Xubunut 11.10 and Kodicom 4400R - camera not working.

[corkypa]

I have ZoneMinder 1.25 running on a freshly install xubuntu 11.10 x64, having followed the directions for the Ubuntu 11.10 server install on the wiki. I'm running on an Atom-based Intel BOX525MW dual processor board with a Kodicom 4400R clone. Zoneminder installed without a hitch, but I can't get access to a camera. Xawtv fails with

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This is xawtv-3.95.dfsg.1, running on Linux/x86_64 (3.0.0-14-generic)
looking for available devices
port 91-106
    type : Xvideo, image scaler
    name : Intel(R) Textured Video

port 107-107
    type : Xvideo, image scaler
    name : Intel(R) Video Overlay

/dev/video0: No such device or address
/dev/video1: No such device or address
/dev/video2: No such device or address
/dev/video3: No such device or address

Backing up a little bit, dmesg shows

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[    4.542887] bttv: driver version 0.9.18 loaded
[    4.542897] bttv: using 16 buffers with 2080k (520 pages) each for capture
[    4.543044] bttv: Bt8xx card found (0).
[    4.543113] bttv 0000:06:0c.0: PCI INT A -> GSI 20 (level, low) -> IRQ 20
[    4.543125] bttv0: can't request iomem (0x0).
[    4.543143] bttv: probe of 0000:06:0c.0 failed with error -16
[    4.543162] bttv: Bt8xx card found (0).
[    4.543200] bttv 0000:06:0d.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21
[    4.543209] bttv0: can't request iomem (0x0).
[    4.543223] bttv: probe of 0000:06:0d.0 failed with error -16
[    4.543242] bttv: Bt8xx card found (0).
[    4.543265] bttv 0000:06:0e.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
[    4.543273] bttv0: can't request iomem (0x0).
[    4.543286] bttv: probe of 0000:06:0e.0 failed with error -16
[    4.543306] bttv: Bt8xx card found (0).
[    4.543330] bttv 0000:06:0f.0: PCI INT A -> GSI 23 (level, low) -> IRQ 23
[    4.543340] bttv0: can't request iomem (0x0).
[    4.543353] bttv: probe of 0000:06:0f.0 failed with error -16

I don't know if those failures are the cause of the problem, or not. I have tried doing "modprobe bttv gbuffers=16 card=133,132,133,133", and, when that didn't work, I created /etc/modprobe.d/bttv.conf containing the single line:

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modprobe bttv gbuffers=16 card=133,132,133,133

but that works no better. This card was working in a ZoneMinder installation a year or two ago, so it ought to work.

Am I missing something simple here?