Kai-Heng Feng (kaihengfeng):
>Is the webcam firmware upgradable under Linux? I can't reproduce the issue on 
>the XPS 9370 at my hand >because it's with older firmware.

As far as I can tell the only way to upgrade the firmware is to
completely change the screen, at least this is what Dell is doing for
the users that report the issue. This is the new XPS 13 9370 laptop that
they started selling at the end of January 2018. And instead of
upgrading, they downgrade from version 1.50 to 1.00.

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  Integrated Webcam Realtek Integrated_Webcam_HD (0bda:58f4) not working
  in DELL XPS 13 9370 with firmware 1.50

Status in Dell Sputnik:
Status in linux package in Ubuntu:

Bug description:
  The webcam is detected by the system, but no applications detect it.

  sudo lsusb -v: (relevant part)
  Bus 001 Device 002: ID 0bda:58f4 Realtek Semiconductor Corp.
  Device Descriptor:
    bLength                18
    bDescriptorType         1
    bcdUSB               2.01
    bDeviceClass          239 Miscellaneous Device
    bDeviceSubClass         2 ?
    bDeviceProtocol         1 Interface Association
    bMaxPacketSize0        64
    idVendor           0x0bda Realtek Semiconductor Corp.
    idProduct          0x58f4
    bcdDevice           72.79
    iManufacturer           3 CN0FFMHCLOG0081SB0M1A01
    iProduct                1 Integrated_Webcam_HD
    iSerial                 2 200901010001

  In syslog (firmware can be seen in first line - 1.50):
  Apr 13 12:36:25 XPS-13-9370 kernel: [    2.126546] uvcvideo: Found UVC 1.50 
device Integrated_Webcam_HD (0bda:58f4)
  Apr 13 12:36:25 XPS-13-9370 kernel: [    2.126908] usbcore: registered new 
interface driver btusb
  Apr 13 12:36:25 XPS-13-9370 kernel: [    2.127128] uvcvideo: UVC non 
compliance - GET_DEF(PROBE) not supported. Enabling workaround.
  Apr 13 12:36:25 XPS-13-9370 kernel: [    2.127462] uvcvideo: Failed to query 
(129) UVC probe control : -75 (exp. 34).
  Apr 13 12:36:25 XPS-13-9370 kernel: [    2.127464] uvcvideo: Failed to 
initialize the device (-5).
  Apr 13 12:36:25 XPS-13-9370 kernel: [    2.128061] uvcvideo: Unknown video 
format 00000032-0002-0010-8000-00aa00389b71
  Apr 13 12:36:25 XPS-13-9370 kernel: [    2.128065] uvcvideo: Found UVC 1.50 
device Integrated_Webcam_HD (0bda:58f4)

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-13-generic 4.15.0-13.14 [modified: 
  ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
  Uname: Linux 4.15.0-13-generic x86_64
  ApportVersion: 2.20.9-0ubuntu4
  Architecture: amd64
   /dev/snd/controlC0:  wgarcia    2145 F.... pulseaudio
  CurrentDesktop: Unity:Unity7:ubuntu
  Date: Fri Apr 13 16:59:02 2018
  HibernationDevice: RESUME=UUID=a6f64150-e0a5-4c6b-9097-b8f98b14bdcc
  InstallationDate: Installed on 2018-04-09 (4 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180408)
  MachineType: Dell Inc. XPS 13 9370
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-13-generic.efi.signed 
root=UUID=226e4127-5c15-4a18-8062-74ba83b57515 ro quiet splash vt.handoff=1
   linux-restricted-modules-4.15.0-13-generic N/A
   linux-backports-modules-4.15.0-13-generic  N/A
   linux-firmware                             1.173
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/21/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.2.1
  dmi.board.name: 0F6P3V
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.product.family: XPS
  dmi.product.name: XPS 13 9370
  dmi.sys.vendor: Dell Inc.

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