I believe I found the cause of this regression. The wacom tablet
sometimes sends button presses on one of the X devices that does not
emit (or has not emitted yet) traditional X and Y coordinates. This
confuses the server due to masked valuators and coordinate
transformation. The fix is to not generate and propagate any coordinate
changes if the incoming event does not have any coordinate changes.
Please test out the xserver-xorg-core package in ppa:utouch-
team/unstable after it has built. The package version should be
1.10.2-1ubuntu1.2~utouch1.
Thanks!
** Changed in: xorg-server (Ubuntu)
Assignee: (unassigned) => Chase Douglas (chasedouglas)
** Changed in: xorg-server (Ubuntu)
Importance: Undecided => Medium
** Changed in: xorg-server (Ubuntu)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/799202
Title:
wacom stylus jumps with latest xserver-xorg-core
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