Hi,
I am following the steps in this walk through:
Gazebo Simulation · PX4 Developer Guide
At “Prerequisites” I tried to install GStreamer 10.0 with this command
sudo apt-get install $(apt-cache --names-only search ^gstreamer1.0-* | awk '{ print $1 }' | grep -v gstreamer1.0-hybris) -y
and I get the following error
Reading package lists... Done
Building dependency tree
Reading state information... Done
gstreamer1.0-clutter-3.0 is already the newest version (3.0.26-1).
gstreamer1.0-fluendo-mp3 is already the newest version (0.10.32.debian-1).
gstreamer1.0-fluendo-mp3 set to manually installed.
gstreamer1.0-alsa is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-doc is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-gl is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-gtk3 is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-packagekit is already the newest version (1.1.9-1ubuntu2.18.04.5).
gstreamer1.0-plugins-base is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-plugins-base-apps is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-plugins-good is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-pulseaudio is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-tools is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-x is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-libav is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-plugins-bad is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-plugins-ugly is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-qt5 is already the newest version (1.14.5-0ubuntu1~18.04.1).
gstreamer1.0-vaapi is already the newest version (1.14.5-0ubuntu1~ubuntu18.04.1).
gstreamer1.0-vaapi set to manually installed.
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:
gstreamer1.0-python3-dbg-plugin-loader : Conflicts: gstreamer1.0-python3-plugin-loader but 1.14.5-0ubuntu1~18.04.1 is to be installed
gstreamer1.0-python3-plugin-loader : Conflicts: gstreamer1.0-python3-dbg-plugin-loader but 1.14.5-0ubuntu1~18.04.1 is to be installed
E: Unable to correct problems, you have held broken packages.
Edit: my searching found someone with the same error but with no solution: