Hauppauge hvr-2200 stops working when Hauppauge hvr-1110 is connected

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Hello,

I am using Mythbuntu 10.04 and have linux-firmware-nonfree from:
https://bugs.launchpad.net/ubuntu/+source/linux-firmware-nonfree/+bug/579783

I have been happily using Mythbuntu with a Hauppauge hvr-2200 dual tuner
DVB-T for many months (thanks Steven Toth!) and it records all my TV in
MythTV.

NZ has three DVB-T multiplexes, so I bought a second single-tuner DVB-T
card, a Hauppauge hvr-1110, to cover the third multiplex and mean that,
with multirec, I can record all channels and never hit a conflict.

As I say, the hvr-2200 works really well. When I put the hvr-1110 in
(and install the non-free firmware linked above), the hvr-1110 registers
as an adapter and plays TV well as well.

Unfortunately, when I have both cards in with their firmware, the
hvr-1110 stops the hvr-2220 registering its two adapters. Dmesg is
attached to my Launchpad bug here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/621578
I have now (before reporting the bug) removed the hvr-1110 so that I am
back to my working dual-tuner hvr-2200 configuration.

Interestingly to me, when I only have the hvr-2200 firmware installed,
but with both cards in the machine, all three adapters register (create
/dev/dvb/ nodes), but clearly only the hvr-2200 adapters actually work.

Any suggestions would be greatly appreciated. I saw some things in dmesg
about IRQ conflicts, but I really have no idea.

Regards,

Aaron
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