[mythtv-users] What to expect when you're expecting FireWire

Ryan Steffes rbsteffes at gmail.com
Tue Jan 8 02:39:22 UTC 2008


I've just recently made the jump to digital cable when I worked out
that I could save $3 a month with a bundled cable/internet promotion
Time Warner was running here in Raleigh.  Since I don't have an HDTV,
I'm more or less intellectually satisfied with using an IR Blaster and
capturing from SVideo.  I wanted to try getting the firewire interface
working first though, but what I quickly discovered is that there's
not a lot of leeway in between working and not working.

The box seems to be detected fine, which actually is what's confusing
me.  If it wasn't being detected AT ALL, I'd just say the ports
weren't working and debate going to raise a fuss.

Upon plugging in, dmesg shows:

ieee1394: Node added: ID:BUS[0-01:1023]  GUID[001cea0a3cc20000]
ieee1394: raw1394: /dev/raw1394 device initialized
ieee1394: Node suspended: ID:BUS[0-01:1023]  GUID[001cea0a3cc20000]
ieee1394: Node resumed: ID:BUS[0-01:1023]  GUID[001cea0a3cc20000]


plugreport shows:

Host Adapter 0
==============

Node 0 GUID 0x000199000009e2bd
------------------------------
libiec61883 error: error reading oMPR
libiec61883 error: error reading iMPR

Node 1 GUID 0x001cea0a3cc20000
------------------------------
oMPR n_plugs=1, data_rate=2, bcast_channel=63
oPCR[0] online=1, bcast_connection=0, n_p2p_connections=0
        channel=0, data_rate=0, overhead_id=0, payload=146
iMPR n_plugs=0, data_rate=2

But test-mpeg2 just gives:

 libiec61883 warning: Overlayed connection on channel 0.
You may need to manually set the channel on the receiving node.
Starting to receive

and sits until I kill it.

And firewire_tester just gives a long string of fail:
./firewire_tester -n 1 -p -r 10
Action: Test P2P connection 10 times, node 1, channel 1
P2P: Testing...Failed
P2P: Testing...Failed
P2P: Testing...Failed
P2P: Testing...Failed
P2P: Testing...Failed
P2P: Testing...Failed
P2P: Testing...Failed
P2P: Testing...Failed
P2P: Testing...Failed
P2P: Testing...Failed

Any suggestions while I wait on the ir blaster I ordered to arrive?


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