After entering "apt-cache policy libqt5gui5 libqt5widgets5 virtualbox-qt smplayer":
" apt-cache policy libqt5gui5 libqt5widgets5 virtualbox-qt smplayer libqt5gui5: Zainstalowana: 5.9.5+dfsg-0ubuntu1 Kandydująca: 5.9.5+dfsg-0ubuntu1 Tabela wersji: *** 5.9.5+dfsg-0ubuntu1 500 500 http://pl.archive.ubuntu.com/ubuntu bionic/main amd64 Packages 100 /var/lib/dpkg/status libqt5widgets5: Zainstalowana: 5.9.5+dfsg-0ubuntu1 Kandydująca: 5.9.5+dfsg-0ubuntu1 Tabela wersji: *** 5.9.5+dfsg-0ubuntu1 500 500 http://pl.archive.ubuntu.com/ubuntu bionic/main amd64 Packages 100 /var/lib/dpkg/status virtualbox-qt: Zainstalowana: 5.2.10-dfsg-6ubuntu18.04.1 Kandydująca: 5.2.10-dfsg-6ubuntu18.04.1 Tabela wersji: *** 5.2.10-dfsg-6ubuntu18.04.1 500 500 http://pl.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages 100 /var/lib/dpkg/status 5.2.10-dfsg-6 500 500 http://pl.archive.ubuntu.com/ubuntu bionic/multiverse amd64 Packages smplayer: Zainstalowana: 18.2.2~ds0-1 Kandydująca: 18.2.2~ds0-1 Tabela wersji: *** 18.2.2~ds0-1 500 500 http://pl.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages 100 /var/lib/dpkg/status " Regards. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtbase-opensource-src in Ubuntu. https://bugs.launchpad.net/bugs/1791166 Title: Programs using the libqt5gui5 library do not start. Status in qtbase-opensource-src package in Ubuntu: Invalid Bug description: Programs using the libqt5gui5 library do not start. Running in the terminal displays the message: "VirtualBox: supR3HardenedMainGetTrustedMain: dlopen("/usr/lib/virtualbox/VirtualBox.so",) failed: libQt5Gui.so.5: cannot open shared object file: No such file or directory" or "smplayer: error while loading shared libraries: libQt5Widgets.so.5: cannot open shared object file: No such file or directory" My distribution is Ubuntu 18.04.1. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1791166/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp