In computing, Virtual Network Computing (VNC) is a graphical desktop sharing system that uses the RFB protocol to remotely control another computer. It transmits the keyboard and mouse events from one computer to another, relaying the graphical screen updates back in the other direction, over a ...

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Cannot connect to Xen domU via VNC if X isn't installed on domU

I'm trying to build a Xen domU that can be connected through the Xen's VNC server. Below is the template (actually it's generated by OpenNebula): name = 'one-153' #O CPU_CREDITS = 256 memory = '128' ...
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1answer
1k views

Shadowing with x0vncserver - No mouse pointer

I am working on a solution to shadow a user's X session in a multiuser desktop environment. If one wants to shadow a session they use my script. My script sets the proper XAUTHORITY environment ...
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1answer
206 views

VNC greyed screen for Ubuntu server

I have a remote ubuntu server 10.04 32 bit which I'd like to access with vnc. I followed this tut http://www.havetheknowhow.com/Configure-the-server/Install-VNC.html to install vncserver and then ...
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1answer
237 views

PC to MAC Ethernet LAN

I'm trying to setup VNC between a (Windows XP) PC and a MAC (OS X) for semi-permanent installation in a space, but I can't even get the PC to ping the mac. I've got an ethernet cable running between ...
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1answer
83 views

VNC Serve Part of Desktop

Is it possible to only serve a specified box of your desktop via VNC, instead of the entire thing?
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1answer
15 views

Safely wake up black VNC screen cloud servers

What is the safest way to wake up a cloud server (Windows & Linux) via VNC using the keyboard. Looking into a taking a screen grab of a large number of servers (Windows & Linux) using the ...
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1answer
201 views

Use graphical DomU (X11 for Linux, regular UI for Windows) from Dom0 without any GUI on Dom0

I am creating a Xen (para)virtualization setup, with two DomU's: a Windows 10 client install, on HVM, and an Linux client install with X11, on PV. Dom0 is a non-graphical Debian install. So far I have ...
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1answer
3k views

“Unable to open display ” “” error on VNC Server

I'm trying to run a GUI for my CentOS 6 server. I've installed VNC, and I have followed this guide through to the end - http://wiki.centos.org/HowTos/VNC-Server Once the VNC server is started, I try ...
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184 views

Linux VNC doesnt accepting my password

I set up a tight VNC server. I used this tutorial: https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-14-04 The VPS is hosted on Digitalocean. The VNC server ...
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1answer
510 views

unable to open KVM when trying to VNC

I am trying to open a KVM session after connecting to the remote host through VNC Scenario: Server: 192.184.148.52 having a VNC server running at 192.184.148.52:2 with XYZ username and has a KVM ...
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1answer
1k views

Error initializing VNC client in Guacamole

I am trying to allow remote desktop connection to users on a LAN to a machine running Ubuntu 14.04. I have setup Guacamole (using these instructions) and I am able to connect to the web-application, ...
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1answer
261 views

Change VNC password without losing the session

I have a VNC session to my server(linux), but now i need to change their password, however, i cannot lose that session. If I use this command: vncpasswd [passwd-file] Does anyone know if I will ...
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0answers
69 views

noVNC console on Openstack Dashboard is rendering garbled UI on RHEL7

I am running nova-compute on RHEL7. Openstack dashboard's noVNC console is rendering garbled UI for any instance having a UI console. Can somebody please help out? This is working just fine on RHEL65 ...
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0answers
5k views

VNC faster than Spice for remote access to KVM guest?

Having used RDP before, I'm not exactly thrilled with the performance I am seeing from VNC to my KVM virtual machines. The KVM host is Ubuntu 12.04 server x64. I've read that Spice is faster, and ...
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0answers
303 views

x11vnc wish to not have local display updated

I have a difficult user that wants to connect via vnc to control her linux workstation while remote. However, she has an 'issue' where she does not want the workstation display to show her activity ...
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0answers
705 views

Replacing TightVNC with alternate client (CONNECT parameter)

I am in the process of reverse engineering an existing system in an attempt to replace their existing TightVNC applet with something else (hopefully NoVNC if at all possible). So far, here is what I ...
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33 views

How to configure RealVNC to use dual displays full screen

The setup is the following: VMWare ESXi5.0 Virtualisation server running a virtual machine Win7. This virtual machine is configured to have 2x Generic Non-PNP displays both at 1920x1200 resolution. ...
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229 views

VNC file transfer via command line

I have a lot of PCs accessible via VNC over VPN. They all have TightVNC server installed. Using this is the only possible way for file transfer, due to restrictions of the VPN network. Right now, I ...
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0answers
108 views

vncconfig tool allows copy/paste in one direction only on vnccserver

I have a liux debian server running a VNC Server. vncconfig is also running on the server and the connection works great, also tunneled through SSH. But I have problems using copy/paste. When I ...
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182 views

OSX two-factor Authentication for ARD and VNC

I am looking at the possibility to add two-factor authentication , using linOTP and Radius, to all network logins ( Servers, Workstations, Switches, etc... ) So far I have been able to set this up for ...
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191 views

Amazon EC2 VNC Nvidia GPU usage?

I have a GPU instance on Amazon Web Services I am using Ubuntu 14.04 LTS The console show that the drivers are loaded perfectly, see below output $nvidia-smi -q | head ==============NVSMI ...
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161 views

KVM: VNC connection blocked

I'm running a KVM host with three client vms. Two ubuntu servers and one windows server r2 2008. All three VMs have the VNC option enabled in their XML config file: <graphics type='vnc' ...
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999 views

VNC Not Seeing Gnome Desktop in Centos 7

I have a linux box running CentOS 7, which I installed in bash only mode (so it just boots straight into the command prompt), which I am using as a file server. I could do with having a GUI for ...
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366 views

NoVNC being blocked behind firewall, how can I find the port being blocked?

We have an OpenStack cloud running internally and wanted to allow student's access to the NoVNC console from within Openstack's Horizon web panel. Everything work's internally however after adding ...
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0answers
30 views

How to set up unique X-server for each active VNC user

I'm trying to set up a server for analysing MEG data where it's possible for multiple users to simultaneously run unique instances of Matlab on unique X instances. We have 32 gb ram and an SSD, so I'm ...
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189 views

VNC goes to wrong IP (CentOS and Smoothwall VM)

OK, this one is so very weird. I have CentOS 6.3 (host) running Virtual Machine Manager and several virtual machines. The host as the public IP xxx.xxx.xxx.209. One of the virtual machines is ...
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1k views

gnome in vnc not showing any window

When i use vnc to connect my server (i'm using Centos 6 x64 and gnome ), gnome didnt show any title bar / window border, the mouse pointer always in loading animation state this is xstartup code i ...
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84 views

Why would vnc viewer not read from a configuration file?

I have a script that I'm using to start VNC Viewer. My script starts VNC Viewer successfully, but the viewer seems to be ignoring the command-line arguments, as in the dialog pops up asking for a host ...
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0answers
619 views

VNC black screen kills Vmware Workstation sessions on host

There are other similar questions related to mine (e.g. VNC viewer issue - showing black screen ) - my case seems a little bit different: I start vncserver on my CentOS 5.8 host, which acts as a ...
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0answers
728 views

VNC server login issue wit CentOS release 5.7 (Final)

While logging through Remote desktop viewer it works for root, but not for other users (myuser)?. Config /etc/sysconfig/vncservers: If I use root instead of myuser it works. But not for the linux ...
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0answers
108 views

IIS7.5 non-http port routing

I am trying to use IIS7.5 as a way to route to vnc on different servers or virtual servers. I cant get http to work but not non-http protocols like VNC, telnet, etc. Is there a way to do that? ...
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38 views

Blank screen when connecting to vino-server (debian jessy) with realvnc client

Trying to connect to a Debian machine running gnome. It actually worked OK (until I've changed hostname and rebooted) Now all I get is a blank - black screen after connecting I've removed xstartup ...
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31 views

Logging out of Screen Share bumps you into a local session

I noticed some scary behavior while testing Screen Sharing on macs. I have root logged in locally on an imac. I use Screen Sharing from a different mac, choosing to "Log In" such that it doesn't ...
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16 views

Set VNC Server as Display Environment Linux

I am using Amazon Web Services as my server for my website. I am trying to run a graphical application on my server. In my attempts to do this I set up a vnc server. I am able to see the desktop once ...
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21 views

Server doesn't boot after installing X Window System

I've been trying to install XFCE to use with VNC on a Centos 7 server but every time I install X Window System the server doesn't boot. Always with the dracut error: /dev/md1 does not exists Boot ...
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32 views

Can't connect to VNC server via OpenVPN

I've got the problem with connecting via VNC to remote computer. Connection goes through OpenVPN and I'm routing 5900 port to localhost.. ssh -p(port) -L5900:vpn adress of machine:5900 ...
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65 views

CentOS7 KVM - Mouse is “off” on the console with virt-manager

I am managing a KVM host with virt-manager from a Windows 8.1 PC. I have XMING\PuTTY installed on the PC w\ X11 Forwarding. I SSH to the KVM host and run virt-manager. I noticed that the mouse is ...
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93 views

XRDP fails to join sessions in certain scenarios

I'm trying to configure xrdp on CentOS 7 to join to already existing sessions. This functionality is partially present at the moment and here's what I mean by partially: when I xrdp from windows ...
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0answers
41 views

Lost vncserver connection after EC2 instance reboot

I was able to get the vnc remote desktop working in AWS EC2 with an Red Hat Linux instance (it is basically Centos 7). The following were the steps: ssh into the instance sudo yum update sudo yum ...
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0answers
73 views

Limiting TightVNC Server's number of concurrent sessions

I have a Raspberry Pi, and I'm using TightVNC Server to access remotely. My /etc/init.d/tightvnc file (which is just the service that launches at boot) looks like this: #!/bin/sh # ...
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0answers
42 views

Connection Refused RealVNC and Same with Remote Desktop Program Windows Server 2012

So i set up a virtual machine on QEMU on my linux machine hoping to get some windows server running but when i tried to set up RDP i couldn't connect through my client. So i thought i'd try RealVNC ...
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0answers
124 views

OS X (Yosemite) auto login on remote desktop

I have configured my VNC server on my iMac using the "Share Desktop" feature. I'm trying to access with Ubuntu default's client Remmina. I'm currently trying to access as a view-only client but it's ...
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0answers
37 views

The necessity of vncpasswd

On every xrdp/vncserver tutorial it is indicated to use the command vncpasswd after creating a new user but I see that it is enough if I set the user into the tsusers group and set an entry for it in ...
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0answers
68 views

Centos 5.8 - firewall blocking Virtualizor staff

I run private KVM/OpenVZ hosting and im currently having issues with it. So I opened a ticket with virtualizor and they say they cant access the VNC connections, but I can. I figured the only thing ...
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302 views

OpenStack Live-Migration VNC server error

Following these steps to do a live migration results in: 2014-12-08 00:42:38.772 17808 ERROR nova.virt.libvirt.driver [-] [instance: db9d53ac-4a75-4009-a67e-f45abf9d4d32] Live Migration failure: ...
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295 views

Xserve running Mac OS X 10.6.8 has HTTP, SSH & ARD/VNC ports open, yet cannot connect?

The subject says it all. A client I have has a relatively ancient Xserve (2009 model I believe) that is running Mac OS X 10.6.8 Server. We’ve been able to remote into the system without issue in the ...
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98 views

stop rdp to deactivation session after close

I try to run VNC Server on my Server2012 R2 (VM on HyperV Host). I login via RDP (mstsc.exe) to a Windows Server 2012 R2. Connect via real VNC to the Server also. After closing the Windows RDP ...
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0answers
182 views

Does wayland support video card(s) resource isolation?

From what I know, with hypervisors, I need an IOMMU capable motherboard and multiple graphics cards to run multiple virtualized instances remotely (correct me if I'm wrong). ESXi allows for ...
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0answers
66 views

VNC with RedHat 7.0

I am having troubles with VNC for connection to RH 7.0 from W7. My connection cannot be established as the connection times out every time. I am unfamiliar with the RH 7 GUI and cannot seem to find ...
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0answers
588 views

UltraVNC intigration with MDT

I'm trying to get UltraVNC integrated with WinPE to allow remote control over deployments in MDT 2012. These are the steps I've taken so far. Extracted winvnc.exe, vnchooks.dll to a directory ...