当我尝试安装 aptitude 时，出现以下信息：
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
aptitude : Depends: aptitude-common (= 0.7.4-2ubuntu2) but it is not going to be installed
Depends: libcwidget3v5 but it is not going to be installed
google-chrome-stable : Depends: libappindicator1 but it is not going to be installed
virtualbox-5.0 : Depends: libqt4-opengl (>= 4:4.7.2) but it is not going to be installed
Depends: libqtcore4 (>= 4:4.8.0) but it is not going to be installed
Depends: libqtgui4 (>= 4:4.8.0) but it is not going to be installed
Recommends: libsdl-ttf2.0-0 but it is not going to be installed
Recommends: dkms but it is not going to be installed
vivaldi-stable : Depends: libappindicator1 but it is not going to be installed
Recommends: pepperflashplugin-nonfree but it is not going to be installed
Recommends: chromium-codecs-ffmpeg-extra but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
答案1
apt-get -f install 解决了这个问题，应该可以正确读取它。