** Description changed: + 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.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1819921 Title: [SRU] [B/OEM] Fix ACPI bug that causes boot failure To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1819921/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
