Comment 33 for bug 632884

Andy Whitcroft (apw) wrote :

From what I can see the machine is being recognised as expected and the quirk is kicking in, switching the touchpad from over to '4-byte "Intellimouse Mode"'. This is evidenced by the following in dmesg:

  [ 3.667423] alps.c: Enabled hardware quirk, falling back to psmouse-core

This is emmited by a later version of the patch attached above to this bug, the one recommended by ALPS for this hardware. This is expected to fix the scrolling issues, but in this mode it will not be seen as a touchpad (it is behaving as a clever mouse) and so userspace will not offer touchpad options for it.