[mythtv-users] Firewire 1394 Still Not Working

[Scott Clark]

On 3/25/06, Mike Smith <easygreenus at yahoo.com> wrote:
>
> Hi,
>
> I'm running mythtv 18.2 on a Mandriva 2006 system.
>
> I have been trying for months to get the Firewire
> Capture
> working.  I have firewire ports on my Asus
> motherboard.
> Could not get it working and when I heard Jarod could
> not get his to work,  I bought a Firewire card that
> was reported to work.
>
> Still could not get it to work.  Apparently the
> ieee1394 drivers we are using has difficulties when
> multiple firewire cards are present.  So, I turned
> the firewire built into my motherboard off in bios.
> Unfortunately, that also disabled my gigabit ethernet
> connections.  I worked with Asus to get a BIOS upgrade
> to fix this, so I'm ready to try again.
>
> I have the Scientific Atlanta 3250HD ( SA3250HD ) from
> Time Warner Cable in Cincinnati.  I can connect the
> firewire port to my TV and watch high def television
> from it.  So, the port is there,  AND its turned on.
>
> I connect it to my computer via the PCI firewire card.
> /var/log/messages reports:
> Mar 25 14:41:17 lbk kernel: ohci1394: $Rev: 1250 $ Ben
> Collins <bcollins at debian.org>
> Mar 25 14:41:17 lbk kernel: ohci1394: fw-host0:
> OHCI-1394 1.1 (PCI): IRQ=[21]
> MMIO=[d3dfe800-d3dfefff]  Max Packet=[4096]
> Mar 25 14:41:17 lbk kernel: ohci1394: fw-host1:
> OHCI-1394 1.1 (PCI): IRQ=[17]
> MMIO=[d3dff800-d3dfffff]  Max Packet=[2048]
> Mar 25 14:41:17 lbk kernel: ieee1394: raw1394:
> /dev/raw1394 device initialized
>
> dmesg shows:
>
> ieee1394: Initialized config rom entry `ip1394'
> ohci1394: $Rev: 1250 $ Ben Collins
> <bcollins at debian.org>
> ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[17]
> MMIO=[d3dff800-d3dfffff]  Max Packet=[2048]
> ieee1394: raw1394: /dev/raw1394 device initialized
> ieee1394: Node added: ID:BUS[0-00:1023]
> GUID[000f2142f10c0000]
> ieee1394: Host added: ID:BUS[0-01:1023]
> GUID[00d0035600b17934]
>
> Plugreport shows:
>
> Host Adapter 0
> ==============
>
> Node 0 GUID 0x000f2142f10c0000
> ------------------------------
> oMPR n_plugs=1, data_rate=2, bcast_channel=63
> oPCR[0] online=1, bcast_connection=0,
> n_p2p_connections=1
>         channel=0, data_rate=2, overhead_id=0,
> payload=146
> iMPR n_plugs=0, data_rate=2
>
> Node 1 GUID 0x00d0035600b17934
> ------------------------------
> libiec61883 error: error reading oMPR
> libiec61883 error: error reading iMPR
>
>
> I create a connection in mythtv-setup for firewire
> using Node=0 and port=0.  I pre-tune the cable box
> to a high def broadcast channel ( 912 ) and try
> to watch LiveTV in Myth.  I get the following
> in the mythbackend.log file:
>
> 2006-03-25 19:23:56.022 Changing from None to
> WatchingLiveTV
> 2006-03-25 19:23:56.027 Firewire: Initializing Port:
> 0, Node: 0, Speed: 100Mbps
> 2006-03-25 19:23:56.029 Firewire: Creating P2P
> Connection with Node: 0
> libiec61883 warning: Overlayed connection on channel
> 0.
> You may need to manually set the channel on the
> receiving node.
> 2006-03-25 19:23:56.044 Firewire: Created Channel: 0,
> Bandwidth Allocation: 0
> 2006-03-25 19:23:56.045 Firewire: Changing Speed
> 200Mbps -> 100Mbps
> 2006-03-25 19:24:11.047 Firewire: No Input in 15
> seconds [P:0 N:0] (select)
> 2006-03-25 19:24:11.073 Couldn't read data from the
> capture card in 15 seconds. Stopping.
> 2006-03-25 19:24:11.102 Changing from WatchingLiveTV
> to None
> 2006-03-25 19:24:11.104 Firewire: releasing
> iec61883_mpeg2 object
> 2006-03-25 19:24:11.106 Firewire: disconnecting
> channel 0
> 2006-03-25 19:24:11.114 Firewire: releasing raw1394
> handle
>
>
> Sorry for the long post.  I know people have this
> working.  I know Time Warner in Cincinnati is
> delivering content via the firewire.  I just can't
> get my particular installation working.
>
> Hopefully, someone can suggest the next step.  I'm
> out of ideas.
>
> Thanks,
>
> Mike
>
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Hey Mike,

Is the `test-mpeg2` program working? It's obvious you have output via
firewire from your sa3250hd but can your computer get that data from it on
Mandriva? I too have TWC but in Southern California. I have SA3250HD via
firewire working nicely as well. But first things first, before you worry
about mythtv and recording via firewire make sure you are able to capture
the mpeg2 stream using the test-mpeg2 program that comes with I believe
raw1394 library. Also you should read the release notes on newer versions of
mythtv that improve firewire recording by setting buffer limits(both
ringbuffer and firewire buffer) as it may be something you'll need to look
into after getting test-mpeg2 working.

-Scott
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