Troubleshooting Apple Mac Pro Issues with AMD RX 580 Graphics Card

Introduction:

The Apple Mac Pro is a powerful machine known for its reliability, but even the most reliable devices can encounter issues from time to time. In this article, we'll explore a specific problem that has been reported by some users who have upgraded their graphics card to an AMD RX 580.

Problem Description:

The issue at hand involves a Mac Pro 5,1 that boots up without video output after installing the AMD RX 580 graphics card. The machine's LED lights turn on, indicating that it is powering up, but there is no display output. Users have reported being able to access their files and content via a networked computer, suggesting that the boot process itself is not the issue.

Troubleshooting Steps:

To troubleshoot this problem, I've taken a step-by-step approach to identify potential causes and test various solutions.

1. Check the Power Supply: One possible culprit could be the power supply unit (PSU). To rule out any issues with the PSU, I would recommend testing it with a different Mac Pro or using an alternative power source.

2. Replace the Graphics Card: Another possibility is that the AMD RX 580 graphics card itself is faulty. Try replacing it with a different graphics card to see if the issue persists.

Testing and Results:

To test these theories, I've performed several experiments:

1. Replaced the GPU with a stock ATI Radeon HD 5770: This revealed that the graphics card was not the cause of the problem.

2. Tested the Apple LED Cinema Display with my PC via DisplayPort to Mini DisplayPort adapter: The display worked fine, ruling out any issues with the display port or adapter.

3. Tested both MSI Radeon RX 580 Gaming X 8GB and MSI Radeon RX 580 Armor 8GB OC on my PC: These tests showed that the graphics card was not the cause of the problem.

Based on the results of these tests, it appears that the issue with the Mac Pro 5,1 booting up without video output after installing the AMD RX 580 graphics card may not be related to the GPU or power supply. Further troubleshooting and testing would be necessary to identify the root cause of this problem.

In conclusion, if you're experiencing a similar issue with your Apple Mac Pro 5,1, try replacing the graphics card with a different one and test it with various displays and adapters to rule out any issues.

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