Here's an ebuild for the latest version of Metacity, works fine with these useflags here: xinerama -debug Sidenote: Metacity versions >= 2.13 replicate a feature that many popular window managers like xfce4 or KDE have: The Action "Maximize vertically/horizontally" resizes the window to its original size when being used twice.
Created attachment 77527 [details] New ebuild for x11-wm/metacity
unstable version, we do not put unstable versions into portage unless its part of a beta or rc candidate. ( which is coming shortly for 2.14 )