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imkzh
Asked: 2019-03-18 17:55:49 +0800 CST

如何回滚到 16.04 上的旧内核/清除内核会自动安装新内核？

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unattended-upgrade最近自动将我的内核升级到 4.4.0-143，但它不适用于 Nvidia 显卡，所以我决定回滚到以前的版本。

我能够启动到较旧的内核（4.4.0-141），并确认我正在启动我的计算机：

4.4.0-141-generic

但是当我尝试时apt purge linux-image-4.4.0-143-generic，apt 提示我确认：

The following NEW packages will be installed:
  linux-image-unsigned-4.4.0-143-generic

那么为什么卸载一个签名的内核需要安装一个未签名的版本呢？我怎样才能安全地删除较新的（143）内核？提前致谢！

apt purge 的完整输出：

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  amd64-microcode intel-microcode iucode-tool linux-headers-4.4.0-137 linux-headers-4.4.0-137-generic linux-headers-4.4.0-138 linux-headers-4.4.0-138-generic linux-headers-4.4.0-139 linux-headers-4.4.0-139-generic linux-headers-4.4.0-141 linux-headers-4.4.0-141-generic
  linux-image-4.4.0-137-generic linux-image-4.4.0-138-generic linux-image-4.4.0-139-generic linux-image-4.4.0-141-generic linux-image-extra-4.4.0-137-generic linux-image-extra-4.4.0-138-generic linux-image-extra-4.4.0-139-generic linux-image-extra-4.4.0-141-generic
  linux-signed-image-4.4.0-137-generic linux-signed-image-4.4.0-138-generic linux-signed-image-4.4.0-139-generic linux-signed-image-4.4.0-141-generic thermald
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  linux-image-unsigned-4.4.0-143-generic
Suggested packages:
  fdutils linux-doc-4.4.0 | linux-source-4.4.0 linux-tools
The following packages will be REMOVED:
  linux-generic* linux-image-4.4.0-143-generic* linux-image-generic* linux-signed-generic*
The following NEW packages will be installed:
  linux-image-unsigned-4.4.0-143-generic
0 upgraded, 1 newly installed, 4 to remove and 140 not upgraded.
Need to get 7,049 kB of archives.
After this operation, 386 kB of additional disk space will be used.
Do you want to continue? [Y/n] n
kernel apt downgrade 16.04 purge

1 个回答

  1. Best Answer

    我自己通过@mikewhatever 的已删除答案的提示找到了答案。（见他的评论，https://askubuntu.com/users/20054/mikewhatever）

    原因是某些包取决于linux-image-4.4.0-143-genericor 或linux-image-unsigned-4.4.0-143-generic. 因此，简单地清除signed内核将触发一个自动安装unsigned以满足依赖关系。

    所以我检查了反向依赖linux-image-4.4.0-143-generic

    # apt-cache rdepends linux-image-4.4.0-143-generic
linux-image-4.4.0-143-generic
Reverse Depends:
 |linux-image-generic
 |linux-modules-extra-4.4.0-143-generic
 |linux-image-virtual
  linux-image-unsigned-4.4.0-143-generic

    并清除了所有报告的内容。然后我就可以linux-image-4.4.0-143-generic无痛地清洗了。

    请参阅：apt-get -- remove 触发软件包安装？

    • 0

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