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[Bug 863154] Re: Wacom Bamboo One tablet random coordinate malfunctions

 

Thank you Alexia.

As I understand it this is a workaround for the bug which would enable
Gimp to work in Oneiric and has a very low chance of causing regressions
in Gimp.  All Ubuntu would need to do is add this patch to their Gimp
package to disable the history buffer and release it as an update.

I quickly slapped your link into a patch form so that Launchpad janitor
would be aware a patch has been submitted.  It is untested and Ubuntu
packagers should follow your link to actually obtain the patch.

** Patch added: "app- Disable-history-buffer-via-use-of-gimprc-option.patch"
   https://bugs.launchpad.net/ubuntu/+source/gimp/+bug/863154/+attachment/2619574/+files/app-%20Disable-history-buffer-via-use-of-gimprc-option.patch

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https://bugs.launchpad.net/bugs/863154

Title:
  Wacom Bamboo One tablet random coordinate malfunctions

Status in The GNU Image Manipulation Program (GIMP):
  Unknown
Status in “gimp” package in Ubuntu:
  Confirmed

Bug description:
  The tablet in overall seems to work correctly, with all pressure-
  features working. But quite frequently, while drawing, GIMP seems to
  wrongly read the coordinates of the stylus (as zeros, or negative
  values?), resulting in frequent, random 'line-peaks' in the direction
  of the left and upper image edges. With this bug it is hard to even
  use the tablet, since these problems are very frequent (see the
  exemplary image attached).

  The tablet works with no problems in MyPaint. The bug is reproducible
  in both Unity-2d and Unity-3d.

  I also notice the CPU usage increasing dramatically during drawing
  with any brush.

  Steps to reproduce:
  1. Connect the Wacom Bamboo One tablet
  2. Open GIMP
  3. Start drawing longer strokes with any brush

  Expected result:
  The brush stroke as intended by moving the stylus

  Actual result:
  The brush stroke as intended with frequent, random line-strokes towards image edges

  System: Ubuntu 11.10 oneiric (development branch)
  GIMP version: 2.6.11 (package version: 2.6.11-2ubuntu3)

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References