I experienced the problem when I had two monitors active: With the Windows key held down, each click of the mouse wheel rotated "upwards" (to zoom in) causes a seemingly random jump of the cursor about two inches to the left, right or down.
After disabling the external monitor the problem does not occur.
After re-enabling the external monitor the problem re-occurs.
Switching Appearance Preferences | Visual Effects from Extra to Normal does *not* fix the problem.
The workaround described above *does* fix the problem. Specifically, in 10.04 LTS (Lucid Lynx), I do:
$ sudo aptitude install compizconfig-settings-manager
$ ccsm
In the CompizConfig Settings Manager window, click the Enhanced Zoom Desktop icon.
Click on the Mouse Behaviour tab.
De-select Sync Mouse.
I experienced the problem when I had two monitors active: With the Windows key held down, each click of the mouse wheel rotated "upwards" (to zoom in) causes a seemingly random jump of the cursor about two inches to the left, right or down.
After disabling the external monitor the problem does not occur.
After re-enabling the external monitor the problem re-occurs.
Switching Appearance Preferences | Visual Effects from Extra to Normal does *not* fix the problem.
The workaround described above *does* fix the problem. Specifically, in 10.04 LTS (Lucid Lynx), I do: settings- manager
$ sudo aptitude install compizconfig-
$ ccsm
In the CompizConfig Settings Manager window, click the Enhanced Zoom Desktop icon.
Click on the Mouse Behaviour tab.
De-select Sync Mouse.