Questions tagged [vnc]

Virtual Network Computing (VNC) is a graphical desktop sharing system that can be used to control a computer remotely.

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VNC Server - securely forwards to the localhost connection for VNC

I followed this link https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-18-04 and I created the VNC server in my remote VM, started the VNC server in it and ...
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VNC Session user

If I enable x11vnc on my system, then is there any way to know who (which IP) have taken the remote session, if any ?
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Changing the dektop manager for one user through VNC

For one of the user, I want to set the default desktop manager to something other than Gnome which is the default one in Centos-7. The user connects through vncviewer. I see a guide here, however, I ...
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Tightvnc server

I have a VM in which I installed the VNC server (TightVNC) using the link : https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-18-04 It is installed ...
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2k views

No VNC extension on display on VNC desktop

I have started vncserver or remote instance with the vncserver command and now is able to connect to it with VNC client. Unfortunately, I can't start vncconfig due to error No VNC extension on ...
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SSH and VNC security issue question

My Centos 7.5 server in the past few days got thousands of incoming SSH login attempts and today I couldn't log in to my VNC clients because it just said "Too many security failures". So would like to ...
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1answer
710 views

VNC Server immediately crashes

So, I recently installed the tigervnc package on Arch Linux (uname -r 4.18.10-arch1-1-ARCH). I'm trying to get the VNC server to run trough SSH tunnels, so I'm starting the server on localhost only ...
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1answer
415 views

No module named 'gi' when running ibus-setup

I am trying to run ibus-setup and getting the following $ ibus-setup Traceback (most recent call last): File "/usr/share/ibus/setup/main.py", line 31, in <module> from gi.repository ...
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1answer
1k views

Connect directly to Xvnc started by xrdp

There're color artifacts when connecting from Windows remote desktop client to Xrdp on a CentOS box. I want to check whether the underlying Xvnc will have same artifacts. Xvnc is running: LISTEN ...
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67 views

Sending mod key over VNC

I'm running dwm on my local machine and I'm trying to control a machine running xmonad over VNC. They both use the same mod key because they're both my machines. How can I send the mod key to the ...
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1answer
22 views

VNC server configuration

what's the role of percentage in VNC configuration? ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :' ExecStart=/usr/sbin/runuser -l <USER> -c "/usr/bin/...
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1answer
18 views

Unable to connect to vncserver

Just trying to figure out the problem with vncserver here. It looks like it is only listening to local host and hence keeps giving this message No matching security types when I try to access this ...
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1answer
150 views

Scientific Linux / CentOS Screen sharing

we have Scientific Linux 7 PCs. At one of them I cannot activate the "screen sharing" under "Settings"- "Sharing". I tried to disable / enable the "sharing". I can activate and deactivate the ssh but ...
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336 views

How to setup keyboard switching in Tigervnc via Remmina Remote Desktop

I am running VNC server on a headless Ubuntu box with tigervncserver. ~/.vnc/config is all commented and has the following examples: # securitytypes=vncauth,tlsvnc # desktop=sandbox # geometry=...
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1answer
51 views

How can I monitor, record and check about the ports on my LUbuntu having been scanned or connected to by other computers?

I have installed some servers on LUbuntu 18.04, such as postgresql server, mysql server, vino server, and I may have installed and run some servers without knowing it. I rarely intend them to be ...
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1answer
68 views

Expose VNC port when building via VMWare Workstation

I am performing a remote headless build on a Ubuntu 16.04.05 server using packer. When the build starts, I get the informative message vmware-iso: The VM will be run headless, without a GUI. If you ...
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217 views

unable to display turboVNC

I'm trying to use turboVNC for remote application. I have install virtualGL package (virtualgl32_2.6_amd64.deb) and then turboVNC (turbovnc_2.1.90_amd64.deb). I'm using Ubuntu 16.04 LTS Processor :...
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1answer
682 views

VNC clipboard not working

If I uncomment the two lines in my ~/.vnc/xstartup that enable 'normal' desktop environment for VNC, the vncconfig -iconic & command is ignored: #!/bin/sh # Uncomment the following two lines for ...
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1answer
184 views

How to install vncserver with a password?

I am trying to install tigervnc-server from a bash script with a password under Centos 6. I want to do this because I want to automate VPS installations. Does anybody know how to do this? Tried adding ...
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1answer
275 views

Maximized window bigger than display on CentOS 7.5 with vncserver

im running into a problem on a CentOS 7.5 machine with the default vncserver (TigerVNC). Everything is working fine, except one visual flaw: the maximized size of the display is unequal to the actual ...
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1answer
577 views

vncserver blank display — debian 9 guest VM w/ubuntu 16 host

Overview My goal is to setup VNC access to a Debian 9.5 VM guest built with virt-manager on Ubuntu 16.04 LTS (with desktop environment). I have configured /etc/vnc/xstartup to use gnome-session (...
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194 views

Pipe VNC viewer output to /dev device

Using VNCTiger as a VNC viewer, how can I pipe/forward (correct terminology?) the output to one of the /dev devices like video0? At the moment I use a basic vncviewer command to get the output, as ...
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1answer
254 views

Can't change keyboard layout inside vncserver

How to change keyboard layout inside (tiger) vncserver? I am running startxfce4 inside it. I can show country flag in the corner and switch layout by clicking on it, but I can't switch by keyboard ...
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1k views

Black Screen on VNC (SUSE Linux)

I used to be able to connect to my server using a VNC Client. However, now the window will open but is (and stays) black. I can SSH to my server. I restarted vncserver with no effect. I used cat on ...
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4answers
379 views

Best practice DNS (resolving IP to hostname in LAN)?

Recently I've created my own thin client operating system (Xubuntu based, so basically Linux yes) that will run across our thin clients. Currently I'm testing the OS in my test environment, but I've ...
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604 views

Linux Remote Desktop over the internet, Remmina or other free clients?

I'm trying unsuccessfully to remote desktop from a linux mint 18.3 to another linux mint computer over the internet, without messing with the routers settings or manually opening ports, something ...
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54 views

How can I enable VNC server over ssh after machine just booted?

Suppose I remotely start my Solus linux machine with Wake-On-Lan. Then I would like to connect to it using VNC, but seems like VNC server is not running yet. After machine just booted, there is no ...
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1answer
625 views

Root launching vncserver as different user

I have a system I'm administering that is shared by many users, each having a separate VNC session. So far they've been launching their own VNC servers from SSH, but I'd rather be the only one able to ...
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1answer
667 views

Custom resolution on Ubuntu server with XCFE and TightVNC

So I followed this guide in order to be able to remotely connect to a new VPS (running Ubuntu 18.04 LTS) and have a GUI since I need to perform certain actions that require a visual interface. Anyway,...
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1answer
1k views

Unable to Connect to VNC Server Using SSH Tunnel

I have a Linux server running xtightvnc on Ubuntu 18.04. Using my laptop, I am able to establish an SSH tunnel connection using PuTTY on Windows and establish a connection to vnc through localhost:...
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673 views

vncserver exit status 98

I can not get vncserver to start after following How To Install and Configure VNC Remote Access for the GNOME Desktop on CentOS 7. I get to sudo systemctl restart vncserver@:4.service and receive ...
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1answer
480 views

error starting tigervnc-server code 98 - fedora27

after installing, creating user, editing etc, when I try to start service I get (after deleting .Xfiles from tmp, @SivaPrasath suggestion) systemctl start vncserver@:1.service Job for vncserver@:1....
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1answer
327 views

Change password on Vinagre

How does one change the VNC password that vinagre remembers? It just keeps failing and says "Authentication failed (password check failed)", but never asks for another password.
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2answers
132 views

How to save the vncserver state?

I am happily using vncserver but sometimes it dies, which is a pain. Is it possible to save the state of vncserver so that I can at least have something to resume if it dies?
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1answer
659 views

VNC - simple test with vnc (x11vnc and ssvnc)

I am trying to set up a vnc connection between 2 computers, but am having trouble so far. In order to understand the concept, I am now simply trying to start a vnc server (using x11vnc) and connect ...
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1answer
121 views

CLI configuration for tigervnc-server

I have a few machines that I have to install tigervnc-server on. After I install the package I have to run vncserver and enter the password for the VNC user. Can I provide the password with a ...
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1answer
2k views

VNC seems to break CLIPBOARD and PRIMARY

I'm using VNC Viewer 5.3.2 (r19179) x64 on a Windows 10 machine to connect to a VNC Server (Virtual Mode) 5.3.2 (r19476) x64 running on SUSE Linux Enterprise Server 11. My issue is concerning copy and ...
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0answers
351 views

Authenticate VNC connections with Local Users

We have some CentOS 7.4 machines that have been configured to authenticate with a local OpenDirectory (macOS server) machine. We want to use user authentication to allow VNC access instead of using ...
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1answer
660 views

Use VNC to SSH tunnel through bastion host to graphical OS (Red Hat)

Here's the scenario: I have 4 hosts. Client/localhost AWS bastion host (port 22 only) EC2 Instance with graphical desktop (private subnet) EC2 Instance (no graphical) with Docker running a WebLogic ...
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1answer
206 views

Export Display to two vnc clients

I am trying to display my vnc server on two vnc clients but can't seem to figure how to export display simultaneously to two vnc clients. Can I use the export command to export display to two clients?...
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1answer
521 views

X Window / VNC session recording

While I am aware of rfbproxy and ffmpeg's x11grab capability, all the examples online seem to be aimed at users wanting to record their own sessions. My usage model is to maintain a (reasonably) ...
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1answer
1k views

View 1 monitor in VNC session?

I'm running Linux Mint 18 with x11vnc and the Nvidia drivers. My system is configured for one large desktop which spans 3 monitors (it was the default configuration). When I create a VNC session ...
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1answer
967 views

How do to bind x11vnc to localhost only and tunnel through SSH?

There are many good answers on how to tunnel VNC traffic using SSH. When doing something like... ssh user@host -L 5900:localhost:5900 x11vnc ...you can connect to the SSH tunnel on localhost:5900 (...
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1answer
122 views

Working with a remote GUI application [closed]

I'm a not so experienced user of Linux systems and here's the thing I'm trying to achieve: I want to run a graphical application on a remote Linux (Ubuntu in particular) server, with an ability to ...
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2answers
643 views

Cannot start vncserver: bind: Cannot assign requested address (99)

I use vnc over ssh with my Raspberry Pi. It has worked fine for a while, but after following these instructions to set up openvpn on my Raspberry Pi running Raspbian OS. I found that I can no longer ...
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0answers
2k views

Xstartup file for Gnome 3 session on Ubuntu 16.04

Is it possible to have a TurboVNC session, or indeed and vnc server session, to a Ubuntu 16.04 system display a desktop the same as what one gets when logging in locally, with the Activities bar and ...
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1answer
115 views

Same process has different environmental variables in /proc/pid/environ when seen from different sessions. Why?

I was checking environmental variables of bash process of an xterm that was started inside vnc session. If I check the environmental variables from the bash session itself by running env or cat /proc/...
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2answers
988 views

TigerVNC installation on CentOS 7 (as in Red Hat System Administrator's Guide )

I want to install TigerVNC on my freshly installed CentOS 7 server, version centos-release-7-4.1708.el7.centos.x86_64. So besides other tutorials I've tried already, I followed the Red Hat guide. ...
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1answer
3k views

xrdp doesn't work when started as a service, but works when started manually

Until recently, I had a working xrdp on my CentOS 7.4 workstation. I was able to connect from a Windows machine without any glitches. Then something changed (after a "yum update", maybe?), and I'm now ...
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0answers
827 views

Capturing remote VNC to x264 without storing first

I'm looking for a way to capture a remote VNC display into a local h.264 recording without having to record first in another format and then convert it after the fact. I'd see that it's is possible to ...