Comment 41 for bug 863154

Experiencing same horizontal and vertical line spikes utilizing two Genius Mousepad 8x6 tablets on both 386 and AMD-64 Ubuntu 11.10 machines utilizing latest NVIDIA 280 drivers and GIMP Editor. Confirm that disabling the Extended Input Devices stops the problem. However, without Extended Input Devices enabled the tablets will not have pressure sensitivity capabilities. This problem did not exist in UBUNTU 11.04.

Tested and Confirmed this problem pertaining GIMP with the following UBUNTU 11.10 shells:
GNOME, GNOME Classic, UNITY, UNITY 2D, Lubuntu, LXDE Session, Xubuntu, Xfce Session

Additionally Martin Owens PPA for Wizardpen Drivers does not include the latest version for Oneiric Ocelot 11.10
https://launchpad.net/~doctormo/+archive/xorg-wizardpen

deb http://ppa.launchpad.net/doctormo/xorg-wizardpen/ubuntu YOUR_UBUNTU_VERSION_HERE main
Only Natty version and earlier available.

Inkscape drawing works but pressure sensitivity does not. But I believe this was also the case in version 11.04.

SynfigStudio also works but you must manually install as the Ubuntu Software Center will not install even though it is listed. There appears to be no setup for tablets so again..., no pressure sensitivity capabilities.

Regarding Blender..., Drawing OK, all pen buttons work. Pressure sensitivity is supposed to be active in SCULPT MODE but I couldn't get it to work. But this could be due to my ignorance of the proper use of this function.

Considering that the BIG BUCK BUNNY project lists the use of SYNFIG STUDIO, BLENDER, GIMP and INKSCAPE as tools , this bug presents itself as a serious problem meriting top priority regarding a fix.