The problem with these acer laptops seems to be that the "flat" APIC mode is used instead of "physical flat".With "physical flat" model acpi works fine and acpi tables seem to load successfully, you can later optionally remap the ivrs tables without hanging.Would it be possible to have a switch like a kernel parameter that skips autodetection of APIC model and let us choose the preffered one?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1776563 Title: Acer Aspire A315 IOAPIC failure on Ubuntu 18.04, kernel hangs, can't load, kernel freeze (AMD Ryzen 5/Radeon/Raven) / AMDGPU Hybrid crash To manage notifications about this bug go to: https://bugs.launchpad.net/amd/+bug/1776563/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
