Differences between revisions 27 and 54 (spanning 27 versions)
Revision 27 as of 2011-04-24 16:59:08
Size: 7996
Comment: minor fixes
Revision 54 as of 2020-11-29 12:36:12
Size: 9195
Editor: nodiscc
Comment: CategoryHardware
Deletions are marked like this. Additions are marked like this.
Line 1: Line 1:
#language en
Line 2: Line 3:
~-[[DebianWiki/EditorGuide#translation|Translation(s)]]: English - [[it/SynapticsTouchpad|Italiano]]-~ ~-[[DebianWiki/EditorGuide#translation|Translation(s)]]: English - [[fr/SynapticsTouchpad|Français]] - [[it/SynapticsTouchpad|Italiano]]-~
Line 7: Line 8:
=== Determining the type of Touchpad === == Introduction ==
Line 9: Line 10:
The following command will tell you whether you have a Synaptics, Alps or [[DebianEeePC/HowTo/ElantechTouchpad|Elantech touchpad]]: This document is applicable to squeeze, wheezy, jessie and stretch.

== Determining the type o
f Touchpad ==

The f
ollowing command will tell you whether you have a Synaptics, ALPS or [[DebianEeePC/HowTo/ElantechTouchpad|Elantech touchpad]]:
Line 12: Line 17:
egrep -i 'synap|alps|etps' /proc/bus/input/devices egrep -i 'synap|alps|etps|elan' /proc/bus/input/devices
Line 17: Line 22:
=== In case you don't have an xorg.conf === == Desktop configuration ==
Line 19: Line 24:
Create one with the following commands in a terminal: Some desktop environments such as GNOME and KDE can allow you to adjust settings of your touchpad through a graphical system settings panel.
Line 21: Line 26:
{{{
Xorg :1 -configure
}}}
If you can't find a Touchpad or Synaptics tab in your system settings, or the settings you wish to change cannot be changed through the GUI, follow the instructions below to configure system-wide via {{{/etc/X11/xorg.conf.d/synaptics.conf}}}. However, be aware that it is likely your desktop preferences, if you have them, will override your system-wide settings.
Line 25: Line 28:
Alternatively, reboot the machine in single user mode, and type the following commands: <<Anchor(Stretch)>>
=== Debian 9 "Stretch" ===
Line 27: Line 31:
{{{
Xorg -configure
}}}
In [[#libinput|most cases]], make sure you have DebianPkg:xserver-xorg-input-libinput DebianPkg:xserver-xorg-input-evdev DebianPkg:xserver-xorg-input-mouse installed, and not the DebianPkg:xserver-xorg-input-synaptics package.
Line 31: Line 33:
Then follow the on-screen instructions. This should give you something to work with. Read: https://en.wikipedia.org/wiki/Evdev for more info on evdev.
Line 33: Line 35:
Note: {{{Xorg -configure}}} may not always work, as indicated in Xorg(1). In any case, if you are using Squeeze, read on, as you no longer need a full xorg.conf. <<Anchor(Wheezy)>>
=== Debian 7 "Wheezy" ===

On GNOME, click the system menu (top-right corner), select System Settings, then select "Mouse and Touchpad" (under Hardware).

On KDE:
 1. Install the DebianPkg:kde-config-touchpad package.
 1. Open System Settings from the Kickoff Application Launcher, go to Input Devices (under Hardware) and select the "Touchpad" tab.

<<Anchor(Squeeze)>>
=== Debian 6.0 "Squeeze" ===

On GNOME, go to System -> Preferences -> Mouse, there should be a "Touchpad" tab.

On KDE:
 1. Install the DebianPkg:kde-config-touchpad package.
 1. Go to System Settings -> Input Devices, there should be a "Touchpad" tab.

== System-wide configuration ==
Line 43: Line 63:
=== Debian squeeze, kernel 2.6.32-4 and later, Xorg 7.5 === === Override options in /etc/X11/xorg.conf.d/synaptics.conf ===
Line 45: Line 65:
You should use a file in {{{/etc/X11/xorg.conf.d}}}, e.g. {{{/etc/X11/xorg.conf.d/synaptics.conf}}}, for configuration (but this will work just as well in {{{/etc/X11/xorg.conf}}}). The following example shows how to enable tapping and how to configure various other options; you probably won't need everything in it. Comment out any old config for synaptics before replacing it with this new config. At start, Xorg reads vendor-supplied configuration commands from directory /usr/share/X11/xorg.conf.d (details in {{{man xorg.conf.d}}}).
Line 47: Line 67:
(DebPkg:xserver-xorg-input-synaptics (in Squeeze) has tapping disabled by default for touchpads with one or more physical buttons; see {{{/usr/share/doc/xserver-xorg-input-synaptics/NEWS.Debian.gz}}}. For a list of available options, see {{{synclient -l}}} . Not all options are appropriate; for example, Elantech touchpads don't report pressure, and many other touchpads don't support multitouch.) If you want to override the defaults system-wide, use a file in {{{/etc/X11/xorg.conf.d}}}, e.g. {{{/etc/X11/xorg.conf.d/synaptics.conf}}}, for configuration (but this will work just as well in a combined {{{/etc/X11/xorg.conf}}} file). {{{/usr/share/X11/xorg.conf.d}}} contains distro-supplied samples which can be copied over (or at least keep an eye on their settings when creating your own configuration). The following example shows how to enable tapping and how to configure various other options; you probably won't need everything in it. Comment out any old config for synaptics before replacing it with this new config.
Line 49: Line 69:
Note: ''If you are using Gnome, you may enable tapping through your desktop settings. Go to System -> Preferences -> Mouse, then, on the third tab "Touchpad", check the "Enable mouse clicks with touchpad" option. '' (DebianPkg:xserver-xorg-input-synaptics has tapping disabled by default for touchpads with one or more physical buttons; see {{{/usr/share/doc/xserver-xorg-input-synaptics/NEWS.Debian.gz}}}. For a list of available options, see {{{synclient -l}}} . Not all options are appropriate; for example, Elantech touchpads don't support pressure, and many other touchpads don't support multitouch.)
Line 77: Line 97:
==== Multitouch ==== === Multitouch ===
Line 100: Line 120:

=== Debian squeeze, kernel 2.6.30-1, Xorg 7.4 ===

If you are using a generic synaptic touchpad, but it fails to respond to tapping or scrolling actions under a new installation of Squeeze (as in testing), you can run the following two commands to immediately make it work:
=== Enable tapping on touchpad ===
Debian 9 "Stretch" is using libinput driver
Line 106: Line 124:
modprobe -r psmouse
modprobe psmouse proto=imps
$ mkdir -p /etc/X11/xorg.conf.d
$ echo 'Section "InputClass"
        Identifier "libinput touchpad catchall"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
        Option "Tapping" "on"
EndSection' > /etc/X11/xorg.conf.d/40-libinput.conf
$ systemctl restart lightdm
Line 110: Line 135:
To make this change permanent, create a file such as touchpad.conf under {{{/etc/modprobe.d/}}}, and put the following line in it:
Line 112: Line 136:
{{{
options psmouse proto=imps
}}}

You do not need to install gsynaptics, synaptic, tpconfig or edit xorg.conf. All you need is passing the kernel options for module psmouse.

==== Asus F3JC ====
On an Asus F3JC, most features of its Synaptics touchpad were not automatically detected by Xorg 7.4 although the xorg synaptics driver was already installed.

1. Install the driver, if not already installed
{{{
aptitude update
aptitude install xserver-xorg-input-synaptics
}}}

2. Edit '''/etc/X11/xorg.conf'''

{{{
Section "Module"
    Load "synaptics"
EndSection
}}}

{{{
Section "InputDevice"
    Identifier "Mouse0"
    Driver "synaptics"
    Option "Protocol" "auto"
    Option "Device" "/dev/psaux"
    Option "Emulate3Buttons" "no"
    Option "ZAxisMapping" "4 5"
Option "TapButton1" "1"
Option "SpecialScrollAreaRight" "true"
Option "VertEdgeScroll" "true"
Option "VertTwoFingerScroll" "true"

EndSection
}}}

''Note: on my Squeeze with Fluxbox, I had to add gsynaptics-init [I used gsynaptics] on my startup list program ~/.fluxbox/startup'' --LucaGentile

=== Debian Lenny, kernel 2.6.21, Xorg 7.3 ===
On a Dell Latitude C610, very little was needed to configure the more advanced features of the touchpad. The touchpad was detected and package free86-driver-synaptics was already installed.

1. Edit '''/etc/X11/xorg.conf'''
Find the section regarding the Touchpad (which is correctly recognised during installation) and add the option SHMConfig "on"

{{{
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
}}}

2. Restart X: close all unsaved documents, then ctrl-alt-backspace (you could also reboot)

3. install a package to act as a control panel for the touchpad. I used gsynaptics; there are a number of choices, including ksynaptics and qsynaptics.

4. Launch your control panel to finish configuration. The touchpad works as a mouse even before these steps, but with the control panel you can add the functionality of the right edge of the touchpad being a scroll cursor zone (like a mouse scroll wheel).

At this point, the touchpad works, including in firefox/iceweasel.

Read the rest of this page for more tips, which are still relevant to recent kernels.


=== The syndaemon Helper ===
== The syndaemon Helper ==
Line 193: Line 147:
== Troubleshooting ==

=== Touchpad does not work after resuming from hibernate/suspend ===

Sometimes when resuming from hibernate/suspend mode, the touchpad may stop working, even if {{{synclient}}} reports it as activated.

The following solutions were reported to get the touchpad working again:

  * Switch to a console, then switch back to X again

or

  * Hibernate/suspend again, then resume again

or

  * Unload the touchpad kernel module, then load it again.
    '''Warning''': this should NOT be done from within an X session (or the X server will crash), but from a virtual console. E.g.:
    1. Go to a virtual console, press {{{Ctrl-Alt-F2}}}
    2. Log in as root and unload/load the relevant kernel module, e.g. {{{modprobe -r psmouse ; modprobe psmouse}}}
    3. Go back to the X session, press {{{Ctrl-Alt-F1}}}

<<Anchor(libinput)>>
=== Change to libinput Xorg driver in Debian 9 "Stretch" ===

The ''synaptic'' Xorg driver in being superseded by the newer ''libinput'' driver, which can provide lower-level access to multi touch events to clients, but is currently lacking some features found in the older driver.

You can make the ''synaptics'' driver take precedence over ''libinput'' by copying {{{/usr/share/X11/xorg.conf.d/50-synaptics.conf}}} into {{{/etc/X11/xorg.conf.d}}}, so as to make it take precendence over the libinput configuration file found at {{{/usr/share/X11/xorg.conf.d/90-libinput.conf}}}.

The {{{synclient}}} and {{{syndaemon}}} commands don't work with the ''libinput'' driver and will instead exit with an error message such as:

{{{
$ synclient
Couldn't find synaptics properties. No synaptics driver loaded?
$ syndaemon
Unable to find a synaptics device.
}}}

The ''synaptics'' driver is provided by DebianPkg:xserver-xorg-input-synaptics.
The ''libinput'' driver is provided by DebianPkg:xserver-xorg-input-libinput.

To reenable a disabled touchpad in gnome on stretch:
{{{
gsettings set org.gnome.desktop.peripherals.touchpad send-events 'enabled'
}}}

Some devices have function keys to enable and disable the touchpad; after the initial transition from the ''synaptics'' driver to the ''libinput'' driver, those devices may default to disabling the touchpad. Toggling the touchpad enable/disable keyboard key may be required to get the touchpad working again.
Line 194: Line 195:
CategoryLaptopComputer CategoryLaptopComputer CategoryHardware

Translation(s): English - Français - Italiano


Introduction

This document is applicable to squeeze, wheezy, jessie and stretch.

Determining the type of Touchpad

The following command will tell you whether you have a Synaptics, ALPS or Elantech touchpad:

egrep -i 'synap|alps|etps|elan' /proc/bus/input/devices

(Elantech support was enabled in Linux kernel 2.6.32-4.)

Desktop configuration

Some desktop environments such as GNOME and KDE can allow you to adjust settings of your touchpad through a graphical system settings panel.

If you can't find a Touchpad or Synaptics tab in your system settings, or the settings you wish to change cannot be changed through the GUI, follow the instructions below to configure system-wide via /etc/X11/xorg.conf.d/synaptics.conf. However, be aware that it is likely your desktop preferences, if you have them, will override your system-wide settings.

Debian 9 "Stretch"

In most cases, make sure you have xserver-xorg-input-libinput xserver-xorg-input-evdev xserver-xorg-input-mouse installed, and not the xserver-xorg-input-synaptics package.

Read: https://en.wikipedia.org/wiki/Evdev for more info on evdev.

Debian 7 "Wheezy"

On GNOME, click the system menu (top-right corner), select System Settings, then select "Mouse and Touchpad" (under Hardware).

On KDE:

  1. Install the kde-config-touchpad package.

  2. Open System Settings from the Kickoff Application Launcher, go to Input Devices (under Hardware) and select the "Touchpad" tab.

Debian 6.0 "Squeeze"

On GNOME, go to System -> Preferences -> Mouse, there should be a "Touchpad" tab.

On KDE:

  1. Install the kde-config-touchpad package.

  2. Go to System Settings -> Input Devices, there should be a "Touchpad" tab.

System-wide configuration

Read the manual

This manual will tell you all the options that are available for the synaptics driver:

man 4 synaptics

Override options in /etc/X11/xorg.conf.d/synaptics.conf

At start, Xorg reads vendor-supplied configuration commands from directory /usr/share/X11/xorg.conf.d (details in man xorg.conf.d).

If you want to override the defaults system-wide, use a file in /etc/X11/xorg.conf.d, e.g. /etc/X11/xorg.conf.d/synaptics.conf, for configuration (but this will work just as well in a combined /etc/X11/xorg.conf file). /usr/share/X11/xorg.conf.d contains distro-supplied samples which can be copied over (or at least keep an eye on their settings when creating your own configuration). The following example shows how to enable tapping and how to configure various other options; you probably won't need everything in it. Comment out any old config for synaptics before replacing it with this new config.

(xserver-xorg-input-synaptics has tapping disabled by default for touchpads with one or more physical buttons; see /usr/share/doc/xserver-xorg-input-synaptics/NEWS.Debian.gz. For a list of available options, see synclient -l . Not all options are appropriate; for example, Elantech touchpads don't support pressure, and many other touchpads don't support multitouch.)

Section "InputClass"
        Identifier      "Touchpad"                      # required
        MatchIsTouchpad "yes"                           # required
        Driver          "synaptics"                     # required
        Option          "MinSpeed"              "0.5"
        Option          "MaxSpeed"              "1.0"
        Option          "AccelFactor"           "0.075"
        Option          "TapButton1"            "1"
        Option          "TapButton2"            "2"     # multitouch
        Option          "TapButton3"            "3"     # multitouch
        Option          "VertTwoFingerScroll"   "1"     # multitouch
        Option          "HorizTwoFingerScroll"  "1"     # multitouch
        Option          "VertEdgeScroll"        "1"
        Option          "CoastingSpeed"         "8"
        Option          "CornerCoasting"        "1"
        Option          "CircularScrolling"     "1"
        Option          "CircScrollTrigger"     "7"
        Option          "EdgeMotionUseAlways"   "1"
        Option          "LBCornerButton"        "8"     # browser "back" btn
        Option          "RBCornerButton"        "9"     # browser "forward" btn
EndSection

It is normal for a touchpad to be presented as both a Synaptics device and as an ImPS/2 device. If this is so, then /var/log/Xorg.0.log should show that X has found a touchpad on /dev/input/event6 (for example) and probably also that it has failed to do so on /dev/input/mouse0 (for example). This is fine.

Multitouch

If multitouch doesn't work for you, your hardware may not support it, but you can use the following options to emulate multitouch which allows most of the features to work. Try adding these lines to the Touchpad section (shown above):

        Option          "EmulateTwoFingerMinZ"  "35"
        Option          "EmulateTwoFingerMinW"  "8"

You can check which buttons are reported in Xorg.0.log to see if you have multitouch. A touchpad without this capability reports only the usual "left", "right" and "middle" buttons:

$ grep "TouchPad: buttons:" /var/log/Xorg.0.log
(II) SynPS/2 Synaptics TouchPad: buttons: left right middle

A touchpad with multitouch reports "double" for two-finger multitouch and "triple" for three-finger multitouch:

$ grep "TouchPad: buttons:" /var/log/Xorg.0.log
(II) SynPS/2 Synaptics TouchPad: buttons: left right middle double triple

Enable tapping on touchpad

Debian 9 "Stretch" is using libinput driver

$ mkdir -p /etc/X11/xorg.conf.d
$ echo 'Section "InputClass"
        Identifier "libinput touchpad catchall"
        MatchIsTouchpad "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
        Option "Tapping" "on"
EndSection' > /etc/X11/xorg.conf.d/40-libinput.conf
$ systemctl restart lightdm

The syndaemon Helper

syndaemon is able to help with a number of things, including palm-check and such. one possibility for loading this at X startup for all users is to add a separate file in /etc/X11/Xsession.d (i.e. /etc/X11/Xsession.d/98x11-syndaemon)

# This file is sourced by Xsession(5), not executed.

# Load settings from ~/.qsynaptics
/usr/bin/qsynaptics -r

# start synaptics daemon to enable proper communication with touchpad
/usr/bin/syndaemon -d -t -k -i 1

This also loads settings from the qsynaptics control panel. This can of course be omitted. If you leave it in, you should make sure all new users have sensible options set by copying a working .qsynaptics to /etc/skel.

Troubleshooting

Touchpad does not work after resuming from hibernate/suspend

Sometimes when resuming from hibernate/suspend mode, the touchpad may stop working, even if synclient reports it as activated.

The following solutions were reported to get the touchpad working again:

  • Switch to a console, then switch back to X again

or

  • Hibernate/suspend again, then resume again

or

  • Unload the touchpad kernel module, then load it again.
    • Warning: this should NOT be done from within an X session (or the X server will crash), but from a virtual console. E.g.:

    • Go to a virtual console, press Ctrl-Alt-F2

    • Log in as root and unload/load the relevant kernel module, e.g. modprobe -r psmouse ; modprobe psmouse

    • Go back to the X session, press Ctrl-Alt-F1

Change to libinput Xorg driver in Debian 9 "Stretch"

The synaptic Xorg driver in being superseded by the newer libinput driver, which can provide lower-level access to multi touch events to clients, but is currently lacking some features found in the older driver.

You can make the synaptics driver take precedence over libinput by copying /usr/share/X11/xorg.conf.d/50-synaptics.conf into /etc/X11/xorg.conf.d, so as to make it take precendence over the libinput configuration file found at /usr/share/X11/xorg.conf.d/90-libinput.conf.

The synclient and syndaemon commands don't work with the libinput driver and will instead exit with an error message such as:

$ synclient
Couldn't find synaptics properties. No synaptics driver loaded?
$ syndaemon
Unable to find a synaptics device.

The synaptics driver is provided by xserver-xorg-input-synaptics. The libinput driver is provided by xserver-xorg-input-libinput.

To reenable a disabled touchpad in gnome on stretch:

gsettings set org.gnome.desktop.peripherals.touchpad send-events 'enabled'

Some devices have function keys to enable and disable the touchpad; after the initial transition from the synaptics driver to the libinput driver, those devices may default to disabling the touchpad. Toggling the touchpad enable/disable keyboard key may be required to get the touchpad working again.


CategoryLaptopComputer CategoryHardware