Hi John and all, thanks for updating logs and enhancing the report! Due to a lot of other work, and the nature of this problem (being a FW issue that we'd try to alleviate using a hack in linux), I wasn't able to work the tentative hack approach yet.
The issue was "resolved" through a FW update by ASMedia, but this was only worked with a specific motherboard vendor, not as a general release. This is the problem with FW fixes...they are quite scattered and vendor-depending. So, can you John or any of the reporters try to reproduce the problem with: (a) Ubuntu 20.04, just released? (b) Ubuntu 18.04 running the current HWE kernel (5.3)? That'd be good data points. Also, if you could try Ubuntu 20.04 with latest mainline kernel (from ), that would be a gigantic help! Thanks in advance, Guilherme  https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ** No longer affects: linux (Ubuntu Artful) ** Changed in: linux (Ubuntu Trusty) Status: In Progress => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1749961 Title: xhci_hcd: TRB DMA errors reported with ASMedia ASM1142 USB 3.1 Controller To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1749961/+subscriptions -- ubuntu-bugs mailing list firstname.lastname@example.org https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs