Comment 18 for bug 84762

I've got similar problems here and I've noticed some interesting quirks - the buttons and scroll wheel on the USB mouse seem to function, though the cursor isn't moving...

PS/2 Microsoft 2-button mouse and a Genius USB Powerscroll (not optical) mouse have both been connected since a fresh Ubuntu Feisty install earlier today. During install, I tried a few USB mice (all Genius Powerscoll) - one would move vertically, with slight horizontal movement only when wiggling the mouse around randomly. Another mouse gave horizontal movement only, with slight vertical movement when wiggling. I tried these mice with another PC running WinXP - they work fine there - but I've no other Linux systems here to test with.

Things are the same after install and reboot, though I noticed the mouse stopped moving altogether at one point. Strangely, I can use the scollwheel and click the two buttons on the USB mouse, though only the PS/2 mouse can move the pointer.

Is something up with the way the X and Y movements are being fed or read through the USB, perhaps?

'lsusb' reports:-
  Bus 002 Device 002: ID 0458:0018 KYE Systems Corp. (Mouse Systems)

Asrock K7VM2, Duron 1300, 512mb ram, 20gb Maxtor HD, nVidia GeForce FX5200 128mb (using free NV or binary NVIDIA from Add/Remove)

dmesg output on request.