AMD releases AGESA 1.2.0.2 patch to fix random USB disconnections

AMD rolled out a new AGESA 1.2.0.2 patch to respective motherboard manufacturers which address random USB disconnections. Respective motherboard makers should be rolling out stable BIOS with this pretty soon looking at the urgency of this widespread nuisance.

The story so far…

The red team said they were able to figure out the issue due to the Reddit community’s help. Unfortunately, the did not give any specifics, but most likely it is due to PCIe 4.0 lanes. Multiple users posted in r/AMD about random USB disconnections for no reason. Eventually, users tried to fix the issue and face many ideas. This narrowed it down to disabling two BIOS settings. AMD acknowledged and recommended those two temporary fixes to get around the issue until the new AGESA update. This worked by disabling PCIe 4.0 lanes and Global C-States.

The intermittent USB disconnection affected PCs using both Ryzen 3000 series and Ryzen 5000 series CPUs, affecting all 400 series and 500 series motherboards B450/ B550 and X470/X570). There have been no reports about affecting A series motherboards simply because it does not provide PCIe 4.0 lanes. Some manufacturers provided limited PCIe 4.0 support for B450/ X470 support.

For what’s worth, its good to see AMD Global reading up on community contributions and also working on an AGESA update.

The Current State of BIOS Rollouts

Gigabyte released the F433C BETA BIOS with AGESA 1.2.0.2. But it is best if people get a stable BIOS, instead. Asus and MSI didn’t release it at the time of writing but most likely they’ll release a stable version.

The last update was on January 18th, 2021 using the AGESA 1.1.0.0 which was rolled out in December 2020. Since then, AMD released AGESA 1.2.0.0 in February and AGESA 1.2.0.1 in March ( a few days ago). Other Tier 1 motherboard makers like ASUS and MSI are keeping up with stable BIOS release with updated AGESA microcode. If you noticed, Gigabyte doesn’t mention BETA BIOS unlike they used to- let alone provide a disclaimer. While obviously there will be a delay between the AGESA patch and stable BIOS release, users prefer a stable release with the updated microcode. While hardware enthusiasts and system builders know about Gigabyte’s BETA suffix, it is not a good idea to assume everyone does.

We’ll just have to wait and see how much time does Gigabyte take to release the stable BIOS version of this compared to others.

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