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[Bug 799202] Re: wacom stylus jumps with latest xserver-xorg-core

 

Good news! I was able to make my 2 wacom devices (touchscreen and
Intuos2) work correctly in Krita using the attached patch against Qt.
Chase Douglas was right about Qt incorrectly using the recieved events
because not all axis are sent. I simply updated Jussi's patches like
that:

Instead of just checking the upper limit of the axis index:

if (xIndex < maxIndex)

I check both upper and lower limits:

if (xIndex >= firstAxis && xIndex < maxIndex)

If the index of the axis is inside the range, we use the value,
otherwise we put the last recieved value.


** Patch added: "valuator_range2.diff"
   https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/799202/+attachment/2442754/+files/valuator_range2.diff

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https://bugs.launchpad.net/bugs/799202

Title:
  wacom stylus jumps with latest xserver-xorg-core

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