Hello,

Sorry if I'm posting this wrong, but I get the same error, using Linux Mint 
kernel version 5.4.0-137 on HP Elitebook 745
I installed the latest: 5.4.0-144 and the issue still persists. 
It's not only that the messages appear on the console, but actually takes 
several restarts (using the button) to load the system.

# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 3.1.0 present.

Handle 0x0011, DMI type 2, 17 bytes
Base Board Information
        Manufacturer: HP
        Product Name: 83D5
        Version: KBC Version 08.61.00
        Serial Number: PGWJE00WBCO144
        Asset Tag:  
        Features:
                Board is a hosting board
        Location In Chassis:  
        Chassis Handle: 0x0000
        Type: Motherboard
        Contained Object Handles: 0

#lscpu

Architecture:                    x86_64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Little Endian
Address sizes:                   43 bits physical, 48 bits virtual
CPU(s):                          8
On-line CPU(s) list:             0-7
Thread(s) per core:              2
Core(s) per socket:              4
Socket(s):                       1
NUMA node(s):                    1
Vendor ID:                       AuthenticAMD
CPU family:                      23
Model:                           17
Model name:                      AMD Ryzen 5 PRO 2500U w/ Radeon Vega Mobile Gfx
Stepping:                        0
Frequency boost:                 enabled
CPU MHz:                         1338.250
CPU max MHz:                     2000,0000
CPU min MHz:                     1600,0000
BogoMIPS:                        3992.42
Virtualization:                  AMD-V
L1d cache:                       128 KiB
L1i cache:                       256 KiB
L2 cache:                        2 MiB
L3 cache:                        4 MiB
NUMA node0 CPU(s):               0-7
Vulnerability Itlb multihit:     Not affected
Vulnerability L1tf:              Not affected
Vulnerability Mds:               Not affected
Vulnerability Meltdown:          Not affected
Vulnerability Mmio stale data:   Not affected
Vulnerability Retbleed:          Vulnerable
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled 
via prctl and seccomp
Vulnerability Spectre v1:        Mitigation; usercopy/swapgs barriers and 
__user pointer sanitization
Vulnerability Spectre v2:        Mitigation; Retpolines, IBPB conditional, 
STIBP disabled, RSB filling, PBRSB-eIBRS Not affected
Vulnerability Srbds:             Not affected
Vulnerability Tsx async abort:   Not affected
Flags:                           fpu vme de pse tsc msr pae mce cx8 apic sep 
mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext 
fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid 
extd_apicid ap
                                 erfmperf pni pclmulqdq monitor ssse3 fma cx16 
sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm 
extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce 
topoext 
                                 perfctr_core perfctr_nb bpext perfctr_llc 
mwaitx cpb hw_pstate sme ssbd sev ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 
rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 xsaves clzero irperf 
xsaveerp
                                 tr arat npt lbrv svm_lock nrip_save tsc_scale 
vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic 
v_vmsave_vmload vgif overflow_recov succor smca

#Error messages:

[    0.869289] ACPI BIOS Error (bug): AE_AML_PACKAGE_LIMIT, Index (0x000000005) 
is beyond end of object (length 0x5) (20190816/exoparg2-393)
[    0.869336] 
               Initialized Local Variables for Method [GETP]:
[    0.869337]   Local0: 000000001c28015b <Obj>           Integer 
0000000000000003
[    0.869341] Initialized Arguments for Method [GETP]:  (2 arguments defined 
for method invocation)
[    0.869341]   Arg0:   0000000054561fde <Obj>           Integer 
0000000000000005
[    0.869342]   Arg1:   000000006662f2c4 <Obj>           Integer 
0000000000000003
[    0.869345] ACPI Error: Aborting method \_TZ.GETP due to previous error 
(AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[    0.869378] ACPI Error: Aborting method \_TZ.CHGZ._CRT due to previous error 
(AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[    0.870179] ACPI BIOS Error (bug): AE_AML_PACKAGE_LIMIT, Index (0x000000005) 
is beyond end of object (length 0x5) (20190816/exoparg2-393)
[    0.870227] 
               Initialized Local Variables for Method [GTTP]:
[    0.870227]   Local1: 00000000d18c83fc <Obj>           Integer 
0000000000000027
[    0.870229]   Local2: 000000005a121952 <Obj>           Integer 
0000000000000027
[    0.870231] Initialized Arguments for Method [GTTP]:  (5 arguments defined 
for method invocation)
[    0.870231]   Arg0:   0000000012243320 <Obj>           Integer 
0000000000000005
[    0.870232]   Arg1:   0000000055615478 <Obj>           Integer 
0000000000000006
[    0.870234]   Arg2:   00000000a6916378 <Obj>           Integer 
0000000000000010
[    0.870235]   Arg3:   0000000054561fde <Obj>           Integer 
0000000000000000
[    0.870237]   Arg4:   000000006662f2c4 <Obj>           Integer 
000000000000007F
[    0.870239] ACPI Error: Aborting method \_TZ.GTTP due to previous error 
(AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[    0.870275] ACPI Error: Aborting method \_TZ.CHGZ._TMP due to previous error 
(AE_AML_PACKAGE_LIMIT) (20190816/psparse-529)
[    0.870328] ACPI BIOS Error (bug): AE_AML_PACKAGE_LIMIT, Index (0x000000005) 
is beyond end of object (length 0x5) (20190816/exoparg2-393)

-- 
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https://bugs.launchpad.net/bugs/1983180

Title:
  ACPI Error _CPC not found

Status in Linux:
  Confirmed
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  just recently (I guess since the last update) I get a few ACPI error
  messages during start up. Those are also visible with dmesg:

  ...
  [    0.713907] ACPI: AC: AC Adapter [AC] (on-line)
  [    0.713978] input: Sleep Button as 
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input0
  [    0.714011] ACPI: button: Sleep Button [SLPB]
  [    0.714040] input: Lid Switch as 
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input1
  [    0.714061] ACPI: button: Lid Switch [LID]
  [    0.714087] input: Power Button as 
/devices/LNXSYSTM:00/LNXPWRBN:00/input/input2
  [    0.714105] ACPI: button: Power Button [PWRF]
  [    0.714187] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.714199] No Local Variables are initialized for Method [_CPC]
  [    0.714201] No Arguments are initialized for method [_CPC]
  [    0.714203] ACPI Error: Aborting method \_SB.PR01._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.714395] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.714404] No Local Variables are initialized for Method [_CPC]
  [    0.714405] No Arguments are initialized for method [_CPC]
  [    0.714407] ACPI Error: Aborting method \_SB.PR02._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.714480] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.714488] No Local Variables are initialized for Method [_CPC]
  [    0.714490] No Arguments are initialized for method [_CPC]
  [    0.714492] ACPI Error: Aborting method \_SB.PR03._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.714640] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.714651] No Local Variables are initialized for Method [_CPC]
  [    0.714653] No Arguments are initialized for method [_CPC]
  [    0.714655] ACPI Error: Aborting method \_SB.PR04._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.714940] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.714952] No Local Variables are initialized for Method [_CPC]
  [    0.714953] No Arguments are initialized for method [_CPC]
  [    0.714955] ACPI Error: Aborting method \_SB.PR05._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.715106] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.715118] No Local Variables are initialized for Method [_CPC]
  [    0.715119] No Arguments are initialized for method [_CPC]
  [    0.715121] ACPI Error: Aborting method \_SB.PR06._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.715309] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.715321] No Local Variables are initialized for Method [_CPC]
  [    0.715322] No Arguments are initialized for method [_CPC]
  [    0.715324] ACPI Error: Aborting method \_SB.PR07._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.715611] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.715623] No Local Variables are initialized for Method [_CPC]
  [    0.715624] No Arguments are initialized for method [_CPC]
  [    0.715626] ACPI Error: Aborting method \_SB.PR08._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.716055] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.716067] No Local Variables are initialized for Method [_CPC]
  [    0.716069] No Arguments are initialized for method [_CPC]
  [    0.716071] ACPI Error: Aborting method \_SB.PR09._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.716360] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.716371] No Local Variables are initialized for Method [_CPC]
  [    0.716373] No Arguments are initialized for method [_CPC]
  [    0.716375] ACPI Error: Aborting method \_SB.PR10._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.716669] ACPI BIOS Error (bug): Could not resolve symbol 
[\_SB.PR00._CPC], AE_NOT_FOUND (20210730/psargs-330)
  [    0.716681] No Local Variables are initialized for Method [_CPC]
  [    0.716682] No Arguments are initialized for method [_CPC]
  [    0.716684] ACPI Error: Aborting method \_SB.PR11._CPC due to previous 
error (AE_NOT_FOUND) (20210730/psparse-529)
  [    0.720501] thermal LNXTHERM:00: registered as thermal_zone0
  [    0.720504] ACPI: thermal: Thermal Zone [THM0] (64 C)
  ...

  Searching the internet shows that many people with different computers
  are affected by that.

  Probably it's a regression in the Linux kernel as described at:
  https://bugzilla.kernel.org/show_bug.cgi?id=213023

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: linux-image-5.15.0-43-generic 5.15.0-43.46
  ProcVersionSignature: Ubuntu 5.15.0-43.46-generic 5.15.39
  Uname: Linux 5.15.0-43-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu82.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  cm         2717 F.... pulseaudio
   /dev/snd/controlC1:  cm         2717 F.... pulseaudio
  CasperMD5CheckResult: unknown
  CurrentDesktop: KDE
  Date: Sat Jul 30 16:16:46 2022
  HibernationDevice:
   #RESUME=UUID=9cd06200-ed0e-4f66-9baa-a3977c6b59e0
   RESUME=/dev/mapper/GROUP-SWAP
  InstallationDate: Installed on 2018-10-10 (1388 days ago)
  InstallationMedia: Kubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 
(20180725)
  MachineType: LENOVO 20MBCTO1WW
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-43-generic 
root=/dev/mapper/GROUP-ROOT ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.15.0-43-generic N/A
   linux-backports-modules-5.15.0-43-generic  N/A
   linux-firmware                             20220329.git681281e4-0ubuntu3.3
  SourcePackage: linux
  UpgradeStatus: Upgraded to jammy on 2022-07-24 (5 days ago)
  dmi.bios.date: 06/10/2022
  dmi.bios.release: 1.47
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N2CET64W (1.47 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20MBCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.ec.firmware.release: 1.16
  dmi.modalias: 
dmi:bvnLENOVO:bvrN2CET64W(1.47):bd06/10/2022:br1.47:efr1.16:svnLENOVO:pn20MBCTO1WW:pvrThinkPadP72:rvnLENOVO:rn20MBCTO1WW:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20MB_BU_Think_FM_ThinkPadP72:
  dmi.product.family: ThinkPad P72
  dmi.product.name: 20MBCTO1WW
  dmi.product.sku: LENOVO_MT_20MB_BU_Think_FM_ThinkPad P72
  dmi.product.version: ThinkPad P72
  dmi.sys.vendor: LENOVO

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