xorg.conf are now ignored... Wait, wait, don't go flaming the Xorg maintainers, but keep on looking rather. This is where I found out about xinput, the new way to customize/parametrize input devices for the X server. And, lets face it, it beats any customization that could have been done in xorg.conf ! Here's how to use it.
First, you'll have to install it from its own package (xinput), as it doesn't come bundled with standard X clients. Second, you can find out about the devices connected to your X server using:
~ xinput --list ⎡ Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ SynPS/2 Synaptics TouchPad id=12 [slave pointer (2)]
It is easy to find the device you're interested in (here, say the touchpad entry). Then, you list the properties you can set/get using:
~ xinput --list-props "SynPS/2 Synaptics TouchPad"
[...]
Synaptics Edge Scrolling (269): 0, 0, 0
The list is quite impressive, so I have only shown the one I'm interested in. You see here everything is 0, which probably explains why edge scrolling is disable (I don't have a clue what the actual numbers mean). You can finally change the properties this way:
xinput --set-prop "SynPS/2 Synaptics TouchPad" "Synaptics Edge Scrolling" 6 6 6
This gave me back edge scrolling. I used a similar approach to enable again the third button emulation... What is neat here is that the property names are readable enough, and there's a lot of them to play with. Great !
