After some research, I found a workaround that worked for my PS/2 mouse. For the record, it's a Gateway branded "Trekker Wheel Mouse 2.0A" made by Flextronics. Passing "psmouse.proto=imps" to the kernel at boot forces the kernel to detect the mouse as a "ImPS/2 Generic Wheel Mouse" (as reported in /var/log/Xorg.0.log). I implemented this by editing this line in /etc/default/grub:
After some research, I found a workaround that worked for my PS/2 mouse. For the record, it's a Gateway branded "Trekker Wheel Mouse 2.0A" made by Flextronics. Passing "psmouse. proto=imps" to the kernel at boot forces the kernel to detect the mouse as a "ImPS/2 Generic Wheel Mouse" (as reported in /var/log/ Xorg.0. log). I implemented this by editing this line in /etc/default/grub:
GRUB_CMDLINE_ LINUX_DEFAULT= "psmouse. proto=imps quiet nosplash"
then running "sudo update-grub" at the command line. When I rebooted, my wheel worked as well as it does in 64-bit XP.