I've been attempting to install ROS noetic on a freshly installed Ubuntu 20.04.
I started with setting up the sources list, then setting up the keys, and running sudo apt update, following this guide: http://wiki.ros.org/noetic/Installation/Ubuntu
However, we did miss the initial step of allowing restricted, universe and multiverse repos.
Afer, we ran sudo apt install ros-noetic-desktop-full unsuccessfully, and received the following output:
luca@luca-Z370P-D3:~$ sudo apt install ros-noetic-desktop-full
[sudo] password for luca:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies.
gazebo11 : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libboost-iostreams1.71.0 but it is not installable
Depends: libboost-program-options1.71.0 but it is not installable
Depends: libboost-regex1.71.0-icu66 but it is not installable
Depends: libboost-thread1.71.0 but it is not installable
Depends: libgazebo11 (= 11.10.2-1~focal) but 11.10.2+dfsg-1 is to be installed
Depends: libignition-msgs5 (>= 5.9.0) but it is not going to be installed
Depends: libignition-transport8 (>= 8.2.1) but it is not going to be installed
Depends: libprotobuf17 but it is not installable
Depends: gazebo11-common (>= 11.2.0) but it is not going to be installed
Recommends: gazebo11-plugin-base but it is not going to be installed
libgazebo11-dev : Depends: libignition-transport8-dev but it is not going to be installed
Depends: libignition-msgs5-dev but it is not going to be installed
Depends: libignition-fuel-tools4-dev but it is not going to be installed
Depends: libignition-common3-profiler-dev but it is not going to be installed
Depends: libdart6-collision-bullet-dev (< 6.10.0) but it is not installable or
libdart-collision-bullet-dev (< 6.10.0) but it is not going to be installed
Depends: libdart6-collision-ode-dev (< 6.10.0) but it is not installable or
libdart-collision-ode-dev (< 6.10.0) but it is not going to be installed
Depends: libdart6-utils-urdf-dev (< 6.10.0) but it is not installable or
libdart-utils-urdf-dev (< 6.10.0) but it is not going to be installed
Depends: libdart6-external-odelcpsolver-dev (< 6.10.0) but it is not installable or
libdart-external-odelcpsolver-dev (< 6.10.0) but it is not going to be installed
Depends: libdart6-external-ikfast-dev (< 6.10.0) but it is not installable or
libdart-external-ikfast-dev (< 6.10.0) but it is not going to be installed
Depends: libgazebo11 (= 11.10.2-1~focal) but 11.10.2+dfsg-1 is to be installed
Depends: gazebo11-common (>= 11.2.0) but it is not going to be installed
Depends: gazebo11-plugin-base (= 11.10.2-1~focal) but it is not going to be installed
ros-noetic-actionlib : Depends: libboost-thread1.71.0 but it is not installable
ros-noetic-actionlib-tutorials : Depends: libboost-thread1.71.0 but it is not installable
ros-noetic-bondcpp : Depends: libboost-thread1.71.0 but it is not installable
ros-noetic-camera-calibration-parsers : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libboost-python1.71.0 but it is not installable
Depends: libboost-python1.71.0-py38 but it is not installable
Depends: libpython3.8 (>= 3.8.2) but it is not installable
Depends: libyaml-cpp0.6 (>= 0.6.2) but it is not installable
ros-noetic-class-loader : Depends: libconsole-bridge0.4 but it is not installable
Depends: libpocofoundation62 (>= 1.9.2) but it is not installable
ros-noetic-compressed-depth-image-transport : Depends: libconsole-bridge0.4 but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgcodecs4.2 (>= 4.2.0+dfsg) but it is not installable
ros-noetic-compressed-image-transport : Depends: libconsole-bridge0.4 but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgcodecs4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable
ros-noetic-controller-manager : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
ros-noetic-cpp-common : Depends: libconsole-bridge0.4 but it is not installable
ros-noetic-cv-bridge : Depends: libboost-python1.71.0 but it is not installable
Depends: libboost-python1.71.0-py38 but it is not installable
Depends: libboost-regex1.71.0-icu66 but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgcodecs4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libpython3.8 (>= 3.8.2) but it is not installable
ros-noetic-depth-image-proc : Depends: libconsole-bridge0.4 but it is not installable
Depends: libopencv-calib3d4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable
ros-noetic-diagnostic-aggregator : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libboost-regex1.71.0-icu66 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
ros-noetic-diagnostic-common-diagnostics : Depends: hddtemp but it is not installable
ros-noetic-diff-drive-controller : Depends: libconsole-bridge0.4 but it is not installable
Depends: liburdfdom-model but it is not installable
ros-noetic-eigen-conversions : Depends: liborocos-kdl1.4 but it is not installable
ros-noetic-filters : Depends: libconsole-bridge0.4 but it is not installable
ros-noetic-gazebo-plugins : Depends: libboost-thread1.71.0 but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libprotobuf17 but it is not installable
ros-noetic-gazebo-ros : Depends: libboost-thread1.71.0 but it is not installable
Depends: libprotobuf17 but it is not installable
ros-noetic-gazebo-ros-control : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libboost-thread1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
Depends: ros-noetic-transmission-interface but it is not going to be installed
ros-noetic-image-geometry : Depends: libopencv-calib3d4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable
ros-noetic-image-proc : Depends: libconsole-bridge0.4 but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable
ros-noetic-image-publisher : Depends: libconsole-bridge0.4 but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgcodecs4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-videoio4.2 (>= 4.2.0+dfsg) but it is not installable
ros-noetic-image-rotate : Depends: libconsole-bridge0.4 but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable
ros-noetic-image-transport : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
ros-noetic-image-view : Depends: libboost-thread1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-highgui4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgcodecs4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-videoio4.2 (>= 4.2.0+dfsg) but it is not installable
ros-noetic-interactive-markers : Depends: libboost-thread1.71.0 but it is not installable
ros-noetic-joint-state-controller : Depends: libconsole-bridge0.4 but it is not installable
ros-noetic-kdl-conversions : Depends: liborocos-kdl1.4 but it is not installable
ros-noetic-kdl-parser : Depends: liborocos-kdl1.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
Depends: liburdfdom-model but it is not installable
ros-noetic-laser-assembler : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
ros-noetic-laser-filters : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
ros-noetic-nodelet : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libboost-thread1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
ros-noetic-nodelet-tutorial-math : Depends: libconsole-bridge0.4 but it is not installable
ros-noetic-pcl-ros : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libpcl-common1.10 (>= 1.10.0+dfsg) but it is not installable
Depends: libpcl-features1.10 (>= 1.10.0+dfsg) but it is not installable
Depends: libpcl-filters1.10 (>= 1.10.0+dfsg) but it is not installable
Depends: libpcl-io1.10 (>= 1.10.0+dfsg) but it is not installable
Depends: libpcl-search1.10 (>= 1.10.0+dfsg) but it is not installable
Depends: libpcl-segmentation1.10 (>= 1.10.0+dfsg) but it is not installable
Depends: libpcl-surface1.10 (>= 1.10.0+dfsg) but it is not installable
ros-noetic-pluginlib-tutorials : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
ros-noetic-position-controllers : Depends: libconsole-bridge0.4 but it is not installable
ros-noetic-robot-state-publisher : Depends: liborocos-kdl1.4 but it is not installable
Depends: liburdfdom-world but it is not installable
ros-noetic-rosbag : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libboost-program-options1.71.0 but it is not installable
Depends: libboost-regex1.71.0-icu66 but it is not installable
Depends: libboost-thread1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: ros-noetic-rosbag-storage but it is not going to be installed
ros-noetic-rosconsole : Depends: libboost-regex1.71.0-icu66 but it is not installable
Depends: liblog4cxx10v5 (>= 0.10.0) but it is not installable
ros-noetic-rosconsole-bridge : Depends: libconsole-bridge0.4 but it is not installable
ros-noetic-roscpp : Depends: libboost-chrono1.71.0 but it is not installable
Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libboost-thread1.71.0 but it is not installable
ros-noetic-roscpp-tutorials : Depends: libboost-thread1.71.0 but it is not installable
ros-noetic-rospack : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libboost-program-options1.71.0 but it is not installable
Depends: libpython3.8 (>= 3.8.2) but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
ros-noetic-rqt-image-view : Depends: libconsole-bridge0.4 but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: ros-noetic-rqt-gui-cpp but it is not going to be installed
ros-noetic-rqt-rviz : Depends: libboost-program-options1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: ros-noetic-rqt-gui-cpp but it is not going to be installed
ros-noetic-rviz : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libboost-program-options1.71.0 but it is not installable
Depends: libboost-thread1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
Depends: liburdfdom-world but it is not installable
Depends: libyaml-cpp0.6 (>= 0.6.2) but it is not installable
ros-noetic-rviz-plugin-tutorials : Depends: libboost-thread1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
ros-noetic-stage-ros : Depends: libboost-thread1.71.0 but it is not installable
ros-noetic-stereo-image-proc : Depends: libconsole-bridge0.4 but it is not installable
Depends: libopencv-calib3d4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable
ros-noetic-tf : Depends: libboost-thread1.71.0 but it is not installable
ros-noetic-tf-conversions : Depends: liborocos-kdl1.4 but it is not installable
ros-noetic-tf2 : Depends: libconsole-bridge0.4 but it is not installable
ros-noetic-tf2-ros : Depends: libboost-thread1.71.0 but it is not installable
Depends: ros-noetic-tf2-py but it is not going to be installed
ros-noetic-theora-image-transport : Depends: libconsole-bridge0.4 but it is not installable
Depends: libopencv-core4.2 (>= 4.2.0+dfsg) but it is not installable
Depends: libopencv-imgproc4.2 (>= 4.2.0+dfsg) but it is not installable
ros-noetic-turtle-actionlib : Depends: libboost-thread1.71.0 but it is not installable
ros-noetic-urdf : Depends: libboost-filesystem1.71.0 but it is not installable
Depends: libconsole-bridge0.4 but it is not installable
Depends: libtinyxml2-6a (>= 5.0.0) but it is not installable
Depends: liburdfdom-model but it is not installable
W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target Packages (main/binary-i386/Packages) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target Translations (main/i18n/Translation-en_GB) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target DEP-11-icons-small (main/dep11/icons-48x48.tar) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target DEP-11-icons-hidpi (main/dep11/icons-64x64@2.tar) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target CNF (main/cnf/Commands-amd64) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
W: Target CNF (main/cnf/Commands-all) is configured multiple times in /etc/apt/sources.list.d/ros-focal.list:1 and /etc/apt/sources.list.d/ros.list:1
E: Unable to correct problems, you have held broken packages.
After recieving this error, we allowed universe, multiverse and restricted repos, ran sudo apt update and still had the same results. We're not sure of anymore potential fixes,
Thank you for your time.
