Hit:1 http://archive.ubuntu.com/ubuntu lunar InRelease
Ign:2 https://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu lunar InRelease
Hit:3 http://archive.ubuntu.com/ubuntu lunar-updates InRelease
Hit:4 http://archive.ubuntu.com/ubuntu lunar-backports InRelease
Hit:5 https://ppa.launchpadcontent.net/kisak/turtle/ubuntu lunar InRelease
Hit:6 http://archive.ubuntu.com/ubuntu lunar-security InRelease
Ign:2 https://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu lunar InRelease
Ign:2 https://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu lunar InRelease
Err:2 https://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu lunar InRelease
Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected. Could not handshake: Error in the certificate verification. [IP: some ip lol]
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
W: Failed to fetch https://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu/dists/lunar/InRelease Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected. Could not handshake: Error in the certificate verification. [IP: some ip lol]
W: Some index files failed to download. They have been ignored, or old ones used instead.
这是我得到的错误（没有显示我的ip）但你可以看到，我尝试了从youtube到reddit到github的所有方法，但都不起作用，我尝试解决这个问题天数和小时数但它似乎不起作用，在尝试修复问题之前，它显示了一些红色的“E”
感谢您的帮助/支持
答案1
显然你从非官方档案库中安装了一些软件包（ppa，请参阅：https://itsfoss.com/ppa-guide/)。阅读该页面并尝试了解哪些地方不起作用。在您确定自己在做什么之后，尝试禁用阻止您的 ppa。我强烈建议您在执行任何其他操作（例如，使用 Dejadup）之前保存（备份）所有用户数据。如果遇到问题，请重新安装并从备份中恢复。