I can trigger this like the OP with Java. After the most recent patch (a few days ago) it happens always and the old fix won't work:
hardhat:~> gtk-window-decorator Xlib: extension "RANDR" missing on display ":0.0". gtk-window-decorator: Screen 0 on display ":0.0" already has a decoration manager; try using the --replace option to replace the current decoration manager. hardhat:~> gtk-window-decorator --replace Xlib: extension "RANDR" missing on display ":0.0". (hang) -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/727143 Title: unity-window-decorator crashes with SIGSEGV when closing Java windows To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/727143/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : [email protected] Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp

