Comment 313 for bug 1776563
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f33e652
(Get the code!)
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?