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On most laptops, a '''[http://en.wikipedia.org/wiki/Touchpad touchpad]''' is the input device used as a substitute for a computer mouse.
 
On most laptops, a '''[http://en.wikipedia.org/wiki/Touchpad touchpad]''' is the input device used as a substitute for a computer mouse.
 
The term "Synaptics Touchpad" should not be confused with "[[UbuntuHelp:SynapticHowto|Synaptic]]", Ubuntu's Package Manager.
 
The term "Synaptics Touchpad" should not be confused with "[[UbuntuHelp:SynapticHowto|Synaptic]]", Ubuntu's Package Manager.
−
The touchpad will be detected and configured during the Ubuntu installation. However, in Ubuntu 6.06 LTS (Dapper Drake) and Ubuntu 6.10 (Edgy Eft) touchpads may not be detected, in which case scrolling will not work. See the [[troubleshooting Troubleshooting]] section.
+
The touchpad will be detected and configured during the Ubuntu installation. However, in Ubuntu 6.06 LTS (Dapper Drake) and Ubuntu 6.10 (Edgy Eft) touchpads may not be detected, in which case scrolling will not work. See the [[UbuntuHelp:[troubleshooting|Troubleshooting]]] section.
−
[[Anchor(gui)]]
+
Ubuntu 8.10 (Intrepid Ibex) and later completely rework how touchpads are configured and detected.
−
== Configuration with a Graphical Interface ==
+
<<Anchor(gui)>>
−
This sections describes how to install a GUI configuration tool for your Synaptics touchpad which integrates into your desktop environment. Other methods of configuring the touchpad include using [[synclient synclient]] on the command line, or by adding [[xconfig options]] directly to the X server configuration file.
+
== Basic Configuration with a Graphical Interface ==
−
[[Anchor(gsynaptics)]]
+
Ubuntu provides configuration of the most common touchpad options in '''System > Preferences > Mouse''', under the Touchpad tab.
 +
== Advanced Configuration with a Graphical Interface ==
 +
This sections describes how to install a GUI configuration tool for your Synaptics touchpad which integrates into your desktop environment. Other methods of configuring the touchpad include using [[UbuntuHelp:[synclient|synclient]]] on the command line, or by adding [[UbuntuHelp:[xconfig|options]]] directly to the X server configuration file.
 +
<<Anchor(gsynaptics)>>
 
=== Ubuntu ===
 
=== Ubuntu ===
−
* Enable SHMConfig in the X server configuration file as described in the section [[shmconfig Enabling SHMConfig]].
+
* Enable SHMConfig in the X server configuration file as described in the section [[UbuntuHelp:[shmconfig|Enabling SHMConfig]]].
 
* For a preference tool which integrates into the GNOME Desktop environment, install the '''gsynaptics''' package from the universe repository. For help with installing packages see [[UbuntuHelp:InstallingSoftware|InstallingSoftware]].
 
* For a preference tool which integrates into the GNOME Desktop environment, install the '''gsynaptics''' package from the universe repository. For help with installing packages see [[UbuntuHelp:InstallingSoftware|InstallingSoftware]].
 
After installation, '''gsynaptics''' can be found under '''System > Preferences > Touchpad'''.
 
After installation, '''gsynaptics''' can be found under '''System > Preferences > Touchpad'''.
−
[[Anchor(ksynaptics)]]
+
<<Anchor(ksynaptics)>>
 
=== Kubuntu ===
 
=== Kubuntu ===
−
* Enable SHMConfig in the X server configuration file as described in the section [[shmconfig Enabling SHMConfig]].
+
* Enable SHMConfig in the X server configuration file as described in the section [[UbuntuHelp:[shmconfig|Enabling SHMConfig]]].
 
* For a preference tool which integrates into the KDE desktop environment, install the '''ksynaptics''' package from the universe repository. For help with installing packages see [[UbuntuHelp:InstallingSoftware|InstallingSoftware]].
 
* For a preference tool which integrates into the KDE desktop environment, install the '''ksynaptics''' package from the universe repository. For help with installing packages see [[UbuntuHelp:InstallingSoftware|InstallingSoftware]].
 
After installation, '''ksynaptics''' can be found in the '''KDE Control Center'''.
 
After installation, '''ksynaptics''' can be found in the '''KDE Control Center'''.
−
[[Anchor(qsynaptics)]]
+
<<Anchor(qsynaptics)>>
 
=== Xubuntu and others ===
 
=== Xubuntu and others ===
−
* Enable SHMConfig in the X server configuration file as described in the section [[shmconfig Enabling SHMConfig]].
+
* Enable SHMConfig in the X server configuration file as described in the section [[UbuntuHelp:[shmconfig|Enabling SHMConfig]]].
 
* For users of Xfce or anything else besides GNOME or KDE, install the '''qsynaptics''' package from the universe repository. For help with installing packages see [[UbuntuHelp:InstallingSoftware|InstallingSoftware]].
 
* For users of Xfce or anything else besides GNOME or KDE, install the '''qsynaptics''' package from the universe repository. For help with installing packages see [[UbuntuHelp:InstallingSoftware|InstallingSoftware]].
−
[[Anchor(syndaemon)]]
+
<<Anchor(syndaemon)>>
 
== Disabling the Touchpad Temporarily While Typing ==
 
== Disabling the Touchpad Temporarily While Typing ==
 
To avoid accidental mouse movement while typing, '''syndaemon''' can be used to monitor the keyboard activity and disable the touchpad for a period of time after the last keystroke.
 
To avoid accidental mouse movement while typing, '''syndaemon''' can be used to monitor the keyboard activity and disable the touchpad for a period of time after the last keystroke.
−
First enable SHMConfig in the X server configuration file as described in the section [[shmconfig Enabling SHMConfig]].
+
First enable SHMConfig in the X server configuration file as described in the section [[UbuntuHelp:[shmconfig|Enabling SHMConfig]]].
 
The following commands should be typed in a [[UbuntuHelp:UsingTheTerminal|terminal]].
 
The following commands should be typed in a [[UbuntuHelp:UsingTheTerminal|terminal]].
 
The '''-d''' option causes '''syndaemon''' to run in the background, so the terminal can be closed after executing the command.  
 
The '''-d''' option causes '''syndaemon''' to run in the background, so the terminal can be closed after executing the command.  
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</nowiki></pre>
 
</nowiki></pre>
 
To make '''syndaemon''' start up each time you login, add the desired command to the list of Startup Programs in '''System > Preferences > Sessions'''. See [[UbuntuHelp:AddingProgramToSessionStartup|AddingProgramToSessionStartup]].
 
To make '''syndaemon''' start up each time you login, add the desired command to the list of Startup Programs in '''System > Preferences > Sessions'''. See [[UbuntuHelp:AddingProgramToSessionStartup|AddingProgramToSessionStartup]].
−
[[Anchor(shmconfig)]]
+
<<Anchor(shmconfig)>>
 
== Enabling SHMConfig ==
 
== Enabling SHMConfig ==
−
In order for tools such as '''[[synclient synclient]]''', '''[[syndaemon syndaemon]]''', '''[[gsynaptics gsynaptics]]''', '''[[ksynaptics ksynaptics]]''', and '''[[qsynaptics qsynaptics]]''' to work, they need access to the synaptics touchpad driver shared memory. This is done by enabling '''SHMConfig''' "on" in the X server Synaptics Touchpad configuration. With this enabled, these tools can modify the run-time configuration of the touchpad input driver without restarting the X server.
+
'''Note:''' In Ubuntu 8.10 (Intrepid Ibex) and later, tools such as '''xinput''' can alter touchpad settings without needing '''SHMConfig''' to be enabled. However, SHMConfig is still required for some features, and it is now easier to enable.
 +
In order for tools such as '''[[UbuntuHelp:[synclient|synclient]]]''', '''[[UbuntuHelp:[syndaemon|syndaemon]]]''', '''[[UbuntuHelp:[gsynaptics|gsynaptics]]]''', '''[[UbuntuHelp:[ksynaptics|ksynaptics]]]''', and '''[[UbuntuHelp:[qsynaptics|qsynaptics]]]''' to work, they need access to the synaptics touchpad driver shared memory. This is done by enabling '''SHMConfig''' "on" in the X server Synaptics Touchpad configuration. With this enabled, these tools can modify the run-time configuration of the touchpad input driver without restarting the X server.
 
/!\ Note the warning from the man page for synclient:
 
/!\ Note the warning from the man page for synclient:
 
<pre><nowiki>
 
<pre><nowiki>
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     environment. All local users can change the parameters at any time.
 
     environment. All local users can change the parameters at any time.
 
  </nowiki></pre>
 
  </nowiki></pre>
−
If this is an issue for you, the touchpad can be configured without enabling SHMConfig by placing the desired options in the X server configuration file and restarting the X server. See [[xconfig Configuration with the X Server Configuration file]].
+
If this is an issue for you, the touchpad can be configured without enabling SHMConfig by placing the desired options in the X server configuration file or a HAL fdi file and restarting the X server. See [[UbuntuHelp:[xconfig|Configuration with the X Server Configuration file]]].
 +
=== Ubuntu 8.10 and later ===
 +
'''Note:''' For most touchpad options in Ubuntu 8.10 and later, this is unnecessary.
 +
In a [[UbuntuHelp:UsingTheTerminal|terminal]] type:
 +
<pre><nowiki>
 +
gksudo gedit /usr/share/hal/fdi/policy/20thirdparty/11-x11-synaptics.fdi
 +
</nowiki></pre>
 +
Find the section in that file that looks like this:
 +
<pre><nowiki>
 +
      <match key="info.product" contains="Synaptics TouchPad">
 +
        <merge key="input.x11_driver" type="string">synaptics</merge>
 +
        <!-- Arbitrary options can be passed to the driver using
 +
            the input.x11_options property since xorg-server-1.5. -->
 +
        <!-- EXAMPLE:
 +
        <merge key="input.x11_options.LeftEdge" type="string">120</merge>
 +
        -->
 +
      </match>
 +
</nowiki></pre>
 +
That example shows us how to set options for the device. In this case, we need to set SHMConfig to true, so we look at the example and add a line to make that part of the file look like this:
 +
<pre><nowiki>
 +
      <match key="info.product" contains="Synaptics TouchPad">
 +
        <merge key="input.x11_driver" type="string">synaptics</merge>
 +
        <!-- Arbitrary options can be passed to the driver using
 +
            the input.x11_options property since xorg-server-1.5. -->
 +
        <!-- EXAMPLE:
 +
        <merge key="input.x11_options.LeftEdge" type="string">120</merge>
 +
        -->
 +
        <merge key="input.x11_options.SHMConfig" type="string">true</merge>
 +
      </match>
 +
</nowiki></pre>
 +
Save and close that file, log out and back in again, and SHMConfig should be enabled.
 +
=== Ubuntu 8.04 and earlier ===
 
In a [[UbuntuHelp:UsingTheTerminal|terminal]] type:
 
In a [[UbuntuHelp:UsingTheTerminal|terminal]] type:
 
<pre><nowiki>
 
<pre><nowiki>
第64行： 第99行：
 
EndSection
 
EndSection
 
</nowiki></pre>
 
</nowiki></pre>
−
If this section is not present, see [[xinputdevice Adding a Synaptics Touchpad to the X Server Configuration]].
+
If this section is not present, see [[UbuntuHelp:[xinputdevice|Adding a Synaptics Touchpad to the X Server Configuration]]].
 
Add the following line to this section:
 
Add the following line to this section:
 
<pre><nowiki>
 
<pre><nowiki>
第82行： 第117行：
 
</nowiki></pre>
 
</nowiki></pre>
 
To enable the changes log out of your desktop environment, and restart the X server by typing '''Ctrl + Alt + Backspace'''.
 
To enable the changes log out of your desktop environment, and restart the X server by typing '''Ctrl + Alt + Backspace'''.
−
[[Anchor(synclient)]]
+
<<Anchor(synclient)>>
 
== Configuration with synclient ==
 
== Configuration with synclient ==
−
'''synclient''' can be used to adjust touchpad settings from the command line. This will work even if a [[gui GUI Preference tool]] is installed.
+
'''synclient''' can be used to adjust touchpad settings from the command line. This will work even if a [[UbuntuHelp:[gui|GUI Preference tool]]] is installed.
−
Enable SHMConfig in the X server configuration file as described in the section [[shmconfig Enabling SHMConfig]].
+
Enable SHMConfig in the X server configuration file as described in the section [[UbuntuHelp:[shmconfig|Enabling SHMConfig]]].
 
List all settings:
 
List all settings:
 
<pre><nowiki>
 
<pre><nowiki>
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synclient TouchpadOff=0
 
synclient TouchpadOff=0
 
</nowiki></pre>
 
</nowiki></pre>
−
[[Anchor(xconfig)]]
+
<<Anchor(hal)>>
 +
== Configuration with HAL fdi files ==
 +
Ubuntu 8.10 and later provide multiple new means of configuring touchpads. See [[UbuntuWiki:X/Config#hal|the|HAL input section of the X config documentation]] for details.
 +
<<Anchor(xconfig)>>
 
== Configuration with the X Server Configuration file ==
 
== Configuration with the X Server Configuration file ==
−
The options that are shown by the command <code><nowiki>synclient -l</nowiki></code> ([[synclient see above]]) may also be added directly to the touchpad "Input``Device" section in <code><nowiki>/etc/X11/xorg.conf</nowiki></code>. In this case [[shmconfig SHMConfig]] does not need to be enabled.
+
The options that are shown by the command <code><nowiki>synclient -l</nowiki></code> ([[UbuntuHelp:[synclient|see above]]]) may also be added directly to the touchpad "Input``Device" section in <code><nowiki>/etc/X11/xorg.conf</nowiki></code>. In this case [[UbuntuHelp:[shmconfig|SHMConfig]]] does not need to be enabled.
 
For example, to turn the touchpad off, add the line:
 
For example, to turn the touchpad off, add the line:
 
<pre><nowiki>
 
<pre><nowiki>
第119行： 第157行：
 
EndSection
 
EndSection
 
</nowiki></pre>
 
</nowiki></pre>
−
[[Anchor(troubleshooting)]]
+
<<Anchor(troubleshooting)>>
 
== Troubleshooting ==
 
== Troubleshooting ==
 +
'''Note:''' This is largely irrelevant for Ubuntu 8.10 and later.
 
=== Determine Whether a Touchpad Is Configured ===
 
=== Determine Whether a Touchpad Is Configured ===
 
To check if a touchpad is configured, open a [[UbuntuHelp:UsingTheTerminal|terminal]] and check your <code><nowiki>/etc/X11/xorg.conf</nowiki></code> file by typing the following:
 
To check if a touchpad is configured, open a [[UbuntuHelp:UsingTheTerminal|terminal]] and check your <code><nowiki>/etc/X11/xorg.conf</nowiki></code> file by typing the following:
第130行： 第169行：
 
Identifier "Synaptics Touchpad"
 
Identifier "Synaptics Touchpad"
 
</nowiki></pre>
 
</nowiki></pre>
−
then you have a Synaptics Touchpad configured. If not, see [[xinputdevice Adding a Synaptics Touchpad to the X Server Configuration]].  
+
then you have a Synaptics Touchpad configured. If not, see [[UbuntuHelp:[xinputdevice|Adding a Synaptics Touchpad to the X Server Configuration]]].  
−
[[Anchor(xinputdevice)]]
+
<<Anchor(xinputdevice)>>
 
=== Adding a Synaptics Touchpad to the X Server Configuration ===
 
=== Adding a Synaptics Touchpad to the X Server Configuration ===
 
To add support for a touchpad which was not detected the xorg.conf file will need to be edited. In a [[UbuntuHelp:UsingTheTerminal|terminal]] type:
 
To add support for a touchpad which was not detected the xorg.conf file will need to be edited. In a [[UbuntuHelp:UsingTheTerminal|terminal]] type:
第174行： 第213行：
 
Add the following line:
 
Add the following line:
 
<pre><nowiki>
 
<pre><nowiki>
−
Inputdevice "Synaptics Touchpad"
+
InputDevice "Synaptics Touchpad"
 
</nowiki></pre>
 
</nowiki></pre>
 
The result should look like this:
 
The result should look like this:
第181行： 第220行：
 
Identifier "Default Layout"
 
Identifier "Default Layout"
 
Screen "Default Screen"
 
Screen "Default Screen"
−
Inputdevice "Generic Keyboard"
+
InputDevice "Generic Keyboard"
−
Inputdevice "Configured Mouse"
+
InputDevice "Configured Mouse"
−
Inputdevice "stylus" "SendCoreEvents"
+
InputDevice "stylus" "SendCoreEvents"
−
Inputdevice "cursor" "SendCoreEvents"
+
InputDevice "cursor" "SendCoreEvents"
−
Inputdevice "eraser" "SendCoreEvents"
+
InputDevice "eraser" "SendCoreEvents"
−
Inputdevice "Synaptics Touchpad"
+
InputDevice "Synaptics Touchpad"
 
EndSection
 
EndSection
 
</nowiki></pre>
 
</nowiki></pre>

2008年10月19日 (日) 17:28的版本

Geographylogo.png 文章出处: 

https://help.ubuntu.com/community/SynapticsTouchpad

Geographylogo.png 点击翻译: 

English  • 中文

请不要直接编辑翻译本页，本页将定期与来源同步。


  1. title Synaptics Touchpad

On most laptops, a touchpad is the input device used as a substitute for a computer mouse. The term "Synaptics Touchpad" should not be confused with "Synaptic", Ubuntu's Package Manager. The touchpad will be detected and configured during the Ubuntu installation. However, in Ubuntu 6.06 LTS (Dapper Drake) and Ubuntu 6.10 (Edgy Eft) touchpads may not be detected, in which case scrolling will not work. See the [[UbuntuHelp:[troubleshooting|Troubleshooting]]] section. Ubuntu 8.10 (Intrepid Ibex) and later completely rework how touchpads are configured and detected. <<Anchor(gui)>>

Basic Configuration with a Graphical Interface

Ubuntu provides configuration of the most common touchpad options in System > Preferences > Mouse, under the Touchpad tab.

Advanced Configuration with a Graphical Interface

This sections describes how to install a GUI configuration tool for your Synaptics touchpad which integrates into your desktop environment. Other methods of configuring the touchpad include using [[UbuntuHelp:[synclient|synclient]]] on the command line, or by adding [[UbuntuHelp:[xconfig|options]]] directly to the X server configuration file. <<Anchor(gsynaptics)>>

Ubuntu

  • Enable SHMConfig in the X server configuration file as described in the section [[UbuntuHelp:[shmconfig|Enabling SHMConfig]]].
  • For a preference tool which integrates into the GNOME Desktop environment, install the gsynaptics package from the universe repository. For help with installing packages see InstallingSoftware.

After installation, gsynaptics can be found under System > Preferences > Touchpad. <<Anchor(ksynaptics)>>

Kubuntu

  • Enable SHMConfig in the X server configuration file as described in the section [[UbuntuHelp:[shmconfig|Enabling SHMConfig]]].
  • For a preference tool which integrates into the KDE desktop environment, install the ksynaptics package from the universe repository. For help with installing packages see InstallingSoftware.

After installation, ksynaptics can be found in the KDE Control Center. <<Anchor(qsynaptics)>>

Xubuntu and others

  • Enable SHMConfig in the X server configuration file as described in the section [[UbuntuHelp:[shmconfig|Enabling SHMConfig]]].
  • For users of Xfce or anything else besides GNOME or KDE, install the qsynaptics package from the universe repository. For help with installing packages see InstallingSoftware.

<<Anchor(syndaemon)>>

Disabling the Touchpad Temporarily While Typing

To avoid accidental mouse movement while typing, syndaemon can be used to monitor the keyboard activity and disable the touchpad for a period of time after the last keystroke. First enable SHMConfig in the X server configuration file as described in the section [[UbuntuHelp:[shmconfig|Enabling SHMConfig]]]. The following commands should be typed in a terminal. The -d option causes syndaemon to run in the background, so the terminal can be closed after executing the command. 

syndaemon -d

The -t option causes syndaemon to only disable tapping and scrolling, not mouse movements: 

syndaemon -d -t

By default syndaemon disables the touchpad for 2 seconds after the last keyboard activity. To specify a different timeout, use the -i option. For example, a timeout of 1 second: 

syndaemon -d -i 1

To make syndaemon start up each time you login, add the desired command to the list of Startup Programs in System > Preferences > Sessions. See AddingProgramToSessionStartup. <<Anchor(shmconfig)>>

Enabling SHMConfig

Note: In Ubuntu 8.10 (Intrepid Ibex) and later, tools such as xinput can alter touchpad settings without needing SHMConfig to be enabled. However, SHMConfig is still required for some features, and it is now easier to enable. In order for tools such as [[UbuntuHelp:[synclient|synclient]]], [[UbuntuHelp:[syndaemon|syndaemon]]], [[UbuntuHelp:[gsynaptics|gsynaptics]]], [[UbuntuHelp:[ksynaptics|ksynaptics]]], and [[UbuntuHelp:[qsynaptics|qsynaptics]]] to work, they need access to the synaptics touchpad driver shared memory. This is done by enabling SHMConfig "on" in the X server Synaptics Touchpad configuration. With this enabled, these tools can modify the run-time configuration of the touchpad input driver without restarting the X server. /!\ Note the warning from the man page for synclient: 

WARNING: This is not secure if you are in an untrusted multiuser
    environment. All local users can change the parameters at any time.

If this is an issue for you, the touchpad can be configured without enabling SHMConfig by placing the desired options in the X server configuration file or a HAL fdi file and restarting the X server. See [[UbuntuHelp:[xconfig|Configuration with the X Server Configuration file]]].

Ubuntu 8.10 and later

Note: For most touchpad options in Ubuntu 8.10 and later, this is unnecessary. In a terminal type: 

gksudo gedit /usr/share/hal/fdi/policy/20thirdparty/11-x11-synaptics.fdi

Find the section in that file that looks like this: 

      <match key="info.product" contains="Synaptics TouchPad">
        <merge key="input.x11_driver" type="string">synaptics</merge>
        <!-- Arbitrary options can be passed to the driver using 
             the input.x11_options property since xorg-server-1.5. -->
        <!-- EXAMPLE:
        <merge key="input.x11_options.LeftEdge" type="string">120</merge>
        -->
      </match>

That example shows us how to set options for the device. In this case, we need to set SHMConfig to true, so we look at the example and add a line to make that part of the file look like this: 

      <match key="info.product" contains="Synaptics TouchPad">
        <merge key="input.x11_driver" type="string">synaptics</merge>
        <!-- Arbitrary options can be passed to the driver using 
             the input.x11_options property since xorg-server-1.5. -->
        <!-- EXAMPLE:
        <merge key="input.x11_options.LeftEdge" type="string">120</merge>
        -->
        <merge key="input.x11_options.SHMConfig" type="string">true</merge>
      </match>

Save and close that file, log out and back in again, and SHMConfig should be enabled.

Ubuntu 8.04 and earlier

In a terminal type: 

gksudo gedit /etc/X11/xorg.conf

Find the "Input``Device" section for the touchpad: 

Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"	"true"
	Option		"Device"	"/dev/psaux"
	Option		"Protocol"	"auto-dev"
	Option		"HorizScrollDelta"	"0"
EndSection

If this section is not present, see [[UbuntuHelp:[xinputdevice|Adding a Synaptics Touchpad to the X Server Configuration]]]. Add the following line to this section: 

	Option		"SHMConfig"		"on"

The result should look like this: 

Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"	"true"
	Option		"Device"	"/dev/psaux"
	Option		"Protocol"	"auto-dev"
	Option		"HorizScrollDelta"	"0"
	Option		"SHMConfig"		"on"
EndSection

To enable the changes log out of your desktop environment, and restart the X server by typing Ctrl + Alt + Backspace. <<Anchor(synclient)>>

Configuration with synclient

synclient can be used to adjust touchpad settings from the command line. This will work even if a [[UbuntuHelp:[gui|GUI Preference tool]]] is installed. Enable SHMConfig in the X server configuration file as described in the section [[UbuntuHelp:[shmconfig|Enabling SHMConfig]]]. List all settings: 

synclient -l

Examples

Turn touchpad off: 

synclient TouchpadOff=1

Turn touchpad on: 

synclient TouchpadOff=0

<<Anchor(hal)>>

Configuration with HAL fdi files

Ubuntu 8.10 and later provide multiple new means of configuring touchpads. See the|HAL input section of the X config documentation for details. <<Anchor(xconfig)>>

Configuration with the X Server Configuration file

The options that are shown by the command synclient -l ([[UbuntuHelp:[synclient|see above]]]) may also be added directly to the touchpad "Input``Device" section in /etc/X11/xorg.conf. In this case [[UbuntuHelp:[shmconfig|SHMConfig]]] does not need to be enabled. For example, to turn the touchpad off, add the line: 

	Option		"TouchpadOff"		"1"

The result will look like this: 

Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"	"true"
	Option		"Device"	"/dev/psaux"
	Option		"Protocol"	"auto-dev"
	Option		"HorizScrollDelta"	"0"
	Option		"SHMConfig"		"off"
	Option		"TouchpadOff"		"1"
EndSection

<<Anchor(troubleshooting)>>

Troubleshooting

Note: This is largely irrelevant for Ubuntu 8.10 and later.

Determine Whether a Touchpad Is Configured

To check if a touchpad is configured, open a terminal and check your /etc/X11/xorg.conf file by typing the following: 

grep Iden /etc/X11/xorg.conf

If one of the lines is: 

	Identifier	"Synaptics Touchpad"

then you have a Synaptics Touchpad configured. If not, see [[UbuntuHelp:[xinputdevice|Adding a Synaptics Touchpad to the X Server Configuration]]]. <<Anchor(xinputdevice)>>

Adding a Synaptics Touchpad to the X Server Configuration

To add support for a touchpad which was not detected the xorg.conf file will need to be edited. In a terminal type: 

gksudo gedit /etc/X11/xorg.conf

After the lines: 

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
	Option		"CorePointer"
	Option		"Device"		"/dev/input/mice"
	Option		"Protocol"		"ExplorerPS/2"
	Option		"ZAxisMapping"		"4 5"
	Option		"Emulate3Buttons"	"true"
EndSection

add the following: 

Section "InputDevice"
	Identifier	"Synaptics Touchpad"
	Driver		"synaptics"
	Option		"SendCoreEvents"	"true"
	Option		"Device"	"/dev/psaux"
	Option		"Protocol"	"auto-dev"
	Option		"HorizScrollDelta"	"0"
EndSection

Next, find the "Server``Layout" section near the bottom: 

Section "ServerLayout"
	Identifier	"Default Layout"
	Screen		"Default Screen"
	InputDevice	"Generic Keyboard"
	InputDevice	"Configured Mouse"
	InputDevice     "stylus" "SendCoreEvents"
	InputDevice     "cursor" "SendCoreEvents"
	InputDevice     "eraser" "SendCoreEvents"
EndSection

Add the following line: 

	InputDevice	"Synaptics Touchpad"

The result should look like this: 

Section "ServerLayout"
	Identifier	"Default Layout"
	Screen		"Default Screen"
	InputDevice	"Generic Keyboard"
	InputDevice	"Configured Mouse"
	InputDevice	"stylus"	"SendCoreEvents"
	InputDevice	"cursor"	"SendCoreEvents"
	InputDevice	"eraser"	"SendCoreEvents"
	InputDevice	"Synaptics Touchpad"
EndSection

To enable the changes log out of your desktop environment, and restart the X server by typing Ctrl + Alt + Backspace.

Specific Hardware

Apple iBook G4

See also

取自“https://wiki.ubuntu.org.cn/index.php?title=UbuntuHelp:SynapticsTouchpad&oldid=93377”