Compare your output the listed modules on the LinuxTV site. Then modprobe any that are missing;
All the modules are there - or at least those that relate to my hardware. There are some differences, but if I ModProbe them, they appear in the list and are shown as not used by anything.
The card is working, I think - that is, I don't think it's an installation problem. I tried going into Myth backend setup and setting up the card. Some of the options, like V4L show the card as being detected. More significant, however, is the fact that the V3 DVB option reports the card as being busy. I think what is happening is that VDR has opened and locked the card, but can't display any channels because I don't have a channel conf file. And because VDR has locked the card, I can't scan to create the channel list. Does that theory sound right or am I barking up the wrong tree? Or am I off my tree?
The other thing is - am I even using the scan command correctly. I'm using scan -o vdr, but shouldn't I be saying what card to use to scan? After all, I could conceivably have both a DVB-T and a DVB-S card in there. (I don't, though)