These keys are taken by the wall plugin. You have to disable the keyboard shortcuts in there before your custom ones will work.
** Changed in: compiz (Ubuntu) Status: New => Invalid -- page_up and page_down keys https://bugs.launchpad.net/bugs/189430 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs