Teacher-side Multi-Display Issue

[sylar1986]

Subject: Screen Broadcasting Shows Black Screen with Blue Circle on Student Clients in Dual Monitor Setup

Hello Veyon Community,

I am experiencing an issue with screen broadcasting in a dual-monitor classroom environment and would appreciate any help.

My Setup:

• Teacher Computer: Running Veyon Teacher.
• Monitors:
  1. A drawing tablet (1080p resolution) used for lecturing and writing. I want to broadcast only this screen to students.
  2. A regular monitor used to run Veyon Master for monitoring student screens during class.

The Problem:
Whenever I start a screen broadcast from the teacher computer, the student clients receive a black screen with a blue loading circle in the center. The broadcast is also extremely laggy and unusable.

Current Workaround:
To make it work, I have to connect the drawing tablet to a separate student computer. I then use the teacher computer to broadcast that specific student's screen to all other students. This method works correctly, but it is not an ideal solution.

My Question:
Is it technically impossible to achieve this (broadcasting one specific screen directly from a dual-monitor teacher computer) within Veyon? I would like to understand if this is a known limitation, a configuration issue, or a potential bug.

Any insights, suggestions, or configuration guidance would be greatly appreciated.

Thank you!