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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https://bugs.launchpad.net/bugs/1861344

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

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