Some time ago, AMD Ryzen series processors were exposed to USB connection problems. AMD conducted an extensive investigation to determine the root cause. So far, AMD has still not proposed a complete fix for this problem, but the official release of technical support involving this problem for the first time may help temporarily solve this situation.
At present, these problems seem to be limited to the use of Ryzen 3000 series and 5000 series processors in 400 series and 500 series chipset motherboards (X570, X470, B550, and B450). The random drop of USB devices covers different types of USB devices, keyboards The mouse drops instantly or responds slowly, VR devices, external video capture devices, CPU coolers that need to be connected by USB, etc., there are no rules to follow. Enthusiastic users have been trying to find different solutions, and it seems that the situation has improved.
AMD’s technical support department sent an email to one of the affected users outlining the situation and its recommendations. AMD also confirmed to TomsHardware that this is the current official guidance for this situation, but it is only a suggestion and cannot guarantee that these steps can solve all users' problems. A brief summary of AMD's official recommended steps are:
1. Confirm that the motherboard has been updated to the latest BIOS version and configured with optimized/factory default settings.
2. Check whether the Windows 10 system is fully updated, and update it with reference to the relevant Microsoft instructions.
3. Make sure to install the driver of AMD Ryzen related chipset, and it is the latest version. The latest version of the driver is 2.13.27.501.
If you still encounter USB connection problems after performing the above operations, you can consider any of the following solutions:
1. Set the PCIe mode from Gen4/Auto to Gen3 in the BIOS.
2. Disable Global C-State in the BIOS.
Most of the suggestions are based on common-sense troubleshooting tips. The two workarounds have been seen in the suggestions after discussion by some users. It has been a while, and they are nothing new. However, AMD’s recommendations did not use some of the methods summarized on the Internet, such as manually uninstalling/reinstalling USB ports and root hubs, and disabling unused USB devices. It can be seen that AMD has narrowed down the solution of potential problems to a certain extent and is closer to the root of the problem.
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