I had installed Ubuntu 12.10 desktop i386 on Virtualbox 4.2.12 on Windows 7. After enabling 3d acceleration in settings, launcher (left side application pane\taskbar) did not appear. So I disabled it and I got like this:

enter image description here

I ran the command unity --replace and the following was shown. The launcher first came into view and immediately disappeared being replaced by the gray area as shown in the above image.

Here is the output of unity --replace

Please offer your assistance in helping me solve this problem.


You can try to reset Unity settings. Type this into your Terminal (press CTRL+ALT+T):

sudo apt-get install dconf-tools && dconf reset -f /org/compiz/ && setsid unity

If unity doesn't correctly restart, then just restart the PC, and it should work again.

| improve this answer | |
  • >Reading package lists... Done<br> Building dependency tree <br> Reading state information... Done<br> dconf-tools is already the newest version.<br> You might want to run 'apt-get -f install' to correct these:<br> The following packages have unmet dependencies:<br> libstdc++6-4.7-dev : Depends: g++-4.7 (= 4.7.2-2ubuntu1) but it is not installable<br> E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).<br> ubuntu@ubuntu-VirtualBox:~$<br> – chndn Jun 16 '13 at 15:26
  • @chndn You already have dconf-tools. So just type: dconf reset -f /org/compiz/ && setsid unity You also have some problems with some packages. To fix them type: sudo apt-get -f install – Sapd Jun 16 '13 at 15:28
  • It is working thnx (if any problem persisits i will let u know) thanku for your help .. +1 – chndn Jun 16 '13 at 15:52

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