I compiled 4.13rc1 including the patch adding the ELAN0651 to the acpi device id array. It did not help. I think the device is connected over USB:
$ lsusb -vv ... Bus 001 Device 003: ID 06cb:0081 Synaptics, Inc. ... There was some discussion here: https://www.reddit.com/r/Lenovo/comments/6alxy3/trackpad_not_working_on_linux_lenovo_yoga_720/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1700657 Title: Touchpad not detected in Lenovo X1 Yoga / Yoga 720-15IKB To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1700657/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
