Here are my findings with that kernel:

- My network connections don't work anymore. Could be a side effect of 
something else so I'll ignore it.
- Chrome and Chromium do pick up the device now. With (offline) Hangouts in 
Chrome, "Play test sound" doesn't play any audio. Chromium does play it through 
the speaker so I'm guessing it's more of a Chrome issue.
- I do still get errors in `dmesg`:

  [  113.490781] usb 3-1: new full-speed USB device number 7 using xhci_hcd
  [  113.732898] usb 3-1: New USB device found, idVendor=047f, idProduct=c02f
  [  113.732903] usb 3-1: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
  [  113.732906] usb 3-1: Product: Plantronics P610
  [  113.732909] usb 3-1: Manufacturer: Plantronics
  [  113.732911] usb 3-1: SerialNumber: D21FA3D2B38C144D91AF207D0A9A030D
  [  114.377183] input: Plantronics Plantronics P610 as 
/devices/pci0000:00/0000:00:14.0/usb3/3-1/3-1:1.3/0003:047F:C02F.0004/input/input20
  [  114.395822] usb 3-1: 1:1: cannot get freq at ep 0x81
  [  114.397515] usb 3-1: 2:1: cannot get freq at ep 0x1
  [  114.410705] usbcore: registered new interface driver snd-usb-audio
  [  114.428427] usb 3-1: 2:1: cannot get freq at ep 0x1
  [  114.434951] plantronics 0003:047F:C02F.0004: input,hiddev0,hidraw3: USB 
HID v1.11 Device [Plantronics Plantronics P610] on usb-0000:00:14.0-1/input3

If those errors are expected, I think this can be closed.

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https://bugs.launchpad.net/bugs/1719853

Title:
  Plantronics P610 does not support sample rate reading

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  As per
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1622763/comments/29
  and https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1709282 , I
  believe the USB ID 0x047F 0xC02F needs to be added to quirks.c in
  order for me to use my Plantronics P610. Thanks!

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