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I Just installed gnome-shell in my 12.04 box and, unity disappears from the login screen.

This is what I've done trying to fix:

  1. #Exec: unity --reset`
  2. Purge and install: indicator-session
  3. Set Display full username to true in gsettings


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is it related to this?… – dado_eyad Jun 5 '12 at 12:13
I tried "sudo apt-get install indicator-applet-complete" yesterday. By the way, sound applet is working. – Jhonnytunes Jun 5 '12 at 12:30

Try this:

Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command below.

sudo apt-get install --reinstall ubuntu-desktop

If you have compizConfig Setting Manager installed then try

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Let me try that.... – Jhonnytunes Jun 5 '12 at 11:50
Let me know if it works. – Mitch Jun 5 '12 at 11:53
Didnt work, I've exec that command and reboot, username still missing so do the icon of user. – Jhonnytunes Jun 5 '12 at 12:02
Do I have to exec: "ccsm" after "sudo apt-get install --reinstall ubuntu-desktop" ? – Jhonnytunes Jun 5 '12 at 12:31
No, just try that to see if there is any conflicts, and try to resolve them. – Mitch Jun 5 '12 at 12:33

If you were using compizconfig-settings-manager and messed up your desktop. Only thing that worked successfully for me, was repair it with the same program..

  1. Ctrl +Alt+T (To open terminal)
  2. ccsm (To start program.)
  3. Repair what you have messed up.

All other stuff what you can find online, such as

sudo apt-get install --reinstall ubuntu-desktop

haven't give any result. It was just waste of time.

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Just open CCSM, scroll down to Desktop, click on Ubuntu Unity Plugin, make sure Enable Unity Plugin is checked in the box on the left side panel of the CCSM window.

enter image description here

That fixed mine. No reboot required.

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There is no such check box in CCSM in 12.04. – jokerdino Sep 24 '12 at 6:51
Yes, there is. See screen-shot. – Peachy Sep 25 '12 at 13:35
up vote 1 down vote accepted

Re-Installed ubuntu, the name is missing just because I disable guest-account.

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