Touchpad settings are grayed out

[Rex Dieter]

Sudhir Khanger wrote:

> Hi,
> 
> Mouse Click Emulation in Taps and horizontal scrolling in Two-finger
> scrolling are disabled in SystemSettings>Input on a freshly installed
> F22 running on Thinkpad T420i.
> 
> Tapping on the touchpad can't emulate right or left click. Horizontal
> scrolling is enabled by default and can't be disabled.
> 
> How do I gain back the ability to modify these options?
> 

See also,
https://bugzilla.redhat.com/show_bug.cgi?id=1225579

I'll quote what I wrote there
-----------------
As part of
https://fedoraproject.org/wiki/Changes/LibinputForXorg

libinput is used instead of (classic) synaptics driver, but it has less 
features, as you noted.

To switch away from libinput, remove the package
xorg-x11-drv-libinput

and reboot.  kcm_touchpad should then give more features (like edge 
scrolling customization)
----------------

Unfortunately, some(most?) folks trying to use the synaptics fallback run 
into another bug,

https://bugzilla.redhat.com/show_bug.cgi?id=1199825


-- Rex