I am also getting this same problem with my Apple Magic Trackpad on my Lenovo T540 running Ubuntu 14.04. I am using only the bluetooth built-in to the laptop, no external dongle.
My trackpad worked fine on older T510 running Ubuntu 12.04.
I am also getting this same problem with my Apple Magic Trackpad on my Lenovo T540 running Ubuntu 14.04. I am using only the bluetooth built-in to the laptop, no external dongle.
My trackpad worked fine on older T510 running Ubuntu 12.04.