ubuntu-x-swat team mailing list archive

[Roger Peppe <899230@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Occasionally I'll see a continuous jitter from my touchpad - the mouse
pointer continuously jitters around by a small number of pixels (it does
stay in the same area of screen).

The only fix I have found is to suspend and resume - then the problem
goes away.

When this happened just now, I collected an evtest log from the touchpad, which I will
attach (I did not touch the touchpad or buttons while the log was being generated,
even though events are being generated continuously).

The device generating the events was this:

I: Bus=0011 Vendor=0002 Product=0007 Version=01b1
N: Name="SynPS/2 Synaptics TouchPad"
P: Phys=isa0060/serio1/input0
S: Sysfs=/devices/platform/i8042/serio1/input/input10
U: Uniq=
H: Handlers=mouse1 event10 
B: PROP=5
B: EV=b
B: KEY=6420 10000 0 0 0 0
B: ABS=11000003

I'm using a thinkpad X220 using stock Oneiric, 64 bit.

The output from "xinput --list-props $id" is this (unfortunately I collected this
*after* I had stopped the jitter by suspending and resuming the machine):

Device 'SynPS/2 Synaptics TouchPad':
	Device Enabled (132):	1
	Coordinate Transformation Matrix (134):	1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
	Device Accel Profile (250):	1
	Device Accel Constant Deceleration (251):	2.500000
	Device Accel Adaptive Deceleration (252):	1.000000
	Device Accel Velocity Scaling (253):	12.500000
	Synaptics Edges (267):	1752, 5192, 1620, 4236
	Synaptics Finger (268):	24, 29, 255
	Synaptics Tap Time (269):	180
	Synaptics Tap Move (270):	221
	Synaptics Tap Durations (271):	180, 180, 100
	Synaptics Tap FastTap (272):	0
	Synaptics Middle Button Timeout (273):	75
	Synaptics Two-Finger Pressure (274):	280
	Synaptics Two-Finger Width (275):	6
	Synaptics Scrolling Distance (276):	100, 100
	Synaptics Edge Scrolling (277):	0, 0, 0
	Synaptics Two-Finger Scrolling (278):	1, 1
	Synaptics Move Speed (279):	1.000000, 1.750000, 0.039809, 40.000000
	Synaptics Edge Motion Pressure (280):	29, 159
	Synaptics Edge Motion Speed (281):	1, 401
	Synaptics Edge Motion Always (282):	0
	Synaptics Off (283):	0
	Synaptics Locked Drags (284):	0
	Synaptics Locked Drags Timeout (285):	5000
	Synaptics Tap Action (286):	0, 0, 0, 0, 0, 0, 0
	Synaptics Click Action (287):	1, 3, 2
	Synaptics Circular Scrolling (288):	0
	Synaptics Circular Scrolling Distance (289):	0.100000
	Synaptics Circular Scrolling Trigger (290):	0
	Synaptics Circular Pad (291):	0
	Synaptics Palm Detection (292):	0
	Synaptics Palm Dimensions (293):	9, 199
	Synaptics Coasting Speed (294):	20.000000, 50.000000
	Synaptics Pressure Motion (295):	29, 159
	Synaptics Pressure Motion Factor (296):	1.000000, 1.000000
	Synaptics Resolution Detect (297):	1
	Synaptics Grab Event Device (298):	1
	Synaptics Gestures (299):	1
	Synaptics Capabilities (300):	1, 0, 0, 1, 1, 1, 1
	Synaptics Pad Resolution (301):	129, 75
	Synaptics Area (302):	0, 0, 0, 0
	Synaptics Noise Cancellation (303):	25, 25

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

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-input-synaptics in Ubuntu.
https://bugs.launchpad.net/bugs/899230

Title:
  occasional continuous jitter from touchpad

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/899230/+subscriptions