Ubuntu
xserver-xorg-input-synaptics package

  1. Bug #549727
  2. Comment #62

Comment 62 for bug 549727

Revision history for this message
Morten (morten-hh) wrote : Re: [10.04] Touchpad stops working after login

i think the problem with the touchpad on/off button is a different bug.
those of you who have problems with the on/off button check this link out

https://help.ubuntu.com/community/AspireTimeline/Fixes

scroll down to: "Touchpad On/Off button"
this fix works