UN-APPLIED[Bionic/master-next]: [PATCH 0/1] [SRU][B/B-OEM] UBUNTU: SAUCE: Fix ACPI bug that causes boot failure

[Stefan Bader]

On 28.03.19 07:09, Khaled Elmously wrote:
> Applied to both repos, fixed bug nominations
> 
> On 2019-03-22 16:34:25 , Aaron Ma wrote:
>> BugLink: https://bugs.launchpad.net/bugs/1819921
>>
>> [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.

Un-applied and rejected for now from Bionic because it breaks the arm64 build:

https://kernel.ubuntu.com/~kernel-ppa/test-build/bionic/linux/LP%231819921--a7d4ac35125c1e1288d38931a3be9cfa6baa627f/arm64.log

-Stefan

>>
>> Upstream fix:
>>
>> commit 5a8361f7ecceaed64b4064000d16cb703462be49
>> Author: Schmauss, Erik <erik.schmauss at intel.com>
>> 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.
>>
>> Aaron Ma (1):
>>   UBUNTU: SAUCE: ACPI / bus: Add some Lenovo laptops in list of acpi
>>     table term list
>>
>>  drivers/acpi/bus.c | 30 ++++++++++++++++++++++++++++++
>>  1 file changed, 30 insertions(+)
>>
>> -- 
>> 2.17.1
>>
>>
>> -- 
>> kernel-team mailing list
>> kernel-team at lists.ubuntu.com
>> https://lists.ubuntu.com/mailman/listinfo/kernel-team
> 


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