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[Launchpad Bug Tracker <860053@xxxxxxxxxxxxxxxxxx>]

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I recently installed Ubuntu 11.04 on a Lenovo T410s and noticed that the
mouse cursor/pointer would jump/reset periodically. If I had Twinview on
the pointer would reset somewhere on the other monitor. I turned that
off and the pointer still reset but within the only existing screen
available. I disabled all the mouse input devices and enabled them one
at a time starting with my USB mouse until I found the one that caused
the resets.

I was able to temporarily fix the problem by disabling the "N-Trig Pen eraser" input device.
'xinput list'
'xinput set-prop <id> "Device Enabled" 0'

# xinput list
⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
⎜   ↳ Logitech USB Laser Mouse                	id=9	[slave  pointer  (2)]
⎜   ↳ TPPS/2 IBM TrackPoint                   	id=21	[slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad              	id=19	[slave  pointer  (2)]
⎜   ↳ N-Trig Touchscreen                      	id=17	[slave  pointer  (2)]
⎜   ↳ N-Trig MultiTouch                       	id=16	[slave  pointer  (2)]
⎜   ↳ N-Trig Pen stylus                       	id=15	[slave  pointer  (2)]
⎜   ↳ N-Trig Pen pad                          	id=14	[slave  pointer  (2)]
⎜   ↳ N-Trig Pen eraser                       	id=13	[slave  pointer  (2)]

# xinput set-prop 13 "Device Enabled" 0

** Affects: xserver-xorg-input-synaptics (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: mouse pointer reset xinput
-- 
"N-Trig Pen eraser" causes mouse pointer to reset periodically
https://bugs.launchpad.net/bugs/860053
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