ubuntu-x-swat team mailing list archive

[Bryce Harrington <591954@xxxxxxxxxxxxxxxxxx>]

Yep, what's going on here is that the touchpad communicates its
dimensions to the xserver, and then xserver compares that to the screen
size and scales mouse movement to correspond to the screen.  Most of the
time that matches expectations, but when the aspect ratio of the screen
differs significantly from the aspect ratio of the touchpad, it can
produce weird results.

In I've coded a patch to add a way to turn off this behavior, via either
an xinput property "Resolution Detect", or an xorg.conf option.

  * Add 116_resolution_detect_option.patch: Provide an option to prevent
    synaptics from communicating the touchpad size to the xserver.  This
    can be used to solve problems where differences in touchpad and screen
    dimensions cause the mouse pointer to skip pixels when moving.
    (LP: #327428)


** Changed in: xserver-xorg-input-synaptics (Ubuntu)
       Status: Incomplete => Fix Released

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https://bugs.launchpad.net/bugs/591954

Title:
  Touchpad aspect ratio changes with TwinView