私は適切なインターネット アクセスを持っており、現在の IP (英国) もそうです82.47.29.14が、私のラップトップはまだドイツのサーバーにリンクされています91.189.91.24 80。
しかし、今はそれができませんdo-release-upgrade。
alvas@ubi:~$ sudo do-release-upgrade -d
Checking for a new Ubuntu release
Err Upgrade tool signature
404 Not Found [IP: 91.189.91.24 80]
Err Upgrade tool
404 Not Found [IP: 91.189.91.24 80]
Fetched 0 B in 0s (0 B/s)
WARNING:root:file 'utopic.tar.gz.gpg' missing
Failed to fetch
Fetching the upgrade failed. There may be a network problem.
alvas@ubi:~$ sudo do-release-upgrade -d
Checking for a new Ubuntu release
Err Upgrade tool signature
404 Not Found [IP: 91.189.91.23 80]
Err Upgrade tool
404 Not Found [IP: 91.189.91.23 80]
Fetched 0 B in 0s (0 B/s)
WARNING:root:file 'utopic.tar.gz.gpg' missing
Failed to fetch
Fetching the upgrade failed. There may be a network problem.
この問題をどのように解決すればいいでしょうかdo-release-upgrade?