Unity without bar, icons or buttons after update Ubuntu

After an upgrade to version 16.04 Ubuntu, the desktop / Unity was just empty desktop, only the wallpaper, without any toolbar, icons or buttons. Here's how to solve!

ubu16

Problem

Feito o upgrade para o Ubuntu versão 16.04 and, estranhamente após o login, nada era exibido, a não ser o papel de parede da Unity.

De início pensei ser algo relacionado ao driver do meu notebook, um Dell 7000 series com vídeo intel HD graphics 5500. Mas não!

Tentei fazer um reset na Unity, mas também não funcionou, dando uns erros desse tipo:

unity --reset
 
(process:3694): GLib-WARNING **: In call to g_spawn_sync(), exit status of a child process was requested but ECHILD was received by waitpid(). Most likely the process is ignoring SIGCHLD, or some other thread is invoking waitpid() with a nonpositive first argument; either behavior can break applications that use g_spawn_sync either directly or indirectly.
 
(process:3694): dconf-WARNING **: failed to commit changes to dconf: Error spawning command line 'dbus-launch --autolaunch=5e4fcd4edf7a4496a6dd9153c89c2566 --binary-syntax --close-stderr': Child process killed by signal 68...

Solution

After trying various commands, in my case what really decided was to use a graphical method to bring the Unity plugin back, by doing the following:

Step 1
Try to open the terminal using Ctrl + Alt + T or right-click on the desktop and select “Open terminal” (Open terminal) or change the TTY typing Ctrl + Alt + F1 and login.

Step 2
Install “compizconfig-settings-manager”, running the following command:

sudo apt-get install compizconfig-settings-Manager

Step 3
So, run the program (Compizconfig) running this:

DISPLAY=:0 ccsm &

Note that there will be a screen configuration manager CompizConfig.

Note: If you change the TTY in step 1, go back to graphics mode by pressing Ctrl + Alt + F7 (or Ctrl + Alt + F8).

Step 4
Enable the Ubuntu Unity Plugin Options and OpenGL. Also I enabled all the options of the categories window manager (Windows Management) and desktop (Desktop), In addition to other more.

You may need to reboot to see the result (in my case, It wasn't!). But if you need, go back to the terminal and type

sudo reboot

That's it, the following source that helped me… Thank you!

Source:

http://askubuntu.com/questions/17381/unity-doesnt-load-no-launcher-no-dash-appears

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