If you are one of the few with a none working touch pad, hopefully the below will sort it!
As ever, boot your device and get to su command line ([ Ctrl ] [ Alt ] [ F2 ]), log in as chronos and then
sudo su mount -o remount, rw / cp /etc/X11/xorg.conf.d/50-touchpad-cmt.conf /etc/X11/xorg.conf.d/50-touchpad-cmt.conf.bak rm /etc/X11/xorg.conf.d/50-touchpad-cmt.conf cd /etc/X11/xorg.conf.d/ wget http://chromium.arnoldthebat.co.uk/files/fw/etc/X11/xorg.conf.d/50-touchpad-cmt.conf
The contents of the conf file have been ripped from a Dell Latitude setup so may well not sort other laptops. In this case I would suggest that the file is structured in the following manner:
Section "InputClass" Identifier "touchpad" MatchIsTouchpad "on" MatchDevicePath "/dev/input/event*" Driver "synaptics" Option "AccelerationProfile" "-1" Option "Scroll Buttons" "0" Option "Scroll Axes" "1" Option "Scroll X Out Scale" "1.25" Option "Scroll Y Out Scale" "1.25" EndSection
The important section is the “Driver “synaptics”” since the devs at Chromium have left the old synaptics stack loaded into the distribution. With this in mind, expect the above to stop working as later versions come out!
Occasionally in certain screens (like login(!)), once the screen is loaded, the mouse pointer will not appear. In order to activate simply left click anywhere on the screen.
Any dev server updates will more than likely undo any of the above so please bear that in mind.
Usual caveats around none of this ever working etc.