无法修正错误，因为您要求某些软件包保持现状，就是它们破坏了软件包间的依赖关系
http://blog.sina.com.cn/s/blog_b4a60cdb0101cdhm.html
系统环境ubuntu12.04 LTS
偶然你使用sudo apt-get install xx时提示：
正在读取软件包列表... 完成
正在分析软件包的依赖关系树
正在读取状态信息... 完成
有一些软件包无法被安装。如果您用的是 unstable 发行版，这也许是
因为系统无法达到您要求的状态造成的。该版本中可能会有一些您需要的软件
包尚未被创建或是它们已被从新到(Incoming)目录移出。
下列信息可能会对解决问题有所帮助：
中间是一些依赖包说明
无法修正错误，因为您要求某些软件包保持现状，就是它们破坏了软件包间的依赖关系。
这是一些依赖关系与源出了问题
解决方法：
sudo apt-get clean
cd /var/lib/apt
sudo mv lists lists.old
sudo mkdir -p lists/partial
sudo apt-get clean
（参阅http://forum.ubuntu.org.cn/viewtopic.php?f=80&t=372236）
然后换一个源
gksu gedit /etc/apt/sources.list
从下面列表中选择合适的源，替换掉文件中所有的内容，保存编辑好的文件:
最后执行sudo apt-get update
源列表
- 骨头兄亲自搭建并维护的 Ubuntu源（该源位于浙江杭州百兆共享宽带的电信机房)， 包含Deepin 等镜像：
deb http://ubuntu.srt.cn/ubuntu/ quantal main restricted universe multiverse deb http://ubuntu.srt.cn/ubuntu/ quantal-security main restricted universe multiverse deb http://ubuntu.srt.cn/ubuntu/ quantal-updates main restricted universe multiverse deb http://ubuntu.srt.cn/ubuntu/ quantal-proposed main restricted universe multiverse deb http://ubuntu.srt.cn/ubuntu/ quantal-backports main restricted universe multiverse deb-src http://ubuntu.srt.cn/ubuntu/ quantal main restricted universe multiverse deb-src http://ubuntu.srt.cn/ubuntu/ quantal-security main restricted universe multiverse deb-src http://ubuntu.srt.cn/ubuntu/ quantal-updates main restricted universe multiverse deb-src http://ubuntu.srt.cn/ubuntu/ quantal-proposed main restricted universe multiverse deb-src http://ubuntu.srt.cn/ubuntu/ quantal-backports main restricted universe multiverse
- 网易163更新服务器（广东广州电信/联通千兆双线接入）， 包含其他开源镜像：
deb http://mirrors.163.com/ubuntu/ quantal main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ quantal-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ quantal-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ quantal-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ quantal-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ quantal main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ quantal-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ quantal-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ quantal-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ quantal-backports main restricted universe multiverse
- 搜狐更新服务器（山东联通千兆接入， 官方中国大陆地区镜像跳转至此） ， 包含其他开源镜像：
deb http://mirrors.sohu.com/ubuntu/ quantal main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ quantal-security main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ quantal-updates main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ quantal-proposed main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ quantal-backports main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ quantal main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ quantal-security main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ quantal-updates main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ quantal-proposed main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ quantal-backports main restricted universe multiverse
- LupaWorld 更新服务器（浙江杭州电信/联通双线服务器）， 包含其他开源镜像：
deb http://mirror.lupaworld.com/ubuntu quantal main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu quantal-security main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu quantal-updates main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu quantal-backports main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu quantal-proposed main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu quantal main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu quantal-security main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu quantal-updates main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu quantal-backports main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu quantal-proposed main restricted universe multiverse
- 常州贝特康姆软件技术有限公司更新服务器（江苏常州电信服务器）， 包含其他开源镜像。
-
- ( CN99域名 系 “常州市亚科技术有限公司”所注册，但此公司与常州贝特康姆的法人代表和营业地址相同。所以本镜像实际即原 CN99。但现在 CN99镜像的域名已改为跳转至 网易镜像）:
deb http://centos.bitcomm.cn/ubuntu quantal main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu quantal-security main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu quantal-updates main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu quantal-backports main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu quantal-proposed main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu quantal main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu quantal-security main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu quantal-updates main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu quantal-backports main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu quantal-proposed main restricted universe multiverse
以下为有教育网接入的服务器（推荐教育网用户使用，部分非教育网用户也有可观的速度。教育网用户请优先使用IPv6地址。
- 中国科学技术大学更新服务器（位于合肥，千兆教育网接入，百兆电信/联通线路智能路由），由 中科大 Linux用户协会和 中科大学网络信息中心维护， 包含其他开源镜像， Deepin 官方服务器 实际亦指向此处：
deb http://debian.ustc.edu.cn/ubuntu/ quantal main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ quantal-security main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ quantal main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ quantal-security main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe
-
- IPv6-Only 地址
deb http://mirrors6.ustc.edu.cn/ubuntu/ quantal main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ quantal-security main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ quantal main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ quantal-security main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe
- 清华大学更新服务器，（教育网核心节点百兆接入，已计划提高到千兆）由 清华大学学生网管会维护。 包含其他开源镜像：
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ quantal main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ quantal-security main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ quantal main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ quantal-security main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse
-
- IPv4-Only 地址
deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ quantal main restricted universe multiverse deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ quantal-security main restricted universe multiverse deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ quantal main restricted universe multiverse deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ quantal-security main restricted universe multiverse deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse
-
- IPv6-Only 地址
deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ quantal main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn//ubuntu/ quantal-security main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ quantal main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ quantal-security main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe
- 北京交通大学更新服务器（教育网/电信百兆接入），由 北京交通大学信息中心赞助， 包含其他开源镜像。
-
- （域名中的 bjtu 可以替换为 njtu ，即北交旧名“北方交通大学”对应域名） ：
deb http://mirror.bjtu.edu.cn/ubuntu/ quantal main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ quantal-security main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ quantal main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ quantal-security main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe
-
- IPv6-Only 地址
deb http://mirror6.bjtu.edu.cn/ubuntu/ quantal main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ quantal-security main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ quantal main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ quantal-backports main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ quantal-proposed main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ quantal-security main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ quantal-updates main multiverse restricted universe
- 北京理工大学更新服务器（仅教育网可以访问）， 包含其他开源镜像：
deb http://mirror.bit.edu.cn/ubuntu/ quantal main restricted universe multiverse deb http://mirror.bit.edu.cn/ubuntu/ quantal-security main restricted universe multiverse deb http://mirror.bit.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse deb http://mirror.bit.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse deb http://mirror.bit.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse deb-src http://mirror.bit.edu.cn/ubuntu/ quantal main restricted universe multiverse deb-src http://mirror.bit.edu.cn/ubuntu/ quantal-security main restricted universe multiverse deb-src http://mirror.bit.edu.cn/ubuntu/ quantal-updates main restricted universe multiverse deb-src http://mirror.bit.edu.cn/ubuntu/ quantal-backports main restricted universe multiverse deb-src http://mirror.bit.edu.cn/ubuntu/ quantal-proposed main restricted universe multiverse