Well there are two problems here

1) Kernel warning:  drm_irq.c:1326 drm_wait_one_vblank+0x191/0x1a0
[drm]().....This is probably due to
https://github.com/torvalds/linux/commit/74c090b1bdc57b1c9f1361908cca5a3d8a80fb08
as stated in https://bugs.freedesktop.org/show_bug.cgi?id=93782

This can be fixed in by appending "video=SVIDEO-1:d" to kernel boot
command.


2) It's this bug which still exists in v4.10-rc7. The possible cause is :

ea0000f0d369a59c2086fe9c489e0a2a86e080ba - drm/i915: Roll out the helper
nonblock tracking.

A patch (https://patchwork.freedesktop.org/patch/128918/) was proposed
to disable it But according to @Jim Rees's comment on the patch they are
not going to push it 4.9 and it may not land for 4.10 either.

So that means I have to manually apply the patch and see if it gets
fixed.

Related bug: https://bugs.freedesktop.org/show_bug.cgi?id=96781

** Bug watch added: freedesktop.org Bugzilla #93782
   https://bugs.freedesktop.org/show_bug.cgi?id=93782

** Bug watch added: freedesktop.org Bugzilla #96781
   https://bugs.freedesktop.org/show_bug.cgi?id=96781

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

** Tags added: kernel-bug-exists-upstream

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https://bugs.launchpad.net/bugs/1659231

Title:
  drm/i915: Unity-control-center (or any other settings module) makes
  the system unresponsive (Unity7, Zesty) for Kernel > 4.6

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