Authenticating the upgrade failed
使用update-manager -d发现:
gpg: can't open `/etc/apt/trusted.gpg'
sudo chmod 644 /etc/apt/trusted.gpg
http://askubuntu.com/questions/138712/unable-to-upgrade-to-ubuntu-12-4-for-dell-vosto-v131
遇到Ubuntu 12.4升级失败的问题?通过修改权限解决信任文件问题,成功完成升级。
Authenticating the upgrade failed
使用update-manager -d发现:
gpg: can't open `/etc/apt/trusted.gpg'
sudo chmod 644 /etc/apt/trusted.gpg
http://askubuntu.com/questions/138712/unable-to-upgrade-to-ubuntu-12-4-for-dell-vosto-v131

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