AMD B550, X570 Chipset Based Motherboards USB Issues - AMD Acknowledges - PC SEEKERS

AMD B550, X570 Chipset Based Motherboards USB Issues - AMD Acknowledges

AMD-B550-Chipset-Block-Diagram
 
 

(Update 20/02/2021) AMD Finally Acknowledges The USB Issues On 500 Series Motherboards:

Yes you read it right. 6 months after I wrote a piece on: Gigabyte B550 Aorus Pro USB Issues - How to solve? Should You Buy?, AMD have now, on 20/02/2021, finally come out via a reddit post and publicly acknowledged the USB issues that have been plaguing their 500 Series motherboards. The following statement is released by AMD with regards to the issues and the complaints:
AMD is aware of the reports that a small number of users are experiencing intermittent USB connectivity issues reported on 500 series chipsets. We have been analyzing the root cause and at this time, we would like to request the community's assistance with a small selection of additional hardware configurations. Over the next few days, some r/AMD users may be contacted directly by an AMD representative (u/AMDOfficial) via Reddit's PM system with a request for more information.

This request may include detailed hardware configurations, steps to reproduce the issue, specific logs and other system information pertinent to verifying our development efforts. We will provide an update when we have more details to share, customers facing issues are always encouraged to raise an Online Service Request with AMD customer support; this enables us to find correlations and compare notes across support claims.
 Hopefully now AMD will fix this issue soon and for good.
 

The Back Story - Its been happening for 6 months:

Before we get into the full details here's a back story so that you have some information on what's been happening, how long it has been happening and why am I following this chain of events: Back in August of 2020, yes 6 months ago, knowing that NVIDIA was going to announce their new Ampere based graphics cards in September I decided it was about time to build myself a PC as soon as the next gen CPUs and GPUs hit the market. I also knew AMD was coming with their Zen 3 based CPUs so I convinced myself to buy a mid-range B550 board - and after looking at all the reviews and recommendations I decided that I will go for the Gigabyte B550 Aorus Pro motherboard. Then I got into the process of researching about the board like reading feedback from users who already bought the board, trust me reading user experienced based reports is as important as reading / watching reviews - but also note that a single user complaining about an issue could be an isolated case but if you find the same issue being complained about by multiple users then there is your red light of alarm. So this is when I was introduced to the USB issues that were plaguing the B550 motherboards.

So first I came across this thread on r/gigabyte: Stay away from the Gigabyte Aorus B550 pro motherboards.

And then this thread: Problems with B550 Aorus Pro AC.

And there were more posts and threads on Gigabyte's own forums for example this one: USB Fails and Network Drop on B550 Aorus Pro. Yes I know this one is from September, but you get the point, these issues are not something that started in October or November they have been around for more than 6 months now and AMD have not even publicly acknowledge that this issues.

After reading such complaints, I thought people needed to know this before they went on to buy this (at that time I, and for that matter none of the users, didn't have any idea that it was an issue on AMD's side) board and so I wrote and kept updated this article on this website as new information started to make sense: Gigabyte B550 Aorus Pro USB Issues - How to solve? Should You Buy?
 
No, I was not targeting only one board or one manufacturer, I only wrote an article on the board whose issues were being reported initially (in the month of August). There were no reports of USB issues on ASUS or MSI or ASRock boards, at least none that I could find in a quick Google search. I do have a theory on why this happened so please read the section: Why the wide spread reports on Gigabyte B550 Aorus Pro boards? - My theory.

Its Not Gigabyte Or Board Partners - Its AMD:

Yes I have only cited Gigabyte B550 Aorus Pro users in the above section but this issue is not something that is isolated to this particular board or brand.

So in the coming months as I was keeping up with the BIOS updates and user feedback in the comments section on my previous post, I realized that the issue was not just limited to the B550 Aorus Pro or Gigabyte for that matter. As days went reports of ASUS B550 motherboards users experiencing the same issue started to pop up. Here are a few examples: 
  1. ASUS ROG Strix B550-E Gaming. - on ROG Forum
  2. PCIe Gen 4 causes USB problems on B550/X570 - ROG Forum
  3. ASUS ROG Strix B550-E Sound and USB Issues - Overclockers.com/forums/
 
Same goes for MSI users:
 
And for ASRock:
  1. B550m PRO4 USB device disconnecting and reconnect - ASRock Forum
  2. B550m Pro4 USB Issues - on Micro Center Community Forum

These are just a few threads that I could find after a quick Google search, there are a lot more users out there that are complaining about this same issue that's been happening for over 6 months now.

Gigabyte Support Responds To B550 Aorus Pro USB Issues (Source)
 
The above statement was given by Gigabyte's support when a B550 Aorus Pro user reached out to them regarding the issue.
 
So it is now clear that this does not have a lot to do with the motherboard manufacturers but AMD themselves. So why is AMD silent on this?
 
 

Why Wide Spread Reports On Gigabyte B550 Aorus Pro Motherboards? - My theory:

I think the simplest way to answer this question is that many people bought this board based on the fact that this is one of the most recommended board by reviewers. The more the people buy it, the more people face the issue and more of them take to the internet to show their despair after they have tried every possible method they could to get rid of the issue.
 

Potential 'Temporary' Fixes You Can Try:

    Keeping Your Motherboard BIOS Up To Date:

Few Users Claimed That BIOS Update 1.1.0.0 D Solved The USB Issues But Not All Of Them (Source)
 
Updating to newer BIOS versions as they come out is your best bet at resolving the issue as AMD works on it with every new update. Few users got their issues fixed with BIOS update AGESA ComboV2 1.1.0.0 D or 1.1.0.0 Patch D while a few others still have the issues.

Also please do note that if you already have a stable BIOS and if you are updating to a newer BIOS please save a copy of the current stable BIOS so that if a future BIOS versions have some kind of abnormal behavior you will at least have option to re-flash the older version.
 

    Disabling Global C-States:

Video by Buildzoid - Disabling Global C-States
 
This was suggested by Gigabyte support team back in November as a temporary fix / work around while AMD worked on a fix. Again while this fixed the issue for a few, there are still people who have not seen any effect from disabling C-States. If this does not fix your issue please try the other ones that may help you for the time being.

    Force PCIe Gen 4 to Gen 3:

Few people have also reported that forcing PCIe Gen 4 to PCIe Gen 3 in the BIOS solves the USB issues. Though it is also to be noted as with all other "temporary fixes" this fix does not work for all but for a few - that said you should definitely give it a try.

May be it was after this realization Gigabyte went ahead and split the PCIe Gen 4 "enable" option between the PCIe x16 slot and the m.2 slot so that you can force the PCIe x16 slot to run on PCIe Gen 3 loosing minimal GPU performance while still maintaining the Gen 4 capability of the M.2 slot.
 

    Use 3.X Ports Instead Of USB 2.0:

Some users have reported that they only face the USB stuttering issues while using USB 2.0 ports and it goes away when they only use USB 3.X ports. Also there are many people on whose motherboards both USB 2.0 and 3.X ports are affected so try your luck I guess.

    Update AMD Chipset Drivers:

Few users speculated that the issues might be causing on the USB(s) that are connected through the chipset, though it is mere speculation and nobody knows for sure, it is recommended to update your chipset drivers.
 

    Keep Windows & Other Drivers Updated:

Also it is a good practice to keep all your drivers updated - but if you realize a certain driver update broke something please do not feel shy to revert back to older driver version. Same goes with Windows, expect that there is more possibility that every subsequent update might break something new in your PC.

What Could Be The Cause?

Though there is no clear cause that could be identified yet, there are a few speculations going around ranging from:
  1. USB issues are more prevalent after people had more access to PCIe 4.0 graphics cards with the likes of AMD Radeon RX 5000 and 6000 Series graphics cards as well as NVIDIA GeForce RTX 30 Series graphics cards.
  2. May be the USB ports that are connected through the chipset are the ones stuttering / flickering / turning on and off. 
  3. May be the USB ports that are connected in stacks of 4 are the ones that are most affected.
 
Though the speculation that use of a PCIe 4.0 graphics card is the one that has more base to it and can be cited with the numerous forum posts supporting this - for example this thread - where the user started experiencing the USB issues on his ASRock B550M Pro4 about 2 hours after installing the RTX 3080 which is PCIe Gen 4 graphics card, before that he was using the GTX 760 without any issues.
 
But I have seen a few threads where people who do not have a PCIe Gen 4 graphics cards have also complained about this issue and there are also people who have a PCIe Gen 4 graphics card and never faced the issue. So what I need you to do is comment down below your PC specifications and if you are facing the USB glitching issue also if you have the patience and time to type how and when it started would be much appreciated. Please read the below section and copy the format and give your answers accordingly.

What You Can Do:

Update 20/02/2021: After AMD's acknowledgement of the USB issues, what you can now officially do is go to the Online Service Request page and raise a ticket with the customer support and give them the details they require. Thank you.
 
(Wrote on 08/02/2021):
So to know for sure if it is PCIe Gen 4 graphics cards running on a PCIe Gen 4 motherboard in a PCIe Gen 4 x16 slot is that you all need to comment your PC specifications in the following format (copy and paste this in the comments section with your answers):
 
Facing USB Issues?: Yes / No
CPU: (Please specify if overclocked)
Motherboard with Chipset:
GPU: (Please specify if overclocked)
RAM:
XMP: ON / OFF
RAM overclocking outside of XMP: Yes / NO
Storage (Please specify if Gen 4):
PSU:
Case:
CPU Cooler and and dongles if you use any:
Did any of the above temporary fixes fix your Issue?:
When and how did the issue start?:

Please drop your answers down in the comments section below so that we can collectively understand what exactly is the cause. Also tweet and tag AMD, they need to fix this or at least provide an official statement acknowledging the issue.
 

Also if you think there is some information missing or a potential fix I did not mention please let me know down in the comments section below.

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