I read the entire Reddit thread. Summary:
The sad thing is that this has been known about on the 400 series chipset in 2019. This isn't a new thing, they just don't seem to care.
People have been gimping their system by reverting to PCIe 3.0 in the bios, which seems to be legit workaround. A couple of people said that: "AGESA 126.96.36.199 fixes the problem" ( ie. they can go back to using PCIe 4.0 ).
What's really sad is reading about: people selling their AMD systems and "going back to Intel", or spending 30 hours to figure out that the solution was to revert to PCIe 3.0, or RMAing all kinds of things that didn't need RMAing.
I mean... I'm using a ( eleven years old in March ) i7-860, GTX 780, which although aging, works fine still and everything worked out of the box, to the point that it was plug and play, which was weird. ( I've been PC gaming since there was PC gaming 1989 - Xenon 2 Megablast ).
I have to pick up a 5900x in 8 hours from Canada Computers because they last time I built an AMD was the Athlon 64 x2 4400... 15 years ago and the heat generation was so nuts that I decided that would be the first and last AMD build ( ie. never again ).
And here we are... 15 years later and people are still talking about AMD shitbox graphics drivers.
I dunno how people can be OK with running companies where the public reputation and legacy is for making shitbox drivers? One would have thought that this kind of thing would have been hammered out over the span of 15 years but I guess not... add some fucking QA QC already?
You guys can just roll into your local MicroCenter but in Canada the shelves are bare and backorder takes a couple of months+
Lol, I mean this post has already been replied to but I'll chime in...the heat generation of the 4400 was so nuts compared to what? A single core athlon 64? Certainly not the pentium D. Intel has had plentyyyy of shortcomings and bugs. FUD is fud.
Bugs suck and solutions need to be found. I had black screens with the 5700xt for the better part of a year before a solution presented itself. AMD needs to fix these issues.
Saying things like "Intel doesn't ever have issues" is nonsense though. Quirks and bugs with bleeding edge hardware is not uncommon, and dare I say it, todays new hardware has far less issues than we did 10 to 15 years ago when I first started building PCs.
I "upgraded" from an entry-level x370 to an entry-level 570x last week. In addition to this potential USB issue, I've found nothing but detractions from the 4 year-old x370 I was using previously. Slightly lower overclocking headroom (on my 3600), slightly less stable memory timings, and worse, multiple cost-cut features. All for 30% more in price.
I won't likely until I do my next set of upgrades see any of the PCI-E bandwidth improvements, at which point, I'll probably upgrade my mobo again. The only thing the 500-series gets me is a path to Zen 3 (although I'm hearing x370s may support Zen 3 shortly). Largely, moving to 500-series was a waste for me.
I mean that really sounds like poor research on your part. What board are you running?