I found something suspicious in your ACPI table:
Method (UWFE, 0, Serialized) {
...
^^^^UBTC.CCI0 = CCI0 /* \_SB_.PCI0.SBRG.EC0_.CCI0 */
^^^^UBTC.CCI1 = CCI1 /* \_SB_.PCI0.SBRG.EC0_.CCI1 */
^^^^UBTC.CCI2 = CCI2 /* \_SB_.PCI0.SBRG.EC0_.CCI2 */
^^^^UBTC.CCI3 = CCI3 /* \_SB_.PCI0.SBRG.EC0_.CCI3 */
CCI0 = Zero
CCI3 = Zero
...
Notify (UBTC, 0x80) // Status Change
}
Method (_Q81, 0, Serialized) // _Qxx: EC Query, xx=0x00-0xFF
{
UWFE ()
}
_Q81 (further called UWFE()) is the method called when EC generates SCI
(System Control Interrupt) to notify OS (and ucsi_acpi_notify() will
finally be called) that the CCI (USB Type-C Command Status and Connector
Change Indication) status has changed by the USB-C controller.
Looking at UWFE(), CCI0 and CCI3 (are in System RAM) are zeroed after being
copied to EC RAM. Here is the point:
if OS tried to read this CCI event by only reading the system memory rather
than explicitly reading from EC RAM, OS might read the wrong value.
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https://bugs.launchpad.net/bugs/2073538
Title:
kacpi_notify high cpu on interrupt gpe17
Status in linux package in Ubuntu:
Incomplete
Bug description:
Picked up a HP laptop during July sales, and found the CPU soars to 80+ with
kacpi_notify hitting GPE17.
I would like some help finding the cause. Google searches were vague about
masking the interrupt which did NOT help. If we can find what is calling the
interrupts maybe we can better document a solution.
top - 20:00:05 up 10 min, 1 user, load average: 86.24, 76.27, 42.44
Tasks: 453 total, 2 running, 451 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.1 us, 8.5 sy, 0.0 ni, 91.4 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0
st
MiB Mem : 62040.5 total, 51595.7 free, 3166.0 used, 8146.3 buff/cache
MiB Swap: 0.0 total, 0.0 free, 0.0 used. 58874.4 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+
COMMAND
127 root 20 0 0 0 0 D 1.3 0.0 0:03.71
[kworker/11:1+kacpi_notify]
280 root 20 0 0 0 0 D 1.3 0.0 0:06.63
[kworker/5:5+kacpi_notify]
314 root 20 0 0 0 0 D 1.3 0.0 0:06.68
[kworker/5:12+kacpi_notify]
ubuntu@ubuntu:~$ grep . -r /sys/firmware/acpi/interrupts/ | awk '$2 > 0'
/sys/firmware/acpi/interrupts/sci: 1907
/sys/firmware/acpi/interrupts/gpe_all: 1907
/sys/firmware/acpi/interrupts/gpe17: 1907 EN enabled unmasked
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-31-generic 6.8.0-31.31
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.28.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/seq: ubuntu 2813 F.... pipewire
/dev/snd/controlC1: ubuntu 2815 F.... wireplumber
/dev/snd/controlC0: ubuntu 2815 F.... wireplumber
/dev/snd/controlC2: ubuntu 2815 F.... wireplumber
CRDA: N/A
CasperMD5CheckResult: unknown
CasperVersion: 1.498
CloudArchitecture: x86_64
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSubPlatform: seed-dir (/var/lib/cloud/seed/nocloud)
CurrentDesktop: ubuntu:GNOME
Date: Thu Jul 18 19:52:46 2024
LiveMediaBuild: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
MachineType: HP Victus by HP Gaming Laptop 15-fb2xxx
ProcEnviron:
LANG=C.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz --- quiet splash
RelatedPackageVersions:
linux-restricted-modules-6.8.0-31-generic N/A
linux-backports-modules-6.8.0-31-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/20/2024
dmi.bios.release: 15.3
dmi.bios.vendor: AMI
dmi.bios.version: F.03
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 8C2F
dmi.board.vendor: HP
dmi.board.version: 04.14
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 4.14
dmi.modalias:
dmi:bvnAMI:bvrF.03:bd05/20/2024:br15.3:efr4.14:svnHP:pnVictusbyHPGamingLaptop15-fb2xxx:pvr:rvnHP:rn8C2F:rvr04.14:cvnHP:ct10:cvrChassisVersion:skuA14MNUA#ABA:
dmi.product.family: 103C_5335M7 HP Victus
dmi.product.name: Victus by HP Gaming Laptop 15-fb2xxx
dmi.product.sku: A14MNUA#ABA
dmi.sys.vendor: HP
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