Hi,

just upgraded my kubuntu distribution to 9.04 and the app I'm writting no longer receives tablet events .

Seems X.org is undergoing a transition to hot-pluggable HAL controlled input devices and away from the static configuration in xorg.conf. This means tablet devices may no longer be called "stylus", "eraser" etc but some arbitrary name. This can be configured in the likes of gimp but for QT (from the 4.5 docs):

Notes for X11 Users

Qt uses the following hard-coded names to identify tablet devices from the xorg.conf file on X11 (apart from IRIX): 'stylus', 'pen', and 'eraser'. If the devices have other names, they will not be picked up Qt.
and so dies tablet support...

Anyone know any workarounds?