** Changed in: xorg-driver-synaptics
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/726832
Title:
Touchpad speed scales with multimonitor size per axis
Status in XOrg-Driver-Synaptics - synaptics driver for XOrg:
Fix Released
Status in “xserver-xorg-input-synaptics” package in Ubuntu:
Triaged
Bug description:
When enabling a second screen, say horizontally next to the primary
screen, horizontal touchpad speed increases proportionally to the
increase in horizontal resolution. I assume the same happens when
enabling multiple screens in a vertical configuration. So, it seems
that touchpad speed is relative to the total screen layout size in
each axis. This is quite irritating. It would be more reasonable to
define speed in absolute terms (pixels/sec) rather than relative terms
(% x/y resolution / sec), thereby keeping speed in both axes constant,
regardless of the addition/removal of extra screens.
I've noticed this on my Thinkpad W510 running Maverick amd64, the
latest nvidia binary blob, utouch 1.1, synaptics-dkms 1.0.0, and
xserver-xorg-input-synaptics 1.2.2-2ubuntu5
Note that external mice don't exhibit this problem. This might be why
this situation isn't encountered often: when plugged into an external
monitor, the user is more likely to also plug in an external mouse
rather than rely on the touchpad.
This was brought up by Ricardo Caldeira at https://bugs.launchpad.net
/xorg-driver-synaptics/+bug/308191/comments/187, and Duncan McGreggor
replied at https://bugs.launchpad.net/xorg-driver-
synaptics/+bug/308191/comments/189.
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