[mythtv-users] Myth can't use two M179 cards at the same time

[Woody Sturges]

I have an Athlon SMP machine with two M179 cards.  I'm having trouble
when MythTV tries to use both cards at the same time.  I've done the
following debugging:

modprobe ivtv
(fine)

cat /dev/video0 > test0.mpg
(fine)

cat /dev/video1 > test1.mpg
(fine)
(Can even cat both devices at the same time...)

mythbackend
(fine)

Watch TV (/dev/video0)
(fine)

Record something on /dev/video0, watch live TV (/dev/video1)
(error!)  The recording works just fine, but live TV throws 'Input
Errors':

>From the backend:
2004-05-03 19:30:51 Changing from None to WatchingLiveTV
error reading from: /dev/video1
read: Input/output error

>From the frontend:
taking too long to be allowed to read..

>From messages:
May  3 19:30:07 localhost kernel: saa7115[14]: decoder set size
May  3 19:30:07 localhost kernel: Hpsc: 0x00001, Hfsc: 0x00600
May  3 19:30:07 localhost kernel: Setting full NTSC height
May  3 19:30:51 localhost kernel: saa7115[15]: decoder set size
May  3 19:30:51 localhost kernel: Hpsc: 0x00001, Hfsc: 0x00600
May  3 19:30:51 localhost kernel: Setting full NTSC height
May  3 19:30:54 localhost kernel: ivtv: Timeout waiting for data!

Here's my modules.conf:
# ivtv modules setup
alias char-major-81 videodev
alias char-major-81-0 ivtv
alias char-major-81-1 ivtv
options ivtv ivtv_debug=1 mpg_buffers=90
options tuner type=2  # NTSC tuner
options msp3400 once=1 simple=1
add below ivtv msp3400 saa7115 tuner

Argh!  Anyone else run into this problem?

Thanks for any help...
Woody