A number of users turned to Reddit late last year to complain that their computers were experiencing sudden USB disconnection as well as poor signal quality on AMD X570 and B550 motherboards. Although AMD didn’t acknowledge the issue immediately, the company issued a statement three weeks earlier after it had started collecting information regarding the ongoing problem. Although the users revealed that the severity of the problem was shown to fluctuate randomly, a large number of users were experiencing issues with new GPUs and VR headsets.
While AMD hasn’t revealed the cause of the issue, one Redditor suggested that the cause of the problem might be a “timing issue trying to synchronize USB signaling with the faster symbol rates of PCIe 4.0,” while another thinks it might be caused by “a controller reset triggered due to too many uncorrectable PCIe errors.”
And now, in a statement, AMD has revealed that the company has resolved the issue and an AGESA update containing the fix will be sent to motherboard manufacturers later next week. According to the company, the first beta with the fix will be available by early April.
The company wrote, “We would like to thank the community here on r/AMD for its assistance with logs and reports as we investigated the intermittent USB connectivity you highlighted. With your help, we believe we have isolated the root cause and developed a solution that addresses a range of reported symptoms, including (but not limited to): USB port dropout, USB 2.0 audio crackling (e.g. DAC/AMP combos), and USB/PCIe Gen 4 exclusion.”
“AMD has prepared AGESA 126.96.36.199 to deploy this update, and we plan to distribute 188.8.131.52 to our motherboard partners for integration in about a week. Customers can expect downloadable BIOSes containing AGESA 184.108.40.206 to begin with beta updates in early April. The exact update schedule for your system will depend on the test and implementation schedule for your vendor and specific motherboard model. If you continue to experience intermittent USB connectivity issues after updating your system to AGESA 220.127.116.11, we encourage you to download the standalone AMD Bug Report Tool and open a ticket with AMD Customer Support.”