** Changed in: linux (Ubuntu Bionic)
Status: Triaged => Fix Committed
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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
Status in linux-oem package in Ubuntu:
New
Status in linux source package in Bionic:
Fix Committed
Status in linux-oem source package in Bionic:
Fix Committed
Bug description:
V2:
Fix non-x86 building error.
[Impact]
Some lenovo laptops failed to boot 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.
add a quirk for these laptops to execute all acpi tables and
make system work properly.
[Test]
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 <[email protected]>
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
it.
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