Configure Synaptics/ALPS/ElanTech touchpad for Chromium OS.

!.md

This project has moved to https://github.com/zhaostu/chromium-os-touchpad.

README.md

Configure Synaptics/ALPS/ElanTech touchpad for Chromiums OS

Note: Many users including me are experiencing alignment issue with touchpad after running this script. That is, the cursor would not show up at where it actually is. Using a USB mouse, however, does not have this problem. There is no known fix yet. If you know a fix, please tell me. Please.

As the vanilla Chromium OS builds defaults to the "cmt" driver, on many laptops the touchpad won't work out of box. This script configures Synaptics/ALPS/Elantech touchpad for your Chromium OS. The script can detect which brand the touchpad you have and install the proper configuration.

Credit goes to ArnoldTheBat as he published the solution here. This script automates the configuration process and (hopefully) installs more generic configurations.

Usage

First you need to become a root user:

• Press Ctrl + Alt + F2 (You can press Ctrl + Alt + F1 to come back).
• Enter username chronos
• Enter password facepunch for Hexxeh builds or password for ArnoldTheBat builds.
• sudu su
• Enter the above password again.

Run the following as root user:

wget -qO- http://goo.gl/C7PoB | sh

Then reboot, and enjoy your touchpad.

Notes

• The configuration files used here are compiled from the Synaptics Touchpad - Gentoo Linux Wiki.
• There are also other places giving example configurations, for example Touchpad Synaptics - ArchWiki and SynapticsTouchpad - Debian Wiki
• The offical documentation for the configuration is in Synaptics man page
• For questions/suggestions, you can email z12y12l12@gmail.com.

alps.xorg.conf

Section "InputDevice"
    Driver      "synaptics"
    Identifier  "TouchPad"
    Option      "SendCoreEvents"
    Option      "Protocol" "auto-dev"
    Option      "SHMConfig" "on"
    Option      "LeftEdge" "130"
    Option      "RightEdge" "840"
    Option      "TopEdge" "130"
    Option      "BottomEdge" "640"
    Option      "FingerLow" "7"
    Option      "FingerHigh" "8"
    Option      "MaxTapTime" "180"
    Option      "MinTapTime" "110"
    Option      "ClickTime" "0"
    Option      "EmulateMidButtonTime" "75"
    Option      "VertScrollDelta" "20"
    Option      "HorizScrollDelta" "20"
    Option      "MinSpeed" "0.40"
    Option      "MaxSpeed" "0.65"
    Option      "AccelFactor" "0.030"
    Option      "EdgeMotionMinSpeed" "200"
    Option      "EdgeMotionMaxSpeed" "200"
    Option      "UpDownScrolling" "1"
    Option      "CircularScrolling" "1"
    Option      "CircScrollDelta" "0.1"
    Option      "CircScrollTrigger" "3"
    Option      "VertEdgeScroll" "on"
    Option      "HorizEdgeScroll" "on"
    Option      "TapButton1" "1"
    Option      "TapButton2" "2"
    Option      "TapButton3" "3"
EndSection

config-touchpad.sh

#!/bin/sh

CONFIG_FILE="/etc/X11/xorg.conf.d/50-touchpad-cmt.conf"

# Check which type of touchpad is present.
if grep -qi synaptics /proc/bus/input/devices; then
  echo "Synaptics touchpad detected."
  TOUCHPAD="synaptics"
elif grep -qi alps /proc/bus/input/devices; then
  echo "ALPS touchpad detected."
  TOUCHPAD="alps"
elif grep -qi elantech /proc/bus/input/devices; then
  echo "Elantech touchpad detected."
  TOUCHPAD="elantech"
else
  echo "No known touchpad found, exiting."
  exit
fi

echo "Mounting the rootfs as read-write..."
mount -o remount, rw /

if [ ! -e "$CONFIG_FILE.bak" ]; then
  echo "Creating backup for $CONFIG_FILE..."
  cp $CONFIG_FILE $CONFIG_FILE.bak
fi

echo "Downloading the configuration file for your touchpad..."
rm $CONFIG_FILE
wget -qO $CONFIG_FILE https://gist.github.com/raw/4552236/$TOUCHPAD.xorg.conf

echo "Configuration finished. Please reboot to make the change effective."

elantech.xorg.conf

Section "InputDevice"
    Driver      "synaptics"
    Identifier  "Touchpad"
    Option      "SendCoreEvents"
    Option      "Protocol" "auto-dev"
    Option      "SHMConfig" "on"
    Option      "VertTwoFingerScroll" "1"
    Option      "HorizTwoFingerScroll" "1"
    Option      "TapButton1" "1"
    Option      "TapButton2" "2"
    Option      "TapButton3" "3"
    Option      "AreaTopEdge" "50"
EndSection

LICENCE

Copyright (c) 2013, Stu Zhao
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met: 

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer. 
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution. 

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

synaptics.xorg.conf

Section "InputDevice"
    Driver      "synaptics"
    Identifier  "TouchPad"
    Option      "SendCoreEvents"
    Option      "Protocol" "auto-dev"
    Option      "SHMConfig" "on"
    Option      "LeftEdge" "1900"
    Option      "RightEdge" "5400"
    Option      "TopEdge" "1400"
    Option      "BottomEdge" "4500"
    Option      "FingerLow" "25"
    Option      "FingerHigh" "30"
    Option      "MaxTapTime" "180"
    Option      "MaxTapMove" "220"
    Option      "VertScrollDelta" "100"
    Option      "MinSpeed" "0.02"
    Option      "MaxSpeed" "0.18"
    Option      "AccelFactor" "0.0010"
    Option      "TapButton1" "1"
    Option      "TapButton2" "2"
    Option      "TapButton3" "3"
EndSection

Its not actually that the button isnt working, it's a problem with the mouse pointer is in the wrong place - if you try it out on a document that contains loads of text, left click and it will highlight somehwere where the cursor is not - this is an issue logged here https://gist.github.com/zhaostu/4552236 - hopefully supported soon...

Damn, so close! If the trackpad was calibrated, it'd be fully usable on an Eee PC 901. I spent hours tinkering with various synaptics options, xorg.conf options, etc. I think the problem lies elsewhere(?)

Hi, i would like to use this script in my build, do you have any regulations about using on a personal/commercial Chromium OS build, also i will do some changes, this cause some hardware configurations does not have Internet ready (wifi, ethernet, bluetooth drivers, or maybe modules not loaded =D),

Great Work =D cheers

@aosi87 Please see the updated gist, I added LICENCE to it.

Here's what worked for me:

ALL COMMANDS AS ROOT UNLESS NOTED

/usr/share/vboot/bin/make_dev_ssd.sh --force --remove_rootfs_verification; reboot

wget -qO- http://goo.gl/C7PoB | sh; reboot

ENJOY!

Tried this on a Dell Mini 10V. No joy. Still no touchpad.

@ofeyvi seems like this script itself is abandonware. Hopefully Google ports some other touchpads instead of expecting their own. :[

FWIW, I updated today, tried eating my own dogfood and it didn't work, until I ran the script from this site, then the first one, and then the script from here again. The good / bad news is, if it works right, the touchpad / mouse settings will drop from "Settings"

aka: "No mouse or touchpad was detected." displayed under "chrome://settings/" in the "Device" heading.

@ofeyvi @infinitechris Sorry that this does not work for you.

I think Google does not intend this os to be running on other hardware, so they don't want to support for this and their own multitouch pad at the same time I guess.

Before I used this I could not move the mouse on my eeePC 1000H but now I can move the mouse but can't click neither with the buttons nor the touchpad.
I hope you can help me with this problem.

Hi, I ran this script, and it detected I had a Synaptics touchpad, remounted the file system, and downloaded the config file, but nothing happened. I am a bit of a noob with Chromium OS and have little linux experience, so please forgive me, and please help.