【已解决】There is no development version of an LTS available.

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#linux #ubuntu

于 2020-04-23 08:41:11 首次发布

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本文介绍如何从Ubuntu的长期支持(LTS)版本，如Ubuntu 20.04 LTS，升级到非LTS的最新版本。通过修改/etc/update-manager/release-upgrades文件中的Prompt参数，可以实现这一目标。默认情况下，Prompt=lts，这意味着系统只会检查并升级到最新的LTS版本。要升级到非LTS的最新版本，需要将Prompt参数更改为normal。

解决方法

frank@LAPTOP-0OCJTGJR:~$ do-release-upgrade
Checking for a new Ubuntu release
There is no development version of an LTS available.
To upgrade to the latest non-LTS develoment release
set Prompt=normal in /etc/update-manager/release-upgrades.

打开文件sudo vi /etc/update-manager/release-upgrades

# Default behavior for the release upgrader.

[DEFAULT]
# Default prompting behavior, valid options:
#
#  never  - Never check for, or allow upgrading to, 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 supported 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 if this option is used and
#           the currently-running release is not itself an LTS release the
#           upgrader will assume prompt was meant to be normal.
#Prompt=lts
Prompt=normal

默认设置时Prompt=lts，将其改为Prompt=normal.，重新执行命令do-release-upgrade。