This is happening to me on a ThinkPad E495 with AMD chipset and no docking station, with Ubuntu LTS 20, kernel 5.11.0-40-generic (latest HWE), for example on inserting an USB mouse:
Nov 11 19:00:52 cyme upowerd[2469]: treating change event as add on /sys/devices/pci0000:00/0000:00:08.1/0000:05:00.3/usb1/1-4 Nov 11 19:00:52 cyme kernel: usb usb1-port4: disabled by hub (EMI?), re-enabling... Nov 11 19:00:52 cyme kernel: usb 1-4: USB disconnect, device number 18 Nov 11 19:00:52 cyme kernel: usb 1-4: new low-speed USB device number 19 using xhci_hcd Nov 11 19:01:03 cyme kernel: xhci_hcd 0000:05:00.3: xHCI host not responding to stop endpoint command. Nov 11 19:01:03 cyme kernel: [43B blob data] Nov 11 19:01:03 cyme kernel: xhci_hcd 0000:05:00.3: xHCI host controller not responding, assume dead Nov 11 19:01:03 cyme kernel: xhci_hcd 0000:05:00.3: HC died; cleaning up Nov 11 19:01:03 cyme kernel: usb usb1-port4: couldn't allocate usb_device The workaround described in comment #22 above, to unbind and then bind the devices, works for me too. Weird. It did not seem to happen with earlier recent kernel version, but not sure when i started to happen. -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
