Thanks for the last two comments - I got in touch with Jeroen who posted the spinics forum post, and he said that the best way to confirm the problem was to either boot into Windows 8 safe mode or boot Windows 7 from USB and see what happened there.
Under Windows 8 safe mode there was no perceptible problem but as soon as I booted Windows 7 it was clear that there was an issue, and the cursor set off uncontrollably after a few seconds use. I called Lenovo and yesterday they fitted a new keyboard bezel (which contains a new trackpad) and over a few hours use yesterday I have had no further "lost sync" messages. This was definitely a hardware issue and I'd like to thank everyone for their help in sorting it out. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268365 Title: [Lenovo Thinkpad t440s] Touchpad periodically stops working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268365/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
