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Unity will not start

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maarten derksen's picture
Starter
maarten derksen

Feb 24, 2016 - 10:02am

  • After installing the intel linux graphics installer, on Ubuntu 15.10, Unity will not start. I get only a desktop (so nautilus does start), but nothing else. When I try to start Unity from a terminal, there is an error that the opengl plugin (which compiz depends on) can't be found. Mesa is installed however. Does anyone know of a way to solve this?

    Feb 24, 2016 - 10:02am
  • That's weird - can you paste the exact error message here?

    Feb 24, 2016 - 03:36pm
  • The relevant line is: compiz (core) - Error: Plugin 'opengl' not loaded.

    Feb 24, 2016 - 10:49pm
  • Is this what's going on? (ignoring the nvidia part - focussing on the libglx part).
    https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1342339

    Also, does tweaking the gsettings as noted here work around the problem?
    https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1166765/comments/9

    Feb 25, 2016 - 09:52am
  • The error message is the same. Tweaking the gsettings with the procedure mentioned in the comment did not work. (And I immediately lost my mouse pointer.)

    However, Gnome does work, and when I run 

    gsetting get org.compiz.core:/org/compiz/profiles/unity/plugns/core/ active-plugins

    in Gnome, then opengl is one of the active plugins.

    Also: in /usr/lib/xorg/modules/extensions/ there is only one libglx.so, so that can't be the problem.

    Feb 25, 2016 - 10:19am
  • I've gone back into Unity, I still don't get the launchers or the top bar, but I can now switch windows and screens. And when I run 

    gsetting get org.compiz.core:/org/compiz/profiles/unity/plugns/core/ active-plugins

    in a terminal, opengl is one of the active plugins.

    Feb 25, 2016 - 10:39am
  • I solved it be enabling the Unity plugin in the Compiz config setting manager, as described here: http://askubuntu.com/questions/17381/unity-doesnt-load-no-launcher-no-da...

     

    Feb 26, 2016 - 03:51am
  • Glad you found a fix... any idea why it was off? Nothing in the install process should go anywhere near those settings.

    Feb 26, 2016 - 08:54am
  • I have no idea, but I do remember that when I ran the graphics installer the first time, there seemed to be a hitch, and I had to run it again. But what caused the problem I don't know. Thanks for your help anyway.

    Feb 26, 2016 - 09:02am
  • Ok- thanks for letting us know about the fix.

    Mar 01, 2016 - 06:51am