As per discussion on the upstream bug, appears this issue is particular to a customized configuration, and the original issue is already solved in the upstream codebase (and included in latest ubuntu).
** Changed in: xkeyboard-config (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/465926 Title: sun type 6 keyboard not supported (bs key not working) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs