[mythtv-users] firewire channel change: could not set port

[Dave Badia]

Hi list -
I am trying to migrate from satellite to cable.  My first step is to get
firewire channel change working with the scientific atlanta 4240 cable
box.  I've installed a pci-e firewire card and am running the sa4250_ch.c
script from the wiki (http://www.mythtv.org/wiki/Sa4250_ch_guid).

My problem is that when I run the script I always get "could not set port":
./sa4250_ch -v -k 123
ERROR-- could not set port: Invalid argument

Here is the relevant output from plugreport
sudo plugreport
Host Adapter 0
==============

Node 0 GUID 0x0011066600000068
------------------------------
libiec61883 error: error reading oMPR
libiec61883 error: error reading iMPR

Node 1 GUID 0x0022cec9c0540000
------------------------------
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


Here is the relevant output from lspci:

04:00.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6315 Series Firewire
Controller (rev 01) (prog-if 10 [OHCI])
        Subsystem: VIA Technologies, Inc. VT6315 Series Firewire Controller
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at fdcff000 (64-bit, non-prefetchable) [size=2K]
        I/O ports at 9c00 [size=256]
        Capabilities: [50] Power Management version 3
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable+ 64bit+
        Capabilities: [98] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [130] Device Serial Number 00-11-06-ff-ff-00-00-68
        Kernel driver in use: firewire_ohci

Any help is greatly appreciated!

Thanks
Dave
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