Questions tagged [vnc]

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 network.

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x11vnc on Ubuntu 16.04 Gnome with systemd

I am having troubles to start x11vnc service on Ubuntu server 16.04 Gnome. It used to work just fine under 14.04. Not sure if related to x11vnc itself or the systemd. Here is the systemd service file ...
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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 ...
jocull's user avatar
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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. ...
0xDEADBEEF's user avatar
2 votes
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VNC server on Ubuntu 22.04 only show blank screen

On Ubuntu one can enable a VNC server via Settings > Sharing > screen-sharing > VNC (my Desktop is german, I just guessed). Another way is to start a vnc-server via shell, i.e.: ...
user981366's user avatar
2 votes
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527 views

x11vnc -reflect listen crashes when the source VNC server connects to it

I want to run x11vnc in reflect mode and reverse/listenning connection mode. So, x11vnc it's going to act as a repeater for another vnc server and it's going to wait for this second vnc server to ...
Héctor's user avatar
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1 answer
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Copy and paste from a QEMU VM with VNC graphics?

I run a headless server that uses qemu + kvm to run a few VMs, and I manage them with virsh + xml file definitions. Because this a remote / headless system, I set the graphics as VNC, and then with ...
Jason's user avatar
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2 votes
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259 views

Access default unity desktop only over VNC connection

I installed Unity desktop on my cloud instance (18.04.1 x64) sudo apt-get install ubuntu-desktop and the VNC Server sudo apt-get install vnc4server What would be the contents of .vnc/xstartup file ...
saibbyweb's user avatar
2 votes
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940 views

HOWTO: setup persistent RDP sessions

In an Ubuntu 16.04 LTS server (with XFCE4), I am running X11vnc as a RDP server so people can connect to it from using Windows Remote Desktop (either from Windows or OSX). My current configuration ...
hyiltiz's user avatar
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2 votes
2 answers
8k views

tigervnc server fails with HOME variable not set

The system is Fedora Core 24. It is a recent upgrade from fc23. With fc23 the vncserver started without error. However after the upgrade the follow error occurs: Unit vncserver@:2.service has begun ...
dan sawyer's user avatar
2 votes
1 answer
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vncserver for individual user doesn't work

Following the guide for Start/Stop/Restart individual vnc servers defined in /etc/sysconfig?, still I am not able to bring up a user's desktop. While vncserver says that this desktop is already ...
mahmood's user avatar
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VNC: one session per user, recoverable

I know how to use VNC as a single user to see what's on the screen (possibly even the login screen, out of the Window Manager). If the vnc server crashes, no big deal, launch it again, restart your ...
dargaud's user avatar
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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
Abhishek Srivastava's user avatar
2 votes
0 answers
3k 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 ...
stukerr's user avatar
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0 answers
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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 (...
DRH's user avatar
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2 votes
1 answer
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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' ...
Hai Minh Nguyen's user avatar
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1 answer
2k views

guacamole users with admin perms

I installed guacamole from source after a few hours of toil and trying out serveral outdated guides. But at this point I can go to the site and log into the guac web interface and connect to the guacd ...
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102 views

Blocking right-click/keyboard on a VNC server

I'm planning to host an application I don't have the source for via VNC in a kiosk mode kind of manner. A flash game running server-side, to simplify matters. First, only part of the window should be ...
Dawid Blinkov's user avatar
1 vote
0 answers
3k views

xrdp not connecting on centos 8, how to fix that?

I have used below steps on my cloud machine. Allowed all ports on azure machine(No security for testing). Installed GUI. sudo dnf groupinstall "Server with GUI" installed xrdp and vnc. ...
uday kiran's user avatar
1 vote
0 answers
50 views

Having a Secure / Copy Protected DESKTOP Environment in Cent OS Linux

We have a VPS / Bare-metal server rented on a data-center and we access them over internet through user ID and password. It is running CentOS 7. That is direct access and there's no VPN in between. We ...
SS891's user avatar
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Can't select install options when running Debian in headless QEMU/KVM

I am trying to get a Debian VM running on my Arch Linux machine using headless QEMU/KVM. To begin, I boot the virtual system with the following command: qemu-system-x86_64 \ -cdrom ../iso/debian-...
peachykeen's user avatar
1 vote
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2k views

VNC server with multiple users

I assigned each user a VNC port, but when start the services I see this errors: root@kensa-dev-server1:~# systemctl start [email protected] Job for [email protected] failed because the control ...
H Aßdøµ's user avatar
1 vote
0 answers
421 views

No packages in any requested group available to install or update on Centos 7 when installing XFCE

I have a GCP instance running Centos 7 and am trying to follow the instructions here to get vncserver running but I keep getting: Maybe run: yum groups mark install (see man yum) No packages in any ...
TroyB's user avatar
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239 views

Differences of Docker vs. Docker-Compose attaching to user-defined bridged network

Environment I'm trying to setup User-Machine: dockerized VNC-connected containers (in Docker network vm_network) for different purposes These should be connected by the user using Guac: Apache ...
David Lassig's user avatar
1 vote
0 answers
236 views

VNC error during live migration of KVM vm

If I live migrate a KVM vm from host 1 to host2 then I get error for vnc. Is there any way to change the vnc dynamically before the migration starts. I donot want to stop and start my vm before or ...
Ash's user avatar
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1 vote
1 answer
1k views

SSH connection using proxy instead of port forwarding

I have a linux system behind a network where I cannot do port forwarding Is it possible to configure my SSH and VNCserver on the machine to use a proxy server from which i can make vnc and ssh ...
ProgNi's user avatar
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1 vote
1 answer
2k views

VNC Server which attaches to current session

I use Debian 9 + fluxbox so there are no 1click enable remote desktop solutions: http://www.penguintutor.com/linux/tightvnc The problem with tightvnc, that (at least by default) it will spawn a ...
tekken's user avatar
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1 vote
1 answer
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Openstack can't connect to instance via Horizon console

I installed Openstack on a machine with Ubuntu Server 16.04 and almost everything works fine, but when I try to connect to the Horizon console of the instance I get the error: Unable to load console....
Gianmarco Biscini's user avatar
1 vote
0 answers
108 views

Linux ThinClients show MAC but not originating IP on RDS servers

We have an issue where we cannot find our remote workers' Linux (ThinStation OS) thin clients' IP addresses. Our people work at 4 remote facilities and remote into an RDS cluster in our data center (3 ...
KidACrimson's user avatar
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1k 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 user@server....
beather4N's user avatar
1 vote
0 answers
844 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 ...
Etienne678's user avatar
1 vote
0 answers
476 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 ...
Koendb's user avatar
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1 vote
2 answers
778 views

apache listening to 7080 after installing ubuntu desktop (gui) on 10.04 vps

Before ubuntu desktop was installed sites were normal and everything (virtuals hosts/ sites) was working normally but suddenly it stopped listening to 80 and went on 7080 and 7081 any idea why this ...
rashid's user avatar
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1 vote
0 answers
583 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 LOG=======...
deadmantfa's user avatar
1 vote
0 answers
841 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' port='...
endian's user avatar
  • 113
1 vote
0 answers
2k 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 ...
t0xic's user avatar
  • 11
1 vote
0 answers
44 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 ...
user210881's user avatar
1 vote
2 answers
3k 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 ...
Isaac's user avatar
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1 vote
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212 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 ...
mberding's user avatar
1 vote
1 answer
284 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 ...
user46250's user avatar
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1 vote
0 answers
1k 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 ...
David Ramirez's user avatar
1 vote
0 answers
171 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? ...
Mike Reeves's user avatar
1 vote
1 answer
249 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 ...
edbles's user avatar
  • 11
1 vote
1 answer
2k 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: ...
user58785's user avatar
1 vote
1 answer
259 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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0 answers
45 views

Openstack - VNC console of an instance stuck in "connecting" mode

newbie here! I have 3 physical machines with Openstack Yoga installed and running (a controller, a compute and a block storage node). These 3 machines are physically connected (through Ethernet cable) ...
Pybubb's user avatar
  • 13
0 votes
0 answers
249 views

How to make Ubuntu VM available to multiple users in the cloud?

I have a design technical question. Let me describe the use case first: I have 20 students. My idea is that they all can run a full Ubuntu Desktop from within their web browser. Everyone should have ...
befaro's user avatar
  • 43
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1 answer
216 views

Watermark for VNC displays

Are there any feasible options for adding a watermark (i.e. diagonal transparent text) to VNC sessions? I did not find such features provided out of the box for the existing open-source VNC servers. ...
Michael's user avatar
  • 239
0 votes
1 answer
4k views

Set up TigerVNC on Ubuntu 20.02 with systemd

I am trying to setup TigerVNC - or indeed any VNC server - on Ubuntu 20.04, and I am beginning to get frustrated, because none of the instructions I can find actually work, although I have got it to ...
j4nd3r53n's user avatar
  • 236
0 votes
0 answers
1k views

Does Apache Guacamole support VNC Connection with GNUTLS?

Currently I've working on my custom Remote Desktop Service which is strongly based on Apache Guacamole. I want my whole session encrypted with TLS when I enter Guacamole and connect to my PC with a ...
redjen's user avatar
  • 1
0 votes
0 answers
351 views

How to start a VNC viewer to display all previously saved VNC viewer desktops (that are now destroyed)?

Problem: My current VNC viewer (let say VNC viewer 'A') resides on a machine (let say machine 'A') that need to be killed because our IT department need to rebuild the machine 'A'. I have a lot of ...
Min's user avatar
  • 1