Comment 0 for bug 978807

My Dell XPS 13 Ultrabook can't detect Cypress Trackpad correctly.
It detected as 'ImPS/2 Generic Wheel Mouse'.
'Cypress Trackpad' works just basic function not fully.
The trackpad(touchpad)'s L-button and R-button works and scrolling and dragging work not perfectly.
Tapping work not perfectly, either.
For tapping, I should tap and hold the tapping for about 1sec. and then, it recognize tapping.

xinput --list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ ImPS/2 Generic Wheel Mouse id=13 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
    ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
    ↳ Power Button id=6 [slave keyboard (3)]
    ↳ Video Bus id=7 [slave keyboard (3)]
    ↳ Power Button id=8 [slave keyboard (3)]
    ↳ Sleep Button id=9 [slave keyboard (3)]
    ↳ Laptop_Integrated_Webcam_1.3M id=10 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=11 [slave keyboard (3)]
    ↳ Dell WMI hotkeys

This is on Ubuntu 11.10 amd64.