I'd like to report one more instance of this bug. BUT perhaps more
importantly pass on a condition that seems to trigger these ACPI errors
at boot time (which you may or may not realize) and which might affect
your continued approach to fixing.
I use an old Dell t7400 and just recently decided to activate their TPM
(trusted platform module) in my bios. I had never received any of these
boot ACPI errors until I activated the TPM (which uses the broadcom LAN
chip for crypto key generation).
Immediately after activation, the ACPI errors unique to my system were
reported at boot through dmesg. Upon deactivation AND DISABLING the TPM
function (there are 2 distinct steps needed) the boot time ACPI errors
cease being reported.
===
ACPI BIOS Error (bug): Could not resolve symbol [\_PR.CPU7._PCT.CFGD],
AE_NOT_FOUND (20210730/psargs-330)
ACPI Error: Aborting method \_PR.CPU6._PCT due to previous error (AE_NOT_FOUND)
(20210730/psparse-529)
ACPI BIOS Error (bug): Could not resolve symbol [\_PR.CPU6._PCT.CFGD],
AE_NOT_FOUND (20210730/psargs-330)
and repeated for each core to 0 ..
ACPI Error: Aborting method \_PR.CPU0._PCT due to previous error (AE_NOT_FOUND)
(20210730/psparse-529)
ACPI BIOS Error (bug): Could not resolve symbol [\_PR.CPU0._PCT.CFGD],
AE_NOT_FOUND (20210730/psargs-330)
my relevant machine info
Kernel: 5.15.0-100-generic x86_64 bits: 64 compiler: gcc v: 11.4.0 Desktop:
Cinnamon 6.0.4
tk: GTK 3.24.33 wm: muffin vt: 7 dm: LightDM 1.30.0 Distro: Linux Mint 21.3
Virginia
base: Ubuntu 22.04 jammy
Machine:
Type: Desktop System: Dell product: Precision WorkStation T7400 v: N/A
serial: Chassis: type: 7 serial:
Mobo: Dell model: 0RW199 serial: BIOS: Dell v: A11 date:
04/30/2012
CPU:
Info: 2x 4-core model: Intel Xeon E5450 bits: 64 type: MCP SMP smt:
arch: Core Yorkfield rev: A cache: L1: 2x 256 KiB (512 KiB) L2: 2x 12 MiB
(24 MiB)
Speed (MHz): avg: 2693 high: 3591 min/max: 2000/3000 cores: 1: 3591 2: 2394
3: 2394 4: 2394
5: 3591 6: 2394 7: 2394 8: 2394 bogomips: 57457
Flags: ht lm nx pae sse sse2 sse3 sse4_1 ssse3 vmx
Network:
Device-1: Broadcom NetXtreme BCM5754 Gigabit Ethernet PCI Express vendor:
Dell driver: tg3
v: kernel pcie: speed: 2.5 GT/s lanes: 1 port: N/A bus-ID: 08:00.0 chip-ID:
14e4:167a
class-ID: 0200
=
I hope this is useful information.
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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
