Ubuntu 9.04 setup – fixing the scroll wheel

In Ubuntu with a PS/2 mouse, the scroll wheel stops working when you switch away with a KVM switch. I found some good instructions for fixing the problem on 8.04 here.

There are a few minor changes for 9.04. Here are the steps:

  1. Add the following to /etc/modules
  2. Create /etc/modprobe.d/psmouse.conf and give it the following contents:
     # Make my mouse work with KVM
     options psmouse proto=imps
  3. Finally, reload the mouse module:
     # sudo modprobe -r psmouse
     # sudo modprobe -a psmouse

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