公司开发人员电脑都安装的是Ubuntu 10.04，现在越来越不好用，而且，很多同事发现编译最新的Firefox OS都有问题，所以，我尝试升级并把碰到的问题记录下来。
升级
修改源
$ cat /etc/apt/sources.list
deb http://172.26.32.18/ubuntu/ lucid main restricted universe multiverse
deb http://172.26.32.18/ubuntu/ lucid-security main restricted universe multiverse
deb http://172.26.32.18/ubuntu/ lucid-updates main restricted universe multiverse
deb http://172.26.32.18/ubuntu/ lucid-proposed main restricted universe multiverse
deb http://172.26.32.18/ubuntu/ lucid-backports main restricted universe multiverse
# aliyun
deb http://mirrors.aliyun.com/ubuntu/ lucid main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ lucid-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ lucid-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ lucid-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ lucid-backports main restricted universe multiverse
开始升级
$ sudo do-release-upgrade
nis无法启动，导致升级过程中配置nis包失败
$ grep redhat /etc/hosts
172.26.32.12 cd-redhat-001.TCTCD
$ tail -1 /etc/yp.conf
ypserver cd-redhat-001.TCTCD
$ cat /etc/defaultdomain
TCTCD
$ grep NIS /etc/default/nis | grep -Ev '#'
NISSERVER=false
NISCLIENT=true
NISMASTER=
$ cat /etc/auto.master
/home /etc/auto.home
$ cat /etc/auto.home
xcsu cd-redhat-001.TCTCD:/home/xcsu
$ /usr/lib/yp/ypinit -s cd-redhat-001.TCTCD
$ sudo service portmap restart
$ sudo service nis restart
启动后登录时发现只能用administrator和guest登录
$ cat /etc/lightdm/lightdm.conf
[SeatDefaults]
user-session=ubuntu
greeter-session=unity-greeter
allow-guest=false
greeter-show-manual-login=true
重启电脑，就可以用其它用户登录了
$ sudo reboot