jeudi 21 avril 2011

Pas de clic droit avec mon touchpad sous ubuntu

Support the for clickpad on Ubuntu is still a bit flaky. Not only are advanced features like enhanced gesture support and multitouch not available out of the box on Ubuntu. Other basic features like right clicking, horizontal scrolling, click and drag etc can be quite a hassle. On Ubuntu 10.04 some of the basic features have been fixed (although multitouch support is still lacking).

Same thing can not be said of Ubuntu 10.10 because there was a regression which make it impossible to right click using the touchpad. Already a bug has been filled concerning the issue which should hopefully be fixed during the Maverick release circle.

Walk Around

The Good news is there is a walk around this issue for those who won’t mind getting their hands dirty with messing around with the command-line. The walk around involves using a psmouse patch submitted by Paul which fixes the issue. (At least for me)

For this walk around some packages would have to be installed namely the build-essential package and the dkms packages. Build-essentials helps install basic tools needed for compiling packages from source, while the dkms ”is a framework designed to allow individual kernel modules to be upgraded without changing the whole kernel. It is also very easy to rebuild modules as you upgrade kernels. framework designed to allow individual kernel modules to be upgraded without changing the whole kernel. It is also very easy to rebuild modules as you upgrade kernels.” which in English means whatever module we patch would not need to be repatched should the system’s kernel be upgraded. (At least that’s the idea)

sudo apt-get install dkms build-essential

The fix involves patching the psmouse module using the paul’s archive which is the mouse source directory for linux 2.6.35-22-generic (The version of Linux Kernal which shipped with Ubuntu 10.10 as at blog time)

First download the archive file from here

save the downloaded file to your desktop

Open a terminal (Application/Accessories/Terminal – Kubuntu users should go /System/Konsole)



Move to the Directory where the archive was saved (In this case the desktop) and extract the content of the archive

cd $HOME/Desktop && tar xvf psmouse-2.6.35-22-generic-patched.tar.bz2.tar

The name of the package as changed since writing this post the new command which reflects the change is

cd $HOME/Desktop && tar jxvf psmouse-2.6.35-22-generic-patched.tar.bz2

Move the extracted folder to /usr/src which is under the root directory hence the command would have to be executed with sudo

sudo mv psmouse-2.6.35-22-generic /usr/src

Move into the /usr/src directory

cd /usr/src

Then install the psmouse module with the following commands running them one after the other

sudo dkms add -m psmouse -v 2.6.35-22-generic

sudo dkms build -m psmouse -v 2.6.35-22-generic

sudo dkms install -m psmouse -v 2.6.35-22-generic

Once installed reboot for the module to be loaded.

If you are still having issues with right clicks. This command would help check if the psmodule is installed

sudo dkms status -m psmouse -v 2.6.35-22-generic

The output should be something like this

psmouse, 2.6.35-22-generic, 2.6.35-22-generic, i686: installed

If it is not installed. It can always be rebuilt with the following command

sudo dkms build -m psmouse -v 2.6.35-22-generic

sudo dkms install -m psmouse -v 2.6.35-22-generic

In case you followed this guide and it did not work for you, or Ubuntu releases an official fix for the issue (in which case you would have to remove the changes made following this guide to prevent conflicts) or for some reason you would like to revert the changes made following this guide. simply do

sudo dkms uninstall -m psmouse -v 2.6.35-22-generic

sudo dkms remove -m psmouse -v 2.6.35-22-generic --all

Following this guide does not lead to the nirvana of clickpad awesomeness (at least not for me). There are still some issues with Jumpy mouse which also affect windows 7. However it does make the clickpad much more useful under Ubuntu even then I would suggest that for serious work it won’t hurt to have a mouse handy :D

NB You can track the bug concerning this issue here

Thanks to Paul and Tob who really helped with the patch which fixes this issue.

I hope someone finds this useful.

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