My guess is that the new input hotplugging magic selects the wrong driver for the uinput device.
If I add a section (this might already be there, not sure anymore)
Section "InputDevice" Identifier "Generic Keyboard" Driver "kbd" Option "XkbRules" "xorg" Option "XkbModel" "pc105" Option "XkbLayout" "us" EndSection
to my xorg.conf and then enable it by adding a line
InputDevice "Generic Keyboard"
to the "ServerLayout" section, the fingerprint reader works as before.
My guess is that the new input hotplugging magic selects the wrong driver for the uinput device.
If I add a section (this might already be there, not sure anymore)
Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection
to my xorg.conf and then enable it by adding a line
InputDevice "Generic Keyboard"
to the "ServerLayout" section, the fingerprint reader works as before.