Here's a script to do so:
```
import numpy as np
from PIL import Image

def generate_background():
    # Generate a random array of RGB values
    rgb = np.random.randint(0, 256, size=(1080, 1920, 3), dtype=np.uint8)
    
    # Create an image from the array
    img = Image.fromarray(rgb)
    
    # Save the image to disk
    img.save("background.jpg")
    
    # Set the image as your desktop background
    # Replace "feh" with your preferred tool for setting the desktop background
    # on your Linux system
    !feh --bg-fill background.jpg

if __name__ == "__main__":
    generate_background()

```
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence