---
title: "Screen controller doesn't work"
slug: "screen-controller-doesnt-work"
updated: 2025-07-11T09:57:08Z
published: 2025-07-11T09:57:08Z
canonical: "docs.grassfish.com/screen-controller-doesnt-work"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.grassfish.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Screen controller doesn't work

## Symptoms

Screen controller doesn’t work as intended with RS-232. Your screen controller configuration is incorrect.

## Resolution

The following steps can help you identify and solve the issue.

### Check the configuration

1. To ensure that you’ve added the COM port, go to the player configuration or the configuration group:
  - For an individual player, go to **Channels > Location**. Double-click on your player and select **Edit** next to **Configuration** in the **Edit player** window.
  - For a configuration group, go to **Administration > Player > Configuration groups** and double-click on the configuration group.
2. In the **Edit configuration group** window, ensure that **Display extended modules** is selected.
3. Under **Modules**, select **ScreenController > Screen**.
4. Ensure that the **Device Name of monitor 1** matches the name of your COM port.

![](https://cdn.document360.io/e2b87f73-d9f5-43cb-8182-2641762664fd/Images/Documentation/com_win.png?sv=2026-02-06&spr=https&st=2026-11-06T19%3A12%3A15Z&se=2026-11-06T20%3A12%3A15Z&sr=c&sp=r&sig=OIalw4BkWoJ8xe49ZrgGrmRwHl7bBdZ2N8DDHV4yOEE%3D)

### Check the hardware

In addition to the signal cable, usually an HDMI cable, RS-232 control also requires a control cable that must be connected to the RS-232 interface.

Ensure that this cable is present, correctly connected, and compatible with your system. Otherwise, the IXM One configuration can’t take effect.