ubuntu - ros旋律未满足的依赖关系

Question

我正在尝试按照本页 http://wiki.ros.org/melodic/Installation/Ubuntu 中的说明在 ubuntu 18.04 上安装 ros melodic ,
当我使用这个命令 sudo apt install ros-melodic-desktop-full我收到以下消息

Reading package lists... Done
Building dependency tree       
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:
 ros-melodic-desktop-full : Depends: ros-melodic-desktop but it is not going to be installed
                            Depends: ros-melodic-perception but it is not going to be installed
                            Depends: ros-melodic-simulators but it is not going to be installed
                            Depends: ros-melodic-urdf-sim-tutorial but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

我试图安装 ros-melodic-desktop 但它不断给我依赖错误消息。
任何帮助，请。

Answer 1

sudo apt-get autoremove

如果这不起作用，那么只需重新安装 ubuntu。这是摆脱这些问题的更快方法。