我只是想使用安装 virtualbox
apt-get install virtualbox
并在我的 ubuntu 中显示：
The following packages have unmet dependencies:
perl-base : Breaks: debconf (< 1.5.61) but 1.5.58ubuntu1 is to be installed
Breaks: debconf:i386 (< 1.5.61)
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
为什么会发生这种情况以及我该如何解决？
来源列表：
# deb cdrom:[Ubuntu 16.04.3 LTS _Xenial Xerus_ - Release i386 (20170801)]/ xenial main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://in.archive.ubuntu.com/ubuntu/ xenial main restricted
# deb-src http://in.archive.ubuntu.com/ubuntu/ xenial main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://in.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
# deb-src http://in.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://in.archive.ubuntu.com/ubuntu/ xenial universe
# deb-src http://in.archive.ubuntu.com/ubuntu/ xenial universe
deb http://in.archive.ubuntu.com/ubuntu/ xenial-updates universe
# deb-src http://in.archive.ubuntu.com/ubuntu/ xenial-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://in.archive.ubuntu.com/ubuntu/ xenial multiverse
# deb-src http://in.archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://in.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
# deb-src http://in.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://in.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
# deb-src http://in.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu xenial partner
# deb-src http://archive.canonical.com/ubuntu xenial partner
deb http://security.ubuntu.com/ubuntu xenial-security main restricted
# deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted
deb http://security.ubuntu.com/ubuntu xenial-security universe
# deb-src http://security.ubuntu.com/ubuntu xenial-security universe
deb http://security.ubuntu.com/ubuntu xenial-security multiverse
# deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse
# Kali linux repositories | Added by Katoolin
deb http://http.kali.org/kali kali-rolling main contrib non-free**
答案1
您的源列表中有 Kali。如果我们查找 Xenial (16.04) 的 debconf，最新版本是 1.5.58ubuntu1在撰写本文时。您有一个较新的 debconf，可能来自 kali。
卡莉的软件包列表表示kali中debconf的最新版本是1.5.66。
您可能还perl-base从 kali 存储库中获得了perl-base列为中断的debconf<< 1.5.61。
问题是你有多个具有相互排斥依赖关系的存储库 - 这将要会产生问题。Kalis 存储库应该提供整个系统，而不是仅提供部分系统。
你可以看看这个答案讨论了如何从特定存储库中删除所有软件包，以便您可以从系统中删除所有 Kali 软件包，这应该使您能够安装 virtualbox。