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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508 views

vnc to kvm host not working despite succesfull network connection

I have a centos 6.4 box running openstack grizzly. I have various instances running, yet I can not view their console. Horizon has a built in console viewer called novnc-proxy, which is not working ...
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2answers
193 views

What do I need to know to get VNC working?

I usually access remote machines over ssh via the commandline, but now need to connect to one using VNC so I can actually use the desktop. Other people can successfully connect to this PC (running Win ...
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2answers
564 views

VNC application/terminal server

Which software should I use, if I want to set up a linux VNC terminal server that works in this way: The VNC server should be able to accept up to X simultanous connections on the same port 5900. The ...
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2answers
128 views

problem with VNC

I upload vnc on my server and when i execute it : winvnc.exe -install i get this error : The vnc service could not be installed what am i going to do ?
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2answers
499 views

Unable to establish VNC connection with a particular host on the network

When my OpenVPN session is on, I'm able to establish VNC sessions on other computers. Just this particular computer which I can't seem to figure out why. Here are some methods I've tried Turn of ...
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votes
1answer
1k views

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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vote
1answer
1k views

Cannot connect to Openstack Instance via horizon, but SSH works?

I've got an OpenStack deployment running inside a VM for testing purposes. My setup is as follows: Host Ubuntu x64 with Virtualbox -> Guest Ubuntu x64 with OpenStack -> Ubuntu X64 Server Test ...
1
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1answer
148 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 ...
1
vote
1answer
231 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
79 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
112 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
537 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, ...
0
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1answer
68 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 ...
0
votes
1answer
24 views

How can I view my logged in desktop on Red Hat with my VNCViewer?

I have TigerVNC running on my Red Hat machine. I am using 5902 and 5903. When I remote in, it is a whole new X session. I changed one of the ports to 0, but RH says it is already being used. I am ...
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1answer
252 views

Sharing a VNC session

Several of our users access a group of Linux servers via VNC and recently have decided they'd like to share their session with other users doing the same type of work. Being that they don't really ...
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1answer
425 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 ...
0
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1answer
113 views

How to access vm inside a vm via VNC?

For some reasons I installed virtual machines inside a virtual machine, like this: A( B( C )) where A is the physical machine, B is a vm and the network type is NAT. And C is also a virtual machine ...
0
votes
1answer
408 views

VNC into EC2 Ubuntu Instance

I followed the guide here, and I seem to be able to connect but I get a blank screen using the Chicken VNC viewer. Why?
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1answer
155 views

Cisco VPN and split tunneling

I have a linux box with one NIC and Cisco VPN client installed. The problem is I want to use VNC while connected to the VPN, but the cisco router doesn't support split-tunneling and LAN access is ...
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1answer
120 views

Monitor status while using VNC

So after connecting to a vnc server via vnc viewer to my desktop (remotely), Is it possible to know whether the monitor connected to the CPU is switched ON or not. Simply put, from command prompt how ...
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1answer
474 views

Remote Management/VNC Mac OSX Server 10.6 from Windows Server 2008

What is the most compatible/reliable software to remote manage an osx server using windows server? I tried to activate the remote management from osx server then use remote desktop login from ...
0
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1answer
539 views

problems connecting through vncviewer

I am currently connecting ok, but all that displays is a black screen in windows vncviewer. I looked at the log and this is what I got. Can someone help explain? Sun Oct 31 16:20:01 2010 vncext: ...
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votes
1answer
164 views

Is there a tool that will allow concurrent remote sessions into an iMac?

Looking for 2+ users to be able to remote into an iMac we have and each have their own session. Machine is going to be used as a platform to develop for iOS as well as a general purpose machine. I ...
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1answer
62 views

KVM unix socket file permission for VNC

I'm using kvm-qemu/libvirtd for a bunch of kvms. I'm using vnc for the graphical interface. By default, it listens on a tcp socket. I want to have it listen on a unix socket instead. Looking at some ...
2
votes
0answers
207 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 ...
2
votes
0answers
461 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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0answers
47 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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0answers
72 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 ...
1
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0answers
21 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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0answers
138 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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0answers
713 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 ...
1
vote
0answers
1k views

Can not display Proxmox console due to Connection time out

When I try to open console in proxmox ve nothing happens and I see this error in logs: no connection : Connection timed out TASK ERROR: command '/bin/nc -l -p 5900 -w 10 -c '/usr/sbin/qm vncproxy 100 ...
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0answers
451 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 ...
1
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0answers
97 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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0answers
27 views

OpenStack Live-Migration VNC server error

I am following steps in : https://www.mirantis.com/blog/tutorial-openstack-live-migration-with-kvm-hypervisor-and-nfs-shared-storage/ But got a following error, when i try doing live-migration: ...
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votes
0answers
13 views

Multiple screens on OSX Server

I tried to follow the 3rd answer in the following post: Mac OS X multi-user thin client server (terminal server)? I am at the point where I have the system server running and an user specific server. ...
0
votes
0answers
32 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 ...
0
votes
0answers
141 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 ...
0
votes
0answers
92 views

novnc apache2 reverse proxy code 1006

I just installed webvirtmgr but the noVNC console is not working (code 1006). The detailed error of the google chrome console is: [blocked] The page at ...
0
votes
0answers
70 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 ...
0
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0answers
39 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 ...
0
votes
0answers
105 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 ...
0
votes
0answers
242 views

Advertising security type 18 (VNC)

I am connecting to a Red Hat Miapo via VNC (well at least trying to) and I am getting some weird errors. From the VNC Viewer (Windows) I receive the error: "unable to connect to VNC server using your ...
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0answers
44 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 ...
0
votes
0answers
191 views

TigerVNC: Couldn't enumerate devices

I have CentOS 6.5 server, and I'm trying to setup vnc. I followed this guide : http://wiki.centos.org/HowTos/VNC-Server, and the service seems to start ok. But I can't connect. Checking the log in my ...
0
votes
0answers
125 views

XenServer Console

I just follow this tutorial to access XenServer Console. I can run the first example, and it's working fine, but for the second example it's not working. I cannot access to console with a java ...
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0answers
91 views

VNC over SSL-VPN tunnel

I've setup a SSL-VPN using Cisco ASA with AnyConnect client. The ASA is behind a IPS/Router. A handful of Linux machines have VNC setup behind the ASA. I want to allow VNC over SSL-VPN connection ...
0
votes
0answers
127 views

Disabling VNC for HVM on Xen causes error

When I try to start a Xen HVM guest without VNC, I always get this error libxl: error: libxl_dm.c:1212:device_model_spawn_outcome: domain 25 device model: spawn failed (rc=-3) libxl: error: ...
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0answers
753 views

How to get xrdp working on centos/rhel 6?

I'm trying to get xrdp running on centos/rhel 6. I installed it from the epel repo (also installed Gnome desktop and tigervnc-server). I'm able to start the service, and also get to the login screen ...
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0answers
3k 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 ...