针对 'focal.tar.gz.gpg' 验证 'focal.tar.gz' 失败

Question

当尝试执行 do-release-upgrade 从 Ubuntu 18.04 升级到 20.04 时，出现以下错误

Checking for a new Ubuntu release
Get:1 Upgrade tool signature [1,554 B]                                                                                                 
Get:2 Upgrade tool [1,342 kB]                                                                                                          
Fetched 1,343 kB in 0s (0 B/s)                                                                                                         
authenticate 'focal.tar.gz' against 'focal.tar.gz.gpg' 
Authentication failed
Authenticating the upgrade failed. 
There may be a problem with the network or with the server.

仅供参考：我已经尝试过 sudo apt-get install --reinstall ubuntu-keyring。

Answer 1

现在我可以在 /etc/apt/sources.list

中替换以下内容后升级到 ubuntu 20

deb http://in.archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse

deb http://in.archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse

deb http://in.archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse

deb http://in.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
deb-src http://in.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse

deb http://archive.canonical.com/ubuntu focal partner
deb-src http://archive.canonical.com/ubuntu focal partner

针对 'focal.tar.gz.gpg' 验证 'focal.tar.gz' 失败

Authenticating 'focal.tar.gz' against 'focal.tar.gz.gpg' fails

ubuntu-18.04

ubuntu-20.04