我已经尝试了支持论坛其他地方发布的一些解决方案，其中一个似乎有效，但在 Steam 更新后，我发现自己又回到了第一阶段，我是一名新的 Linux 用户，并且已经处于学习曲线:) 感谢您的帮助
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:
libgl1-mesa-glx:i386 : Depends: libglapi-mesa:i386 (= 10.1.3-0ubuntu0.3)
unity-control-center : Depends: …我犯了一个可怕的错误并升级到 18.04，而没有通过执行以下操作在不同的分区中进行备份：
sudo apt update
sudo apt upgrade
sudo apt dist-upgrade
sudo apt-get autoremove
sudo apt install update-manager-core
sudo do-release-upgrade -d
然后我在重启后做了更新和升级命令。现在存在许多sudo apt-get -f install命令无法修复的未满足的依赖项和损坏的包问题。更新 sudo apt install -f 错误日志输出的第一部分是：
Reading package lists...
Building dependency tree...
Reading state information...
Correcting dependencies... failed.
The following packages have unmet dependencies:
gnome-calendar : Depends: gsettings-desktop-schemas (>= 3.21.2) but 3.18.1-1ubuntu1 is installed
gnome-session : Depends: gnome-shell (>= 3.25.91-0ubuntu4~) but it is not installed
Depends: gnome-session-bin (>= 3.28.1-0ubuntu2) but 3.18.1.2-1ubuntu1.16.04.2 is installed …