Public bug reported:
[Impact]
Some systems boot failed at a very early stage, only blackscreen shown.
[Fix]
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.
execute all acpi tables to make system work properly.
[Test]
Tested on several laptops, the laptop that failed to boot boots well.
Other laptops still works fine.
[Regression Potential]
Upstream fix. Low risk.
Backported changes is one line of debug ouput sentence in nsparse.c:
s/Start table execution pass/Start load pass/
Verified on several laptops. Fix boot failure and no regression found.
** Affects: hwe-next
Importance: Critical
Assignee: AaronMa (mapengyu)
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: originate-from-1819416 sutton
** Tags added: originate-from-1819416 sutton
** Changed in: hwe-next
Assignee: (unassigned) => AaronMa (mapengyu)
** Changed in: hwe-next
Importance: Undecided => Critical
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https://bugs.launchpad.net/bugs/1819921
Title:
[SRU] [B/OEM] Fix ACPI bug that causes boot failure
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