Ubuntu custom logon session and desktop environment

I don't know what I installed and what software I unloaded. In short, I lost my Ubuntu Desktop! It's just an empty desktop, and there's no panel. It's really anxious! This is often the case in the past, mostly related to unity and gnome3. I always thought it was a system bug. I searched the internet and it could be improved! Exactly. With this (the Panel disappears), you can customize a desktop that suits you. Don't use unity, gnome3, or panel, just use a dock! ^ _ ^, Simpler than Mac!

Procedure:

1. custom logon session

If it is not automatic login, there will be a selection of 'login session ', such as: gnome, gnome classic, gnome classic (no effects), Ubuntu, ubuntu-2d, Recovery Console, user defined session, xfce and so on. In fact, many of them are not needed. How can we modify them?

Key Directory:/usr/share/xesssions/LS:

 
Gnome-classic.desktop guest-restricted.desktop
Gnome-classic-guest-restricted.desktop ubuntu-2d.desktop
Gnome. Desktop ubuntu. Desktop
Xsession. Desktop gnome-fallback.desktop
Gnome-shell.desktop xterm. Desktop
 

We want to modify these configuration files. Let's take a look at Cat ubuntu. Desktop:

[Desktop entry]
Name = Ubuntu
Comment = this session logs you into Ubuntu
Exec = gnome-session -- session = Ubuntu
Tryexec = unity
Icon =
Type = Application
X-Ubuntu-gettext-domain = gnome-session-3.0
 

Note that the 'name' option in the first line is the name of the session displayed during startup. modify it as needed! There is also '-- session = Ubuntu' in the exec line. This 'ubuntu 'is similar to its identifier. In the future, when automatic logon is set, the 'user-session = *** 'option may use this identifier. After studying these files carefully, you can add the following sentence:

 
Nodisplay =True
 

In this way, the corresponding options will not appear when you log on to the session. Note that the Recovery Console option is in xterm. desktop, and the user-defined session option is in xsession. desktop. We need to customize this file and share it with me:

 
[Desktop entry]
Name = simple
Comment = custom ~ /. Xsession script simple style
Exec =Default-- Session = simple
 

Okay, so that you can hide unnecessary startup items and customize a simple option.

Ii. Set automatic logon to simple session

Configuration File:/etc/lightdm. conf Cat:

 
[Seatdefaults]
Greeter-session = unity-greeter
User-session = simple
Autologin-user = myusername # Be sure to change
Autologin-user-Timeout = 0
 

In this way, automatic logon will load the configuration environment in simple.

Continue to modify the configuration: Cat. dmrc

 
[Desktop]
Language = en_gb.utf8
Layout = us
Session = xsession
 

III. Further settings

After the system is restarted, the system is automatically logged on. However, there is only one desktop, no panel or menu! Do not be afraid. Press CTRL + ALT + T to call up the terminal. After connecting to the network, install a dock software (as per your preferences). The following is a relatively simple one:

 
Sudo apt-Get install Docky
 

Program(Not a few) drag it to the dock and configure a simple desktop environment! In fact, many programs can be called using gnome-terminal, such as calling the program menu of gnome2:

 
Gnome-panel
 

Iv. Summary

When you encounter problems, you need to move your brains.CodeAnd the configuration file, which is more direct and effective. I opened the Chrome browser and realized the full screen effect!