Touchpad problems?

To change the behavior of the Synaptics/Alps touch pad, use Control Panel - Desktop - Adjust Touch Pad. If Adjust Touch Pad errors when you launch it, your touch pad is probably not supported yet, see libinput below.

Control Panel - Desktop - Adjust Touch Pad doesn't offer the option you want to adjust, you can do it manually by editing /usr/X11R7/lib64/X11/xorg.conf.d/50-synaptics.conf. By default that file contains this:
Section "InputClass"
        Identifier "touchpad catchall"
        Driver "synaptics"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"
            Option "TapButton1" "1"
            Option "TapButton2" "2"
            Option "TapButton3" "3"
            Option  "MaxTapTime" "0"

After editing this file you must restart the X server for changes to take effect.

Here’s a couple popular options to adjust :

By default "tap-to-click" is disabled as some touchpads are overly sensitive, making the system impossible to use if it is left on. To turn it back on:

  1. Open Adjust Touchpad control from within Control Panel (under Desktop tab)
  2. Go to the "tapping" tab
  3. Use the "One Finger" pull down menu to select "left button".
  4. Then click save and quit.

To enable vertical scrolling, open Adjust Touchpad as above, then go to "Scrolling" tab and check "Vertical Edge Scroll" and uncheck all the others.

If you need other configuration options take a look at the man page for Synaptics.

If Synaptics doesn't support your touchpad use the Gslapt package manager to install libinput and xf86-input-libinput and then restart X. Libinput is used for Wayland input devices and xf86-input-libinput is a wrapper so Xorg-server can use it. It does not have all the options that the Xorg Synaptics driver offers, but it's better than nothing. On my laptop using libinput tap to click is disabled and two finger scrolling is enabled.