只是好奇 - 执行 apt-get update 然后升级后反复收到消息告诉我在我的桌面计算机上安装 ubuntu 基础，这正常吗？
阅读有关 ubuntu 基础是什么的内容让我想知道为什么在操作系统上需要它？
我没有点击“立即安装”，但通常会先执行 apt-get update，然后进行升级。现在，我只需执行 apt-get update，就会看到：
Hit:1 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:2 http://ppa.launchpad.net/nm-l2tp/network-manager-l2tp/ubuntu focal InRelease
Hit:3 http://us.archive.ubuntu.com/ubuntu focal InRelease
Hit:4 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease
Get:5 https://repo.skype.com/deb stable InRelease [4,501 B]
Hit:6 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease
Hit:7 http://ppa.launchpad.net/ondrej/apache2/ubuntu focal InRelease
Hit:8 http://ppa.launchpad.net/ondrej/php/ubuntu focal InRelease
Err:5 https://repo.skype.com/deb stable InRelease
The following signatures were invalid: EXPKEYSIG 1F3045A5DF7587C3 Skype Linux Client Repository <[email protected]>
Hit:9 http://ppa.launchpad.net/openshot.developers/ppa/ubuntu focal InRelease
Hit:10 http://ppa.launchpad.net/stebbins/handbrake-releases/ubuntu focal InRelease
Hit:11 http://ppa.launchpad.net/ubuntuhandbook1/audacity/ubuntu focal InRelease
Hit:12 http://dl.google.com/linux/chrome/deb stable InRelease
Ign:13 http://dl.google.com/linux/earth/deb stable InRelease
Hit:14 http://dl.google.com/linux/earth/deb stable Release
Reading package lists... Done
W: GPG error: https://repo.skype.com/deb stable InRelease: The following signatures were invalid: EXPKEYSIG 1F3045A5DF7587C3 Skype Linux Client Repository <[email protected]>
E: The repository 'https://repo.skype.com/deb stable InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
答案1
对我来说，解决这个问题的唯一办法就是彻底删除 Skype。现在我又遇到了一个与 Skype 存储库有关的问题，但由于它与这篇文章无关，所以我就让它解决了。