Here are just the lines containing "syn" in my "Xorg.*.log" files; maybe
they might indicate something:
$ grep -i "syn" /var/log/Xorg.0.log
[ 124.326] Initializing built-in extension SYNC
[ 126.535] (II) config/udev: Adding input device SynPS/2 Synaptics
TouchPad (/dev/input/event8)
[ 126.535] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev
touchpad catchall"
[ 126.535] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad"
[ 126.535] (II) LoadModule: "synaptics"
[ 126.535] (II) Loading /usr/lib64/xorg/modules/input/synaptics_drv.so
[ 126.564] (II) Module synaptics: vendor="X.Org Foundation"
[ 126.564] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics
TouchPad'
[ 126.564] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 126.585] (II) synaptics: SynPS/2 Synaptics TouchPad: ignoring touch
events for semi-multitouch device
[ 126.585] (--) synaptics: SynPS/2 Synaptics TouchPad: x-axis range
1472 - 5776 (res 55)
[ 126.585] (--) synaptics: SynPS/2 Synaptics TouchPad: y-axis range
1408 - 5012 (res 103)
[ 126.585] (--) synaptics: SynPS/2 Synaptics TouchPad: pressure range
0 - 255
[ 126.585] (--) synaptics: SynPS/2 Synaptics TouchPad: finger width
range 0 - 15
[ 126.585] (--) synaptics: SynPS/2 Synaptics TouchPad: buttons: left
right double triple
[ 126.585] (--) synaptics: SynPS/2 Synaptics TouchPad: Vendor 0x2
Product 0x7
[ 126.586] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 126.586] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 126.601] (II) XINPUT: Adding extended input device "SynPS/2
Synaptics TouchPad" (type: TOUCHPAD, id 11)
[ 126.601] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel)
MinSpeed is now constant deceleration 2.5
[ 126.601] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel)
MaxSpeed is now 1.75
[ 126.601] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel)
AccelFactor is now 0.036
[ 126.602] (**) SynPS/2 Synaptics TouchPad: (accel) keeping
acceleration scheme 1
[ 126.602] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 1
[ 126.602] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration
factor: 2.000
[ 126.602] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration
threshold: 4
[ 126.602] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 126.603] (II) config/udev: Adding input device SynPS/2 Synaptics
TouchPad (/dev/input/mouse0)
[ 4348.562] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 6922.412] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 14621.758] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 22008.349] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 27740.053] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 32069.333] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 37658.675] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 40916.165] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 46757.105] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 52299.497] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 54579.861] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 61322.873] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 67158.004] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 73002.953] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 78465.992] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 82351.794] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 87090.688] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 92443.973] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 97025.344] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[103716.619] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
-----------------------------------------------------------------------
$ grep -i "syn" /var/log/Xorg.1.log
[ 28727.184] Initializing built-in extension SYNC
[ 28727.958] (II) config/udev: Adding input device SynPS/2 Synaptics
TouchPad (/dev/input/event6)
[ 28727.958] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev
touchpad catchall"
[ 28727.958] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad"
[ 28727.958] (II) LoadModule: "synaptics"
[ 28727.959] (II) Loading /usr/lib64/xorg/modules/input/synaptics_drv.so
[ 28727.959] (II) Module synaptics: vendor="X.Org Foundation"
[ 28727.959] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics
TouchPad'
[ 28727.959] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 28727.980] (II) synaptics: SynPS/2 Synaptics TouchPad: ignoring touch
events for semi-multitouch device
[ 28727.980] (--) synaptics: SynPS/2 Synaptics TouchPad: x-axis range
1472 - 5776 (res 55)
[ 28727.980] (--) synaptics: SynPS/2 Synaptics TouchPad: y-axis range
1408 - 5012 (res 103)
[ 28727.980] (--) synaptics: SynPS/2 Synaptics TouchPad: pressure range
0 - 255
[ 28727.980] (--) synaptics: SynPS/2 Synaptics TouchPad: finger width
range 0 - 15
[ 28727.980] (--) synaptics: SynPS/2 Synaptics TouchPad: buttons: left
right double triple
[ 28727.980] (--) synaptics: SynPS/2 Synaptics TouchPad: Vendor 0x2
Product 0x7
[ 28727.981] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 28727.981] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 28727.993] (II) XINPUT: Adding extended input device "SynPS/2
Synaptics TouchPad" (type: TOUCHPAD, id 11)
[ 28727.993] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel)
MinSpeed is now constant deceleration 2.5
[ 28727.993] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel)
MaxSpeed is now 1.75
[ 28727.993] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel)
AccelFactor is now 0.036
[ 28727.994] (**) SynPS/2 Synaptics TouchPad: (accel) keeping
acceleration scheme 1
[ 28727.994] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 1
[ 28727.994] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration
factor: 2.000
[ 28727.994] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration
threshold: 4
[ 28727.995] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 28727.996] (II) config/udev: Adding input device SynPS/2 Synaptics
TouchPad (/dev/input/mouse0)
[ 29033.619] (II) UnloadModule: "synaptics"
Frank