Ubuntu 12.04- How to Completely Uninstall / Remove Lxde Core

richardsplanet — Fri, 29 Jun 2012 05:54:47 +0000

These instructions are for Ubuntu 12.04 running the Unity desktop on which the lxde-core window manager was installed using either the Ubuntu Software Center or sudo apt-get on the command line.

The instructions may be the same for other versions of Ubuntu, but no guarantee is made.

When the Lxde Core window manager is installed in Ubuntu 12.04, it installs several packages and libraries it requires. Not all these packages and libraries are uninstalled when you uninstall Lxde Core. Several packages (like xscreensaver) do not get uninstalled.

If you are not sure if you installed lxde-core or lxde, I recommend following the uninstallation instructions on this page.

Even if you decide to opt for the quick uninstall method, at least you will know which flavour of Lxde was installed.

Of course, it doesn’t really matter much. If you uninstall lxde-core when you had installed lxde, then you end up leaving some files behind (but still fewer than if you had uninstalled the normal way). If you uninstall lxde when you had installed lxde-core, then everything will be removed – it is safe to remove / uninstall files that were never installed because they are simply ignored.

Quick Uninstall

This is not recommended because it will remove all packages normally installed with Lxde Core. This may include packages you previously installed (like xscreensaver) or were installed as necessary dependencies for other programs.

Note: this uninstall command assumes Lxde Core was installed on a fresh Ubuntu 12.04.

1) Open a terminal (instructions can be found here).

2) Enter the following command (it is very long and a single line):

sudo apt-get purge --auto-remove  libfm-data libfm-gtk-data libfm-gtk1 libfm1 libglade2-0 libid3tag0 libimlib2  libjpeg-progs libjpeg-turbo-progs libmenu-cache1 libobrender27 libobt0  lxde-common lxde-core lxmenu-data lxpanel lxsession lxshortcut obconf openbox  openbox-themes pcmanfm xscreensaver xscreensaver-data

It is easiest to copy the line and paste it into the terminal (right-click on the terminal and select Paste from the popup menu).

Preferred Uninstall

The better way to uninstall it is to follow the directions on this page.

This will show you on how to uninstall only the packages that were installed when Lxde Core was installed. The instructions are generic and work for any installed package.

It involves:

identifying which packages were installed and
creating a command to uninstall only those packages

It leaves intact any packages you may have installed (like xscreensaver) or that were installed as necessary dependencies for other programs instead of blindly assuming that they were installed along with Lxde Core.

The post Ubuntu 12.04- How to Completely Uninstall / Remove Lxde Core appeared first on Complete, Concrete, Concise.

Ubuntu 12.04 – How to Install the LXDE-Core Desktop

richardsplanet — Thu, 26 Apr 2012 07:00:00 +0000

These instructions are for installing the Lightweight X11 Desktop Environment (LXDE) core in Ubuntu 12.04 running the Unity Desktop.

Installation instructions may be the same or similar for other versions of Ubuntu or for other Linux distros, but no guarantee is made.

The core files give you the basic LXDE desktop environment.

There is also the LXDE Desktop environment. In addition to installing the core LXDE desktop, it also installs some applications. Some of those applications perform the same or similar functions to applications already installed with Ubuntu 12.04. Installation instructions can be found here.

For a complete “Ubuntu” experience using the LXDE desktop consider installing the Lubuntu Desktop. This is the core Ubuntu system configured to use LXDE as its desktop. On the negative side, it also installs many applications that perform the same or similar functions as applications already installed with Ubuntu 12.04. Installation instructions can be found here.

An article listing alternative desktops for Ubuntu 12.04 can be found here.

If you are changing desktops because you are totally lost / confused by Unity, I suggest reading this tutorial and giving Unity a chance.

Of course, if you really hate Unity, then LXDE is an alternative desktop.

LXDE Core will install 19.7MB of files and data to your hard disk.

Some images may be clicked for full sized versions.

What it Looks Like

The basic, straight-out-of-the-box, look of the desktop is:

From the Command Line

If you are comfortable with Linux and know how to use the command line and apt-get then the command is:

sudo apt-get install lxde-core

Detailed instructions for accessing a command line can be found here.

Afterwards, restart your system. It should be enough to just log out and the log back in with the new desktop, but it doesn’t hurt to restart.

From the Ubuntu Software Center

Some images may be clicked for full sized versions.

1) Launch the Ubuntu Software Center by clicking the icon on the Launcher:

2) Enter lxde-core into the search field. This will bring up related entries.

3) Click on the entry Meta-package for the Lightweight X11 Desktop Environment Core – this will highlight it in orange:

4) Click on Install:

5) Enter your password and click Authenticate:

6) After installation is finished, click on the System icon in the upper right corner of the desktop and select Shut Down… from the drop down menu:

Note: it may be enough to just log out and log back in using the new desktop, but it doesn’t hurt to restart either.

7) Click on Restart:

Selecting the Desktop

After the system has restarted, it is necessary to select the new desktop from the login screen.

It is only necessary to select the desktop the first time after installation. Ubuntu will remember your your desktop for future logins.

You can even install multiple desktops and switch between them.

8) Click the icon in the top right of the Login box:

9) Select LXDE:

LXDE is built on top of Openbox and GNOME/Openbox, which is why their entries also appear in the desktop menu. It is best to ignore them since they log into a completely blank desktop.

10) Login

Notice the icon in the upper right hand corner has changed to an open circle. Some, not all, desktop environments will place an icon there.

If an icon is present, it provides a quick way to see which desktop environment you are logging into.

The post Ubuntu 12.04 – How to Install the LXDE-Core Desktop appeared first on Complete, Concrete, Concise.

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