There are many USB/UVC commits between these two versions. Please run a
kernel bisection:


$ sudo apt build-dep linux
$ git clone 
git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/xenial
$ cd linux
$ git bisect start
$ git bisect good Ubuntu-4.4.0-170.199
$ git bisect bad Ubuntu-4.4.0-171.200
$ make localmodconfig
$ make -j`nproc` deb-pkg
Install the newly built kernel, then reboot with it.
If it still have the same issue,
$ git bisect bad
Otherwise,
$ git bisect good
Repeat to "make -j`nproc` deb-pkg" until you find the offending commit.

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1861344

Title:
  uvcvideo: IPEVO Ziggi-HD document camera stops working on kernel
  4.4.0-171

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have a IPEVO Ziggi-HD document camera (1778:0207) that refuses to
  operate on kernel 4.4.0-171 or newer. On such kernels, uvcvideo fails
  with the kernel message 'uvcvideo: No streaming interface found for
  terminal 2' and no `/dev/videoX` device is created.

  The camera operates correctly on kernel 4.4.0-170.

  Ubuntu release: 16.04.6 LTS

  Attached in a tarball:

  * a relevant /var/log/syslog fragment captured when device plugged in
  * `cat /proc/version_signature`
  * `sudo lspci -vnvn`

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