当我的互联网服务中断时，我正在从 12.04 升级到 14.04。升级中止。切换到另一个网络并尝试时sudo do-release-upgrade -d，我收到以下输出和错误：
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [198 B]
Get:2 Upgrade tool [1,148 kB]
Fetched 1,148 kB in 0s (0 B/s)
authenticate 'trusty.tar.gz' against 'trusty.tar.gz.gpg'
exception from gpg: GnuPG exited non-zero, with code 1
Debug information:
gpg: Signature made Sat 12 Apr 2014 11:55:14 PM EAT using DSA key ID ********
gpg: /tmp/update-manager-QyUNc1/trustdb.gpg: trustdb created
gpg: BAD signature from "Ubuntu Archive Automatic Signing Key <[email protected]>"
Authentication failed
Authenticating the upgrade failed. There may be a problem with the network or with the server.
是什么原因造成的？我该如何解决？
答案1
解决方案是切换回原始网络。尝试该命令后，升级将恢复。也许关键在于网络/IP 特定。