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by bitL 1190 days ago
Well, I have USB3 problems with all my AMD machines which makes e.g. attaching a VR headset reliably difficult. Random quickly repeated disconnects of devices due to a buggy chip from ASMedia/ASUS that AMD uses everywhere. I like TDP of the current gen though AMD turned to an even worse company than Intel in how it treats Threadripper users. DisplayPort over USB-C might not work either.
2 comments
lhl 1190 days ago
While having hardware compatibility issues suck, I'm not sure what your problems have to do with AMD's mobile APUs, which have their USB2/3/4 controllers implemented on-die (block diagram: https://cdn.videocardz.com/1/2021/12/AMD-Rembrandt-Diagram.j...) not using an external controller.

USB features depend ultimately on the laptop manufacturers' implementation (eg neither the HP or Lenovo models linked implement USB4 but they are in other models like the Lenovo Z13), but I haven't seen any that claim to have DP-alt support not be able to support it. As the Framework will have USB4 (and DP-alt and PCIe encapsulation are mandated by Microsoft for Windows 11 compatibility), I don't think that's a real worry for anyone.

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bitL 1189 days ago
Glad to hear that! My 8-core AMD laptop from ASUS with 3080 is almost 2 years old now so things might have changed. My Threadripper still has USB issues and I don't like e.g. inability to type text or move mouse for 10-20 seconds just because the USB controller on the most expensive Threadripper board decides to have a game of disconnects.
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lhl 1189 days ago
Again, I agree that hardware compatibility issues suck... Personally, I think life's too short to live with glitches like that - ASMedia chips are used in a lot of PCIe USB cards these days as well, but I've had good luck w/ Renasas cards in the recent past (when I was running VFIO). These USB cards are all pretty cheap ($20-40), so I'd order a few to try and keep the one that works the best.
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sudosysgen 1190 days ago
Are you using a Reverb G2? I haven't had any issues with my recent AMD laptop CPU, not a probel with DP over USB-C either.
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bitL 1190 days ago
Yes, Reverb G2.
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sudosysgen 1190 days ago
Do you have the upgraded cable?
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bitL 1190 days ago
No, the original one. Didn't even know there was an upgraded one.
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sudosysgen 1190 days ago
If you contact Dell support there's a pretty good chance you'll get the cable which should fix it for you :)
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