I am not sure, but in your opinion does this give indication? :
$ dmesg | grep -i -C 1 synaptic
[ 1.044513] Write protecting the kernel read-only data: 1136k
[ 1.242261] Synaptics Touchpad, model: 1, fw: 6.3, id: 0x1a0b1,
caps: 0xa04713/0x200000
[ 1.283487] input: SynPS/2 Synaptics TouchPad as
/devices/platform/i8042/serio4/input/input5
[ 1.305615] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
Watch that "SynPS/2".... IMHO that means PS/2?
I don't know why I didn't check dmesg! But you are right, it is a PS/2 mouse, except it probably uses an extended protocol (just like IM PS/2, IM/EX PS/2, ..etc). It's funny how that exact command worked for me (I guess Synaptics touchpads are everywhere).
Thanks Mulyadi!
-Yousef
