I am having the same issue with my Asus K52JT laptop. This laptop has 'Elantech' touchpad so I fixed the `asus-touchpad.sh` accordingly (see the attachment). Now the problem is that, touchpad is only enable/disable in GDM screen. Once I logged in, acpid is throwing the same error.
No protocol specified Unable to connect to X server ** Attachment added: "asus-touchpad.sh" https://bugs.launchpad.net/ubuntu/+source/acpid/+bug/713278/+attachment/1857335/+files/asus-touchpad.sh -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/713278 Title: Touchpad Hotkey not working on Asus V6 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs