答案1
apt-get update && sudo apt-get dist-upgrade
在终端中运行 sudo
注意:“dist-upgrade”不会将系统升级到新版本的 Ubuntu。
有关详细信息,请参阅 man apt-get
分布式升级
dist-upgrade in addition to performing the function of upgrade,
also intelligently handles changing dependencies with new versions
of packages; apt-get has a "smart" conflict resolution system, and
it will attempt to upgrade the most important packages at the
expense of less important ones if necessary. The dist-upgrade
command may therefore remove some packages. The
/etc/apt/sources.list file contains a list of locations from which
to retrieve desired package files. See also apt_preferences(5) for
a mechanism for overriding the general settings for individual
packages.
答案2
这可能是因为您在软件源中添加了一些新的存储库。我遇到了同样的问题,但我删除了一些存储库(如 libreoffice4-2),现在没有部分升级提供给我!