The Xiaomi Home Assistant is a versatile device that can control various smart home appliances, including lights. However, some users have reported issues with controlling the gateway light. This article aims to provide a comprehensive guide on how to resolve the gateway light control problem. The issue is described as the gateway light being unable to be turned on or off, despite the device being set to the 'on' state. To reproduce the problem, users can follow these steps: ensure their device is a lumi.gateway.v3 manufactured by Aqara, and the entity is set to 'light.lumi_cn_xxxxxxx_v3_s_4'. The expected behavior is that the gateway light should be able to be turned on and off. The problem was first reported on 2025.1.8 at 19:12:25. The Home Assistant logs and additional context are currently not available. The Home Assistant Core version is 2025.1.0, and the Operation System version is 13.0. The Xiaomi Home Integration version is v0.1.4. To resolve the issue, users can try restarting their device, checking the device's settings, and ensuring that the device is properly connected to the network. If the problem persists, users can try updating their device's software or seeking further assistance from the manufacturer's support team. In conclusion, the gateway light control issue can be a frustrating problem for Xiaomi Home Assistant users. However, by following the steps outlined in this article, users should be able to resolve the issue and enjoy seamless control over their smart home appliances.