[mythtv-users] Fwd: backend (?) crash

Klaas de Waal klaas.de.waal at gmail.com
Mon Feb 22 11:56:41 UTC 2021

On Sat, 20 Feb 2021 at 10:13, Klaas de Waal <klaas.de.waal at gmail.com> wrote:

> On Sat, 20 Feb 2021 at 00:08, Klaas de Waal <klaas.de.waal at gmail.com>
> wrote:
>> Your frontend log shows that it cannot connect to the backend, otherwise
>> it is OK.
>> Your backend log fragment shows that it wants to create a new virtual
>> tuner for a multirec recording but that this fails. This should not happen.
>> To get to the bottom of this a lot more information would be needed, such
>> a complete backend log and a dump of some database tables.
>> You can create a Github issue and then you can attach bigger log files
>> than you can with the mailing list.
>> For the time being I suggest to:
>> - check that your database is correct by running optimize_mythdb.pl
>> - run the latest updated version, e.g. v31/fixes
>> You can also with mythtv-setup:
>> - delete all capture cards
>> - create new capture cards
>> - connect them to the video source
> Reason is that your backend issue could be caused by a corrupt capturecard
>> table.
> If the error is related to a capture card that does convert external video
> signals such as a HD-PVR then it can be a configuration issue.
> In mythtv-setup look at page Input Connections / Interaction between
> Inputs
> For a HD-PVR the "Max Recordings" should be 1 and the  "Schedule as Group"
> should be unchecked.

It looks like that for the HD-PVR the "Max Recordings" and "Schedule as
Group" configuration items are missing.
The default values are not correct for the HD-PVR. This is a bug.
Until this is fixed changing the configured values in the database needs
some SQL.

If my analysis is correct then your backend will fail when you have
scheduled two (or more) simultaneous recordings from the same multiplex;
the recordings are then scheduled on the same HD-PVR.
Can you please try this?

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