A google of this error message shows that many others are affected by the same problem. There are workarounds you can try in your program. According to this bug there is a fix released for the Qt4-x11: https://bugs.launchpad.net/ubuntu/+source/qt4-x11/+bug/805303 However, you have installed QT from source (not installed the Ubuntu package), so you would need to investgate if applying the same patch in that bug to your locally installed copy fixes it.
** Changed in: ubuntu Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1090518 Title: GTK-integration for Qt is broken To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1090518/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs