[Bug 2007768] [NEW] [Mac Mini 6,2] ACPI Errors when booting Ubuntu.

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The following warnings and errors significantly delay boot on Mac Mini
6,2 (Intel, late 2012):

DMAR-IR: [Firmware Bug]: ioapic 2 has no mapping iommu, interrupt remapping will be disabled
ACPI Error: Needed type [Reference], found [Integer] 000000002b60be2b (20220331/exresop-66)
[  +0.000000] ACPI Error: AE_AML_OPERAND_TYPE, While resolving operands for [Store] (20220331/dswexec-431)
[  +0.000000] ACPI Error: Aborting method \_PR.CPU0._PDC due to previous error (AE_AML_OPERAND_TYPE) (20220331/psparse-529)

These stay on screen for at least 15 - 25 seconds before actually
booting.

Description:	Ubuntu 22.04.2 LTS
Release:	22.04

The ACPI dump file contains more than 200 errors:

Maximum error count (200) exceeded
Table Input:   acpidump.txt -  211185 bytes      0 fields        0 source lines
Binary Output: (null) -       0 bytes

Compilation failed. 201 Errors, 0 Warnings, 0 Remarks

Examples: ERROR at line 2743: Unterminated quoted string

Maximum error count (200) exceeded
acpidump.txt      2:     0000: 53 53 44 54 59 01 00 00 02 53 41 50 50 4C 45 20  SSDTY....SAPPLE 
Error    6313 -               ^ Invalid field label detected (found "0000" expected "Signature")

acpidump.txt      2:     0000: 53 53 44 54 59 01 00 00 02 53 41 50 50 4C 45 20  SSDTY....SAPPLE 
Error    6123 -               ^ String literal too long (Maximum 4 characters, found 64 characters [53 53 44 54 59 01 00 00 02 53 41 50 50 4C 45 20  SSDTY....SAPPLE])

acpidump.txt      3:     0010: 49 47 48 64 61 00 00 00 00 10 00 00 49 4E 54 4C  IGHda.......INTL
Error    6313 -               ^ Invalid field label detected (found "0010" expected "Table Length")

acpidump.txt      3:     0010: 49 47 48 64 61 00 00 00 00 10 00 00 49 4E 54 4C  IGHda.......INTL
Error    6126 -  syntax error ^

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
-- 
[Mac Mini 6,2] ACPI Errors when booting Ubuntu. 
https://bugs.launchpad.net/bugs/2007768
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