Hello, I use Dell 7480 laptop connected to Dell TB16 Thunderbolt docking station. Once in a while when USB device gets connected to Dell TB16 dock its xHCI controller "dies". To recover its functionality it's required to reconnect Thunderbolt cable. What's interesting video output to external monitor connected to the same one dock works all the time flawlessly. Version-Release number of selected component (if applicable): Currently I'm on Fedora-28 with kernel 4.17.3-200.fc28.x86_64 but that issues has been seen from the very beginning (cannot recall exact kernel version I started from with that laptop, I guess it was 4.14.y or 4.15.y). How reproducible: Once in a while, i.e. not on every connection of USB device but pretty often. Like every 10th time. Steps to Reproduce: 1. Plug-in USB device (could be anything like FTDI USB-to-Serial cable, smartphone, anything)repeat. 2. Wait for at least a minute (for USB device gets recognized and if xHCI controller stops to respond kernel will disable it which will be visible if there's something like mouse/keyboard/audiocard is connected to the dock as well - so it will stop to work) 3. If nothing happens - unplug and repeat from (1). Actual results: In dmesg the following will appear: ----------------------------------->8-------------------------------- [ 6163.713341] usb 3-1.3: new high-speed USB device number 9 using xhci_hcd [ 6169.421418] usb 3-1.3: device descriptor read/all, error -110 [ 6175.966362] xhci_hcd 0000:0b:00.0: xHCI host not responding to stop endpoint command. [ 6176.057213] xhci_hcd 0000:0b:00.0: Host halt failed, -110 [ 6176.057214] xhci_hcd 0000:0b:00.0: xHCI host controller not responding, assume dead [ 6176.057224] r8152 4-1.1:1.0 enp11s0u1u1: Stop submitting intr, status -108 [ 6176.057227] r8152 4-1.2:1.0 enp11s0u1u2: Stop submitting intr, status -108 [ 6176.057235] xhci_hcd 0000:0b:00.0: HC died; cleaning up [ 6176.057300] usb 3-1-port3: cannot disable (err = -110) [ 6176.057332] usb 3-1-port3: couldn't allocate usb_device [ 6176.057338] usb 3-1.5: USB disconnect, device number 3 [ 6176.057386] usb 3-1: USB disconnect, device number 2 [ 6176.057713] usb 4-1: USB disconnect, device number 2 [ 6176.057715] usb 4-1.1: USB disconnect, device number 3 [ 6176.058335] usb 3-1.7: USB disconnect, device number 4 [ 6176.058336] usb 3-1.7.1: USB disconnect, device number 5 [ 6176.080309] usb 4-1.2: USB disconnect, device number 4 [ 6176.080776] usb 3-1.7.3: USB disconnect, device number 6 [ 6176.105211] usb 3-1.7.4: USB disconnect, device number 8 ----------------------------------->8-------------------------------- Some logs I have right away: 1. lsusb -v output after reconnection of the docking station (when all devices work again) https://bugzilla.redhat.com/attachment.cgi?id=1458089 2. dmidecode https://bugzilla.redhat.com/attachment.cgi?id=1458090 3. dmesg contents before and during xHCI controller problem (with enabled dyndbg for xhci_hcd) https://bugzilla.redhat.com/attachment.cgi?id=1458088 Architecture: x86-64 Kernel Version: 4.17.3 Fedora's Bugzilla link: https://bugzilla.redhat.com/show_bug.cgi?id=1600126 -Alexey��.n��������+%������w��{.n�����{���)�� jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
