I've just updated to 12.04 and tested it. The original syntax no longer works, but this does work:
xsetwacom --set "Wacom Graphire2 4x5 stylus" Button 3 "button 1 button 1" (from: https://gist.github.com/i-e-b/2894651) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xf86-input-wacom in Ubuntu. https://bugs.launchpad.net/bugs/581663 Title: Wacom stylus buttons no longer emit double click events in Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xf86-input-wacom/+bug/581663/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

