Yay! It would seem that with the latest updates to the xc3028 tuner driver, my DViCO Fusion Dual Digital 4 (USB id 0fe9:db78) can use the newest drivers again.

Up to my last attempt at tracking the newest drivers, loading them would cause a system hardlock, which isn't particularly helpful on a PVR. Well, whilst the olympics were on I don't suppose it mattered that much. Komkommertijd, as we say in Holland.

I have not as of yet attempted to re-tune the system to see what's going on with tuner #0. It seems to not be able to record anything these days, even though tuner #1 is fine.

A quick update from mythtv land. It would seem that as of about two weeks ago, my DViCO Dual Digital 4 card is officially supported.

I just pulled the latest drivers out of mercurial and it seems tuning speeds have been much improved since I did my last update somewhere near the start of January.

Small tweak, the driver is now called tuner_xc2028 and not xc3028-fe.

After over a year of using myth on my laptop (which has tv out) to view video files on tv, I now have an honest-to-god working mythtv setup with dual tuners, remote control and everything.

For my birthday I obtained a DViCO FusionHDTV DVB-T Dual Digital 4, after doing a spot of googling about Linux compatibility. This is a PCI card that, after plugging in, is detected as two USB tuners and an input device.

Hardware 

I had scrounged together a pile of hardware from various defunct machines in the house and been given a mobo by a friend (Thanks Steve!) The system is an Athlon64 2800+ with 512Mb ram, a fanless nvidia FX5200 with an RCA tvout connector and an 80Gb harddisk. (Though all recording is done to a 500GB LVM volume in another room via NFS over 100baseT)