it's such an old post. I'm also having the same problem with Wacom Bamboo CTH-301 on Ubuntu 18.04 LTS. Has anybody found the solution?

I've tried reading all the parameters to try to wonder if it's a miss-configuration ( xsetwacom --list devices ; xsetwacom --get 'Wacom USB Bamboo PAD Pen stylus' all ) but I can't find it.

Any idea? Thanks and best regards,