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I've set up Ubuntu 11.10 in a VirtualBox VM based off the alpha-2 ISO and trying to switch from Unity to Gnome 3. When I select GNOME from the login screen and log in, a popup appears saying

'Failed to load session 'gnome'".

I've got many GNOME packages installed, such as gnome-session. What is missing? Is this supported yet?

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  • Are you still having this problem now that 11.10 has been released?
    – MDCore
    Nov 19, 2011 at 19:44
  • @MDCore, no, it's all working fine. Jan 17, 2012 at 7:17

4 Answers 4

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The GNOME 3 FAQ states:

To get the GNOME 3 experience, you need hardware acceleration.

So, if you are looking to use GNOME in your virtual box, you have to enable hardware acceleration for it.


But, fear not. Developments are going on to make sure that GNOME doesn't have to rely on GPU hardware and soon enough, through LLVMpipe, you should be able to get GNOME experience in your virtualbox without having to enable hardware acceleration.

It's now possible to run the GNOME Shell with Mutter but not having to rely upon any GPU hardware driver! Software rendering is now working with GNOME Shell rather than any fall-back thanks to improvements with Gallium3D's LLVMpipe.

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You need to install gdm:

$ sudo apt-get install gdm
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  • 1
    You should not need to use GDM to launch Gnome3. Jul 26, 2011 at 23:40
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This may help: http://www.omgubuntu.co.uk/2011/10/gnome-shell-ubuntu-11-10-guide/

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As indicated on the Gnome site, you can go to here to install Gnome 3 in Ubuntu. The link should load the Ubuntu Software Center.

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