Bug#841275: linux: Logitech Unifying Receiver shows devices that aren't connected

[Trent Gamblin <trent@gamblin.ca>]

Source: linux
Severity: normal

Dear Maintainer,

I have a PC with a mouse connected by a Logitech Unifying Receiver, and
an Android TV box with a keyboard connected by a separate Unifying
Receiver.  The keyboard shows up on the Linux box with a message in
dmesg:

[    3.120080] usb 5-2.1: new high-speed USB device number 5 using
xhci_hcd
[    3.124336] usb 5-1.2: New USB device found, idVendor=046d,
idProduct=c52b
[    3.124340] usb 5-1.2: New USB device strings: Mfr=1, Product=2,
SerialNumber=0
[    3.124343] usb 5-1.2: Product: USB Receiver
[    3.124345] usb 5-1.2: Manufacturer: Logitech
[    3.136292] logitech-djreceiver 0003:046D:C52B.0004: hiddev0,hidraw1:
USB HID v1.11 Device [Logitech USB Receiver] on
usb-0000:0e:00.0-1.2/input2
[    3.160384] usb 2-3: new SuperSpeed USB device number 3 using
xhci_hcd
[    3.190438] usb 2-3: device descriptor read/8, error -71
[    3.221096] usb 5-2.1: New USB device found, idVendor=03f0,
idProduct=7317
[    3.221099] usb 5-2.1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[    3.221102] usb 5-2.1: Product: HP LaserJet P3005
[    3.221104] usb 5-2.1: Manufacturer: Hewlett-Packard
[    3.221106] usb 5-2.1: SerialNumber: CNR1N17173
[    3.266438] input: Logitech Performance MX as
/devices/pci0000:00/0000:00:1c.4/0000:0e:00.0/usb5/5-1/5-1.2/5-1.2:1.2/0003:046D:C52B.0004/0003:046D:101A.0005/input/input3
[    3.266819] logitech-hidpp-device 0003:046D:101A.0005: input,hidraw2:
USB HID v1.11 Mouse [Logitech Performance MX] on usb-0000:0e:00.0-1.2:1
[    3.272667] input: Logitech K400 Plus as
/devices/pci0000:00/0000:00:1c.4/0000:0e:00.0/usb5/5-1/5-1.2/5-1.2:1.2/0003:046D:C52B.0004/0003:046D:404D.0006/input/input4
[    3.273252] logitech-hidpp-device 0003:046D:404D.0006: input,hidraw3:
USB HID v1.11 Keyboard [Logitech K400 Plus] on usb-0000:0e:00.0-1.2:2

It also shows up in the battery applet in Mate.

I think either the kernel or the applet should ignore it since it's not
plugged into the PC (it doesn't actually work BTW.)

Problem exists in 4.7.0 and up to the latest kernel I could find which 
was 4.8.0-rc8.

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.8.0-rc8-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)