I have this problem since 3.2.0-46 -generic, the last upgrade doesnt fix it so in 3.2.0-51-generic you get the same error on logs:
psmouse serio4: TouchPad at isa0060/serio4/input0 lost sync at byte 4 My machine is a Lenovo l520 with 64 bit Ubuntu -- 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/896922 Title: Lenovo L520 - "psmouse.c: touchpad at isa0060/serio4/input0 lost sync" and stops working for seconds To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/896922/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
