This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed- bionic'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem in Ubuntu. 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: Triaged 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 <erik.schma...@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. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1819921/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp