AMD investigating USB problems with 500 series chipsets (update - BIOS fix inbound)

On Redit,  AMD started collecting user info from  end-users that experience USB issues on the 500 series motherboards. USB issues include intermittent disconnection of USB devices such as keyboards, mice or VR headsets. The company is now actively investigating the cause.

AMD reports on Reddit that the company is aware of the problem and that it is looking for additional data. Over the past weeks various Reddit discussions surfaced in which users report that the connection of multiple USB devices fails periodically. While possible fixes have been published, they don't seem to work for all users. Users can revert their PCIe connections to PCIe 3.0 or disable 'C-States' in the bios. However, several users report that this does not completely solve the problems, although the problem is said to be less common.

The company asks for help on the Reddit community.  AMD now on Reddit has a statement in which they ask you (if you have the issue) to you examine the USB disconnections with the 500 chipsets in an offer so find a solution. Reddit users will be contacted to take a closer look at the respective use-cases. Users are also asked to start an online service request to report problems.

The focus on the chipsets is the 500 series however similarities have been reported on other platforms as well, current observations include that Vermeer and possibly a not fully developed power-saving function occasionally lead to issues with  USB connections. 

AMD mentions it will provide new details as soon as more is known about the problem and its cause. Furthermore, any user experiencing USB problems will be prompted to contact AMD Customer Service.

Updated: In a post on Reddit, AMD says they have found the root cause. Agesa 1.2.0.2 should provide solutions for problems with PCIe 4.0, USB port failure, and crackling audio over USB 2.0, among other things. Within a week, the new version of Agesa will be distributed to motherboard manufacturers. Users can expect beta versions of bios updates with Agesa 1.2.0.2 in early April. The precise date depends on the vendor's testing and implementation schedule, as well as the specific model.

This should resolve the following USB issues:

• Failure of the USB connection
• USB 2.0 audio crackling (e.g. DAC / AMP combos)
• USB / PCIe Gen 4 exclusion.

The first beta versions should then be expected in early April.

Update (29/3): AGESA version Combo-AM4v2Pi 1.2.0.2, should the various USB problems, this is announced by AMD and the mainboard manufacturers for April, interim v1.2.0.1 Patch A should already provide improvements on the subject of USB  segment.