Q&A: New GPU Issue – Unsupported Input Timing Fix

1. Question – New GPU Issue

Some netizens asked:

The computer originally had no issues and used an AMD RX590 Sapphire, which could run games at 100Hz.

However, after replacing it with an RX5700XT 50th Anniversary Edition graphics card, the screen displays the message: “The monitor does not support the current input timing. Please change the input timing to 1920×1080, 60Hz.”

It shouldn’t be a problem with the graphics card, because although the monitor shows an error, I can hear the sound of my wallpaper through the speakers.

2. Answer – New GPU Issue

1. Understanding Input Timing

The monitor’s input timing, also called the “display input timing diagram” (DITD), refers to the sequence and rate at which display signals are received. It includes:

• Horizontal Sync Signal (HSync): Aligns horizontal lines.
• Vertical Sync Signal (VSync): Aligns vertical frames or fields.
• Pixel Clock Signal: Controls pixel rendering.

These signals ensure that the computer-generated image is displayed correctly on the monitor. If the input timing is incorrect, the display will not function properly.

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2. Troubleshooting

The issue can stem from hardware or software settings. Generally, you should follow these steps:

Analyze the Symptoms:

After replacing the graphics card, the monitor shows the message:
“The monitor does not support the current input timing. Please change the input timing to 1920×1080, 60Hz.”

This indicates:

1. Monitor and cable are functional.
2. Resolution or refresh rate settings are incorrect (likely too high).

While cable compatibility issues cannot be ruled out, the most probable cause is incorrect display resolution and refresh rate settings.

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3. Fix via Safe Mode

For systems running Windows 10/11:

1. Force Safe Mode:
   • Power on the computer.
   • Hold the power button until it shuts down forcefully.
   • Repeat this process three times. On the third restart, Windows should automatically enter recovery mode.
2. Select Safe Mode with VGA Display:
   • From the recovery options, choose safe mode with basic VGA display.
   • The monitor should display correctly in a low-resolution mode.
3. Adjust Display Settings:
   • Log in to Windows.
   • Set resolution to 1920×1080 and refresh rate to 60Hz in the display settings.
   • Save changes and restart.

Ensure that the refresh rate is set specifically to 60Hz in the monitor’s advanced settings.

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4. Additional Steps if the Issue Persists

1. Replace the Display Cable:
   • Test with a new cable to rule out compatibility issues or improper installation.
   • Try different output ports on the GPU.
2. Reinstall GPU Drivers:
   • In safe mode, uninstall the current graphics drivers.
   • Restart and reinstall the latest drivers for the RX5700XT 50th Anniversary Edition.

By following these steps, the problem should be resolved.

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