Public bug reported:
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.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug plucky wayland-session
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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.
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