disable the active EIT scan for open on demand DVB cards

[Janne <janne-mythtv@…>]

Daniel, I've seen that you haven't applied similar code in #437.

Don't using a dvb card marked as open on demand for active eit scan seems more logical than using it all the time.

I started again on making the eit scanner global. So we will be soon able to scan only occasionally. But it will take one or two weeks till it is finished.

Due to a hardware or driver bug in the dual tuner card Hauppauge Nova-T 500 there is some demand to disable the active eit scan for one frontend of this card. Some reports suggest that a specific pattern of tuning commands can cause a usb disconnect. The disconnect is a nasty error since neither the dvb subsystem nor mythtv are hotplugable. The backend is a zombie after a disconnect and the kernel needs a reboot.

We had also occasionally request to make dvb_on_demand useable with activated EIT.

I don't think there is a great need to apply this patch now. But I added a database update which disables dvb_on_demad for each card wconnected to a useeit videosource.

References #1035

[danielk]

I think we can wait a couple weeks for comprehensive solution. :)

We can point Nova-T 500 users to this ticket in the meantime, but I'm closing it since I would only want to apply something like this if we can't get a proper solution working before the next release.

[Janne Grunau]

same patch for 0.20-fixes

[stuartm]

Updated patch against 13045

[Janne Grunau]

Add an option to disable active eit scan per dvb device

[Janne Grunau]

[disable_active_eitscan.diff ​http://svn.mythtv.org/trac/attachment/ticket/2741/disable_active_eitscan.diff] adds a per dvb card option to disable active eit scan.

[Janne Grunau]

(In [15730]) Adds option to disable active eit scan for DVB cards

Some dibcom based usb devices (including the Nova-T500) have a nasty bug which is mostly triggered by our continuous eit scanning. The card becomes useless until the device nodes are closed and reopened. Implementing a recovery function in MythTV would be mess since dual tuner cards are affected and we would need to close both adapters simultaneously. Fixes #2741.

[Janne Grunau]

(In [15735]) fix typo in [15730]

missing comma in database query probably broke firewire and dbox2 recorders. Refs #2741

[anonymous]

Replying to Janne <janne-mythtv@grunau.be>:

I started again on making the eit scanner global. So we will be soon able to scan only occasionally. But it will take one or two weeks till it is finished.

Hi, just updating this ticket to cross-reference to my enhancement ticket #5754 where I supply a patch to make active EIT scan only occasionally. It looks like you were intending to add this kind of functionality so it may save you some time. Best regards, Simon.