Hello. Dell Pro Wireless Keyboard and Mouse KM5221W constantly reconnect with a following error messages: kernel: usb 1-1: USB disconnect, device number 28 acpid[762]: input device has been disconnected, fd 20 acpid[762]: input device has been disconnected, fd 21 acpid[762]: input device has been disconnected, fd 22 kernel: usb 1-1: new full-speed USB device number 29 using xhci_hcd kernel: usb 1-1: New USB device found, idVendor=413c, idProduct=4503, bcdDevice= 2.40 kernel: usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 kernel: usb 1-1: Product: Dell Universal Receiver kernel: usb 1-1: Manufacturer: Dell Computer Corp kernel: input: Dell Computer Corp Dell Universal Receiver as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/0003:413C:4503.000D/input/input35 kernel: hid-generic 0003:413C:4503.000D: input,hidraw4: USB HID v1.11 Keyboard [Dell Computer Corp Dell Universal Receiver] on usb-0000:00:14.0-1/input0 kernel: input: Dell Computer Corp Dell Universal Receiver Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.1/0003:413C:4503.000E/input/input36 kernel: input: Dell Computer Corp Dell Universal Receiver Consumer Control as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.1/0003:413C:4503.000E/input/input37 dbus-daemon[1442]: [session uid=1000 pid=1442] Activating service name='org.xfce.Xfconf' requested by ':1.2053' (uid=1000 pid=271244 comm="/usr/bin/Thunar --daemon") kernel: input: Dell Computer Corp Dell Universal Receiver System Control as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.1/0003:413C:4503.000E/input/input38 kernel: hid-generic 0003:413C:4503.000E: input,hidraw5: USB HID v1.11 Mouse [Dell Computer Corp Dell Universal Receiver] on usb-0000:00:14.0-1/input1 kernel: hid-generic 0003:413C:4503.000F: hiddev1,hidraw6: USB HID v1.11 Device [Dell Computer Corp Dell Universal Receiver] on usb-0000:00:14.0-1/input2 A patch similar to https://marc.info/?l=linux-usb&m=149675002229952&w=2 resolves the issue (tested via the GRUB kernel options override). Please add HID_QUIRK_ALWAYS_POLL patch for the 413C:4503 device into the kernel. Thanks.
