I was able to fix this on my ubuntu 14.04 installation using the vivid kernel (3.19). I ran:
sudo apt-get install linux-generic-lts-vivid did a reboot and the touchpad seems to be working now. Other people seem to be able to solve this problem by using a newer kernel too: https://github.com/duncan-bayne/mint-setup/issues/41 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/1431338 Title: Touchpad is not detected. Lenovo E550. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/1431338/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

