> 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
Can you please try with an upstream kernel? Being a distro kernel, it's very possible they're missing some of these patches. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1983180/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
