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Running 12.04 on a thinkpad T520 with nVidia NVIDIA Quadro NVS 4200M graphics. Just updated to the lasted nvidia 310 driver. Everything works great. However, as soon as I attached an external monitor using nvidia twinview, compiz features such as scale (moves all the active windows in one page) stopped working, as well as alt-tab to list all opened programs. Any ideas how i can fix this? never had this problem with 11.04. I can post my xorg.conf if that's of use to you. Thanks much!

edit 1: I am using gnome3 classic

edit 2: alt-tab works -- compiz application switcher (by default for gnome3 / unity) will crash gnome-classic, by changing to "static application switcher" in compiz seemed to solve the problem, but the scale still does not work when an external monitor is attached.

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open a terminal and type

compiz --replace

this should hopefully fix it.

If not, type

sudo apt-get install compizconfig-settings-manager

This will install a settings manager for compiz and related features.

  • I have compiz manager installed, disable and re-enable scale did not work, compiz --replace didn't work either, instead it removed my windows decorator. – adjfac Dec 18 '12 at 16:22
  • In the past compiz --replace hasn't worked well for me because if I close the terminal window that I ran the command from, compiz closes. Try compiz --replace & instead. Whether or not that's the solution to your problem is another matter altogether... – bmaupin Dec 18 '12 at 16:31

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