软件和更新未显示。从航站楼->
kristina@kristina-desktop:~$ sudo apt install update-manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package update-manager is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'update-manager' has no installation candidate我想先升级到Ubuntu 20,然后是22
发布于 2022-06-03 16:18:12
我花了3个小时就能解决问题,我下载了Bionic.zip并将/apt从它复制到了/etc。我什么都能做。经过长期的斗争,我的问题就这样解决了。
https://askubuntu.com/questions/1412139
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