这很奇怪，当我尝试14.04.3 LTS从 升级到 时14.04.2，似乎无法使用sudo apt-get upgrade或dist-upgrade或进行升级do-release-upgrade。
我还能/应该怎么做？
我试过了：
alvas@ubi:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty
alvas@ubi:~$ do-release-upgrade
Checking for a new Ubuntu release
No new release found
alvas@ubi:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
alvas@ubi:~$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
已编辑
添加其他包无效：
alvas@ubi:~$ sudo apt-get install --install-recommends linux-generic-lts-vivid xserver-xorg-core-lts-vivid xserver-xorg-lts-vivid xserver-xorg-video-all-lts-vivid xserver-xorg-input-all-lts-vivid libwayland-egl1-mesa-lts-vivid
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package linux-generic-lts-vivid
E: Unable to locate package xserver-xorg-core-lts-vivid
E: Unable to locate package xserver-xorg-lts-vivid
E: Unable to locate package xserver-xorg-video-all-lts-vivid
E: Unable to locate package xserver-xorg-input-all-lts-vivid
E: Unable to locate package libwayland-egl1-mesa-lts-vivid
答案1
你可以尝试
sudo apt-get install --install-recommends linux-generic-lts-vivid xserver-xorg-core-lts-vivid xserver-xorg-lts-vivid xserver-xorg-video-all-lts-vivid xserver-xorg-input-all-lts-vivid libwayland-egl1-mesa-lts-vivid
来源： Ubuntu 维基