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taichi x470 BIOS 3.50 USB regression? |
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goertzenator ![]() Newbie ![]() Joined: 27 Jul 2019 Status: Offline Points: 3 |
![]() ![]() ![]() ![]() ![]() Posted: 27 Jul 2019 at 2:09am |
After installing the 3.50 BIOS update I immediately experience severe USB problems:
On ports USB5, USB6, USB32_TA_1, and USB3_9_10 devices connected through a hub experience a reset every few seconds. Details: - This is observed in both Linux and Windows. - This was observed using the hub built into my Dell U3417W, a Plugable 2.0 4-port hub, and a cascade of the 2. - Devices work correctly when plugged directly into the USB ports (ie no hubs). Confirmed under linux, but not Windows. - This worked correctly BIOS 3.46, so this seems to be a regression. - USB1-4 still work correctly. Other mobo and USB-C port not tested. - CPU is a 3900x. Additionally the IOMMU groups got "worse". Both my video cards are now in the same group. |
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