Questions tagged [vnc]

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

156 questions with no upvoted or accepted answers
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13
votes
1answer
1k views

Creating a virtual X11 output with Nvidia driver

I'm attempting to follow this guide to extend the desktop on computer A to computer B by creating a virtual output on computer A and using vnc to display the virtual output on computer B. The ...
4
votes
2answers
335 views

Problem with screencapture of flash animation in chromium-browser

I'm using chromium-browser and a vnc4 server to do some thumbnailing of flash resources. This is the version: $ chromium-browser --version Using PPAPI flash. Chromium 48.0.2564.116 Ubuntu 14.04 ...
4
votes
1answer
133 views

Make one VNC server appear as two displays in RHEL

I have a VNC server running in virtual mode in RHEL and I am viewing it on a PC which has two screens. I can make the server use both of my screens by setting the resolution large enough: xrandr -s ...
4
votes
1answer
3k views

kill or kick all clients from a running vncserver without restarting the server

I encounter quite often the problem, that I want to kick all connected clients from a running vncserver. Even better would be to be able to kick / kill even certain clients. With netstat -tupa | grep ...
3
votes
0answers
34 views

Do I need to log into the remote desktop environment first before connecting to it by xpra or VNC?

I connect to a remote Lubuntu PC by: xpra shadow ssh:t@olive:0 When I log out of the remote Lubuntu, the connection of xpra is lost. When I try to connect to a remote Lubuntu which I haven't ...
3
votes
0answers
169 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 ...
3
votes
1answer
10k views

How can I start a VNC server session and immediately land up in KDE?

This is the content of my ~/.vnc/xstartup file: #!/bin/sh # Uncomment the following two lines for normal desktop: unset SESSION_MANAGER exec /etc/X11/xinit/xinitrc [ -x /etc/vnc/xstartup ] && ...
3
votes
1answer
3k views

Cannot connect to xrdp on Fedora 25 from windows

With a basic install, per: dnf install -y xrdp openssl req -x509 -newkey rsa:2048 -nodes -keyout key.pem -out cert.pem -days 365 mv cert.pem /etc/xrdp/ mv key.pem /etc/xrdp/ systemctl start xrdp ...
3
votes
1answer
2k views

What commands are needed in the '~/.vnc/xstartup' file to run KDE Plasma 5 in VNC?

I am trying to run KDE 5 in a VNC session and although I get application windows like konsole, kate etc the shell I need for the Start Menus, taskbar, desktop background etc is not present. This is my ...
3
votes
0answers
711 views

Can't get rid of x11vnc output

I'm on an Ubuntu system which has a touchscreen set up on display :0. I wanted to be able to control this touchscreen remotely from Windows, so I set up x11vnc. It works great. But here's the setup: ...
3
votes
0answers
600 views

Where does Linux vncserver (Xvnc) get the list of geometry possiblities

I have looked through through parts of the code, and the places obvious to me, but I have not found the place that I can add legal geometries for a vncserver that I can set using xrandr. I have tried ...
3
votes
1answer
652 views

How come I can login to another person's session over vnc just by changing the port number?

I have a user account on a server administered by someone else. I don't have root access. The server is CentOS 7. I couldn't connect over vnc on the usual port I use, so I ssh'd into the server and ...
3
votes
0answers
616 views

Using VNC without unlocking the lock screen locally

Currently I use VNC to connect to a virtual desktop on my Fedora workstation, which for the most part works fine. But ideally I'd like to connect to my active session on the workstation and access ...
3
votes
0answers
720 views

Why VNC performance seems to have dropped over the years?

I've been using VNC since around 2000 (even earlier), back then I used a 19k cellular modem to connect to my desktop. Lately I've been connecting to my Ubuntu desktop from my Android phone. It seems ...
3
votes
1answer
966 views

Logged into ubuntu via VNC. Windows key seems stuck

I have an ubuntu server running vnc4server and gnome-session. When i log in remotely using VNC, it appears that the windows key is stuck. This occurs with multiple VNC clients (ultraVNC/realVNC on ...
3
votes
1answer
463 views

How frequently are updates sent to a VNC client?

I am trying to understand how the VNC mechanism works. The RFB protocol 3.8 specifications say : The update protocol is demand-driven by the client. That is, an update is only sent from the ...
3
votes
0answers
1k views

Using gdm to manage xdmcp authentication over VNC

I've followed a few guides in order to enable XDMCP over VNC, however the end result is an ugly, if functional, default X login screen. It is not utilizing gdm for the authentication process, and I ...
2
votes
0answers
17 views

2 x11vnc servers with separate displays showing different windows, overlapping

I am running a python (includes pygame) program on debian-jessie system with x11vnc and xvfb installed. I want to display terminal window and pygame window separately using xvfb and x11vnc. My ...
2
votes
0answers
18 views

VNC Black screen using GNOME

I was working in a Oracle Linux server through XRDP with Xvnc(TigerVNC) and the server crash. After the crash I only can access the server through XRDP with Xorg, but not with Xvnc, when I try to ...
2
votes
0answers
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 ...
2
votes
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 ...
2
votes
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 ...
2
votes
0answers
623 views

VNC to a linux desktop in HiDPI mode won't scale properly

I have a linux mint Cinnamon desktop running in HiDPI. When I try to connect to it with a VNC client from my macbook (retina/hidpi display), the desktop shows up about 4x too big. I tried with mac's ...
2
votes
0answers
156 views

Access a running MATLAB instance from command line

I am running a few instances of MATLAB on a server via an SSH tunnel and a VNC server. I started the instances using the desktop (via VNC) but something went wrong and now the desktop is completely ...
2
votes
1answer
3k views

VNC - Too many authentication failures

I've been trying to Google, but all of the issues refers connection from PC to remote VNC server. So. I have an issue with VNC communication from Android to Linux. I have installed a TightVNC Server ...
2
votes
1answer
548 views

Connect with Remote Desktop viewer after reboot

I have a computer with Fedora 24 that I often use to control another remote comptuer with Fedora 23. I can use vinagre to do this, provided that I log in at least once with my user in my remote ...
2
votes
0answers
731 views

Not Able to run simple Java Swing Program on Raspbian on Raspberry Pi 2 Headless connected using tight VNC

I am using a Raspberry Pi 2 model with Debian as the OS. I tried a simple java swing program that opens a JFrame on it, and it worked fine. Later, I wanted to use my Pi headlessly i.e. without ...
2
votes
0answers
3k views

No session for PID xxx (lxpolkit)

I'm trying to use LXDE on debian sid, launching it by adding startlxde to the end of ~/.vnc/xstartup. Using tightvncserver as VNC server: tightvncserver -alwaysshared :1 However, when I log in from ...
2
votes
1answer
7k views

Getting Tightvnc Server Working on Debian 8 (with KDE)

I have done much research and attempted fixes on this issue, mostly involving tweaking the xstartup file. I've tried alternative VNC clients (UltraVNC and TightVNC) from a Windows 7 computer, with the ...
2
votes
0answers
113 views

Isolating all audio for a specific user account with Pulseaudio

I've done some Googling on this subject, and looked around on Stack Exchange, but I haven't yet found a question canonically similar to mine. If this is the wrong section of Stack Exchange to ask this ...
2
votes
1answer
816 views

Booting into VNCViewer on a Raspberry Pi.

Here's my problem. I'm new to Linux scripting and RasPi and I am beating my head against the wall on an issue. I want to use this raspi for displaying a vm using VNC. I got VNC installed. Created a ....
2
votes
0answers
3k views

Can't add keyboard layout on Debian remote desktop

I want to enable Russian keyboard layout on a Debian remote desktop (connected with Xvnc). dpkg-reconfigure keyboard-configuration changed /etc/default/keyboard as desired: # KEYBOARD CONFIGURATION ...
2
votes
0answers
309 views

xtightvnc through ssh gateway — connection refused

Following setup: homepc -> gateway -> workpc workpc:~$ tightvncserver :12 homepc:~$ ssh -N gatewayuser@gateway -L 1212:workpc:5912 Now I try to connect via homepc:~$ xtightvncviewer localhost:1212 ...
2
votes
2answers
1k views

VNC - Arch - Gnome; I can't type in the password on the login screen because it is cleared every second

I have an Arch linux box that is almost running perfectly but when i connect to the vncserver and the sreensaver turns the screen black, i am forced to reenter the password on the loginscreen of gnome ...
2
votes
0answers
137 views

How to set up remote graphical sessions on CentOs?

Trying to set up a Centos 6 server configuration where we can automate the running of an application that uses Selenium. In this case, ideally, we should be able to: Create a graphical session (...
2
votes
1answer
547 views

Xtightvnc: Ubuntu gnome-session-fallback: Fonts problem

I'm running a tightvnc server on Ubuntu 11.04 with a Gnome fallback session. Things seem to work fine except that when I try launching an application that needs xfonts-100dpi. All application menus ...
2
votes
0answers
136 views

Alternate screensaver settings on different X instances

On my desktop system, I run two instances of X-- one is associated with the physical screen, one is associated with a virtual screen (a la vncserver). I use the physical one to do things related to ...
2
votes
0answers
386 views

System beep not working in TigerVNC

I just upgraded my Gentoo Linux computer (where I'm running Xvnc from TigerVNC 1.0.90 (1.1 beta 1) compiled myself against xorg-server 1.9.5), and I'm no longer getting any bell sounds, just silence. ...
1
vote
0answers
41 views

Access Ubuntu desktop remotely from Mac OS

I would like to be able to access my Ubuntu 18.04 desktop (not just terminal) from Mac OS (Mojave), and have tried a couple solutions, with less-then-desirable results: Installing google chrome ...
1
vote
1answer
320 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 ...
1
vote
0answers
305 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=...
1
vote
1answer
247 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 ...
1
vote
0answers
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 ...
1
vote
0answers
48 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 ...
1
vote
0answers
313 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 ...
1
vote
0answers
756 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 ...
1
vote
0answers
392 views

Launching Xvnc server with xinetd, wrapped with vglrun

I'm trying to set up remote login for the CentOS 7 machine in our office, so that users can connect using TigerVNC from windows clients and reach a gdm login screen. Previously, I followed these ...
1
vote
0answers
1k views

VNC Server failed to start on CentOS 7

VNC Server suddenly stopped working on my VM after working fine without any issues. I cannot seem to start the VNC service. This is the output for the status of the VNC service systemctl -l ...
1
vote
0answers
42 views

Xvnc multiscreen setup

I have an old application that uses hardcoded screen names in a multimonitor setup. (8 bit indexed color). it if course does not recognize RandR or Xinemra, but uses both rhost:0.0 and rhost:0.1 for ...
1
vote
0answers
30 views

TightVNC logs 2nd user on as 1st user to Oracle Linux (RHEL)

My coworker and I are working on an Oracle Linux VPS. We use TightVNC to logon to the desktop. I'm usually logged in first on my own port/session (5901) and when he connects to his (5902) using his ...