Fixing Asus Monitor's Input Switching Issue

Many users have reported issues with their Asus monitors switching inputs automatically. While some find this feature convenient, others have expressed frustration with the lack of control over their display's input settings. This issue appears to be common across various Asus monitor models, including the VG27AQL1A, MG28UQ, and MX239H. Unfortunately, there does not seem to be a straightforward solution to disable auto-input switching, and users are left with manual workarounds.

Unplug all other input cables

If you're having trouble with your Asus monitor switching inputs automatically, one solution is to unplug all other input cables. This is because when other input ports, such as VGA or DVI, have cables plugged into them, the monitor will display the signal from these ports. Therefore, by unplugging all other input cables, you can prevent the monitor from automatically switching away from your desired input.

• Power off the monitor: Before you begin, it's important to turn off your Asus monitor to avoid any signal interference or accidental input switching.
• Locate all input ports: On the back of your monitor, identify all the available input ports, such as HDMI, DisplayPort, VGA, or DVI.
• Unplug all other input cables: Besides the cable connected to your preferred input port, unplug all other cables from the corresponding input ports. For example, if you want to use HDMI as your primary input, disconnect any cables plugged into the VGA, DVI, or other ports.
• Secure the desired input cable: Ensure that the cable connected to your chosen input port is securely attached to both the monitor and the signal source, such as your computer or gaming console.
• Power on the monitor: After confirming that only the desired input cable is connected, turn on your Asus monitor.
• Select the correct input: Use the input select button on your monitor to choose the input port that matches your connected cable. For example, if you connected your device through HDMI, select the corresponding HDMI input on your monitor.
• Test the setup: With the desired input selected, power on your connected device and verify that the monitor displays the correct signal without automatically switching inputs.

By following these steps and unplugging all other input cables, you can effectively prevent your Asus monitor from switching inputs automatically. This allows you to maintain your preferred display settings and avoid any unwanted interruptions or signal changes.

Adjust the input port

If you want to adjust the input port on your Asus monitor, you can try the following methods:

• Unplug all other input cables except for the one you want to use. Then, press the input select button to adjust the input port.
• If the input select is not responding, try this: power on the monitor, press and hold the menu button, then unplug the monitor's power until it turns off. Plug the monitor back in, and the input select button should now work.
• Check your user manual for instructions on how to switch inputs. You can find the manual on the Asus support page.
• If you have a dedicated source button on the front of the monitor, you can use that to switch inputs.
• If you have a 5-way button on the back of the monitor, you can press that to switch inputs.
• If you have a DisplayPort and HDMI source, you may want to invest in a KVM switch to make switching inputs faster and more convenient.
• If you have a Dell monitor, you can change the output settings through the touch features on the side of the monitor.

Please note that some Asus monitors do not allow users to disable auto-input switching or lock the monitor to a specific input.

Turn off the monitor and unplug it

If you want to stop your Asus monitor from switching inputs, one option is to turn off the monitor and unplug it. Here's a detailed, step-by-step guide on how to do this:

First, locate the power button on your Asus monitor. It is usually located on the front or back of the monitor, or on the side for some models. Press the power button to turn off the monitor. If your monitor is not responding, you can also turn it off by unplugging the power cord from the power outlet or power strip.

Once the monitor is turned off, you can proceed to unplug it. Gently pull the power cord out of the power outlet or power strip. If your power outlet is difficult to access, you may need to unplug it from the back of the monitor first and then unplug it from the power source. Be careful not to trip over the cord or damage it in any way.

Additionally, if your monitor has multiple input sources, such as HDMI, DisplayPort, or DVI, you can also unplug the corresponding cable from the monitor. This will ensure that the monitor is completely disconnected from any input signals.

By turning off and unplugging your Asus monitor, you can effectively prevent it from switching inputs. This method is useful if you want to keep your preferred input settings and avoid accidental changes. However, keep in mind that you will need to plug the monitor back in and turn it on when you want to use it again.

It is important to handle electronic equipment with care. Always make sure that your hands are dry and that you are working in a safe environment when plugging or unplugging devices. If you are not using the monitor for an extended period, consider storing the power cord safely to prevent tripping hazards and ensure the longevity of your equipment.

Plug the monitor back in

Now that you've unplugged your ASUS monitor, it's time to plug it back in, but with a twist! This time, you'll be using a different approach to prevent the monitor from automatically switching inputs. Here's a step-by-step guide on how to do it:

• Prepare the Connections: Before you plug the monitor back in, ensure that you have the correct cables ready. Typically, you'll be using an HDMI, DisplayPort, DVI, or VGA cable, depending on your monitor and graphics card configuration. Identify which cable was previously used and have it ready for reconnection.
• Power Off Everything: It's important to ensure that both your computer and the monitor are powered off completely. This step is crucial to prevent any potential damage to the hardware and to ensure a smooth process. Shut down your computer and turn off the monitor using the power button. If your monitor doesn't have a physical power switch, unplug it from the power outlet or surge protector.
• Re-arrange Cables Carefully: Take a close look at the back of your monitor and your computer's tower or laptop. Identify the input port that corresponds to the cable you identified in step 1. Carefully plug the cable back into the correct input port on your monitor and your computer. Ensure that the connection is secure and firm.
• Power On Sequentially: First, power on your computer and let it boot up completely. Then, turn on your monitor. By powering on the devices in this order, you're ensuring that the input signal is recognized correctly, and the monitor won't switch inputs unexpectedly.
• Select the Correct Input: If your monitor has multiple inputs and you've connected your computer to a different input port than before, you'll need to select the correct input source. Use the input select button on your monitor to cycle through the available inputs until you find the one connected to your computer.
• Test and Adjust: Once your monitor is powered on and set to the correct input, give it a test run. Open a few applications, play a video, or browse the web to ensure that the display is functioning properly. If needed, adjust the display settings, resolution, and refresh rate to match your preferences and the capabilities of your monitor.
• Lock the Input: Finally, you can lock the input to prevent accidental switching. Many ASUS monitors have a feature called "Input Source Lock" or "Input Lock" in the on-screen display (OSD) menu. Access the OSD menu by pressing the menu button on your monitor, navigate to the "Input" settings, and enable the input lock feature. This will prevent the monitor from switching inputs unless you disable the lock manually.

By following these steps, you should be able to successfully plug your ASUS monitor back in while preventing it from automatically switching inputs. Remember to be gentle with the cables and connections, and if you encounter any issues, double-check that all connections are secure and correctly plugged into the appropriate ports.

Use a DisplayPort to HDMI adapter

If you want to use a DisplayPort to HDMI adapter to stop your Asus monitor from switching inputs, there are a few things you should know. Firstly, most DisplayPort to HDMI cables and adapters are one-way, meaning they only work from a DisplayPort source (your computer or docking station) to an HDMI sink (your monitor). These cables do not work in reverse.

DisplayPort uses packet-based data transmission, which allows for longer cable runs and higher bandwidth compared to HDMI. Converting from DisplayPort to HDMI is relatively easy, and dual-mode DisplayPort outputs have built-in adapters to output an HDMI signal for use with passive DisplayPort to HDMI adapters.

However, if you want to convert from HDMI to DisplayPort, you would need an externally powered adapter, which may introduce delays or reduce resolution and refresh rates. These adapters are also generally more expensive than passive adapters.

Therefore, if you are looking to use a DisplayPort to HDMI adapter to stop your Asus monitor from switching inputs, make sure you have the correct type of adapter that supports the specific configuration you need. Additionally, keep in mind that you may need to adjust your output settings through the touch features on your monitor to ensure the correct input is selected.

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