Same here on x395 (amd chipset) with Ubuntu 18.04 and 20.04 (kernel 5.4.0-14-generic). Also same on Fedora 31.
Attached a script that restore USB after undocking as workaround. ** Attachment added: "Script to reset xHCI after undocking" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1857385/+attachment/5329344/+files/xhci-reset.sh -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1857385 Title: xHCI host controller not responding, assume dead via USB-C docking station To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1857385/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs