Right. The "Linux" mapping is different from the ADB mapping. See
/usr/include/linux/input.h for keycodes to use there.
For all the gory details:
http://homepages.munich.netsurf.de/Franz.Sirl/inputppc.html
I know, very confusing, lots of breakage for a potato upgrade, etc.
Apologies for
the headache, the decision apparently seemed like a good one at the
time. In the
long term, everyone will make the change anyway, but perhaps the
Debian PPC kernels
should have waited for other packages to catch up (e.g. makedev, bug #87854).
HTH,