I don't think it helps, but attaching a visual. No consuming process running, just that CPU1 at 97-98% all the time.
** Attachment added: "Screenshot From 2025-10-03 18-30-39.png" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2126636/+attachment/5914657/+files/Screenshot%20From%202025-10-03%2018-30-39.png -- 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/2126636 Title: ACPI interrupt storm on Asus [Your Exact Laptop Model] causes 100% CPU, `acpi=noirq` workaround breaks audio Status in linux package in Ubuntu: New Bug description: On my ASUSTeK COMPUTER INC. ASUS EXPERTBOOK P3605CVA, a single CPU core is constantly at 100% usage. The `ps` command shows this is caused by `kworker/kacpi_notify` and `irq/9-acpi`. The kernel log shows a recurring ACPI error: `ACPI Error: Aborting method \_SB.PC00.LPCB.H_EC.TFN1._FST due to previous error (AE_NOT_FOUND)` Troubleshooting Steps Taken: - A BIOS update is not available from Asus. - Upgrading to mainline kernel 6.17.0 did not fix the issue. - The following kernel parameters did not fix the CPU issue: `acpi_rev_override=1`, `acpi_ec_poll=1`, `acpi_osi=! acpi_osi='Windows 2021'`. - The `nolapic` parameter causes the system to hang on a black screen during boot. - The `acpi=noirq` parameter successfully fixes the 100% CPU issue, but it causes the internal sound card ("Speaker - Raptor Lake-P/U/H cAVS") to disappear, resulting in no sound. ProblemType: Bug DistroRelease: Ubuntu 25.04 Package: linux-image-6.14.0-33-generic 6.14.0-33.33 ProcVersionSignature: Ubuntu 6.14.0-33.33-generic 6.14.11 Uname: Linux 6.14.0-33-generic x86_64 ApportVersion: 2.32.0-0ubuntu5.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: aurelien 2784 F.... pipewire aurelien 2792 F.... wireplumber /dev/snd/seq: aurelien 2784 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Thu Oct 2 16:57:29 2025 InstallationDate: Installed on 2025-10-01 (1 days ago) InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Release amd64 (20250415.3) MachineType: ASUSTeK COMPUTER INC. ASUS EXPERTBOOK P3605CVA ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-33-generic root=UUID=151bb0ce-de78-41e4-8bc4-09f7b8050d63 ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M vt.handoff=7 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-6.14.0-33-generic N/A linux-backports-modules-6.14.0-33-generic N/A linux-firmware 20250317.git1d4c88ee-0ubuntu1.6 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/17/2025 dmi.bios.release: 5.32 dmi.bios.vendor: ASUSTeK COMPUTER INC. (Licensed by AMI, LLC.) dmi.bios.version: P3605CVA.302 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: P3605CVA dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.ec.firmware.release: 3.17 dmi.modalias: dmi:bvnASUSTeKCOMPUTERINC.(LicensedbyAMI,LLC.):bvrP3605CVA.302:bd05/17/2025:br5.32:efr3.17:svnASUSTeKCOMPUTERINC.:pnASUSEXPERTBOOKP3605CVA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnP3605CVA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:sku: dmi.product.family: ASUS EXPERTBOOK dmi.product.name: ASUS EXPERTBOOK P3605CVA dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2126636/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
