- 确保安装 update-manager-core这个包 如果没有安装执行以下命令
sudo apt install update-manager-core
2.确保/etc/update-manager/release-upgrades这个文件的Prompt被设置为normar
此文件有三个可选项，nerver标识永不更新，normal表示正式版、lts表示只选择长期支持版本
# Default behavior for the release upgrader. [DEFAULT] # Default prompting behavior,valid options: # # never - Never check for a new release. # normal - Check to see if a new release is available. If more than one new # release is found,the release upgrader will attempt to upgrade to # the release that immediately succeeds the currently-running # release. # lts - Check to see if a new LTS release is available. The upgrader # will attempt to upgrade to the first LTS release available after # the currently-running one. Note that this option should not be # used if the currently-running release is not itself an LTS # release,since in that case the upgrader won't be able to # determine if a newer release is available. Prompt=normal
3.执行
sudo do-release-upgrade
ok,跟着命令走就好了
