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[Niklas Holm <1508978@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

So,

My wireless Logitech keyboard with unified receiver is not working
(again!) after installing the Vivid LTS Enablement Stack on Trusty, thus
stepping up from kernel 3.13.0-65-generic to 3.19.0-31-generic.

I got stuck at the LUKS-prompt, so I rebooted in text-mode (it works
fine in the GRUB menu); when I  removed the USB receiver and reinsert
it, I get this output:

[     89.250799] usb 1-10: new full-speed USB device number 3 using xhci_hcd
[     89.380936] usb 1-10: New USB device found, idVendor=046d, idProduct=c52b
[     89.380957] usb 1-10: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[     89.380978] usb 1-10: Product: USB Receiver
[     89.380990] usb 1-10: Manufacturer: Logitech
[     89.385703] logitech-djreciever 0003:046D:C52B.0007: hiddev0,hidraw0: USB HID v1.11 Device [Logitech USB Reciever] on usb-0000:00:14.0-10/input2

And nothing. Keyboard doesn't work.

After rebooting to 3.13, this is what I can see in dmesg:

[    1.464976] usb 3-10: new full-speed USB device number 2 using xhci_hcd
[    1.483387] usb 3-10: New USB device found, idVendor=046d, idProduct=c52b
[    1.483389] usb 3-10: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    1.483390] usb 3-10: Product: USB Receiver
[    1.483391] usb 3-10: Manufacturer: Logitech
[    1.486128] hidraw: raw HID events driver (C) Jiri Kosina
[    1.490361] usbcore: registered new interface driver usbhid
[    1.490362] usbhid: USB HID core driver
[    1.492216] logitech-djreceiver 0003:046D:C52B.0003: hiddev0,hidraw0: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-10/input2
[    4.966283] input: Logitech Unifying Device. Wireless PID:4024 as /devices/pci0000:00/0000:00:14.0/usb3/3-10/3-10:1.2/0003:046D:C52B.0003/input/input5
[    4.966621] logitech-djdevice 0003:046D:C52B.0004: input,hidraw1: USB HID v1.11 Keyboard [Logitech Unifying Device. Wireless PID:4024] on usb-0000:00:14.0-10:1

It seems to me that the Logitech driver does not detect the unifying
device or the keyboard correctly in 3.19, as it does in 3.13.

This is not the first time this happens, there's a patch that has been
applied and reverted several times, now it seems someone messed up AGAIN
somewhere between 3.13 and 3.19.

Related bug report:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1194649

First patch: https://github.com/torvalds/linux/commit/596264082f10dd4a567c43d4526b2f54ac5520bc
First revert: https://github.com/torvalds/linux/commit/8af6c08830b1ae114d1a8b548b1f8b056e068887
Second revert: https://github.com/torvalds/linux/commit/c63e0e370028d7e4033bd40165f18499872b5183

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: trusty

** Attachment added: "lspci-vnvn.log"
   https://bugs.launchpad.net/bugs/1508978/+attachment/4502464/+files/lspci-vnvn.log

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https://bugs.launchpad.net/bugs/1508978

Title:
  Logitech Unifying Device not detected

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  So,

  My wireless Logitech keyboard with unified receiver is not working
  (again!) after installing the Vivid LTS Enablement Stack on Trusty,
  thus stepping up from kernel 3.13.0-65-generic to 3.19.0-31-generic.

  I got stuck at the LUKS-prompt, so I rebooted in text-mode (it works
  fine in the GRUB menu); when I  removed the USB receiver and reinsert
  it, I get this output:

  [     89.250799] usb 1-10: new full-speed USB device number 3 using xhci_hcd
  [     89.380936] usb 1-10: New USB device found, idVendor=046d, idProduct=c52b
  [     89.380957] usb 1-10: New USB device strings: Mfr=1, Product=2, SerialNumber=0
  [     89.380978] usb 1-10: Product: USB Receiver
  [     89.380990] usb 1-10: Manufacturer: Logitech
  [     89.385703] logitech-djreciever 0003:046D:C52B.0007: hiddev0,hidraw0: USB HID v1.11 Device [Logitech USB Reciever] on usb-0000:00:14.0-10/input2

  And nothing. Keyboard doesn't work.

  After rebooting to 3.13, this is what I can see in dmesg:

  [    1.464976] usb 3-10: new full-speed USB device number 2 using xhci_hcd
  [    1.483387] usb 3-10: New USB device found, idVendor=046d, idProduct=c52b
  [    1.483389] usb 3-10: New USB device strings: Mfr=1, Product=2, SerialNumber=0
  [    1.483390] usb 3-10: Product: USB Receiver
  [    1.483391] usb 3-10: Manufacturer: Logitech
  [    1.486128] hidraw: raw HID events driver (C) Jiri Kosina
  [    1.490361] usbcore: registered new interface driver usbhid
  [    1.490362] usbhid: USB HID core driver
  [    1.492216] logitech-djreceiver 0003:046D:C52B.0003: hiddev0,hidraw0: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-10/input2
  [    4.966283] input: Logitech Unifying Device. Wireless PID:4024 as /devices/pci0000:00/0000:00:14.0/usb3/3-10/3-10:1.2/0003:046D:C52B.0003/input/input5
  [    4.966621] logitech-djdevice 0003:046D:C52B.0004: input,hidraw1: USB HID v1.11 Keyboard [Logitech Unifying Device. Wireless PID:4024] on usb-0000:00:14.0-10:1

  It seems to me that the Logitech driver does not detect the unifying
  device or the keyboard correctly in 3.19, as it does in 3.13.

  This is not the first time this happens, there's a patch that has been
  applied and reverted several times, now it seems someone messed up
  AGAIN somewhere between 3.13 and 3.19.

  Related bug report:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1194649

  First patch: https://github.com/torvalds/linux/commit/596264082f10dd4a567c43d4526b2f54ac5520bc
  First revert: https://github.com/torvalds/linux/commit/8af6c08830b1ae114d1a8b548b1f8b056e068887
  Second revert: https://github.com/torvalds/linux/commit/c63e0e370028d7e4033bd40165f18499872b5183

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