Uses i3lock to display different image on each monitor

cd ~
git clone https://github.com/ginkooo/i3lock-multiimage
cd i3lock-multiimage
python3 -m pip install --user -r requirements

change FOLDER in config.py to path of your script if you want to run it without doing next steps

Run

sudo ./setup.py

change FOLDER to new location

Then just lock the screen by typing

lock

I recommend binding key combination to lock in your shortcut manager

You can change displayed images by replacing pngs in images folder

To achieve this, you must name images in a right alphabetical order, and match the order with xrandr output. For example:

You have three images and three monitors.

Images are:

a.png, b.png, c.png

Output from xrandr is like:

HDMI-0 connected
[...]
VGA-0 connected
[...]
HDMI-1 connected
[...]

So HDMI-0 is first, VGA-0 is second and HDMI-1 is third.

a.png would be on HDMI-0,

b.png would be on VGA-0,

c.png would be on HDMI-1

Python3+

i3lock (https://github.com/i3/i3lock)

Pillow library for Python3

• Display image on inline-positioned monitors (same height)
• Not inline aligned monitors, rotated monitors etc.

• Image count different than monitor count

• Reuse already generated image
• Optional "Type in your password"