[mythtv-users] FireWire works, but now the hard part- front end crashes

Ryan Allen ryan at the-summit.net
Tue Nov 6 18:47:30 UTC 2007

I exchanged my STB for the Motorolla DCH3200, because I needed FireWire
out.  Comcast is really good about that.

After reading the wiki here http://mythtv.org/wiki/index.php/FireWire
and playing with the Firewire settings, I found that I had much better
reliability on node 1 then node 0 on the STB.  Cool!  I am getting a

So, I noticed channel scanning is not supported for FireWire connections,
and I understand that not all channels are output on the FireWire, so now
begins the tedious part.  While watching live TV, I have to change to
every channel and wait a few seconds to see if I get output.

IF there is no output (blank screen), the front end crashes.  This is
the error on mythbackend (which stays up):

    2007-11-06 00:36:20.382 TVRec(3): Changing from None to WatchingLiveTV
    2007-11-06 00:36:20.389 TVRec(3): HW Tuner: 3->3
    channel changing 661
    2007-11-06 00:36:21.455 ret_pid(10215) child(10215) status(0x0)
    2007-11-06 00:36:21.458 External Tuning program exited with no error
    libiec61883 warning: Overlayed connection on channel 1.
    You may need to manually set the channel on the receiving node.
    2007-11-06 00:36:21.497 FireRec: Buffered packets 2000 (8000 KB)
    2007-11-06 00:36:28.001 TVRec(3): Changing from WatchingLiveTV to None
    2007-11-06 00:36:36.506 FireRec: No Input in 15 seconds [P:0 N:1] (select)
    2007-11-06 00:36:36.519 Finished recording HD Videos: channel 1661
    2007-11-06 00:36:36.531 MythSocket(822c4a8:-1): writeStringList:
    Error, socket went unconnected.

I foolishly didn't capture the output of the frontend, I'll be able to
do that tonight. 

Is this a known issue?  What are others FireWire experiences out there?
Are there other resources out there I can read?  

Also, Is there an easier way to scan for known good channels?

This is with knoppmyth R5F27:
 mythfrontend --version
 Library API version     : 0.20.20070821-1
 Source code version     : 14463M
 SVN Branch              : branches/release-0-20-fixes
 Options compiled in:
  linux release using_xvmcw using_v4l using_oss using_alsa using_arts
  using_jack using_ivtv using_firewire using_dbox2 using_hdhr
  using_ip_rec using_freebox using_live using_lirc using_joystick_menu
  using_dvb using_x11 using_xv using_xrandr using_xvmc using_xvmc_vld
  using_opengl_vsync using_opengl using_frontend using_backend



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|  http://www.the-summit.net  |

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