Installation 如何安装&x27；x2goserver'；和'；x2goserver xsession'；在Ubuntu上？

我正试图用Ubuntu 14.10在远程机器上安装x2go服务器。 这就是我尝试的方式：

apt-add-repository ppa:x2go/stable
apt-get update
apt-get install x2goserver x2goserver-xsession

在最后一行代码之前一切都很顺利，它输出：

Reading package lists... Done
Building dependency tree
Reading state information... Done
Package x2goserver-xsession is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package x2goserver is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'x2goserver' has no installation candidate
E: Package 'x2goserver-xsession' has no installation candidate

我只想使用安装在我个人电脑上的x2goclient连接远程机器

---

有人知道如何解决这个问题吗？

你找到答案了吗？