Compare the kernel related usb logs between keyboard detected and not, all previous logs are no difference, it began difference only from. I personally thought it might not issues from kernel as it likes external device (keyboad) didn't report devices information back and from testing log it sees just 16% reboot were failed to detect keyboard.
no-keyboard: Feb 25 20:56:06 13.639502] xhci_hcd 0000:00:14.0: Host supports USB 3.0 SuperSpeed *Feb 25 20:56:06 13.703568] usb usb1-port2: couldn't allocate usb_device *Feb 25 20:56:06 13.769363] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.03 Feb 25 20:56:06 13.900828] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 Feb 25 20:56:06 13.968612] usb usb2: Product: xHCI Host Controller Feb 25 20:56:06 14.027356] usb usb2: Manufacturer: Linux 5.3.0-28-generic xhci-hcd Feb 25 20:56:06 14.079505] usb usb2: SerialNumber: 0000:00:14.0 with-keyboard: Feb 25 14:58:11 17.021871] xhci_hcd 0000:00:14.0: Host supports USB 3.0 SuperSpeed *Feb 25 14:58:11 17.021903] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.03 Feb 25 14:58:11 17.212935] usb 1-2: new low-speed USB device number 2 using xhci_hcd Feb 25 14:58:11 17.220801] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 Feb 25 14:58:11 17.220803] usb usb2: Product: xHCI Host Controller Feb 25 14:58:11 17.220803] usb usb2: Manufacturer: Linux 5.3.0-28-generic xhci-hcd Feb 25 14:58:11 17.220804] usb usb2: SerialNumber: 0000:00:14.0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1869138 Title: The keyboard does not have responeded when boot system into Ubuntu 18.04.4 with HWE(Legacy Mode) on Quanta server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1869138/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
