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将 ubuntu 19.04 更新至 20.04 时出错？

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将 ubuntu 19.04 更新至 20.04 时出错？

我正在尝试将 ubuntu 19.04 升级到 20.20，但出现如下错误：

update-manager     
Checking for a new Ubuntu release
Your Ubuntu release is not supported anymore.
For upgrade information, please visit:
http://www.ubuntu.com/releaseendoflife

Checking for a new Ubuntu release
Your Ubuntu release is not supported anymore.
For upgrade information, please visit:
http://www.ubuntu.com/releaseendoflife

/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeFetcher.py:23: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk, Gdk
/usr/lib/python3/dist-packages/DistUpgrade/ReleaseNotesViewerWebkit.py:33: PyGIWarning: WebKit2 was imported without specifying a version first. Use gi.require_version('WebKit2', '4.0') before import to ensure that the right version gets loaded.
  from gi.repository import WebKit2 as WebKit
authenticate 'focal.tar.gz' against 'focal.tar.gz.gpg' 
extracting 'focal.tar.gz'

答案1

这不是一个错误。

这是错过发布升级窗口时的预期行为。发布升级已经晚了几个月。

  • 您剩下的支持版本升级方法是备份您的数据并全新安装支持的 Ubuntu 版本。

  • 您可以尝试几种不受支持的方法...但如果您遇到问题，我们将不会提供有用的帮助。它们不受支持。

  • 考虑在日历上做个标记，以免错过为期三个月的发布升级窗口（10 月至 1 月和 4 月至 7 月）。或者考虑迁移到 LTS，这样每两年进行一次发布升级。

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