SynapticsTouchpadHowTo

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== For Newbies ==

On laptops, the [http://en.wikipedia.org/wiki/Touchpad touchpad] is the built-in mouse. "Synaptics touchpad" should not be confused with "Synaptic", the Ubuntu Package Manager, or Graphical User Interface for "apt-get" in a terminal.

In Breezy(5.10), laptops with a synaptics touchpad should work out of the box. Go to a terminal and {{{grep}}} (look inside) your {{{/etc/X11/xorg.conf}}} file:
{{{
grep Id /etc/X11/xorg.conf
}}}
If one of the lines is:
{{{
 Identifier "Synaptics Touchpad"
}}}
then you have a Synaptics Touchpad.

{{{qsynaptics}}} (or in KDE {{{ksynaptics}}}) is a GUI which allows you to configure your touchpad. At a terminal, enter:
{{{
sudo apt-get install qsynaptic
}}}
You may need to run {{{qsynaptic -r}}} each time you restart X. Go to System>Preferences>Sessions>Startup Programs> and add it.

== Turning Synaptics Touchpads On/Off with a shortcut key ==

## Thanks to noob_Lance for [http://www.ubuntuforums.org/showthread.php?t=143095 this how-to]

You may wish to turn the touchpad on or off so that it doesn't interfere with typing when using a USB or other mouse.

Use following steps:

'''Step 1'''

from a terminal, edit /etc/xorg.conf
{{{
sudo gedit /etc/X11/xorg.conf
}}}
and look for the following section of code:

{{{
Section "InputDevice"
 Identifier "Synaptics Touchpad"
 Driver "synaptics"
 Option "SendCoreEvents" "true"
 Option "Device" "/dev/psaux"
 Option "Protocol" "auto-dev"
 Option "HorizScrollDelta" "0"
EndSection
}}}
and add one more Option at the End of the Section:
{{{
 Option "SHMConfig" "on"
EndSection
}}}

If you are using an Alps-Touchpad, which you can find out by typing
{{{
cat /proc/bus/input/devices
}}}

your code section should look like this
{{{
Section "InputDevice"
   Driver "synaptics"
   Identifier "TouchPad"
   Option "SendCoreEvents" "true"
 Option "Device" "/dev/input/event2"
   Option "Protocol" "event"
   Option "SHMConfig" "on"
EndSection
}}}

You can define some parameters which influence the behaviour of your touchpad. These parameters are presented already in [https://wiki.ubuntu.com/SynapticsTouchpadWartyHowto?highlight=%28touchpad%29]. You can check if your touchpad works correct and you have the correct parameters with
{{{
synclient -m l
}}}
If everything works fine, the position of your finger will be updated everytime you move it and based on this information you can set your parameters.


'''Step 2'''

Next we will create 3 files - a bash script to turn the touchpad on, one to turn it on, and a python script to use a single key combination for both. At a terminal, {{{cd}}} to {{{/usr/local/bin}}} and make a new file:
{{{
cd /usr/local/bin
sudo gedit tpoff
}}}
and paste the following code in the file, save it and close it.
{{{
#!/bin/bash
#

synclient touchpadoff=1
}}}
again, make a new file:
{{{
sudo gedit tpon
}}}
paste the following, save and close:
{{{
#!/bin/bash
#

synclient touchpadoff=0
}}}
once again, make a new file:
{{{
sudo gedit touchpad.py
}}}
paste the following, save and close
{{{
#!/usr/bin/python
import os
import string
 

def ReadFile():
 myfile = open('/tmp/synclient.tmp', 'rb')
 for line in myfile:
  TestString(line)
 myfile.close()
    
def TestString(string):
 for word in string.split():
  if word == "TouchpadOff":
   setting = string.split()
   ChangeState(setting[2])
 

def ChangeState(current):
 if current == "0":
  os.system("synclient touchpadoff=1")
 else:
  os.system("synclient touchpadoff=0")
 os.system("rm /tmp/synclient.tmp")

def Main():
 ReadFile()
os.system("synclient -l > /tmp/synclient.tmp")
Main()
}}}

and finally, change the permissions of these three files:
{{{
sudo chmod 777 tpon tpoff touchpad.py
}}}

'''Step 3'''

Next, edit your sudoers files to allow you to execute both scripts without a password.
{{{
sudo visudo
}}}
and add this line
{{{
{user} ALL = NOPASSWD: /usr/local/bin/touchpad.py
}}}
where {user} is your user name

save (in nano hit <CTRL> <o>), and make sure to save it as: {{{/etc/sudoers}}}

'''Step 4'''
Next, install xbindkeys
{{{
sudo apt-get install xbindkeys
}}}
when it's done, install xbindkeys-config, the GUI for xbindkeys
{{{
sudo apt-get install xbindkeys-config
}}}
once each is installed, start both applications:
{{{
xbindkeys
}}}and
{{{
xbindkeys-config
}}}

edit your file to the shortcut key you want. For example, to be able to switch the touchpad on/off by <Ctrl><F5>, fill in the following, under Edit:

Name: Touchpad On/Off
Key: Control + F5 | m:0x4 + c:71
Action: /usr/local/bin/touchpad.py

then click apply & save & exit

Now that that is done, restart xbindkeys:

{{{
xbindkeys
}}}

You may need to restart X.

Remember that each time you restart X, you will need to run xbindkeys again in order for the shortcut to work.

## if anyone knows how to have it autorun, please let me know and i'll include it here... -brallan
#REFRESH 0 https://help.ubuntu.com/community/SynapticsTouchpad

SynapticsTouchpadHowTo (last edited 2008-08-06 17:00:08 by localhost)