How to increase the keyboard illumination time on Xiaomi laptop

Owners of Xiaomi Mi Notebook and RedmiBook notebooks often face the same annoying feature: the keyboard light goes out after a few seconds of inactivity, even if the laptop is connected to the network. This behavior is the default logic of energy saving, but for many users it becomes an obstacle when working at night. Constant pressing the keys to activate the light distracts from work and reduces the comfort of using the device.

Fortunately, there are several proven ways to get around this limitation. Unlike gaming laptops, where light control is brought to a separate application, Xiaomi ultrabooks often have settings hidden deep in the system or require interaction with the BIOS. In this article, we will discuss all available methods, from simple switches to the use of specialized software that allows you to flexibly configure timeout.

Before you start to do complex manipulations, it's important to understand that the backlight behavior is directly related to the power mode of your device. The system tries to save battery power by turning off secondary light sources, so changing the power settings is often the key to solving the problem. Let's look at the basic methods of setting up in more detail.

Control via functional keys and Xiaomi Settings

The most obvious but often ignored way is to use a combination of hotkeys. On most Xiaomi and RedmiBook laptops, the F10 key (sometimes combined with Fn) controls the backlight, and the pressing of this button cyclically switches the modes of "Switched Off," "Silent Light," "Bright Light," but switching the brightness is not enough to affect the backlight time.

The central element of the laptop's settings management is the Xiaomi Settings app (or Mi Support depending on the region and the firmware version), which is where the software interface that regulates the behavior of the hardware is located. If you can't find this app in the Start menu, it's probably not installed or hidden, in which case it needs to be downloaded from the official support site or through the built-in app store.

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If the Xiaomi Settings app doesn’t start, try running it on behalf of the administrator via the shortcut context menu.

Inside the app, you'll find the peripheral or keyboard section, and you'll find a slider or drop-down list that regulates timeout. Note that on some models, like the Mi Notebook Pro of the early years, the software time limit can be hard-wired and not have an adjustment slider, which requires a move to deeper customization methods.

Setting up the power supply scheme Windows

Windows has its own power-saving controls that may conflict with the laptop manufacturer's settings. To increase the lighting time, you need to make changes to the active power circuit, which is especially true if the laptop is battery-powered, because this is the mode in which the system is most aggressive in saving energy.

To start, open the control panel. Press Win + R, enter control and press Enter. In the window that opens, go to Power. If you have Saving Energy mode, the system will force the backlight to go faster. Switch to High Performance or Balanced, and then click on Power Scheme Setup.

In the window that opens, click "Change additional power settings." You'll see a list of hidden settings. You'll need to find a branch associated with the display or backlight. However, standard Windows tools directly change the timeout of the keyboard is not always possible, since laptop manufacturers often use proprietary drivers. USB-port or change of settings PCI Express can indirectly affect the stability of the lighting.

It’s also worth checking the adaptive brightness settings. Although this feature is primarily about the screen, on some Xiaomi models, the light sensor is connected to the keyboard. Turn off the Adaptive Brightness Adjustment function in the same additional power settings so that the system does not try to control the button lights on its own.

Use of the Xiaomi Notebook app

For owners of modern models of the Xiaomi Mi Notebook and RedmiBook line, the main control tool is the specialized Xiaomi Notebook application. This software provides advanced access to settings that are not available in the standard Windows interface. If you do not have this application, its absence is the main reason for the inability to fine-tune.

After installing and running the app, go to the settings section (usually the gear icon) and find the option “Keyboard Backlight” or “Keyboard Backlight” here. Some versions of the software have “Always On” mode, which ignores the idle timer, and activating this mode is the easiest way to solve the problem.

If there is no "Always on" mode, look for settings related to the light sensor. Often the backlight goes out because the sensor thinks that the room is light, or vice versa, tries to save energy when the charge is low. Disabling automatic adjustment in the Xiaomi Notebook app allows you to fix the backlight at the selected level.

It is important to note that the Xiaomi Notebook application requires certain system services. If the Xiaomi Service is stopped, the settings will not apply. You can check the status of services through the Task Manager or the command line by entering the services.msc command.

Registry Editing and Hidden Parameters

For advanced users who have not been helped by regular funds, the option of editing the registry remains, this method allows you to change the hidden timers that the keyboard controller controls. Be careful: incorrect change of the registry can lead to unstable operation of the system, so it is recommended to create a restore point before starting.

Open the registry editor by entering regedit in the search bar. You need to follow the path associated with settings. HID-Devices or a specific keyboard driver Xiaomi. Often the desired option is in the branch:

HKEY_CURRENT_USER\Software\Xiaomi\Notebook\Settings

If such a branch is not, its creation may not give a result, since the values are read from the BIOS. In some cases, however, it helps to create DWORD-A parameter with a value that turns off a sleep timer, such as a BacklightTimeout parameter with a value 0 or -1 (Depending on the driver version, it can mean infinity".

⚠️ Warning: Before making any changes to the registry, make sure to back it up.The incorrect value can cause the keyboard to stop responding before reinstalling the drivers.

It is also worth checking the USB Power Management section, as the internal keyboard is often defined as a USB-HID device. In Device Manager, find your keyboard, go to properties, the Power Management tab, and uncheck the "Allow this device to be turned off to save energy."

Update of BIOS and EC drivers

One of the common causes of ill-functioning backlights, including spontaneous shutdowns, is errors in the microcode of the Embedded Controller (EC). Xiaomi regularly releases BIOS updates that fix such bugs. If your laptop has not been updated for a long time, there is a high probability that the problem will be solved by installing the current version of the firmware.

Checking for updates is best done through the application Xiaomi Service or Mi Support. It is not recommended to download the BIOS from third-party sites. During the upgrade, the laptop should be connected to the network, and the battery should be at least 30-40%.

The updating process is as follows:

• 🔌 Connect your laptop to a power source.
• 📥 Launch the support application and find the "System Update" section".
• 💾 Download and install the update package BIOS/EC.
• 🔄 Wait for the automatic reboot and installation to be completed (the screen may go out several times).

After the BIOS update, the settings in the Xiaomi Settings app can reset to factory settings. You will need to reset the desired brightness and backlighting times. Often, after the update, a new option, "Keyboard Light Timeout", which was not previously available, appears.

Comparison of methods and compatibility table

Not all methods work equally well across laptop models. Mi Notebook Air, Pro, and the new RedmiBook series may have different hardware implementations of the backlight controller. Below is a table to help determine the most likely way to solve the problem for your model.

As you can see from the table, the most effective use of regular software for modern RedmiBook and Mi Notebook Pro models is the use of regular software. Older models such as the Air often have to resort to “crutches” like turning off USB power saving or editing the registry.

If none of the software methods worked, it could be a hardware problem, it could be a malfunction of the backlight plume or the controller itself, and you should consider going to the service center, especially if the laptop is under warranty.

Frequently Asked Questions (FAQ)

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The most stable result is given by a combination: BIOS update + setup in the official Xiaomi Notebook app + disabling USB energy saving in the Device Manager.

In conclusion, the flexibility of customizing Xiaomi laptops is constantly growing. If you are currently facing restrictions, chances are that the next driver update will feature more user-friendly features.