Public bug reported:
Binary package hint: xserver-xorg-input-synaptics
I've a Lenovo T61 with a Synaptics touchpad with the following options
in my xorg.conf:
Option "HorizEdgeScroll" "0"
Option "VertTwoFingerScroll" "true"
If I try to use two-finger scrolling, very often I get spurious scroll
down events immediately after I lift my fingers off the touchpad. This
makes two-finger scrolling feature absolutely unusable :(
This is on Hardy with xserver-xorg-input-synaptics
0.14.7~git20070706-1ubuntu4
Steps to reproduce:
1. Enable VertTwoFingerScroll
2. Start xev
3. Move the mouse into the xev window
4. Place two fingers on the touchpad, move them forward a bit and immediately
lift them, without pausing.
Expected results:
* you see a few button 4 press & release events in the xev log
Actual results:
* you see a few button 4 press & release events, and following those
about 120 button 5 press & release events.
(This might be related to bug 228311, although it refers to right-edge
scrolling, which never caused big problems for me. I'd get a couple of
scroll events in the wrong direction after lifting my finger, but I
always thought it was my finger shifting position while I was lifting it
up.)
** Affects: xserver-xorg-input-synaptics (Ubuntu)
Importance: Undecided
Status: New
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two-finger scrolling produces spurious button 5 events
https://bugs.launchpad.net/bugs/260780
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