Configuring a Touchpad
Many laptops use a Synaptics TouchPad (or an Alps GlidePoint, which can use the same driver). By default, a touchpad will emulate a PS/2 mouse, so it should work fine with the default driver, but if you use the Synaptics-specific driver, you can exquisitely fine-tune the touchpad’s extended features.
How Do I Do That?
You will need to manually edit the X server configuration file, /etc/X11/xorg.conf, to make two changes.
It’s a good idea to get into the habit of making a backup of configuration files before modifying them, just in case something goes wrong:
cp /etc/X11/Xorg.conf /etc/X11/Xorg.conf.backup
First, add an
InputDevice line to the
Section "ServerLayout" Identifier "Default Layout" Screen 0 "Screen0" 0 0 InputDevice "Mouse0" "CorePointer" InputDevice "TouchPad0" "AlwaysCore" InputDevice "Keyboard0" "CoreKeyboard" EndSection
Next, add a new
InputDevice section (you can add this to any part of the file that is not between
Section "InputDevice" Identifier "Touchpad0" Driver "synaptics" Option "SHMConfig" "on" EndSection
When you restart the X server by restarting the system or pressing Ctrl-Alt-Backspace (save any work first!), the Synaptics driver will be loaded with a default configuration that will permit you to:
Click the left mouse button by tapping one finger in the middle area or by tapping the upper-left corner.
Drag with the left mouse button by tapping and then dragging one finger (touch-release-touch, ...