[mythtv-users] Firewire capture locking backend

[Gerald Brandt]

----- Original Message -----
> From: "Gerald Brandt" <gbr at majentis.com>
> To: "Discussion about MythTV" <mythtv-users at mythtv.org>
> Sent: Sunday, May 13, 2012 1:40:11 AM
> Subject: [mythtv-users] Firewire capture locking backend
> 
> Hi,
> 
> When I'm watching live tv, if I change the channel 3 times, on the
> third time, I get a video timeout.  Trying to go back to live tv
> tells me the tuner is already in use.
> 
> When I boot the system, plugreport gives me:
> 
> Node 1 GUID 0x0023a3fffe5308c7
> ------------------------------
> oMPR n_plugs=1, data_rate=2, bcast_channel=63
> oPCR[0] online=1, bcast_connection=0, n_p2p_connections=0
> 	channel=63, data_rate=0, overhead_id=0, payload=376
> iMPR n_plugs=0, data_rate=2
> 
> Node 2 GUID 0x002210fffe57348f
> ------------------------------
> oMPR n_plugs=1, data_rate=2, bcast_channel=63
> oPCR[0] online=1, bcast_connection=0, n_p2p_connections=0
> 	channel=62, data_rate=0, overhead_id=0, payload=376
> iMPR n_plugs=0, data_rate=2
> 
> 
> After a tuner/mythbackend lockup, plugreport gives me:
> 
> Node 1 GUID 0x0023a3fffe5308c7
> ------------------------------
> oMPR n_plugs=1, data_rate=2, bcast_channel=63
> oPCR[0] online=1, bcast_connection=0, n_p2p_connections=0
> 	channel=62, data_rate=0, overhead_id=0, payload=376
> iMPR n_plugs=0, data_rate=2
> 
> Node 2 GUID 0x002210fffe57348f
> ------------------------------
> oMPR n_plugs=1, data_rate=2, bcast_channel=63
> oPCR[0] online=1, bcast_connection=0, n_p2p_connections=1
> 	channel=2, data_rate=1, overhead_id=0, payload=376
> iMPR n_plugs=0, data_rate=2
> 
> Im my case, node 1 was alredy recording, and node 2 was supposed to
> do livetv.  Plug report shows the firewire info chnaging.  Why does
> MythTV keep changing from broadcsat to P2P at every channel change,
> and why does it get stuck there?
> 
> Gerald

It actually seems that something in mythtv is switching the firewire to p2p mode on every channel change, and then going back to broadcast.  On the third channel change, it gets stuck in p2p for awhile.

Gerald