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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

** Affects: gimp (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Glitches when using Bamboo Pen & Touch with Gimp
https://bugs.launchpad.net/bugs/882937
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