I'm running MythDora on a custom built pc (asus a7n8x-x mobo) with an ATI TV Wonder Pro tv card. Whenever I try to scan the channels in MythTV (mythtv-setup to be more exact)it keeps saying "Failed to open card." I'm pretty sure that the bttv drivers work because when I type dd if=/dev/video0 of=/home/mythtv/test I get the response:
74700+0 records in
74700+0 records out

I set the parameters for bttv using modprobe bttv card=63 tuner=44. my dmesg shows:

ACPI: PCI interrupt for device 0000:01:08.0 disabled
cx2388x v4l2 driver version 0.0.5 loaded
cx2388x: snapshot date 2005-11-09
ACPI: PCI Interrupt 0000:01:08.0[A] -> Link [LNK3] -> GSI 11 (level, low) -> IRQ 11
CORE cx88[0]: subsystem: 1002:00f8, board: ATI TV Wonder Pro [card=4,autodetected]
TV tuner 44 at 0x1fe, Radio tuner -1 at 0x1fe
tda9887 2-0043: chip found @ 0x86 (cx88[0])
cx88[0]/0: found at 0000:01:08.0, rev: 5, irq: 11, latency: 32, mmio: 0xe2000000
tuner 2-0060: All bytes are equal. It is not a TEA5767
tuner 2-0060: chip found @ 0xc0 (cx88[0])
tuner 2-0060: type set to 44 (Philips 4 in 1 (ATI TV Wonder Pro/Conexant))
cx88[0]/0: registered device video0 [v4l2]
cx88[0]/0: registered device vbi0
bttv: driver version 0.9.16 loaded
bttv: snapshot date 2005-11-09
bttv: using 8 buffers with 2080k (520 pages) each for capture

Thanks,
Jake