AMD has identified a serious problem with computers that use Ryzen 3000 or 5000 series processors. A problem that makes connected USB devices seem to lose the connection completely randomly and for no reason.
Among the errors that users have noticed are that the connection is completely lost, that the sound crackles with connected headphone amplifiers / DACs and that PCIe Gen 4 does not work properly. Wrong as AMD has now officially confirmed and acknowledged.
The affected person has previously had to downgrade the support on the motherboard from PCIe 4.0 to 3.0. A change that can easily be made via the BIOS, but which of course should be unnecessary.
Thankfully, it is a temporary change that can be restored at any time.
”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 (eg DAC / AMP combos), and USB / PCIe Gen 4 exclusion. ” – AMD
And since AMD has found the problem that causes the errors, we can soon count on updates to all motherboards that solve the problem once and for all.
With the microcode AGESA 1.2.0.2 the USB problem will be solved according to AMD.
The microcode will soon be ready to be sent to all motherboard manufacturers. It should be ready within a week and then we can expect the first BIOS updates in early April. However, it is unclear exactly when each manufacturer will release its updates.
