I installed another ubuntu based distrib, Ubuntu Studio 11.10 ( witch is XFCE based ) and ran the same issue.
But this time, after a lot of test, I get it fixed ; and it was after installing sources from Xorg edgers, and upgrade all xorg package via synaptic ( + restart ) , https://launchpad.net/~xorg- edgers/+archive/ppa . This new upgrades made my system use nouveau/mesa/gallium instead of Nvidia proprietary ( I see it running 'glxinfo' inside a terminal ) ...so, maybe nvidia proprietary driver being guilty. So, I presume I 'sort of' got it fixed ( at least I hope ) and did a 20min painting without any ghost lines problems. I still have to inspect if 3D performances are enough good to run Blender , games , etc... , I don't know a lot this new driver "nouveau/mesa/gallium" . My experience always lead me to had the reflex to install "additional proprietary driver" at first start after a fresh install... [ info : Test run for Gimp 2.6 - Gimp-painter, from Mizuno ppa + Xorg Edger upgrade + Ubuntu Studio 11.10 ( witch is XFCE based ) ] -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gimp in Ubuntu. https://bugs.launchpad.net/bugs/863154 Title: Wacom Bamboo One tablet random coordinate malfunctions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gimp/+bug/863154/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs