Nvidia-drivers tested: most of 260.x till 280.11
linuxwacom version: git, 2011-08-16,
[ 7831.782] (II) LoadModule: "wacom"
[ 7831.782] (II) Loading /usr/lib64/xorg/modules/input/wacom_drv.so
[ 7831.783] (II) Module wacom: vendor="X.Org Foundation"
[ 7831.783] compiled for 1.10.3, module version = 0.11.99
[ 7831.783] Module class: X.Org XInput Driver
[ 7831.783] ABI class: X.Org XInput driver, version 12.2
[ 7831.783] (II) Using input driver 'wacom' for 'Wacom BambooFun 6x8'
When I don't set MapToOutput HEAD-X or the transformation matrix, the tablet works fine. Once it is set however, as soon as the stylus comes close to the tablet (motion detected by xinput test), the cursor jumps between where the normal mouse pointer was before or at least close to that position (but at the same height as the stylus pointer) and the stylus pointer. The jumping occurs very fast, however you can still see the cursor (or in my case the painting dot from jarnal or gimp) blink. This produces horizontal lines every time i come near the tablet. When I move the stylus pointer, the other blinking one moves with it at a constant horizontal distance. Also if I get close enough to the left edge of my right monitor, the second pointer appears on the left monitor, producing clicks every time it blinks. Of course this also occurs on the right monitor if I leave the drawing area or it isn't big enough to enclose both pointers. Furthermore I xinput test'ed my mouse and there is no movement or action at all when I move the stylus over the pad.
I hope somebody can help me.