Obrigado pela atenção. Segue abaixo as respostas aos comandos:
Resposta ao ls /etc/apt/sources.list.d/
google-chrome.list
google-chrome.list.save
qbittorrent-team-ubuntu-qbittorrent-stable-bionic.list
qbittorrent-team-ubuntu-qbittorrent-stable-bionic.list.save
qbittorrent-team-ubuntu-qbittorrent-unstable-bionic.list
qbittorrent-team-ubuntu-qbittorrent-unstable-bionic.list.save
Resposta ao cat /etc/apt/sources.list
# deb cdrom:[Ubuntu 18.04.1 LTS _Bionic Beaver_ - Release amd64 (20180725)]/ bionic main restricted
# See
http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb
http://br.archive.ubuntu.com/ubuntu/ bionic main restricted
# deb-src
http://br.archive.ubuntu.com/ubuntu/ bionic main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb
http://br.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
# deb-src
http://br.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb
http://br.archive.ubuntu.com/ubuntu/ bionic universe
# deb-src
http://br.archive.ubuntu.com/ubuntu/ bionic universe
deb
http://br.archive.ubuntu.com/ubuntu/ bionic-updates universe
# deb-src
http://br.archive.ubuntu.com/ubuntu/ bionic-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb
http://br.archive.ubuntu.com/ubuntu/ bionic multiverse
# deb-src
http://br.archive.ubuntu.com/ubuntu/ bionic multiverse
deb
http://br.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
# deb-src
http://br.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb
http://br.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
# deb-src
http://br.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb
http://archive.canonical.com/ubuntu bionic partner
# deb-src
http://archive.canonical.com/ubuntu bionic partner
deb
http://security.ubuntu.com/ubuntu bionic-security main restricted
# deb-src
http://security.ubuntu.com/ubuntu bionic-security main restricted
deb
http://security.ubuntu.com/ubuntu bionic-security universe
# deb-src
http://security.ubuntu.com/ubuntu bionic-security universe
deb
http://security.ubuntu.com/ubuntu bionic-security multiverse
# deb-src
http://security.ubuntu.com/ubuntu bionic-security multiverse
Resposta ao dpkg --get-selections | grep -i libqt5*
libqt5core5a:amd64 install
libqt5dbus5:amd64 install
libqt5gui5:amd64 install
libqt5network5:amd64 install
libqt5qml5:amd64 install
libqt5svg5:amd64 install
libqt5widgets5:amd64 install
libqt5xml5:amd64 install
Resposta ao ls /usr/lib/x86_64-linux-gnu/libQt5*
/usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so.5
/usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so.5.9
/usr/lib/x86_64-linux-gnu/libQt5EglFSDeviceIntegration.so.5.9.5
/usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so.5
/usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so.5.9
/usr/lib/x86_64-linux-gnu/libQt5EglFsKmsSupport.so.5.9.5
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.9
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.9.5
/usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
/usr/lib/x86_64-linux-gnu/libQt5Qml.so.5.9
/usr/lib/x86_64-linux-gnu/libQt5Qml.so.5.9.5
/usr/lib/x86_64-linux-gnu/libQt5Svg.so.5
/usr/lib/x86_64-linux-gnu/libQt5Svg.so.5.9
/usr/lib/x86_64-linux-gnu/libQt5Svg.so.5.9.5
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.9
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.9.5
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.9
/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.9.5
/usr/lib/x86_64-linux-gnu/libQt5Xml.so.5
/usr/lib/x86_64-linux-gnu/libQt5Xml.so.5.9
/usr/lib/x86_64-linux-gnu/libQt5Xml.so.5.9.5
E finalmente o arquivo parece estar aqui:
/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5