I am using Ubuntu 10.10. I have my touchpad working till the gnome login screen. But once I login it doesn't work.
tail /var/log/Xorg.0.log
gives me this error.
[ 42.610] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration threshold: 4
[ 42.690] (--) SynPS/2 Synaptics TouchPad: touchpad found
[ 42.690] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse1)
[ 42.690] (II) No input driver/identifier specified (ignoring)
I guess I have to add the touchpad driver (synaptics) in Xorg configuration file. But any idea in which section and which syntax?
[EDIT]: Well, i have an aspire 4520. amd64x2 processor, synaptics touchpad [EDIT]: Adding the config file in the given answer doesn't work.The problem stays in xmonad too.