Is it possible to remove shadows behind windows and menus? [duplicate]

I tried turning the shadows off with CCSM, but it does not work ;/

System info:

Ubuntu 11.04 NN x64 desktop, HP ProBook 4520s, Unity

I think you have to choose a theme other than Ambiance or Radiance, because those override compiz's shadow settings.

If you really want to use the Ambiance borders without shadows:

1. Create a copy of Ambiance: cp -R /usr/share/themes/Ambiance ~/.themes
2. open ~/.themes/Ambiance/metacity-1/metacity-theme-1.xml and remove all of the <shadow> tags.
3. Open up appearance preferences and select your new, duplicate "Ambiance" theme.
4. Disable shadows in CCSM

Update 2015-01-21 In recent versions of Ubuntu you'll need to use Ubuntu Tweak Tool in step 3, since recent versions of the control center don't support custom themes.

• Install CompizConfig Settings Manager

  sudo apt-get install compizconfig-settings-manager

• Launch it by searching from the dash in Unity, or Preferences > CompizConfig Settings Manager in Ubuntu Classic.

• Navigate to the Window Decoration tab.

• Slide the Shadow Opacity to 0.