Ok. I have an HP nx9420 laptop with a core2 dual cpu, 4G ram, and Nvidia NVS 510M graphics. It also comes with a Synaptics touch-pad. I am running Mint 13 KDE 32-bit. The touch-pad will function as a normal mouse. But gestures do not work at all.
When I go into System Settings there is an icon for Input Devices. Inside of Input Devices there is a selection for Touchpad. When I select this setting, System Settings faults and terminates with an error.
So then I run these commands from a terminal:
sudo rmmod psmouse
sudo modprobe psmouse proto=imps
After entering this, the Touchpad works fine. Scroll, gestures and everything works. Curiously, when I return to System Settings, I can now open the Input Devices - Touchpad selection. It no longer terminates with a fault. Now it says I have no Touchpad. Hmmmmmm. But it's all working pretty good now.
But when I reboot, the Touchpad returns to functioning without gestures till I do the above procedures in a terminal once again. It works fine once more, but the setting do not save after reboot.
HP XW8600 Work Station
Dual Quad-Core 3Ghz Xeon CPU's
32GB PC2-5300 ECC DRAM
Nvidia GT520 2G GDDR3 Graphics
2TB Seagate Barracuda 7200 RPM
Linux Mint 16 KDE 64-bit
Windows 7 Professional 64-bit