Hi, got this again after a Ubuntu update that overwrote my "acpi=off" grub kernel parameter. For anyone that can't boot into the login screen then adding this is the fix.
CPU: Q9650 MB: G41MT-S2PT BTW the last half of the reports below are after I hit the power button to initiate what would normally be an ACPI shut down. I had to keep the power button held down to force power off. Cheers. [ 0.333629] ACPI Error: Aborting method _PR.CPU1.. _PDC due to previous error (AE ALREADY EXISTS) (20221020/psparse-529) [ 0.3336291 ACPI Error: AE_ALREADY_EXISTS, SSDT OxFFFF910E80D15200 Table is a ready loaded (20221020/tbdata-548) [ 0.333629] ACPI Error: Aborting method _PR. CPUZ._PDC due to previous error (AE _ALREADY _EXISTS) (20221020/psparse-529) [ 0.3336291 ACPI Error: AF ALREADY_EXISTS, SSDT OxFFFF910E80D14600 Table is a ready loaded (20221020/tbdata-548) г 0.3336291 ACPI Error: Aborting method _PR.CPU3.. _PDC due to previous error (AE_ALREADY _EXISTS) (20221020/psparse-529) 60.8740511 ru: INFO: ru_preempt detected stalls on CPUs/tasks: [ 60.8743431 rcu: 01-.. 1: (0 ticks this GP) idle=4a60/0/0x0 softirq=15/15 fqs =0 (false positive?) 60.875?361 rcu: rcu_preempt kthread timer wakeup didn't happen for 15001 jif fies! g-1031 f0x0 RU_GP_WAIT_FQS(5) -›state=0x402 [ 60.876242] ru: oFossible timer handling issue on cpu-1 timer-softirg-5 г 60.8765361 rcu: rcu_preempt kthread stared for 15002 jiffies g-1031 fOx0 R CU_GP_WAIT_FQS(5) -›state=0x402 ->cpu=1 [ 60.8769991 rcu: Unless ru_preempt kthread gets sufficient CPU time, 00M is now expected behauior. [ 60.8773991 ru: RCU grace-period kthread stack dump: [ 60.8780471 rcu: Stack dump where RCU GP kthread last ran: -- 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/1981783 Title: there is an ACPI error message every time it booting Status in Linux: Confirmed Status in linux package in Ubuntu: Confirmed Bug description: there is the following message every time it boots [0.290526] ACPI BIOS Error (bug) : Could not resolve symbol [\_PR.CPU0._CPC]AE_NOT_FOUND (20210730/psargs-529) [0.290884] ACPI Error: Aborting method \_PR.CPU1._CPC due to previous error (AE_NOT_FOUND (20210730/psargs-529) [0.290526] ACPI BIOS Error (bug) : Could not resolve symbol [\_PR.CPU0._CPC]AE_NOT_FOUND (20210730/psargs-529) [0.290884] ACPI Error: Aborting method \_PR.CPU2._CPC due to previous error (AE_NOT_FOUND (20210730/psargs-529) ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: ubuntu-release-upgrader-core 1:20.04.38 ProcVersionSignature: Ubuntu 5.15.0-41.44~20.04.1-generic 5.15.39 Uname: Linux 5.15.0-41-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.24 Architecture: amd64 CasperMD5CheckResult: skip CrashDB: ubuntu CurrentDesktop: ubuntu:GNOME Date: Fri Jul 15 11:15:30 2022 InstallationDate: Installed on 2022-04-21 (85 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) PackageArchitecture: all SourcePackage: ubuntu-release-upgrader Symptom: release-upgrade UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1981783/+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
