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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Vnc server not working on centos

I was working with VNC server for the first time without any problem I followed this tutorial Now when I want to log I think I forget my password so I retype it many time and Im blocked I get ...
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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 ...
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VNC client only sees a terminal

I have tightvnc server running on my Xubuntu 16.04. I can then run this command : xvnc4viewer 192.168.1.2:5901 I can connect successfully to my machine but the only thing I see is this : I guess ...
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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 ...
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How to install tigervnc client in WSL?

I'm trying to install tigervnc client in Windows subsystem for linux. sudo apt install tigervnc-viewer I get, Reading package lists... Done Building dependency tree Reading state information... ...
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putty disconects after a cople of minutes when using it to make a X tunnel for kvm VNC console

I am using putty from a windows desktop to make an X tunnel so I can access my KVM VMs VNC console (I am using TightVNC) but the putty connection dies after a few minutes. I have other ssh ...
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How do you start tightvncserver with a password file already defined?

This is in Ubuntu 16. I am trying to configure tightvncserver to run without prompting the user to enter a password on its first run after the Vagrant box it resides within gets re-upped from new. I ...
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Prevent VNC “Too many authentication failures” error with nginx rate-limiting?

Is it possible to use Nginx rate-limiting feature to prevent "Too many authentication failures" error with TurboVNC (or another VNC server)? I use TurboVNC (with the VNC password authentification ...
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How can I setup a dual SSH tunnel so that two machines A and B behind firewalls ssh into a central sever such that A can VNC into B?

I need to connect via VNC from my machine A to another machine belonging to my friend B. Both of us have no way to open incoming ports - ISPs do not allow tunneling unless you buy a static IP based ...
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108 views

Open Source Remote Access using VNC and Reverse SSH

I am trying to get a remote access approach (open source) working involving openssh and tightvnc that deals with NAT, that allows someone to remote to my server and then allows me to vnc back to their ...
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How to start vncserver on current ui instance

I've been working on a shared linux box for sometime. My colleague wants to see my screen, if I start vncserver, it will create a new desktop but how do I attach my current desktop to vncserver and ...
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VNC single app from Linux server to Linux, MacOS and Windows clients

For security reasons, our production machines can not have internet access, however, some of them need to be able to browse the web. It's been suggested to me that the best way to accomplish this is ...
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How to install x11vnc in offline mode?

I am trying to install x11vnc on linux machine which doesn't have internet on it.So i won't able to install using sudo apt-get install x11vnc command. Can someone please help me install x11vnc with ...
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Xen/Qemu ignores any mouse/keyboard input

Target: Orange Pi RK3399 Arch: arm64 Xen 4.13 is launched and working Armbian as dom0 Same armbian rootfs copy is used as domU + compiled generic kernel When attaching via VNC, screen is shown ok,...
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160 views

Bind VNC over SSH jump host tunnel to something other than localhost port

I know how to use a jumphost to create an VNC SSH tunnel ssh -A -N -L 5901:targethost:5901 jumphost however, that binds to the localhost of the initiating machine. So if I want to bind to many hosts ...
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Centos7- TigerVNC issue

PID file /home/ssrfs/.vnc/ .... 1.pid not readable (yet?) after start. Trying to set up TigerVNC on Centos7, could see the above issue. Tried removing all the files from the below location but the ...
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Failed to start Remote desktop service (VNC) on centos7

During start of VNC, there is an error. I tried a lot to solve it but didn't get any solution. If someone knows how to resolve it please share with me. There is also an error when I want to see the ...
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which means double 2 points 192.168.1.2::3 in a vnc connection

install real vnc to make connections to a windows server but at the time of accessing me it appears that to access I must approach it with the route 192.168.1.2::3 I understand that : after the IP ...
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VNC server starting but icons are not showing in RHEL 4

Version I am using is vnc-server-4.0-11.el4 and OS - RHEL 4 vncext: VNC extension running! vncext: Listening for VNC connections on port 5903 vncext: Listening for HTTP connections on port 5803 ...
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VNC sever on Debian 10 will NOT start Gnome properly (Black/grey screen) if run automatically (on startup via cron or service, etc)

UPDATE: It appears the problem is my Nvidia driver. Here I have a Debian 10 server with TigerVNC. I switched from xfce to Gnome as the VNC server's DM just recently, and whenever I try to start it ...
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VNCserver get mapping between server port and display

I am running a VNC service on a Linux host (if it is relevant, this is TigerVNC on Ubuntu 18). VNC is configured to run on-demand in multi-user mode i.e. it is invoked via: /usr/bin/Xvnc -inetd -...
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Giving VNC access to screen shared via Xvnc

Let's say I want to share a screen with someone. I want this person to be able to control one application in this screen (the application is started with my user). To do that I am doing the ...
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239 views

SSH Port Forwarding not working

I have two CentOS 7 servers (Hypervisor and Relay for this scenario) . I wish to connect to a VNC port on Hypervisor which is behind a firewall by using Relay with is a server with SSH open to ...
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VNC ISPSystem glitches on high resolution

I am trying to perform an installation of Android x86 8.1 RC2 on VPS through the means of ISP panel, via VNC. Here is what I see in any VNC client (noVNC, VNC Viewer): Such a bug only appears after ...
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221 views

x11vnc fast to send user input, very slow to respond to remove screen change

I run x11vnc on a Linux mint 19 box just fine, and connect to it over the WAN using the TightVNC client on Windows just fine. Works fabulously. So I thought to try it on my LAN, and I run x11vnc on a ...
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x11vnc stunnel: sslv3 alert bad certificate

I am trying to connect to a running x11vnc server with SSL enabled. I am using stunnel to handle the encryption. This is how I start the server: $ x11vnc -stunnel "TMP" -xkb -noxrecord -noxfixes -...
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tigerVNC and XRDP are causing android studio GUI windows to be whited out

So, I recently deployed an Appium server on a physical dl320 so we can automate our mobile app development. I am using an older version of KVM that only allows one console connection at a time. This ...
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How to set keyboard layout with a VNC client to KVM (libvirt)

I have both kvm guests and hosts installed on a Debian 9.9 with kde on an AMD Machine qemu-kvm 1:2.8+dfsg-6+deb9u7 amd64 When connecting with a virt-viewer, my keyboard ...
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281 views

Screen sharing with x11vnc + noVNC

Context & Goal I have a small embedded device running Linux armv71. My goal is to remotely access the screen through a web browser with a mobile device. I have x11vnc running which I thought ...
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467 views

x11vnc Web Browser Access

The Problem I have a Linux embedded device and I'm trying to share the screen to access it remotely through a web browser using x11vnc. I've searched through multiple posts that explain how to do this ...
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457 views

Unable to use VNC when connected to OpenVPN

When I try to VNC to a particular machine #1 (192.168.1.221) from within the network I am able to connect to it without issue. When I try to connect from outside the network from my OpenVPN VPN I am ...
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625 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 ...
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458 views

What security weekness(es) does my vino VNC server have? [closed]

I installed vino VNC server on Lubuntu 18.04, and configured and started my vino server according to https://askubuntu.com/a/530196/1471: $ export DISPLAY=:0 $ gsettings set org.gnome.Vino enabled ...
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Shift+Insert key inserts 0 instead doing paste in VNC server

While working with linux machines/terminal, I always use shift+Insert to paste the clip board content. I am using vnc viewer app to login to my VNC server but shift+Insert isn't working in the Linux ...
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57 views

How do I secure my VNC for access via iOS?

I am running Ubuntu 18.04 on Google Compute Engine, the instance is running VNC which it is up and running using : vncserver -SecurityTypes=VeNCrypt,TLSVnc But when I try to use VNC Viewer on iOS, ...
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2k views

Why does VirtualGL raise a *Could not open display :0* error after host reboot

I am using vncserver to connect to a CentOS7 machine in the network. In order to make use of 3D graphics accelerations I am using VirtualGL. So any OpenGL program needs to be launched with vglrun to ...
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155 views

TightVNC Server sometimes fail to start on RHEL7.4

I've a RHEL 7.4 box with TightVNC service enabled on boot and sometimes the service fails to start with a PAM permission denied error: systemd[2027]: pam_nologin(login:account): conversation failed ...
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221 views

Tight VNC on Windows Server16

I am no means Windows fella, but due to circumstances have to configure sikuli test suite on Windows Server 2016. The problem I have is that i have installed Tight VNC on it, and when connect to the ...
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208 views

How can I install VNC Server on Red Hat 7.2 that is not connected to the internet?

I have a 64-bit Red Hat 7.2 server that is isolated from the Internet. I am able to SSH to it easily, as well as transfer files using USB. I downloaded VNC-Server-5.0.5-Linux-x64.rpm and tried to ...
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207 views

Unable to login to Suse 12 SP1 vnc server as root, works as normal user

I have a Suse 12 SP1 server. I'm not able to login to the vnc service as root, however it works as a normal user. Log entries below are from root attempt. Timestamp and server name removed for brevity....
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239 views

Lightweight way to graphically connect to guest VMs on “headless” hypervisor

Running a Fedora Server 28 hypervisor (QEMU/KVM with libvirt tools) with Windows- and Fedora-based guest VMs. Normally, the hypervisor runs headless with minimal packages installed, and guest VMs are ...
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94 views

Wrong keymap in KVM guest

I connect to a KVM host (CentOS 7) by VNC. The keymap on the host is de-ch. While connected to the host i open a guest server (any OS) by the virt-manager and try to login to the guest, but the keymap ...
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Unable to start VNC server: configured resource limit was exceeded

VNC service was working fine until a recent power outage. When I try to run systemctl start vncserver@:1.service it gives a message as Job for vncserver@:1.service failed because a configured ...
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1k views

X11VNC dont work properly with gdm3

Im using X11VNC service (installed from packages) and debian 9 with gdm3. I created systemd file: root@PCA55:/home/suser# cat /lib/systemd/system/x11vnc.service [Unit] Description=VNC Requires=...
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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 ...
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15k views

VNC viewer shows black screen for one user and normal for the other

I installed TigerVNC on a CentOS 7 and configured its service for two users (user1 and user2). It worked perfectly until recently. When I try to connect with VNC Viewer with user1 it shows just a ...
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762 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 ...
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Remote desktop connection (vnc) keeps working when restarting iis?

maby it's a simple question. I would like to reset iis on a windows 2003 server via VNC. Doing so would i loose the vnc contact with server during the process? Thank you
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2k views

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....
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1k views

Trying to get TigerVncServer and Lightdm to work

I'm trying to get Lightdm to start Tigervnc when a user connects, on Ubuntu 16.04 Here is the /etc/lightdm/lightdm.conf I am using:- [XDMCPServer] enabled=true port=177 [VNCServer] enabled=true ...

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