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[Bug 1483320] Re: Migrate Broadwell to use i915_bpo


I'm not able to reproduce the VGA issue on a BDW-H sdp hooked to my TV

can you try mainline builds to see if they behave the same? start from

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  Migrate Broadwell to use i915_bpo

Status in linux package in Ubuntu:
Status in linux source package in Vivid:
  In Progress

Bug description:
  There are several bugs affecting Broadwell generation graphics in the
  vivid kernel (3.19), but not found in 4.2rc which i915_bpo module is
  based on. In order to support our OEM partners (and other BDW users)
  it would make sense to migrate BDW to use i915_bpo instead.

  The known (public) bugs this would fix are:

  - screen is black after xrandr rotate command

  - changing the VT causes flicker

  - GPU hangs on resume
  (and dupes, which I believe there are several of)

  - and some OEM machines can't always hotplug the HDMI output (no
  public bug AIUI)

  the migration should not be too risky, since i915_bpo is already used
  for Braswell which is same generation as (=based on) BDW.

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