Ubuntu Tutorials

The topic of installing Adobe products in Ubuntu has both been loved and hated by reader since the first time I outlined it. Some very much appreciate the clear steps outlining installation of the PDF reader application. Others despise the idea of proprietary software intermingling with their otherwise open source desktop. However you feel about Adobe Reader, love it or hate it, it is a popular application and in many cases required by users for work or otherwise. With each new Ubuntu release I outline how to install and update your Adobe Reader installation.

Repository Requirements (Optional)

Canonical, the parent company behind Ubuntu, has provided a repository to distribute Adobe Reader and similar applications. The method of installing Ubuntu by way of a repository is more automated than a direct download from the Adobe website. I’ll outline either version, but keep in mind that I prefer (and suggest!) the first. Configuring the partner repository is a requirement for the first option.

Canonical Partner Repository – Option 1

Installation of Adobe Reader 9 requires the activation of the Canonical Partner repository. You can add the Partner repository by following the steps outlined below.

1. Navigate to System > Administration > Software Sources
2. Select “Third Party” or “Other Software”
3. Select “Add” and enter: deb http://archive.canonical.com/ lucid partner

You should now be able to install the latest version of Adobe Reader on Ubuntu 10.04 LTS by using the following command, or clicking the embedded link:

sudo aptitude install acroread

Direct Download: Adobe.com – Option 2

The alternate installation solution is to download Adobe Reader directly from the Adobe website. As a disclaimer, I should warn you that this method will not receive automatic updates and it is left to the user to download and install any future releases of this application.

If you understand these requirements, continue to install Adobe Reader using the following steps:

1. Visit this page: http://get.adobe.com/reader/otherversions/
2. Select “Linux – x86 (.deb)” from the drop-down menu
3. Select your preferred language
4. Download the package

Depending on your browser you may be prompted to open the package with the package installer, or it will simply save it to disk. If it saves to disk, you’ll simply need to double-click the archive for the installation to begin.

Conclusion

Most of my dealings with PDF files is managed by Evince, the default GNOME pdf reader. Occasionally however I need the Adobe-specific application. As with many of the readers here, I prefer the free software solution where possible, but sometimes it just isn’t possible. Love it or hate it, Adobe Reader is sometimes part of our lives.

Again, I would suggest the first solution toward installing Adobe Reader as it will automatically manage security updates for you. The packages are provided directly from Canonical, Ubuntu’s parent company, and managed by Ubuntu staff. I trust these packages just as much (if not more) than the direct-from-adobe packages available in the secondary solution.

I recently wrote an article outlining how to remove the login screen user list in the KDE login screen. This article outlines the same steps, but specific to the GNOME login screen. The instructions here have been tested on Ubuntu 10.04 LTS as well as Ubuntu 9.10. If you would prefer to remove the user list from your login screen and require the username be entered in combination with the password, these instructions will achieve just that.

GDM Changes

I believe it was with Ubuntu 9.10 that the GDM login manager was rewritten and the previous configuration options removed. I know there was a lot of upset about that when it happened. The functionality seemed to be the same, but the configuration options that users had grown used to were now gone. It seems, however, that there are still some settings that can be changed. Perhaps not quite as many, but one of the important ones is still available. If slightly obscure.

Updating Configuration

There are two methods of updating this configuration. There is the command-line one-liner, which I like for it’s quick and easy use. There is also the graphical method. I’ll outline both below. You can follow whichever you feel most comfortable with.

Command Line : gconftool-2

To disable the login screen user list in Ubuntu 10.04, simply run the following command, entering your password when prompted:

sudo -u gdm gconftool-2 --set --type boolean /apps/gdm/simple-greeter/disable_user_list true

The next time you log in you’ll be prompted to enter your username and password, instead of selecting your username from a list.

Graphical Method : gconf-editor

To disable the login screen user list in Ubuntu 10.04 graphically, run the following command and then navigate to the proper key=value pair setting.

sudo -u gdm gconf-editor

Navigate to /apps/gdm/simple-greeter.

Check the box that says “disable user list”, setting the value to true.

disable ubuntu login user list

Whichever method you choose, you’ll end up with the same result. Disabling the list of users at the login screen. I prefer my machine to require the username + password combination. No reason in telling everyone who the machine belongs to, and removing half of the security of the login mechanism.

I am interested in hearing your thoughts on the security vs usability of a user list at login. Do you agree with me or disagree?