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bionic' to 'verification-done-bionic'. If the problem still exists,
change the tag 'verification-needed-bionic' to 'verification-failed-

If verification is not done by 5 working days from today, this fix will
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** Tags added: verification-needed-bionic

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  [SRU] [B/OEM] Fix ACPI bug that causes boot failure

Status in HWE Next:
Status in linux package in Ubuntu:
Status in linux-oem package in Ubuntu:
Status in linux source package in Bionic:
Status in linux-oem source package in Bionic:
  Fix Committed

Bug description:
  Fix non-x86 building error.

  Some lenovo laptops failed to boot at a very early stage, only blackscreen 

  Some system BIOS set definition in if statement, it would be deferred to
  be loaded.
  Some devices would not work properly and cause a system lockup.
  add a quirk for these laptops to execute all acpi tables and
  make system work properly.

  Tested on several laptops, the laptop that failed to boot boots well.
  Other laptops still works fine.

  [Regression Potential]
  SAUCE patch.Low, specific changes depends on hardware.

  Upstream fix:

  commit 5a8361f7ecceaed64b4064000d16cb703462be49
  Author: Schmauss, Erik <>
  Date:   Thu Feb 15 13:09:30 2018 -0800

      ACPICA: Integrate package handling with module-level code

  Due to the lots of changes in this commit and other regressions concern
  So made a sauce patch in Bionic kernel with the specific BIOS series.
  Verified on several laptops. Fix boot failure and no regression found.

  The upstream fix is in 4.17-rc1, so only Bionic/OEM 4.15 kernels need

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