I have a lenovo ideapad 320. After installing ubuntu 16.04, the touchpad hasn't been working.
sometimes the touchpad will work for a few minutes after restarting, but it eventually stops working again. the touchpad is enabled in settings, and a usb mouse works just fine.
Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Elan Touchpad id=13 [slave pointer (2)]
what should I do to fix this?