I already went through the similar issue tracked in xsetroot, xterm and twm are not found when starting XRDP/Xvnc (on Cent OS), however it haven't helped me to fix.
I am using MAC and trying to install XRDP in CentOS release 6.5 (64 bit). So that I can connect to this Centos machine from MAC.
I followed the steps explained in http://ajmatson.net/wordpress/2014/01/install-xrdp-remote-desktop-to-centos-6-5/
Created a new VNC user account named user_name_one and allotted a password as mentioned in http://wiki.centos.org/HowTos/VNC-Server
Now, when I tried to connect Centos using Remote Desktop Connection (from MAC), I am receiving following error:
Initially my vncservers configuration in etc/sysconfig/vncservers are as follows:
VNCSERVERS="1:user_name_one"
VNCSERVERARGS[1]="-geometry 800x600"
As suggested, now changed the config values as follows:
VNCSERVERS="0:user_name_one"
VNCSERVERARGS[0]="-geometry 800x600"
Error log in /var/log/xrdp-sesman.log:
[20140416-06:43:43] [WARN ] [init:45] libscp initialized
[20140416-06:43:43] [CORE ] starting sesman with pid 1442
[20140416-06:43:43] [INFO ] listening...
[20140416-06:46:56] [INFO ] scp thread on sck 7 started successfully
[20140416-06:46:56] [INFO ] ++ created session (access granted): username user_name_one, ip 202.83.25.7:13889 - socket: 7
[20140416-06:46:56] [INFO ] starting Xvnc session...
[20140416-06:47:06] [ERROR] X server for display 10 startup timeout
[20140416-06:47:06] [INFO ] starting xrdp-sessvc - xpid=1717 - wmpid=1716
[20140416-06:47:06] [ERROR] X server for display 10 startup timeout
[20140416-06:47:07] [ERROR] another Xserver is already active on display 10
[20140416-06:47:07] [DEBUG] aborting connection...
[20140416-06:47:07] [INFO ] ++ terminated session: username user_name_one, display :10.0, session_pid 1715, ip 202.83.25.7:13889 - socket: 7
Log file found under /home/user_name_one/.vnc/SPU4-1-3-24-47230 :1.log
Xvnc TigerVNC 1.1.0 - built Feb 4 2014 05:26:31
Copyright (C) 1999-2011 TigerVNC Team and many others (see README.txt)
See http://www.tigervnc.org for information on TigerVNC.
Underlying X server release 11300000, The X.Org Foundation
Initializing built-in extension Generic Event Extension
Initializing built-in extension SHAPE
Initializing built-in extension MIT-SHM
Initializing built-in extension XInputExtension
Initializing built-in extension XTEST
Initializing built-in extension BIG-REQUESTS
Initializing built-in extension SYNC
Initializing built-in extension XKEYBOARD
Initializing built-in extension XC-MISC
Initializing built-in extension XFIXES
Initializing built-in extension RENDER
Initializing built-in extension RANDR
Initializing built-in extension DAMAGE
Initializing built-in extension MIT-SCREEN-SAVER
Initializing built-in extension DOUBLE-BUFFER
Initializing built-in extension RECORD
Initializing built-in extension DPMS
Initializing built-in extension X-Resource
Initializing built-in extension XVideo
Initializing built-in extension XVideo-MotionCompensation
Initializing built-in extension VNC
Initializing built-in extension GLX
Wed Apr 16 06:43:46 2014
vncext: VNC extension running!
vncext: Listening for VNC connections on all interface(s), port 5900
vncext: created VNC server for screen 0
No protocol specified
vncconfig: unable to open display ":0"
No protocol specified
xrdb: Resource temporarily unavailable
xrdb: Can't open display ':0'
No protocol specified
xmodmap: unable to open display ':0'
No protocol specified
No protocol specified
** (gnome-session:1605): WARNING **: Cannot open display:
Best Answer
This error message is your issue:
You should be connecting to RDP on display
:0. Double check that the display is set in your configuration files to:0instead of:1. Also make sure that the CentOS system is in runlevel 5 and not 3.You can check like this:
If it's anything but 5, then run this command to temporarily switch it: