There is no this problem under Trusty (14.04), since the udev has removed the below keymap:
ENV{DMI_VENDOR}=="LENOVO", ATTR{[dmi/id]product_version}=="*Lenovo V480*", RUN+="keymap $name 0xf1 f21" -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to pm-utils in Ubuntu. https://bugs.launchpad.net/bugs/1089105 Title: [Lenovo V480c Notebook]: Trackpad doesn't work after closing and opening the lid To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1089105/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs