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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
utopic' to 'verification-done-utopic'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-utopic

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https://bugs.launchpad.net/bugs/1384469

Title:
  [i915_bdw] GPU hang bug, typo fix

Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Trusty:
  Fix Released
Status in linux source package in Utopic:
  Fix Committed

Bug description:
  With the current kernel there's a way to make the GPU hang:

  - suspend from login screen
  - resume
  -> GPU is non-fatally hung, until logging in essentially hangs the machine since Unity fails to fully start

  upstream commit 6689c167ae14c312972e fixed it, the original non-
  rebased version from intel-gfx@ list was backported because it was
  easier.

  Also, commit fa008cd37392160f9 was cleanly cherry-picked and contained
  a function argument type which doesn't exist on our kernel. It needs
  to be renamed back to what it used to be and still is on our kernel.
  This caused compiler warnings that had gone unnoticed until now.

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