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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1854592 Title: kern.log flooded by ACPI error messages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1854592/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
