grep synaptic /var/log/messages

Jan 10 22:00:59 CF-S9 /netbsd: pms0: synaptics_enable: Error enabling device.
Jan 22 20:55:23 CF-S9 /netbsd: pms0: synaptics_enable: Error enabling device.
Jan 27 07:55:53 CF-S9 /netbsd: pms0: synaptics_enable: Error enabling device.

synaptics.c#384

   383  void
   384  pms_synaptics_enable(void *vsc)
   385  {
   ....
   405          res = pms_sliced_command(psc->sc_kbctag, psc->sc_kbcslot,
   406              SYNAPTICS_MODE_ABSOLUTE | SYNAPTICS_MODE_W | SYNAPTICS_MODE_RATE);
   407          cmd[0] = PMS_SET_SAMPLE;
   408          cmd[1] = SYNAPTICS_CMD_SET_MODE2;
   409          res |= pckbport_enqueue_cmd(psc->sc_kbctag, psc->sc_kbcslot, cmd, 2, 0,
   410              1, NULL);
   411          sc->up_down = 0;
   412          sc->prev_fingers = 0;
   413          sc->gesture_start_x = sc->gesture_start_y = 0;
   414          sc->gesture_start_packet = 0;
   415          sc->gesture_tap_packet = 0;
   416          sc->gesture_type = 0;
   417          sc->gesture_buttons = 0;
   418          sc->rem_x = sc->rem_y = 0;
   419          sc->movement_history = 0;
   420          if (res) {
   421                  aprint_error_dev(psc->sc_dev,
   422                      "synaptics_enable: Error enabling device.\n");
   423          }
   424  }