Linux – Synaptics touchpad LED support

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How to enable support the LED in Synaptics touchpads?
I'm using Debian Jessie and xserver-xorg-input-synaptics ver. 1.8.1-1.

I found patches by Takashi Iwai from SUSE for LED support in Synaptics touchpads and Debian bug 609903 "enable LEDDoubleTap feature". But these patches are for Synaptics ver. < 1.8 and do not work for me.

Best Answer

You can try this solution:

TODO for clickpad to work with the LED :

(Enable the proposed archive for Ubuntu 12.04 : https://wiki.ubuntu.com/Testing/EnableProposed After dist-upgrade, do this :)

  1. Build a xserver-xorg-input-synaptics with led support package :

    mkdir tmpbuild 
cd tmpbuild
apt-get source
xserver-xorg-input-synaptics d
cd xserver-xorg-input-synaptics-*/debian/patches 
wget https://bugs.launchpad.net/ubuntu/+source/linux/+bug/582809/+attachment/3183411/+files/200-add_led_support_with_double_tap-synaptics-1.6.0-mohegan_V1.patch
ls -1 2*.patch >> series
cd ../.. 
sudo apt-get build-dep xserver-xorg-input-synaptics 
debchange -i

    Add somme comments (for example, "Add LED support with double tap") and quit. 

     debuild -us -uc -i -I
 sudo dpkg -i ../xserver-xorg-input-synaptics_*.deb

  2. Build a dkms module for psmouse

     cd .. 
 apt-get source linux-image-`uname -r`
 sudo mkdir -p /usr/src/psmouse-`uname -r`/src
 sudo cp linux-*/drivers/input/mouse/* /usr/src/psmouse-`uname -r`/src/
 sudo gedit /usr/src/psmouse-`uname -r`/dkms.conf

    put this text, save the file and exit gedit : (remplace your kernel version by the text obtain with the command uname -r. For me, it's 2.6.38-9-generic)

     PACKAGE_NAME="psmouse" PACKAGE_VERSION="_your kernel version_"
 CLEAN="rm -f *.*o"

 BUILT_MODULE_NAME[0]="psmouse" MAKE[0]="make -C $kernel_source_dir
 M=$dkms_tree/$PACKAGE_NAME/$PACKAGE_VERSION/build/src psmouse.ko"
 BUILT_MODULE_LOCATION[0]="src" DEST_MODULE_LOCATION[0]="/updates"

 AUTOINSTALL="yes"

    Close the file and:

     wget https://bugs.launchpad.net/ubuntu/+source/linux/+bug/582809/+attachment/3183441/+files/synaptics_led_support_v2-ubuntu_12.04.patch -P /tmp
 cd /usr/src/psmouse-`uname -r`
 sudo patch -p1 -i /tmp/synaptics_led_support_v2-ubuntu_12.04.patch >          sudo dkms add -m psmouse -v `uname -r`
 sudo dkms build -m psmouse -v `uname -r` 
 sudo dkms install -m psmouse -v `uname -r`

    3) Restart your computer and enjoy !

The patches are for 1.6 sources so you will have to modify them a bit to work with 1.8

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