This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1819921
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1819921
Title:
[SRU] [B/OEM] Fix ACPI bug that causes boot failure
Status in HWE Next:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
[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.
This patch is from 4.17-rc1, so only Bionic/OEM 4.15 kernels need it.
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