Just got the issue again with latest Bionic kernel (Precision 5520 + TB16):
[253938.395439] xhci_hcd 0000:0e:00.0: ERROR unknown event type 15 [253943.344375] xhci_hcd 0000:0e:00.0: xHCI host not responding to stop endpoint command. [253943.344704] xhci_hcd 0000:0e:00.0: xHCI host controller not responding, assume dead [253943.344865] xhci_hcd 0000:0e:00.0: HC died; cleaning up [253943.344953] usb 3-1: USB disconnect, device number 2 [253943.344955] usb 3-1.1: USB disconnect, device number 3 [253943.344957] usb 3-1.1.1: USB disconnect, device number 6 [253943.344960] usb 3-1.1.1.1: USB disconnect, device number 8 [253943.344963] usb 3-1.1.1.1.4: USB disconnect, device number 10 [253943.345081] usb 4-1: USB disconnect, device number 2 [253943.345083] usb 4-1.1: USB disconnect, device number 3 [253943.345086] usb 4-1.1.1: USB disconnect, device number 5 [253943.346372] usb 4-1.2: USB disconnect, device number 4 [253943.489086] usb 3-1.1.1.3: USB disconnect, device number 13 [253943.556882] usb 3-1.1.1.5: USB disconnect, device number 12 [253943.557415] usb 3-1.1.2: USB disconnect, device number 11 [253943.557687] usb 3-1.1.5: USB disconnect, device number 7 [253943.558220] usb 3-1.3: USB disconnect, device number 4 [253943.558465] usb 3-1.5: USB disconnect, device number 5 uname: Linux vesho 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 16:00:05 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1766076 Title: USB over thunderbolt turns off every once in a while To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1766076/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
