This is actually with kudzu-1.1.14-1 out of dist-10-scratch.  Something seems to
have broken with the video card probe output formatting.

Run this program:

#!/usr/bin/python2.2
import kudzu
cards = kudzu.probe(kudzu.CLASS_VIDEO, kudzu.BUS_UNSPEC, kudzu.PROBE_ALL)
print cards

And then look at the output of the "Driver:" line.  It has the "Card:" line
where the driver in the "Driver:" line should be.

[Desc:           nVidia Corporation|NV5 [RIVA TNT2/TNT2 Pro]
Driver:         Card:RIVA TNT2
Device:         None
, Desc:           Texas Instruments|TVP4020 [Permedia 2]
Driver:         Card:3Dlabs Permedia2 (generic)
Device:         None
]