尝试在 Trusty 上安装 FreeNX-Server 总是失败，因为依赖于nxagent
***root@xxxxx-unix:/Downloads# dpkg -i freenx-server_0.7.3.zgit.140303.1848.e81c1e4-0~ppa2~trusty_i386.deb
Selecting previously unselected package freenx-server.
(Reading database ... 169875 files and directories currently installed.)
Preparing to unpack freenx-server_0.7.3.zgit.140303.1848.e81c1e4-0~ppa2~trusty_i386.deb ...
Unpacking freenx-server (0.7.3.zgit.140303.1848.e81c1e4-0~ppa2~trusty) ...
dpkg: dependency problems prevent configuration of freenx-server:
freenx-server depends on nxagent (>= 2.1.0-0); however:
Package nxagent is not configured yet.
dpkg: error processing package freenx-server (--install):
dependency problems - leaving unconfigured
Processing triggers for ureadahead (0.100.0-16) ...
Processing triggers for man-db (2.6.7.1-1) ...
Errors were encountered while processing:
freenx-server***
答案1
FreeNX 相当老了，未维护。
你应该试试X2GO采用相同的 NX 技术（1，2) 并得到积极维护。
服务器安装
您可以找到X2Go wiki 中的详细指南，14.04中必不可少的命令是：
sudo apt-get install python-software-properties
sudo add-apt-repository ppa:x2go/stable
sudo apt-get update
sudo apt-get install x2goserver
客户端软件安装
您不必添加 PPA，x2goclient自 12.04 起即可从存储库。
请注意，X2Go 仍然不相容依赖于 3D 加速的桌面。
答案2
sudo add-apt-repository ppa:freenx-team/trusty
sudo apt-get update
sudo apt-get install freenx-server
有些网站报告使用 ppa freenx-team/testing（而不是 freenx-team/trusty）成功。但这对我来说不起作用
答案3
尝试使用 gdebi，它可以处理需要下载的任何依赖项：
sudo gdebi -i <packagaename.deb>
如果尚未安装，请先输入：
sudo apt-get install gdebi