I'm also seeing this issue on a fresh install of Ubuntu 19.10 with a Razer Core X Chroma and a Lenovo X1 Extreme Gen2. I was seeing it on a fully updated Arch Linux install and installed Ubuntu in hopes it would fix the issue. Here's some info from my current install. Let me know if you need anything else!
uname: Linux fate 5.3.0-24-generic #26-Ubuntu SMP Thu Nov 14 01:33:18 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux I've attached all the same info you were asking for earlier. ** Attachment added: "egpu_debug.txt" https://bugs.launchpad.net/ubuntu/artful/+source/linux/+bug/1749961/+attachment/5310852/+files/egpu_debug.txt -- 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