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Based on the description, you are not using xorg, so I assume you are running wayland. If that is the case, this is likely a duplicate of bug 1713313. Unfortunately it is a known issue that several applications requiring root permissions fail on Wayland. However, the title seems to indicate that it fails because multiple screens are connected. If the program works as expected when only a single screen is attached, then it sounds like a separate issue. When reporting bugs in the future please use apport by using 'ubuntu- bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs. ** Tags added: artful ** Changed in: gparted (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1747211 Title: gparted won't display with multiple screens available To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gparted/+bug/1747211/+subscriptions -- ubuntu-bugs mailing list email@example.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs