Script to disable the mouse acceleration on Ubuntu (and probably other distributions).

disable-mouse-accel.sh

#!/usr/bin/env bash

################################################################################
# Description                                                                  #
#     Script to disable the mouse acceleration on Ubuntu (and probably other   #
#     distributions).                                                          #
#                                                                              #
# Author                                                                       #
#     Jonas Gröger <[email protected]>                                   #
#                                                                              #
# Date (date -R)                                                               #
#     Sun, 04 Jan 2015 18:42:52 +0100                                          #
#                                                                              #
# Tested on                                                                    #
#     Ubuntu 14.10.                                                            #
#                                                                              #
# Usage                                                                        #
#     Supply this script with the input-ids of your mouse. You can obtain them #
#     using the 'xinput' command and looking for your mouse there. You may     #
#     have more than one id.                                                   #
#                                                                              #
#     Then, add the script to your autostart and supply it with                #
#     one or more ids:                                                         #
#                                                                              #
#         /path/to/script/disable-mouse-accel.sh 8 1                           #
#                                                                              #
#     This will stop the mouse acceleration for devices 8 and 1. It allows for #
#     multiple ids because some mouses have multiple and some people have more #
#     than one mouse simultaneously.                                           #
#                                                                              #
################################################################################

# Exit on error
set -e

##########################
#    Helper functions    #
##########################

# Returns 0 if $1 is a number. Returns 1 otherwise.
is_number() {
    case "$1" in
        ''|*[!0-9]*) return 1 ;;
        *) return 0 ;;
    esac
}

##########################
# Main application logic #
##########################

if [ $# -eq 0 ]
then
    echo "Usage: ./disable-mouse-accel.sh <device-id> [<device-id>...]"
    exit 126
fi

# Loop through all the input arguments (space separated)
for id in "$@"
do
    # If we have a valid input device id
    if is_number $id
    then
        # Disable the accelerator profile, see: http://superuser.com/a/260131
        xinput --set-prop $id "Device Accel Profile" -1
        echo -e "\e[32m[\u2713 ]\e[0m Disabled acceleration for device $1."
    fi
done