kern.log flooded by ACPI error messages

[Alan AZZERA]

I use Ubuntu 19.10 AMD64 (completely up to date) on a Lenovo Thinkpad S1 Yoga 12, and I've just noticed that /var/log/kern.log is flooded by messages like :
Nov 30 21:12:44 yoga kernel: [ 526.471259] ACPI: \_SB.PCI0.LPCB.EC0.ECRD: 1 arguments were passed to a non-method ACPI object (RegionField) (20190703/nsarguments-204)
Every about two seconds, 18 messages of this kind are recorded.
What could I do to provide more informations ?

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-23-generic 5.3.0-23.25
ProcVersionSignature: Ubuntu 5.3.0-23.25-generic 5.3.7
Uname: Linux 5.3.0-23-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: tley 1650 F.... pulseaudio
 /dev/snd/controlC1: tley 1650 F.... pulseaudio
 /dev/snd/pcmC1D0p: tley 1650 F...m pulseaudio
Date: Sat Nov 30 21:18:09 2019
InstallationDate: Installed on 2019-11-17 (13 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: LENOVO 20DKS1MA00
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-23-generic root=UUID=6662e662-b3da-478c-bf6b-ea7d12495e6e ro quiet splash 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-5.3.0-23-generic N/A
 linux-backports-modules-5.3.0-23-generic N/A
 linux-firmware 1.183.2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/24/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: JEET69WW (1.18 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20DKS1MA00
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrJEET69WW(1.18):bd07/24/2015:svnLENOVO:pn20DKS1MA00:pvrThinkPadS1Yoga12:rvnLENOVO:rn20DKS1MA00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad S1 Yoga 12
dmi.product.name: 20DKS1MA00
dmi.product.sku: LENOVO_MT_20DK_BU_Think_FM_ThinkPad S1 Yoga 12
dmi.product.version: ThinkPad S1 Yoga 12
dmi.sys.vendor: LENOVO

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Maybe upgrade the BIOS?

[Alan AZZERA (azzera-alan)]

I can't as I'm already at the latest version. Is there a way to prevent these messages to fill the logs ?

[Kai-Heng Feng (kaihengfeng)]

Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.9-rc3/amd64/

[Udo Richter (urig73)]

I can see this effect on Debian on kernel 5.10.0-9, and its also a Lenovo Yoga device, a Yoga 12.

Also, I've noticed that the messages disappear when the thinkpad_acpi kernel module is unloaded.

See this unload/load cycle:

[ 3438.860209] ACPI: \_SB.PCI0.LPCB.EC0.ECRD: 1 arguments were passed to a non-method ACPI object (RegionField) (20200925/nsarguments-206)
[ 3438.860229] ACPI: \_SB.PCI0.LPCB.EC0.ECRD: 1 arguments were passed to a non-method ACPI object (RegionField) (20200925/nsarguments-206)
[ 3438.860248] ACPI: \_SB.PCI0.LPCB.EC0.ECRD: 1 arguments were passed to a non-method ACPI object (RegionField) (20200925/nsarguments-206)
[ 3438.860268] ACPI: \_SB.PCI0.LPCB.EC0.ECRD: 1 arguments were passed to a non-method ACPI object (RegionField) (20200925/nsarguments-206)
[ 3439.473575] battery: extension unregistered: ThinkPad Battery Extension
[ 4353.799882] thinkpad_acpi: ThinkPad ACPI Extras v0.26
[ 4353.799884] thinkpad_acpi: http://ibm-acpi.sf.net/
[ 4353.799885] thinkpad_acpi: ThinkPad BIOS JEET69WW (1.18 ), EC JEHT69WW
[ 4353.799886] thinkpad_acpi: Lenovo ThinkPad S1 Yoga 12, model 20DKS0X40M
[ 4353.800475] thinkpad_acpi: Tablet mode switch found (type: GMMS), currently in laptop mode
[ 4353.800484] thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver
[ 4353.800485] thinkpad_acpi: Disabling thinkpad-acpi brightness events by default...
[ 4353.802295] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked
[ 4353.802567] ACPI: \_SB.PCI0.LPCB.EC0.ECRD: 1 arguments were passed to a non-method ACPI object (RegionField) (20200925/nsarguments-206)
[ 4353.802579] ACPI: \_SB.PCI0.LPCB.EC0.ECRD: 1 arguments were passed to a non-method ACPI object (RegionField) (20200925/nsarguments-206)
[ 4353.802588] ACPI: \_SB.PCI0.LPCB.EC0.ECRD: 1 arguments were passed to a non-method ACPI object (RegionField) (20200925/nsarguments-206)
[ 4353.802597] ACPI: \_SB.PCI0.LPCB.EC0.ECRD: 1 arguments were passed to a non-method ACPI object (RegionField) (20200925/nsarguments-206)

Not sure if this is important, but I also have the tp-smapi-dkms package installed.