Ubuntu
acpi-support package

  1. Bug #804109
  2. Comment #46

Comment 46 for bug 804109

Revision history for this message
Mohamed Ashraf (mohamed-ashraf-213) wrote : Re: can't enable touchpad in Ubuntu 11.10

I got it to work on thinkpad T420 by using
sudo xinput set-int-prop 11 "Synaptics Off" 8 0
the bug happens because there are two properties governing the touchpad "on" status "device Enabled" and "Synaptics Off" and they must be set to 1 and 0 respectively if the touchpad is to work the problem arised because they switched asynchronously when you enable or disable the device. I couldn't change the device enabled property so i changed the "Synaptics Off" to 0 to get them back into sync. you can now disable and enable the device however i didnt yet restart to see what happens next time i boot up