$ ls -l /usr/lib64/xorg/modules/input/synaptics_drv.so
-rwxr-xr-x. 1 root root 316254 25 mars  15:14 /usr/lib64/xorg/modules/input/synaptics_drv.so

$ dmesg | grep -i synap
[    2.016314] psmouse serio4: synaptics: Touchpad model: 1, fw: 7.4, id: 0x1e0b1, caps: 0xd04773/0xe40000/0x5a0400
[    2.060552] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio4/input/input4

$ grep -i synap /var/log/Xorg.0.log
[    24.541] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event4)
[    24.541] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev touchpad catchall"
[    24.541] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad catchall"
[    24.541] (II) LoadModule: "synaptics"
[    24.542] (II) Loading /usr/lib64/xorg/modules/input/synaptics_drv.so
[    24.542] (II) Module synaptics: vendor="X.Org Foundation"
[    24.542] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics TouchPad'
[    24.542] (II) Loading /usr/lib64/xorg/modules/input/synaptics_drv.so
[    24.542] (**) SynPS/2 Synaptics TouchPad: always reports core events
[    24.549] (--) synaptics: SynPS/2 Synaptics TouchPad: x-axis range 1472 - 5686
[    24.549] (--) synaptics: SynPS/2 Synaptics TouchPad: y-axis range 1408 - 4548
[    24.549] (--) synaptics: SynPS/2 Synaptics TouchPad: pressure range 0 - 255
[    24.549] (--) synaptics: SynPS/2 Synaptics TouchPad: finger width range 0 - 15
[    24.549] (--) synaptics: SynPS/2 Synaptics TouchPad: buttons: left double triple
[    24.549] (--) synaptics: SynPS/2 Synaptics TouchPad: Vendor 0x2 Product 0x7
[    24.549] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[    24.549] (**) SynPS/2 Synaptics TouchPad: always reports core events
[    24.549] (II) XINPUT: Adding extended input device "SynPS/2 Synaptics TouchPad" (type: TOUCHPAD, id 12)
[    24.550] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MinSpeed is now constant deceleration 2.5
[    24.550] (**) synaptics: SynPS/2 Synaptics TouchPad: MaxSpeed is now 1.75
[    24.550] (**) synaptics: SynPS/2 Synaptics TouchPad: AccelFactor is now 0.038
[    24.550] (**) SynPS/2 Synaptics TouchPad: (accel) keeping acceleration scheme 1
[    24.550] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 1
[    24.550] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration factor: 2.000
[    24.550] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration threshold: 4
[    24.550] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[    24.551] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse0)
[    60.705] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found