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[Fabio Marconi <fabiomarconi@xxxxxxxxxx>]

** Bug watch added: GNOME Bug Tracker #663000
   https://bugzilla.gnome.org/show_bug.cgi?id=663000

** Also affects: gimp via
   https://bugzilla.gnome.org/show_bug.cgi?id=663000
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/882937

Title:
  Glitches when using Bamboo Pen & Touch with Gimp

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

Bug description:
  I am having some odd glitches when using the Bamboo Pen & Touch with
  Gimp.

  In "Preferences > Input Devices > Configure Extended Input
  Devices...", if I set the mode of the "Wacom BambooPT 2FG 4x5 Pen
  stylus" to "Disabled", which is the default, there are no glitches at
  all, but pressure input is not recognised (see a.png). This is
  understandable and not an issue.

  If I change the mode to "Screen", pressure input is recognised, but
  weird glitches when drawing lines occur, whereby the x co-ordinate, y
  co-ordinate, or both, intermittently 'jumps' to zero and back (see
  b.png).

  The glitches appear to depend on movement speed; when drawing slowly,
  the glitches are very dense and frequent, but as I draw faster, the
  glitches are more sparse (see c.png).

  Note that MyPaint, another drawing program, works perfectly (see
  d.png).

  This is on a fresh install of Ubuntu 11.10 with no changes.

  $ lsusb | grep -i wacom
  Bus 005 Device 003: ID 056a:00d6 Wacom Co., Ltd

  $ uname -a
  Linux meina-laptop 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

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