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I choose in LightDM gnome-classic session.

I launched gnome3 with the classic style (the fallback). But compiz doesn't work.

If I execute compiz --replace compiz starts working.

But how enable automatic loading of compiz? If I add compiz to autostart in gnome starting takes lot of time.

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possible duplicate of How do I enable compiz in Gnome Classic? – Christopher Kyle Horton Mar 14 '12 at 8:45
up vote 1 down vote accepted

Problem was in file /usr/share/gnome-session/sessions/gnome-classic.session in key RequiredProviders in parameter notifications

This parameter causes to fail loading of gnome-classic (which have window manager gnome-wm), and system try to load gnome-fallback (which have window manager metacity). I remove notifications parameter from RequiredProviders key, and my gnome-classic now loading with compiz (gnome-wm loads compiz).

Full story of solving this problem in Russian language:

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The disadvantage of using this method is that you cant add or customise the panels - I think you can only do this via gnome-fallback mode... unless you have any other ideas? – fossfreedom Oct 17 '11 at 8:45
You mean that Alt+Button2 didnt work? I have same problem, its because of compiz, I change key binding settings in compiz-config - so now I can cutomize my gnome panels – avi9526 Nov 3 '11 at 14:38
where is compiz-config ? It is not on my 11.10 system; apt-get does not know about it. I do have Compiz Config Settings Manager (ccsm) - is that what you mean? – djb Jan 6 '12 at 13:39
yes, sorry about that, I mean ccsm. Its hard to clear Alt+Button2 (or Button3, dont remember) keybind because its reset after restart, I dont know why, seems bug. The solution is to set another keybind for window menu. – avi9526 Jan 15 '12 at 3:57
Good that you wrote some things in English. I am Brazilian and for me Russian is like Chinese. Thanks for sharing text in the universal language. It seems that the parameter "notifications;" is useless in the classic gnome session... – user51837 Mar 24 '12 at 2:54

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