is 2.6.35
>>            but not sure I'm not at home now to check).
>>
>>            What has changed in Mythtv to affect this card so badly?
>>            Anything I can do to improve the performance? And yes, I
>>            tried deleting all the cards,inputs,sources etc in the
>>            backend and recreating again but no changes. Or maybe the
>>            kernel driver cx88xx in the latest kernels does not play
>>            good with this card any more?
>>
>>            Before rolling back to 0.23 I'll try to check the card
>>            performance outside Mythtv. In meantime, any suggestions
>>            to solve this highly appreciated.
>>
>>        I had to increase the Tuning Timeout.  3000ms seemed to work
>>        well for me in Melbourne.
>>
>>
>>    Good advice.  I highly recommend a minimum of 3000ms/5500ms for
>>    tuning and signal timeouts.
>>
>>    Mike
>>
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>>
>> Yep that's also one thing that I tried. I had them set to 6s and 10s
>> respectively which didn't happened at all, it just made scanning the whole
>> channel range last longer.
>>
>> Any other ideas? I'll try 0.25-fixes tonight if I have some time, I've
>> read the LiveTV has been much improved in this release.
>>
>> Thanks,
>> Igor
>>
>>  When C31 first went digital, I was unable to successfully scan using
> mythtv, in order to get it to scan, I had to use w_scan to create an
> 'initial tuning-data' file, then use scan (from dvb-utils) to create a
> channels.conf file, then import the channels.conf file into MythTV.  Once
> this process was complete, it all worked fine.   But at some point there
> was an issue with channels.conf import into MythTV I believe, not sure if
> it has been fixed or not in 0.24.
>
> Another option, if you have another card, is to use the non Leadtek card
> to do the channel scan, and connect the Leadtek to the same video source.
>
> Michael
>
>
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Hi Michael,

How do you import the channels.conf file into MythTV?

Thanks,
Igor
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