例如：sudo apt-get install gedit
返回此。
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:
gedit : Depends: gedit-common (>= 3.10) but it is not going to be installed
Depends: gedit-common (< 3.11) but it is not going to be installed
libqt4-declarative : Depends: libqtcore4 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4.9 is to
be installed
libqt4-network : Depends: libqtcore4 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4.9 is to
be installed
libqt4-script : Depends: libqtcore4 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4.9 is to
be installed
libqt4-scripttools:i386 : Depends: libqt4-script:i386 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but it is not going to be
installed
Depends: libqtcore4:i386 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4 is to be
installed
Depends: libqtgui4:i386 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but it is not going to be
installed
Depends: libstdc++6:i386 (>= 4.1.1) but it is not going to be installed
libqt4-sql : Depends: libqtcore4 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4.9 is to
be installed
libqt4-sql-mysql : Depends: libqtcore4 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4.9 is to
be installed
libqt4-xml : Depends: libqtcore4 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4.9 is to
be installed
libqt4-xmlpatterns : Depends: libqtcore4 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4.9 is to
be installed
libqt4-xmlpatterns:i386 : Depends: libqt4-network:i386 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but it is not going to be
installed
Depends: libqtcore4:i386 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4 is to be
installed
Depends: libstdc++6:i386 (>= 4.1.1) but it is not going to be installed
libqtcore4 : Breaks: libqtcore4:i386 (!= 4:4.8.1-0ubuntu4.9) but 4:4.8.1-0ubuntu4 is to be installed
libqtcore4:i386 : Depends: libglib2.0-0:i386 (>= 2.22.0) but it is not going to be installed
Depends: libstdc++6:i386 (>= 4.6) but it is not going to be installed
Breaks: libqtcore4 (!= 4:4.8.1-0ubuntu4) but 4:4.8.1-0ubuntu4.9 is to be installed
libqtdbus4 : Depends: libqtcore4 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4.9 is to
be installed
libqtgui4 : Depends: libqtcore4 (= 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1) but 4:4.8.1-0ubuntu4.9 is to
be installed
qtcore4-l10n : Breaks: libqtcore4 (< 4:4.8.5+dfsg-1~) but 4:4.8.1-0ubuntu4.9 is to be installed
Breaks: libqtcore4:i386 (< 4:4.8.5+dfsg-1~) but 4:4.8.1-0ubuntu4 is to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
我尝试过“apt-get -f install”、“apt-get update”、“apt-get upgrade”、“apt-get dist-update”等。这似乎是“libqtcore4”的问题。我尝试过使用 dpkg 和 .deb 文件来安装它。我清空了所有可能的缓存，并尝试从软件中心安装它。请帮忙，我想再次使用 apt-get。提前谢谢！
这是 apt-cache 策略：
$ apt-cache policy libqtcore4
libqtcore4:
Installed: 4:4.8.1-0ubuntu4.9
Candidate: 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1
Version table:
4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6.1 0
500 http://se.archive.ubuntu.com/ubuntu/ vivid-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ vivid-security/main amd64 Packages
4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu6 0
500 http://se.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages
*** 4:4.8.1-0ubuntu4.9 0
100 /var/lib/dpkg/status
答案1
您没有使用最新的可用版本libqtcore4。上面损坏的每个软件包都依赖于 Vivid 存储库中存在的更新版本，这就是为什么有这么多东西损坏的原因。
要么使用 Ubuntu 存储库中的库，要么不要使用任何依赖它的库。没有理由使用较旧的库，因为当所有内容都依赖于 4.8.6 而不是 4.8.1 时，它会破坏 QT Core