I encountered a problem similar to what was mentioned in the original
message. I'm a university professor, and I supervise a computer
classroom of 20 machines, with Fedora Core as GNU/Linux distribution,
and Wacom Intuos 3 A6 tablets. We use a 2.6.12 kernel, x.org, and the
last linuxwacom RPM.
Since the tablets are installed only during the working session, to
prevent disparitions, we had to design a protocol: first plug in the
tablet, then restart the X server, then login. At the end of the
session, students must logout, then restart the X server, and
_immediately_ plug out the tablet. If this protocol is not exactly
followed, the X server freezes, and rebooting is necessary.
Students are often clumsy when using the tablet, and their working board
is cluttered. Problems frequently occur when they use the USB mouse
while the Wacom mouse is on the tablet, but also when they clumsily
handle the stylus. The effect is what has been already described:
whatever tool is used (USB mouse, Wacom mouse, stylus, or eraser), all
"works" as if the initial tool was still touching the tablet. It is
impossible to activate another Gimp tool, or even to close a window,
although reducing it is possible.
Two different solutions seem to work in such a case:
- as suggested by somebody else, flip the pen over and activate the
eraser, or activate the stylus or the pen on another part of the
screen, several times;
- simply wait for some time, and the situation terminates by itself;
- in some cases, the only solution seems to kill the X server and
Since it occurs while students are working, it is not easy to stop their
work in order to make further analysis. However, I can try to make the
phenomenon occur in precise situations, and give all the informations I
can manage to get.