upgrade from 14.04 to 14.10 error

[tianguowei]

无法计算升级

在筹划升级时，一个不可解决问题发生了：

 这可能是由以下原因造成的：
 *升级为 Ubuntu 的预发行版本
 *运行目前的 Ubuntu 预发布版本
 *不是由 Ubuntu 提供的非官方软件包

如果这些都不生效，请在终端中使用命令 'ubuntu-bug ubuntu-release-upgrader-core' 来报告 bug。

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8 [origin: unknown]
ProcVersionSignature: Ubuntu 3.16.0-57.77~14.04.1-generic 3.16.7-ckt20
Uname: Linux 3.16.0-57-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
Date: Fri Jan 8 13:43:02 2016
InstallationDate: Installed on 2015-03-08 (305 days ago)
InstallationMedia: Ubuntu-Kylin 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-01-07 (1 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update.manager.release.upgrades: 2016-01-03T21:30:02.073721

[Brian Murray (brian-murray)]

Please install a desktop meta package then try the upgrade again.

2016-01-07 08:12:43,679 DEBUG need_server_mode(): can not find a desktop meta package or key deps, running in server mode

These are the meta packages we support.

12 # the meta-pkgs we support
13 MetaPkgs=ubuntu-desktop, kubuntu-desktop, xubuntu-core,
14 xubuntu-desktop, ubuntustudio-desktop, mythbuntu-desktop,
15 kubuntu-netbook, lubuntu-core, lubuntu-desktop, ubuntu-gnome-desktop