> Source: [sk185214](https://support.checkpoint.com/results/sk/sk185214)

# sk185214 - Alert LED Stays Red on a Check Point 9100 Appliance with "unable to create thread lcd: alert on/off" error

| Property | Value |
|----------|-------|
| Solution ID | sk185214 |
| Date Created | 2026-08-01 |
| Last Modified | 2026-08-03 |
| Technical Level | General |
| Products | Security Gateway |
| Versions | R82.10, R82 |
| OS | Gaia |
| Platform | 9000 |

## Symptoms

- * The Alert LED remains red, and the */var/log/messages* file repeatedly shows this message:  
  *FrontStageServerThread: unable to create thread lcd: alert on/off*

* The issue persists after reboot.

* No hardware failures appear in CPInfo, HCP, or hardware logs.

* Both power supply units (PSUs) are connected and operating normally.

* 
  The Gaia Clish command `show sysenv fans` shows a fan speed that is close to, or exceeds, the value in the **Maximum** column, or is close to, or below, the value in the **Minimum** column.

* 
  In Gaia Portal, **Maintenance \> Hardware Health** shows the status **High** or **Low** for the corresponding fan sensor.

## Cause

A software condition causes the system to incorrectly identify the fan status as an active hardware alert, even though the hardware components are operating normally.

## Solution

[Contact Check Point Support](https://www.checkpoint.com/support-services/contact-support/) to get a Hotfix for this issue.

A Support Engineer will make sure the Hotfix is compatible with your environment before providing it.  
For faster resolution and verification, collect these files:

1. [CPinfo](https://support.checkpoint.com/results/sk/sk92739) file from the Management Server involved in the case.
2. [CPinfo](https://support.checkpoint.com/results/sk/sk92739) file from the Security Gateway / each Cluster Member / Security Group involved in the case.

**Hotfix installation instructions:**   
Refer to [sk168597 - How to install a Hotfix](https://support.checkpoint.com/results/sk/sk168597).

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