same issue on Dell XPS 15-i9. using kernel 5.13.0-28-generic. These three errors appear in dmesg, usually in succession.
ACPI Error: Aborting method \_SB.PCI0.LPCB.ECDV._Q66 due to previous error (AE_AML_NOT_OWNER) (20210331/psparse-529) i915 0000:00:02.0: [drm] *ERROR* Atomic update failure on pipe A (start=432243 end=432244) time 843 us, min 2385, max 2399, scanline start 2345, end 0 ACPI Error: Thread 1882606336 cannot release Mutex [ECMX] acquired by thread 2269184000 (20210331/exmutex-378) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-hwe-5.8 in Ubuntu. https://bugs.launchpad.net/bugs/1920847 Title: ACPI Error: Aborting method \_SB.PCI0.LPCB.ECDV._Q66 due to previous error (AE_AML_NOT_OWNER) (20200528/psparse-529) Status in linux-signed-hwe-5.8 package in Ubuntu: Confirmed Bug description: ACPI Error on boot: Aborting method \_SB.PCI0.LPCB.ECDV._Q66 due to previous error (AE_AML_NOT_OWNER) (20200528/psparse-529) Occurred on fresh install of 21.04 Computer: Dell Inspiron 5401 P130G Ubuntu Version: Description: Ubuntu 20.04.2 LTS Release: 20.04 Package Version: linux-signed-hwe-5.8 What i expected to happen: Not have this error appear What Happened: This error Appeared. A dump of the ACPI table has been provided. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-image-5.8.0-45-generic 5.8.0-45.51~20.04.1+1 ProcVersionSignature: Ubuntu 5.8.0-45.51~20.04.1-generic 5.8.18 Uname: Linux 5.8.0-45-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.16 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME Date: Mon Mar 22 23:34:08 2021 InstallationDate: Installed on 2021-03-23 (0 days ago) InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64 (20210209.1) SourcePackage: linux-signed-hwe-5.8 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.8/+bug/1920847/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
