The bisect reported the following as the first bad commit:

commit b1b38278e12b04cf9a227f6af2c24651cf6e8a85
Author: David Weinehall <>
Date:   Wed May 20 17:00:13 2015 +0300

    drm/i915: add a context parameter to {en, dis}able zero address

I built a Xenial test kernel with this commit reverted.  The test kernel can be 
downloaded from:

Can you test that kernel and report back if it has the bug or not?

Note, to test this kernel, you need to install both the linux-image adn
linux-image-extra .deb packages.

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  Kernels 4.3-4.8 result in blackscreen - Intel Ivybridge

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