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[depe <denon_ubuntu@xxxxxxxx>]

Using 14.04 on a XPS 15z (cypress touchpad), I still have this issue.
It mostly appears after several 2 fingers scrolling.

 dmesg | grep mouse
 [ 3373.530080] psmouse serio1: Trackpad at isa0060/serio1/input0 - driver resynced.

 uname -r
 3.13.0-35-generic

Is the patch really included in this kernel?

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https://bugs.launchpad.net/bugs/1048258

Title:
  Cypress trackpad gets psmouse lost sync / driver resynced warnings

Status in Dell Sputnik:
  Fix Released
Status in “linux” package in Ubuntu:
  Triaged
Status in “linux” source package in Precise:
  Fix Released
Status in “linux” source package in Quantal:
  Fix Released

Bug description:
  I installed Kubuntu 12.04 with ppa suggested on this forum but I still
  have intermittent problem with touchpad.I also install kde-config-
  touchpad and have full control on touchpad(ex.: disable when mouse
  plugged).

  It work like I want but after come back from sleep mode, I got error message about synaptics and the syslog look like this:
  Sep  9 10:28:34 XPS-L321X kernel: [ 6839.441575] psmouse serio1: Trackpad at isa0060/serio1/input0 lost sync at byte 1
  Sep  9 10:28:34 XPS-L321X kernel: [ 6839.442852] psmouse serio1: Trackpad at isa0060/serio1/input0 - driver resynced.

  These lines are repeated in infinite loop.

  I tried these command:
  sudo modprobe -r psmouse
  sudo modprobe psmouse

  It reassign input:
  input: CyPS/2 Cypress as /devices/platform/i8042/serio1/input/input17
  It stop the loop for 2 minutes and start again

  Only way to fix is restart x session

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