Modern Xiaomi Mi TVs and Android TVs are powerful multimedia centers that can play high-resolution content. However, the built-in capabilities of Smart TVs are sometimes not enough to work with professional software, run heavy games or view specific video formats from a local hard drive. In such situations, using a computer as a signal source becomes the most sensible solution to turn a TV screen into a huge monitor.
Using HDMI digital interfaces is the de facto standard for transmitting audio and video streams without loss of quality. Unlike wireless technologies, cable connection guarantees minimal input lag, which is critical for gamers, and stable 4K HDR signal transmission without compression artifacts. Proper configuration of this connection requires not only the physical connection of the cable, but also a competent configuration of the Windows or macOS operating system, as well as settings of the TV itself.
In this guide, we will take a detailed look at all the stages of connection, from choosing the right cable to fine-tuning color reproduction and soundtracks. You will learn how to avoid common problems such as lack of image, discrepancy resolution or problems with sound, and how to make working behind a large screen as comfortable as possible. TV, used in Xiaomi devices.
Required equipment and port preparation
Before starting the connection procedure, make sure you have a serviceable HDMI cable. To transmit a signal in 4K resolution with HDR support and high frame rate, you need an HDMI 2.0 or higher cable. Older versions 1.4 cables may not be able to transmit high-bitrate video stream, which will lead to a flickering screen or a decrease in picture quality to 30 frames per second.
Note the location of ports on the back or side of a Xiaomi TV. Usually the ports are numbered and some of them can support additional features such as ARC (Audio Return Channel) or eARC. It is recommended to use any free port to connect your computer, but if you plan to use an external speaker system through a receiver, it is more logical to use an ARC-marked port.
⚠️ Attention: Before connecting the cable, it is strongly recommended to completely turn both devices off the socket or use the power button to put them into deep sleep mode. HDMI supports hot connection, voltage surges when connecting active devices can theoretically damage port power controllers.
It’s also worth checking if your computer only has modern digital outputs like DisplayPort, Mini HDMI or USB-C (Thunderbolt) in which case you’ll need an active or passive converter that supports the desired resolution.
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Use cables no longer in length 3-5 signal-meter 4K. At long distances, the signal may fade and active use will be required. HDMI-power-cable.
Physical connection and signal source selection
The physical connection process is as simple as possible and requires no special skills: insert one end of the HDMI cable into the corresponding graphics card connector of your computer. If you have a desktop PC with a discrete graphics card, connect the cable to the horizontal connectors on the card itself, not to the vertical ports on the motherboard, which may be inactive with an external GPU.
Once you connect the cable to your computer, connect the second end to the selected port on your Xiaomi TV. Turn on the TV using the remote control. The screen will show a desktop or Android TV screensaver. Now you need to switch the signal source to the port you stuck the cable into.
To select a source, click the login menu button on the remote (often indicated by the square icon with an arrow inside or the inscription Input). In the list that opens, select the appropriate port, such as HDMI 1 or HDMI 2. If done correctly, an image of your computer's desktop should appear on the TV screen.
☑️ Connection check
If the image does not appear immediately, give devices a few seconds to set the handshake HDCP (Digital Content Protection). Sometimes the system takes time to determine the characteristics of the connected display and determine the optimal parameters for the video stream. In rare cases, it may be necessary to restart the computer with the TV already on.
Configure image parameters in Windows and macOS
Once an image is successful, it is often necessary to adjust the display mode; the operating system may default to a screen duplication mode, which is not always convenient; and to expand the workspace, you need to change the projection settings.
On Windows 10/11, press Win + P. The side menu will open to select Expand mode, allowing you to drag and drop windows between your computer monitor and your TV screen using the latter as a full-fledged second display. In macOS, go to System Settings → Monitors and uncheck Video Control (or select Stop Frame in new versions) to separate desktops.
The critical parameter is resolution and refresh rate. By default, your computer can choose low resolution. In Windows, go to Settings → System → Display. Select Xiaomi TV from the display list and set 3840 x 2160 (for 4K models) or 1920 x 1080 under the "Display Resolution" section. Also, in the advanced display settings, check the refresh rate: for comfortable work and games, it is advisable to set 60 Hz or higher if the port and cable support this.
⚠️ Note: If you are setting a high resolution (4K) This is a 15-second wait, and the system automatically returns the previous settings if the TV doesn't confirm that the mode is in the selected mode.
For users working with color (design, photos), calibration is recommended. In the settings of the Xiaomi TV, go to Movie or Normal image mode, turn off all dynamic color enhancements and noise cancellation to get the most accurate color reproduction from the computer.
Configuration of audio system via HDMI
One of the main advantages of the interface HDMI It's the ability to transmit multi-channel audio along with video. Once the cable is connected, the default sound from the computer can continue to go through the built-in speakers of the laptop or connected devices. USB-You need to manually redirect the audio stream to the TV.
On Windows, right-click on the speaker icon in the tray (near the clock) and select Open audio settings (or "Sounds" in older versions). In the list of output devices, find the name of your TV, which often contains the Xiaomi brand, Android or the name of the Intel/NVIDIA High Definition Audio chip. Select it and click "Default".
For quality audio transmission, it is important to adjust the bit stream format. In the speaker (TV) properties window, go to the tab Additional. Here you can select bitwise and sampling frequency. For watching movies, the optimal choice is 24 bits, 48000 Hz (Studio recording) or 16 bits, 44100 Hz (CD). Higher values may not be supported by the built-in speakers of the TV and lead to distortion.
If you are using a Xiaomi TV as part of a home theater and the sound must go to external acoustics via optical output or HDMI ARC, make sure that the TV’s audio settings (Settings → Sound → Output) select HDMI ARC or Optical Output, and the sound format is set in Pass-through so that the TV does not decode the sound on its own, but transmits the original bitstream (Dolby Digital, DTS) to the receiver.
| Parameter | Recommended value for TV | Recommended value for Hi-Fi |
|---|---|---|
| Sound format | PCM | Bitstream / Passthrough |
| Frequency of sampling | 48,000 Hz. | Auto/Original |
| Channels | stereo | 5.1 / 7.1 |
| Improvements | Disconnected. | Disabled (on the PC side) |
Solving Common Image Problems
Even with the right connection, users can encounter image artifacts. One of the common problems is that the image doesn't get into the edges of the screen. This phenomenon is called Overscan. To fix this on Xiaomi TVs, go to the image settings (Settings → Image → Additional settings) and find the setting "Screen Form" or "Speciality Ratio." Set the value by screen size, Just Scan or 16:9 without zooming.
Another common problem is blurry text and fuzzy fonts. This often happens when the TV interprets the connected PC as a video device and applies anti-aliasing. In the TV image settings, find the mode and switch it to the Game or PC. If there is no such mode, turn off all the image enhancement features: dynamic contrast, noise reduction and motion smoothing.
If the image periodically goes out for a second and reappears, this may indicate an unstable connection or problem with HDCP. Try to switch the cable to another HDMI port. Also check if the cable is compressed. In some cases, updating the graphics card drivers on the computer to the latest version helps, as manufacturers often release patches for compatibility with new TVs.
Why does black look gray?
Using Xiaomi TV as a gaming monitor
For gamers, connecting to the big screen opens up new immersive possibilities, but requires the right setup to minimize input delay. The standard TV mode includes many post-processes of the image, which increases Input Lag. For comfortable play, you need to activate the game mode.
Xiaomi’s TV remote often has a separate button to quickly access settings or app menus. Find image settings and activate Game Mode. This mode turns off heavy image processing algorithms, which greatly speeds up the matrix response. Also, on current models with HDMI 2.1 support, it is worth checking for VRR (Variable Refresh Rate) and ALLM (Auto Low Latency Mode) functions, which automatically switch the TV to game mode when you start a game on a PC.
It is important to note that TVs with matrices type VA (Often found in Xiaomi models, they have high contrast, but may have smaller viewing angles and response times compared to the other models. IPS-For dynamic shooters, this can be critical. If you notice plumes behind moving objects, try turning on motion compensation in your TV settings, but be careful: this can add soap opera artifacts".
⚠️ Warning: Long-term static image (for example, Windows taskbar or game interface with permanent elements) HUD) This can cause pixels to burn out on OLED-screens or temporary residual image on LCD. Use a screensaver and hide the taskbar during long work.
For best gaming results, it is also recommended that the graphics card settings set up scaling control on the GPU side rather than the display, which will provide a clearer picture in games with a resolution below the native TV resolution.
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Activating game mode on the TV reduces input delay to a minimum, making the control responsive, comparable to a conventional computer monitor.