[138a:0091] Please support Validity Sensors reader

[nidget]

This sensor is used on Dell XPS 13 and Dell XPS 15 9560 (2017 model) laptops.
It's not recognized yet.

> lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 04f3:24a1 Elan Microelectronics Corp.
Bus 001 Device 003: ID 138a:0091 Validity Sensors, Inc.
Bus 001 Device 002: ID 0cf3:e300 Atheros Communications, Inc.
Bus 001 Device 005: ID 0c45:6713 Microdia
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: libfprint0/zesty 1:0.6.0-2build1 amd64
Uname: Linux 4.10.0-33-generic x86_64
CurrentDesktop: Gnome

[nidget (nidget)]

sudo lsusb -s 001:003 -v

Bus 001 Device 003: ID 138a:0091 Validity Sensors, Inc.
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 2.00
  bDeviceClass 255 Vendor Specific Class
  bDeviceSubClass 16
  bDeviceProtocol 255
  bMaxPacketSize0 8
  idVendor 0x138a Validity Sensors, Inc.
  idProduct 0x0091
  bcdDevice 1.64
  iManufacturer 0
  iProduct 0
  iSerial 1 c81aa800a52d
  bNumConfigurations 1
  Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 53
    bNumInterfaces 1
    bConfigurationValue 1
    iConfiguration 0
    bmAttributes 0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower 100mA
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 0
      bAlternateSetting 0
      bNumEndpoints 5
      bInterfaceClass 255 Vendor Specific Class
      bInterfaceSubClass 0
      bInterfaceProtocol 0
      iInterface 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x01 EP 1 OUT
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x81 EP 1 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x82 EP 2 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x83 EP 3 IN
        bmAttributes 3
          Transfer Type Interrupt
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0008 1x 8 bytes
        bInterval 4
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x84 EP 4 IN
        bmAttributes 3
          Transfer Type Interrupt
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0010 1x 16 bytes
        bInterval 10
Device Status: 0x0000
  (Bus Powered)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Ivan Masich (w3cvalid)]

I have same problem on my Dell XPS 15 9560 (2017 model), if you need any help like testing, providing debug data and so on, I'm open for such activities.

[nidget (nidget)]

See also this reverse engineering project: https://github.com/hmaarrfk/Validity91

[Marco Trevisan (Treviño) (3v1n0)]

Drivers requests are upstream bugs and as such should be redirected to the official wiki

 - https://gitlab.freedesktop.org/libfprint/wiki/-/wikis/Unsupported-Devices

As per this, I'm closing all the requests, I please you to update that wiki page if needed.