cyberang3l · August 22, 2025 06:33 · Nov 18, 2017 · Nov 18, 2017 · Nov 18, 2017 · Nov 18, 2017
diff --git a/How to setup VirtualGL and TurboVNC on Ubuntu.md b/How to setup VirtualGL and TurboVNC on Ubuntu.md
@@ -35,7 +35,7 @@ sudo dpkg -i virtualgl_*.deb
 service lightdm stop
 /opt/VirtualGL/bin/vglserver_config
 # Go through the questions until the configuration is done.
-service lightdm start
+sudo reboot
 
 # Sanity check for restricted access to 3D X Server
 xauth merge /etc/opt/VirtualGL/vgl_xauth_key

diff --git a/How to setup VirtualGL and TurboVNC on Ubuntu.md b/How to setup VirtualGL and TurboVNC on Ubuntu.md
@@ -30,10 +30,12 @@ sudo dpkg -i virtualgl_*.deb
 * Shutdown the display manager and configure virtualgl server:
 ```
 # login as root
-service lightdm stop # Or 'systemctl stop sddm.service' if you are using KDE
+# If you are using KDE, install lightdm (sudo apt-get install lightdm)
+# otherwise the following configuration steps do not work with SDDM (yet)
+service lightdm stop
 /opt/VirtualGL/bin/vglserver_config
 # Go through the questions until the configuration is done.
-service lightdm start # Or 'systemctl start sddm.service' if you are using KDE
+service lightdm start
 
 # Sanity check for restricted access to 3D X Server
 xauth merge /etc/opt/VirtualGL/vgl_xauth_key
@@ -81,11 +83,9 @@ For the TurboVNC clients, you can find them at the same [address](http://sourcef
 
   * Kill the started VNC server with the command `vncserver -kill :1`. Change the `:1` with the `X DISPLAY` value returned by the `vncserver -list` command earlier.
 
-  * Make sure that the commands `x-window-manager`, `gnome-panel` and `gnome-terminal` exist in your system (if not install them), and append the following three lines at the end of the file `~/.vnc/xstartup.turbovnc`.
+  * Make sure that the commands `xfce4-panel` and `xfce4-session` exist in your system (if not install them), and append the following line at the end of the file `~/.vnc/xstartup.turbovnc`.
   ```
-  x-window-manager &
-  gnome-panel &
-  gnome-terminal &
+  xfce4-session &
   ```
 
   * Now start the vncserver again:

diff --git a/How to setup VirtualGL and TurboVNC on Ubuntu.md b/How to setup VirtualGL and TurboVNC on Ubuntu.md
@@ -30,10 +30,10 @@ sudo dpkg -i virtualgl_*.deb
 * Shutdown the display manager and configure virtualgl server:
 ```
 # login as root
-service lightdm stop # Or systemctl stop sddm.service if you are using KDE
+service lightdm stop # Or 'systemctl stop sddm.service' if you are using KDE
 /opt/VirtualGL/bin/vglserver_config
 # Go through the questions until the configuration is done.
-service lightdm start # Or systemctl start sddm.service if you are using KDE
+service lightdm start # Or 'systemctl start sddm.service' if you are using KDE
 
 # Sanity check for restricted access to 3D X Server
 xauth merge /etc/opt/VirtualGL/vgl_xauth_key
@@ -51,8 +51,8 @@ For the TurboVNC clients, you can find them at the same [address](http://sourcef
 
 ### Use
 
-* Launch the `vncserver` on the server. Possible options:
-  * -opt: enable One Time Password
+* Launch `/opt/TurboVNC/bin/vncserver` on the server. Possible options:
+  * -otp: enable One Time Password
   * -geometry <width>x<height>: specify size of the window
 * Connect using TurboVNC client (`/opt/TurboVNC/bin/vncviewer`). (The screen will appear black but X is launched)
 * In a terminal on the server

diff --git a/How to setup VirtualGL and TurboVNC on Ubuntu.md b/How to setup VirtualGL and TurboVNC on Ubuntu.md
@@ -30,10 +30,10 @@ sudo dpkg -i virtualgl_*.deb
 * Shutdown the display manager and configure virtualgl server:
 ```
 # login as root
-service lightdm stop
+service lightdm stop # Or systemctl stop sddm.service if you are using KDE
 /opt/VirtualGL/bin/vglserver_config
 # Go through the questions until the configuration is done.
-service lightdm start
+service lightdm start # Or systemctl start sddm.service if you are using KDE
 
 # Sanity check for restricted access to 3D X Server
 xauth merge /etc/opt/VirtualGL/vgl_xauth_key

diff --git a/How to setup VirtualGL and TurboVNC on Ubuntu.md b/How to setup VirtualGL and TurboVNC on Ubuntu.md
@@ -65,6 +65,8 @@ For the TurboVNC clients, you can find them at the same [address](http://sourcef
   # Example command
   vglrun glxgears
   ```
+
+### Tips
 
 * To get a window manager up and running (in order to not have the black screen) do the following:
   * With the command `vncserver -list` find the started vnc server. This command will give you an output that looks like this:
@@ -91,8 +93,6 @@ For the TurboVNC clients, you can find them at the same [address](http://sourcef
   /opt/TurboVNC/bin/vncserver
   ```
 
-### Tips
-
 * Export PATH variables:
 ```
 export PATH=/opt/TurboVNC/bin:$PATH

diff --git a/How to setup VirtualGL and TurboVNC on Ubuntu.md b/How to setup VirtualGL and TurboVNC on Ubuntu.md
@@ -66,6 +66,31 @@ For the TurboVNC clients, you can find them at the same [address](http://sourcef
   vglrun glxgears
   ```
 
+* To get a window manager up and running (in order to not have the black screen) do the following:
+  * With the command `vncserver -list` find the started vnc server. This command will give you an output that looks like this:
+  ```
+  $ vncserver -list
+  
+  TurboVNC server sessions:
+  
+  X DISPLAY #     PROCESS ID
+  :1              8972
+  ```
+
+  * Kill the started VNC server with the command `vncserver -kill :1`. Change the `:1` with the `X DISPLAY` value returned by the `vncserver -list` command earlier.
+
+  * Make sure that the commands `x-window-manager`, `gnome-panel` and `gnome-terminal` exist in your system (if not install them), and append the following three lines at the end of the file `~/.vnc/xstartup.turbovnc`.
+  ```
+  x-window-manager &
+  gnome-panel &
+  gnome-terminal &
+  ```
+
+  * Now start the vncserver again:
+  ```
+  /opt/TurboVNC/bin/vncserver
+  ```
+
 ### Tips
 
 * Export PATH variables:

diff --git a/How to setup VirtualGL and TurboVNC on Ubuntu.md b/How to setup VirtualGL and TurboVNC on Ubuntu.md
@@ -54,7 +54,7 @@ For the TurboVNC clients, you can find them at the same [address](http://sourcef
 * Launch the `vncserver` on the server. Possible options:
   * -opt: enable One Time Password
   * -geometry <width>x<height>: specify size of the window
-* Connect using TurboVNC client. (The screen will appear black but X is launched)
+* Connect using TurboVNC client (`/opt/TurboVNC/bin/vncviewer`). (The screen will appear black but X is launched)
 * In a terminal on the server
   * export the DISPLAY variable to the value used by vncserver
   ```

diff --git a/How to setup VirtualGL and TurboVNC on Ubuntu.md b/How to setup VirtualGL and TurboVNC on Ubuntu.md
@@ -1,5 +1,7 @@
 https://github.com/aancel/admin/wiki/VirtualGL-on-Ubuntu
+
 https://virtualgl.org/About/Introduction
+
 https://www.turbovnc.org
 
 ## VirtualGL

diff --git a/How to setup VirtualGL and TurboVNC on Ubuntu.md b/How to setup VirtualGL and TurboVNC on Ubuntu.md
@@ -0,0 +1,72 @@
+https://github.com/aancel/admin/wiki/VirtualGL-on-Ubuntu
+https://virtualgl.org/About/Introduction
+https://www.turbovnc.org
+
+## VirtualGL
+
+When you use ssh with X forwarding, you might have noticed that you cannot execute programs that require 3D acceleration. That's where VirtualGL comes into play.
+
+VirtualGL is an open source toolkit that gives any Unix or Linux remote display software the ability to run OpenGL applications with full 3D hardware acceleration.
+
+With VirtualGL, the OpenGL commands and 3D data are instead redirected to a 3D graphics accelerator (AKA "graphics processing unit" or "GPU") in the application server, and only the rendered 3D images are sent to the client machine. 
+
+### Inititalization
+
+Download the following packages for the server:
+* The .deb package for VirtualGL on [sourceforge](http://sourceforge.net/projects/virtualgl/files/)
+* The .deb package for TurboVNC on [sourceforge](http://sourceforge.net/projects/turbovnc/files/)
+
+### Installation
+
+* Make sure you have installed the proprietary drivers for your graphics card (at least for Nvidia that I have tested this setup).
+
+* Install virtualgl on Ubuntu, by installing the deb file you already downloaded:
+
+```
+sudo dpkg -i virtualgl_*.deb
+```
+* Shutdown the display manager and configure virtualgl server:
+```
+# login as root
+service lightdm stop
+/opt/VirtualGL/bin/vglserver_config
+# Go through the questions until the configuration is done.
+service lightdm start
+
+# Sanity check for restricted access to 3D X Server
+xauth merge /etc/opt/VirtualGL/vgl_xauth_key
+xdpyinfo -display :0
+/opt/VirtualGL/bin/glxinfo -display :0 -c
+# Check that the Graphic card is indeed used and not Mesa
+
+```
+* Install TurboVNC:
+```
+sudo dpkg -i turbovnc_*.deb
+```
+
+For the TurboVNC clients, you can find them at the same [address](http://sourceforge.net/projects/turbovnc/files)
+
+### Use
+
+* Launch the `vncserver` on the server. Possible options:
+  * -opt: enable One Time Password
+  * -geometry <width>x<height>: specify size of the window
+* Connect using TurboVNC client. (The screen will appear black but X is launched)
+* In a terminal on the server
+  * export the DISPLAY variable to the value used by vncserver
+  ```
+  export DISPLAY=:1 # if your vncserver started in DISPLAY :1
+  ```
+  * Launch an X App (with vglrun to have 3D acceleration)
+  ```
+  # Example command
+  vglrun glxgears
+  ```
+
+### Tips
+
+* Export PATH variables:
+```
+export PATH=/opt/TurboVNC/bin:$PATH
+```