Hi Mathias, hi all, (please cc, thanks) > Patch in link below resolved another case with similar log. > Does it help in your case? Unfortunately not, happened again after redirecting a web cam to a virtual machine, then removing the redirection and shutting down the VM. After that, boom. Nov 18 09:49:37 bulldog systemd-machined[1806]: Machine qemu-3-FujitsuWin10 terminated. Nov 18 09:49:43 bulldog kernel: xhci_hcd 0000:00:14.0: Abort failed to stop command ring: -110 Nov 18 09:49:43 bulldog kernel: xhci_hcd 0000:00:14.0: xHCI host controller not responding, assume dead Nov 18 09:49:43 bulldog kernel: xhci_hcd 0000:00:14.0: HC died; cleaning up Nov 18 09:49:43 bulldog kernel: xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command Nov 18 09:49:43 bulldog kernel: xhci_hcd 0000:00:14.0: xHCI host not responding to stop endpoint command. Nov 18 09:49:43 bulldog kernel: xhci_hcd 0000:00:14.0: USBSTS: HCHalted EINT After that, I logged into the machine via ssh, and send unbind / bind requests: echo -n "0000:14:00.0" > /sys/bus/pci/drivers/xhci_hcd/unbind gave Nov 18 09:54:48 bulldog kernel: xhci_hcd 0000:00:14.0: remove, state 4 Nov 18 09:54:48 bulldog kernel: usb usb2: USB disconnect, device number 1 Nov 18 09:54:48 bulldog kernel: xhci_hcd 0000:00:14.0: USB bus 2 deregistered Nov 18 09:54:48 bulldog kernel: xhci_hcd 0000:00:14.0: remove, state 1 Nov 18 09:54:48 bulldog kernel: usb usb1: USB disconnect, device number 1 Nov 18 09:54:48 bulldog kernel: xhci_hcd 0000:00:14.0: USB bus 1 deregistered and then echo -n "0000:14:00.0" > /sys/bus/pci/drivers/xhci_hcd/bind gave Nov 18 09:55:00 bulldog kernel: xhci_hcd 0000:00:14.0: xHCI Host Controller Nov 18 09:55:00 bulldog kernel: xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 1 Nov 18 09:55:00 bulldog kernel: xhci_hcd 0000:00:14.0: hcc params 0x200077c1 hci version 0x100 quirks 0x0000000001109810 ... then it adds a few devices without any problem, until it comes to here: Nov 18 09:55:01 bulldog kernel: usb 1-11: new high-speed USB device number 4 using xhci_hcd Nov 18 09:55:01 bulldog kernel: usb 1-11: New USB device found, idVendor=2109, idProduct=2817, bcdDevice= 6.33 Nov 18 09:55:01 bulldog kernel: usb 1-11: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Nov 18 09:55:01 bulldog kernel: usb 1-11: Product: USB2.0 Hub Nov 18 09:55:01 bulldog kernel: usb 1-11: Manufacturer: VIA Labs, Inc. Nov 18 09:55:01 bulldog kernel: hub 1-11:1.0: USB hub found Nov 18 09:55:01 bulldog kernel: hub 1-11:1.0: 4 ports detected I think this is my monitor (Fujitsu) with integrated USB hub. There mouse and kbd are connected, but while doing some stuff it departs again into dead land: Nov 18 09:55:01 bulldog kernel: usb 1-12: new high-speed USB device number 5 using xhci_hcd Nov 18 09:55:07 bulldog kernel: usb 1-12: device descriptor read/64, error -110 Nov 18 09:55:22 bulldog kernel: usb 1-12: device descriptor read/64, error -110 Nov 18 09:55:22 bulldog kernel: usb 1-11.1: new high-speed USB device number 6 using xhci_hcd Nov 18 09:55:23 bulldog kernel: usb 1-11.1: New USB device found, idVendor=2109, idProduct=2817, bcdDevice= 6.23 Nov 18 09:55:23 bulldog kernel: usb 1-11.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Nov 18 09:55:23 bulldog kernel: usb 1-11.1: Product: USB2.0 Hub Nov 18 09:55:23 bulldog kernel: usb 1-11.1: Manufacturer: VIA Labs, Inc. Nov 18 09:55:23 bulldog kernel: hub 1-11.1:1.0: USB hub found Nov 18 09:55:23 bulldog kernel: hub 1-11.1:1.0: 4 ports detected Nov 18 09:55:23 bulldog kernel: usb 1-12: new high-speed USB device number 7 using xhci_hcd Nov 18 09:55:28 bulldog kernel: usb 1-12: device descriptor read/64, error -110 Nov 18 09:55:44 bulldog kernel: usb 1-12: device descriptor read/64, error -110 Nov 18 09:55:44 bulldog kernel: usb usb1-port12: attempt power cycle Nov 18 09:55:44 bulldog kernel: usb 1-11.2: new full-speed USB device number 8 using xhci_hcd Nov 18 09:55:44 bulldog kernel: usb 1-11.2: device descriptor read/64, error -32 Nov 18 09:55:44 bulldog kernel: usb 1-11.2: New USB device found, idVendor=062a, idProduct=4102, bcdDevice= 1.03 Nov 18 09:55:44 bulldog kernel: usb 1-11.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Nov 18 09:55:44 bulldog kernel: usb 1-11.2: Product: 2.4G Wireless Mouse Nov 18 09:55:44 bulldog kernel: usb 1-11.2: Manufacturer: MOSART Semi. Nov 18 09:55:44 bulldog kernel: input: MOSART Semi. 2.4G Wireless Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-11/1-11.2/1-11.2:1.0/> Nov 18 09:55:44 bulldog kernel: input: MOSART Semi. 2.4G Wireless Mouse Consumer Control as /devices/pci0000:00/0000:00:14.0/usb1/1-11/1> Nov 18 09:55:44 bulldog kernel: input: MOSART Semi. 2.4G Wireless Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-11/1-11.2/1-11.2:1.0/> Nov 18 09:55:44 bulldog kernel: hid-generic 0003:062A:4102.000A: input,hiddev1,hidraw2: USB HID v1.10 Mouse [MOSART Semi. 2.4G Wireless > Nov 18 09:55:44 bulldog kernel: usb 1-11.1.2: new high-speed USB device number 9 using xhci_hcd Nov 18 09:55:45 bulldog kernel: usb 1-11.1.2: New USB device found, idVendor=0bda, idProduct=8153, bcdDevice=31.01 Nov 18 09:55:45 bulldog kernel: usb 1-11.1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=6 Nov 18 09:55:45 bulldog kernel: usb 1-11.1.2: Product: USB 10/100/1000 LAN Nov 18 09:55:45 bulldog kernel: usb 1-11.1.2: Manufacturer: Realtek Nov 18 09:55:45 bulldog kernel: usb 1-11.1.2: SerialNumber: 101000001 Nov 18 09:55:45 bulldog kernel: usb 1-12: new high-speed USB device number 10 using xhci_hcd Nov 18 09:55:55 bulldog kernel: xhci_hcd 0000:00:14.0: Abort failed to stop command ring: -110 Nov 18 09:55:55 bulldog kernel: xhci_hcd 0000:00:14.0: xHCI host controller not responding, assume dead Nov 18 09:55:55 bulldog kernel: xhci_hcd 0000:00:14.0: HC died; cleaning up Nov 18 09:55:55 bulldog kernel: xhci_hcd 0000:00:14.0: Timeout while waiting for setup device command Nov 18 09:55:56 bulldog kernel: usb 1-12: device not accepting address 10, error -108 Nov 18 09:55:56 bulldog kernel: usb usb1-port12: couldn't allocate usb_device Nov 18 09:55:56 bulldog kernel: usb 1-3: USB disconnect, device number 2 Nov 18 09:55:56 bulldog kernel: usb 1-11-port4: couldn't allocate usb_device Nov 18 09:55:56 bulldog kernel: usb 1-11.1-port3: couldn't allocate usb_device Nov 18 09:55:56 bulldog kernel: usb 1-7: USB disconnect, device number 3 Nov 18 09:55:56 bulldog kernel: usb 1-11: USB disconnect, device number 4 Nov 18 09:55:56 bulldog kernel: usb 1-11.1: USB disconnect, device number 6 Nov 18 09:55:56 bulldog kernel: usb 1-11.1.2: USB disconnect, device number 9 Nov 18 09:55:56 bulldog kernel: usb 1-11.2: USB disconnect, device number 8 More information: when shutting down the system, it failed to turn of the computer (systemctl halt), but screen went off, all services stopped, and at the end the machine was just brrmmming away with me not having an idea what it is doing. Hard reset. First reboot gave no useable mouse/kbd. Shutdown/wait/boot - all back to normal. Any suggestion? I compile all my kernels (currently 5.15.2), so any patch can be tested. (Please cc, thanks) Thanks a lot Norbert -- PREINING Norbert https://www.preining.info Fujitsu Research + IFMGA Guide + TU Wien + TeX Live + Debian Dev GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13