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Date:      Wed, 3 May 2023 15:24:42 -0700
From:      Michael Dexter <editor@callfortesting.org>
To:        freebsd-current@freebsd.org
Subject:   Boot failure on a ThinkPad T14/Ryzen 7 Pro 6850U
Message-ID:  <8267eee1-e5f6-d1f2-6fc0-b759d0c91bcc@callfortesting.org>

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Hello all!

I confess that this issue exists on 13.1 and 13.2 in addition to the 
14-CURRENT snapshot from last week but hopefully there is more to try.

This Pr covers the fundamental issue and I have been updating it a I try 
suggestions:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=270707

In short, stock kernels, non-verbose stop at:

...
psm0: model Generic PS/2 mouse, device ID 0
battery0: <ACPI Control Method Battery> on acpi0
acpi_acad0: <AD Adapter> on acpi0
<Block cursor, no blink, keyboard input ignored>

A verbose boot stops at:

...
pcib0: allocated type 4 (0x3f8-0x3f8) for rid 0 of uart0
uart0 failed to probe at port 0x3f8 irq 4 on isa0
pcib0: allocated type 4 (0x2f8-0x2f8) for rid 0 of uart1
<Block cursor, no blink, keyboard input ignored, no mention of acpi_acad0>

A kernel built with options ACPI_DEBUG with these boot parameters:

set debug.acpi.layer="ACPI_ALL_COMPONENTS ACPI_ALL_DRIVERS"
set debug.acpi.level="ACPI_LV_ALL_EXCEPTIONS"

Stops at:

...
  exregion-059 ExSystemMemorySpaceHan: System-Memory (width 8) R/W 0 
Address=00000000777770F3
...
  nsxfeval-0386 EvaluateObject     : Null handle with relative pathname 
[_PRW] nsxfeval-0386 EvaluateObject...

Related suggestion: Should 'options	ACPI_DEBUG' be built into the 
snapshot kernels along with WITNESS etc?

Any additional suggestions?

Thank you!

Michael



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