@udippel What project do I need to file the bug into? Their site is
confusing me.

Or if you opened a bug yourself, I could piggyback onto it.

I also tried some more things today (check askubuntu) and none of it
worked.

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https://bugs.launchpad.net/bugs/1712508

Title:
  Disappearing screen and flickering after upgrade to 16.04

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I have two Lenovo T410s that I upgraded from 14.04 to 16.04.
  Since then, one is working fine while the other shows mainly an ever 
disappearing screen and flickering.

  I have asked here: 
https://askubuntu.com/questions/947233/i-upgraded-from-kubuntu-14-04-lts-to-16-04-lts-and-now-my-screen-shows-up-and-di?noredirect=1#comment1506995_947233
  I also found I am not the only one: 
https://askubuntu.com/questions/927407/flickering-screen-with-intel-graphics-on-ubuntu-17-04?noredirect=1#comment1507937_927407
  The latter has tried pretty much that could be tried already, to no avail.

  I think that I can help with this problem, since my two T410s are
  identical in hard- and software, including BIOS, except that one is a
  type 2924 (with NVIDIA-card, though disabled in the BIOS), and the
  other one is a 2904 (without NVIDIA card).

  I have checked for differences at boot time and found DMAR as major 
difference:
  T410s, 2924: [ 0.335616] DMAR: Disabling batched IOTLB flush on Ironlake
  T410s, 2904: [ 0.355681] DMAR: BIOS has allocated no shadow GTT; disabling 
IOMMU for graphics 

  Should this be initially at the root of the problem, I'd consider the
  kernel package as responsible, therefore I marked it as above.

  The outputs of lspci -k | grep -EA3 'VGA|3D|Display' are identical to
  the point.

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