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On my Nec Generation Laptop the touch pad device doesn't work. The buttons work but moving the mouse does not. I tested in Windows to prove it physically works. It seems it detects it as FSPPS/2 Sentelic FingerSensingPad whose driver should be part of the kernel. I have pasted a snippet from /var/log/Xorg.0.log. I am not sure if "input driver/identifier specified" referrs to the touchpad.
[ 30.903] (II) config/udev: Adding input device FSPPS/2 Sentelic FingerSensingPad (/dev/input/event11)
[ 30.903] (**) FSPPS/2 Sentelic FingerSensingPad: Applying InputClass "evdev pointer catchall"
[ 30.903] (II) Using input driver 'evdev' for 'FSPPS/2 Sentelic FingerSensingPad'
[ 30.903] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 30.903] (**) FSPPS/2 Sentelic FingerSensingPad: always reports core events
[ 30.903] (**) FSPPS/2 Sentelic FingerSensingPad: Device: "/dev/input/event11"
[ 30.903] (--) FSPPS/2 Sentelic FingerSensingPad: Found 11 mouse buttons
[ 30.903] (--) FSPPS/2 Sentelic FingerSensingPad: Found scroll wheel(s)
[ 30.903] (--) FSPPS/2 Sentelic FingerSensingPad: Found relative axes
[ 30.903] (--) FSPPS/2 Sentelic FingerSensingPad: Found x and y relative axes
[ 30.903] (II) FSPPS/2 Sentelic FingerSensingPad: Configuring as mouse
[ 30.903] (II) FSPPS/2 Sentelic FingerSensingPad: Adding scrollwheel support
[ 30.903] (**) FSPPS/2 Sentelic FingerSensingPad: YAxisMapping: buttons 4 and 5
[ 30.903] (**) FSPPS/2 Sentelic FingerSensingPad: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[ 30.903] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input11/event11"
[ 30.903] (II) XINPUT: Adding extended input device "FSPPS/2 Sentelic FingerSensingPad" (type: MOUSE, id 11)
[ 30.903] (II) FSPPS/2 Sentelic FingerSensingPad: initialized for relative axes.
[ 30.904] (**) FSPPS/2 Sentelic FingerSensingPad: (accel) keeping acceleration scheme 1
[ 30.904] (**) FSPPS/2 Sentelic FingerSensingPad: (accel) acceleration profile 0
[ 30.904] (**) FSPPS/2 Sentelic FingerSensingPad: (accel) acceleration factor: 2.000
[ 30.904] (**) FSPPS/2 Sentelic FingerSensingPad: (accel) acceleration threshold: 4
[ 30.904] (II) config/udev: Adding input device FSPPS/2 Sentelic FingerSensingPad (/dev/input/mouse1)
[ 30.904] (II) No input driver/identifier specified (ignoring)
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