为什么APT建议在Trusty上从4.4.0升级内核3.13？

APT让我不时感到震惊。两周前，我进行了apt update跟踪，apt upgrade即使我使用的是4.4，也获得了3.13内核。我忽略了这一点。一周后，我重新运行了更新和升级，建议不要升级。今天，3.13的建议又回来了。这是怎么回事，如何防止建议使用这些复古内核？

lsb_release -d
Description:    Ubuntu 14.04.5 LTS

uname -a
Linux cahl 4.4.0-78-generic #99~14.04.2-Ubuntu SMP Thu Apr 27 18:49:46 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

sudo apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages were automatically installed and are no longer required:
  flow-tools libdbi1 librrd4 linux-headers-3.13.0-112
  linux-headers-3.13.0-112-generic linux-headers-3.13.0-119
  linux-headers-3.13.0-119-generic linux-headers-3.13.0-121
  linux-headers-3.13.0-121-generic linux-headers-3.13.0-123
  linux-headers-3.13.0-123-generic linux-headers-3.13.0-125
  linux-headers-3.13.0-125-generic linux-headers-4.4.0-79
  linux-headers-4.4.0-79-generic linux-headers-4.4.0-81
  linux-headers-4.4.0-81-generic linux-headers-4.4.0-83
  linux-headers-4.4.0-83-generic linux-headers-4.4.0-87
  linux-headers-4.4.0-87-generic linux-image-3.13.0-112-generic
  linux-image-3.13.0-119-generic linux-image-3.13.0-121-generic
  linux-image-3.13.0-123-generic linux-image-3.13.0-125-generic
  linux-image-4.4.0-79-generic linux-image-4.4.0-81-generic
  linux-image-4.4.0-83-generic linux-image-4.4.0-87-generic
  linux-image-extra-3.13.0-112-generic linux-image-extra-3.13.0-119-generic
  linux-image-extra-3.13.0-121-generic linux-image-extra-3.13.0-123-generic
  linux-image-extra-3.13.0-125-generic linux-image-extra-4.4.0-79-generic
  linux-image-extra-4.4.0-81-generic linux-image-extra-4.4.0-83-generic
  linux-image-extra-4.4.0-87-generic linux-tools-3.13.0-112
  linux-tools-3.13.0-112-generic linux-tools-3.13.0-119
  linux-tools-3.13.0-119-generic linux-tools-3.13.0-121
  linux-tools-3.13.0-121-generic linux-tools-3.13.0-123
  linux-tools-3.13.0-123-generic linux-tools-3.13.0-125
  linux-tools-3.13.0-125-generic
Use 'apt-get autoremove' to remove them.
The following NEW packages will be installed:
  linux-headers-3.13.0-126 linux-headers-3.13.0-126-generic
  linux-image-3.13.0-126-generic linux-image-extra-3.13.0-126-generic
  linux-tools-3.13.0-126 linux-tools-3.13.0-126-generic
The following packages will be upgraded:
  linux-generic linux-headers-generic linux-image-generic linux-libc-dev
  linux-tools-common linux-tools-generic
6 upgraded, 6 newly installed, 0 to remove and 0 not upgraded.
Need to get 62.8 MB of archives.
After this operation, 274 MB of additional disk space will be used.
Do you want to continue? [Y/n]

ls /etc/apt/sources.list.d/
chris-lea-node_js-trusty.list       george-edison55-cmake-3_x-trusty.list       insync.list.save                      ubuntu-toolchain-r-test-trusty.list.save  webupd8team-java-trusty.list
chris-lea-node_js-trusty.list.save  george-edison55-cmake-3_x-trusty.list.save  jtaylor-ipython-trusty.list           ubuntu-x-swat-x-updates-trusty.list.BAK   webupd8team-java-trusty.list.save
cuda-8-0-local-ga2.list             google-chrome.list                          jtaylor-ipython-trusty.list.save      ubuntu-x-swat-x-updates-trusty.list.save  webupd8team-y-ppa-manager-trusty.list
cuda.list                           google-chrome.list.save                     michael-astrapi-ppa-trusty.list.save  virtualbox.list                           webupd8team-y-ppa-manager-trusty.list.save

您使用的是HWE内核版本，但仍然有一个指向3.13内核的meta包。Ubuntu 14.04最初以3.13内核发布。

现在，您将获得3.13和4.4内核的更新。

如果您不想获得3.13更新，请通过运行以下命令删除元软件包

sudo apt-get remove linux-image-generic linux-headers-generic linux-tools-generic

您将通过linux-image-generic-lts-xenial和linux-headers-generic-lts-xenialmeta packs 获得4.4内核的更新。

如果愿意，您也可以删除所有3.13映像，标题和工具包。