This sync issue with the E7440 touchpad can cause spurious clicks too. One thing that I found helps is to add psmouse.resetafter=1 to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub (and then run update- grub and reboot).
This will cause the driver to reset when it loses sync, causing the touchpad to stop working for a few moments, but typically avoiding spurious movement and clicking. This will also cause your dmesg logs to look like this instead: [ 2571.411451] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost sync at byte 1 [ 2571.411456] psmouse serio1: issuing reconnect request [ 6112.042246] psmouse serio1: DualPoint TouchPad at isa0060/serio1/input0 lost sync at byte 1 [ 6112.042260] psmouse serio1: issuing reconnect request . . . -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1258837 Title: Dell Latitude E7440 ALPS touchpad keeps having state reset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1258837/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
