Isso é estranho, quando tento atualizar para 14.04.3 LTS de 14.04.2 , parece não atualizar com sudo apt-get upgrade ou dist-upgrade ou do-release-upgrade .
Como mais poderia / devo fazer isso?
Eu tentei:
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.
Adicionar pacotes adicionais não funcionou:
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
Você poderia tentar
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
Fonte: Wiki do Ubuntu