Remote desktop

It can sometimes be difficult to set up a working remote desktop solution with linux and our image processing software. The reason is that when no display device is connected OpenCL related components are not loaded by the OS, leading to program startup failure. Below is a guide to set up a working remote desktop connection.

Some things to note about this solution’s limitations:

You should be in the same WI-FI network with your server and client computers. Else you can not connect.
This solution involves the setup of a video dummy. This can create a situation where the computers usual outputs like HDMI/DP won’t output anything. Have a back-up in case of network issues. Back-ups include:
1. Learning how to use linux recovery console to clear the display output disabling configuration
2. Set up a known hotspot the server machine connects with automatically.
3. Have a SSH terminal accessible to the machine to remove the configuration.

Setup

Install NoMachine on both your client and server machine. You can download the rpm package and install it using your preferred installer. One way would be:
```
sudo alien -i package --scripts
```
Set up and validate that you can connect to the machine using NoMachine from your client machine.

Install linux video-dummy package:

sudo apt-get install xserver-xorg-video-dummy

Configure the dummy. The config file needs to be created like so:
```
sudo touch /etc/X11/xorg.conf
sudo nano /etc/X11/xorg.conf
```

Put this configuration into the created file and save it:

Section "Device"
    Identifier  "Configured Video Device"
    Driver      "dummy"
    VideoRam 256000
EndSection

Section "Monitor"
    Identifier  "Configured Monitor"
    HorizSync 5.0 - 1000.0
    VertRefresh 5.0 - 200.0
    ModeLine "1920x1080" 148.50 1920 2448 2492 2640 1080 1084 1089 1125 +Hsync +Vsync
EndSection

Section "Screen"
    Identifier  "Default Screen"
    Monitor     "Configured Monitor"
    Device      "Configured Video Device"
    DefaultDepth 24
    SubSection "Display"
    Depth 24
    Modes "1920x1080" "1280x800" "1024x768" "1920x1080" "1440x900"
    EndSubSection
EndSection

Restart the machine and unplug the display.
Try to connect with NoMachine and try to run config_colors.py.