[Bug 2165663] Re: Persistent ACPI/firmware error messages during boot on HP Pavilion x360 with Ubuntu 26.04.1, without functional impact.

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find. ** Information type changed from Private Security to Public -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2165663 Title: Persistent ACPI/firmware error messages during boot on HP Pavilion x360 with Ubuntu 26.04.1, without functional impact. Status in linux package in Ubuntu: New Bug description: On an HP Pavilion x360 Convertible 14-dw1xxx running Ubuntu 26.04.1, persistent ACPI/firmware-related error messages are reported during boot. The messages include ACPI AE_ALREADY_EXISTS, AE_NOT_FOUND and AE_AML_BUFFER_LIMIT errors, along with KHO scratch-buffer and IRQ- handler messages. These messages have been present since Ubuntu was installed approximately 10 months ago. The system is currently functioning normally, with no known hangs or other hardware malfunction related to these messages. No BIOS/UEFI firmware update is currently available through fwupd. This report is submitted to inform Ubuntu developers and to ask whether these persistent messages are known on this HP model or indicate any firmware/kernel compatibility issue. No immediate troubleshooting is requested. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-30-generic 7.0.0-30.30 ProcVersionSignature: Ubuntu 7.0.0-30.30-generic 7.0.12 Uname: Linux 7.0.0-30-generic x86_64 ApportVersion: 2.34.1-0ubuntu0.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: sindusupra 3993 F.... pipewire sindusupra 4012 F.... wireplumber /dev/snd/controlC1: sindusupra 4012 F.... wireplumber /dev/snd/seq: sindusupra 3993 F.... pipewire CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Fri Aug 28 15:51:05 2026 InstallationDate: Installed on 2026-02-03 (206 days ago) InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64 (20250805.1) MachineType: HP HP Pavilion x360 Convertible 14-dw1xxx ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-30-generic root=UUID=63359019-8326-4f32-807b-b77de0e5d660 ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: Upgraded to resolute on 2026-07-30 (29 days ago) dmi.bios.date: 08/07/2025 dmi.bios.release: 15.56 dmi.bios.vendor: AMI dmi.bios.version: F.56 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: 87F4 dmi.board.vendor: HP dmi.board.version: 39.32 dmi.chassis.type: 31 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.ec.firmware.release: 39.32 dmi.modalias: dmi:bvnAMI:bvrF.56:bd08/07/2025:br15.56:efr39.32:svnHP:pnHPPavilionx360Convertible14-dw1xxx:pvr:rvnHP:rn87F4:rvr39.32:cvnHP:ct31:cvrChassisVersion:sku512F3UA#ABA:pfa103C_5335KVHPPavilion: dmi.product.family: 103C_5335KV HP Pavilion dmi.product.name: HP Pavilion x360 Convertible 14-dw1xxx dmi.product.sku: 512F3UA#ABA dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2165663/+subscriptions