[mythtv-users] Can't watch live TV over firewire

Noah Swint nswint at hotmail.com
Sun Sep 23 16:18:34 UTC 2007

I added this to /etc/rc.local.  Occasionally, (every 5 recordings or so)
I have to swap the tuners on my DCT-3416 with a button that I've mapped
on my remote..
Try this and change it accordingly to the node and port that your
firewire connection might be.  then run the firewire tester script 
(firewire_tester -B -P 0 -n 1 -r 1) and restart your the backend that
has your firewire connector.

#!/bin/sh -e
# rc.local
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
# In order to enable or disable this script just change the execution
# bits.
# By default this script does nothing.

/bin/chown mythtv:mythtv /dev/raw1394
/usr/bin/plugctl -n 1 oPCR[0].n_p2p_connections=0
/usr/bin/plugctl -n 1 oPCR[0].bcast_connection=0
/usr/bin/plugctl -n 1 oPCR[0].data_rate=2
/usr/bin/plugctl -n 1 oPCR[0].channel=0
/usr/bin/plugctl -n 1 oPCR[0].n_p2p_connections=1

exit 0

Matt Emmott wrote:
> I've been running Mythdora 4.0 with 0.20.2 for a couple weeks now.
> Today I picked up a Scientific Atlanta 3250HD hi-def box from Charter.
> I installed a PCI Firewire card in the machine today and was able to
> 'talk' to the STB using the firewire_tester binary in the contrib
> folder. I set up the firewire port as a tuner card in Myth but was
> having trouble switching tuners while watching live tv, so I blew away
> my main tuner in mythtv setup (A PVR-150). Now, when I select Live TV
> I see the STB change to channel 560, but after a few seconds I'm
> dumped back to the main mythtv screen. The errors in the terminal
> include the following:
> 2007-09-23 01:10:29.452 RingBuf(/storage/1000_20070923011022.mpg):
> Invalid file (fd -1) when opening '/storage/1000_20070923011022.mpg'.
> 2007-09-23 01:10:29.458 NVP::OpenFile(): Error, file not found:
> /storage/1000_20070923011022.mpg
> 2007-09-23 01:10:29.458 TV Error: StartPlayer(): NVP is not playing
> after 20000 msec
> 2007-09-23 01:10:36.460 MythSocket(90cbbd0:19): readStringList: Error,
> timeout (quick).
> 2007-09-23 01:10:36.460 RemoteEncoder::SendReceiveStringList(): No
> response.
> Is it that myth isn't getting a response from the firewire port, or
> something else? I'm not sure where to go from here.
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