Because this is one of top posts being shown in Google search for problems with qdbusviewer and they persist also on 18.04 here is the solution:
1. Find an error message. In my case (even after installing default): qdbusviewer: could not exec '/usr/lib/qt5/bin/qdbusviewer': No such file or directory 2. Find in which package is file being reported as missing: $ apt-file search /usr/lib/qt5/bin/qdbusviewer qttools5-dev-tools: /usr/lib/qt5/bin/qdbusviewer 3. Install found package: $ sudo apt install qttools5-dev-tools Voila! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1405711 Title: qttools5-dev-tools: qdbusviewer - No such file To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qttools-opensource-src/+bug/1405711/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs