Reproduced on Kubuntu 13.04 alpha2. Running kdesudo, sudo, or becoming root other way, then setting DISPLAY to :0 won't allow to start X applications as a root until xhost +local:root command is issued.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/370607 Title: X applications won't run under sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/370607/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs