[Bug 2152856] Re: Regression: Boot freeze and Powerdevil crash on kernel 7.0.0-15 (HP Pavilion, AMD Lucienne)

** Tags added: kernel-daily-bug -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2152856 Title: Regression: Boot freeze and Powerdevil crash on kernel 7.0.0-15 (HP Pavilion, AMD Lucienne) Status in linux package in Ubuntu: New Bug description: After updating to linux-image-7.0.0-15-generic on Kubuntu 26.04, the system fails to boot into the graphical environment. Reverting to 7.0.0-14 resolves the issue entirely. Hardware: HP Pavilion, AMD Ryzen 5 (Lucienne). The logs from the failed boot (journalctl -b -1 -p err) show ACPI BIOS errors colliding with the WMI modules, immediately followed by Powerdevil EACCES permissions errors, crashing the session: journalctl -b -1 -p err may 17 16:05:39 KubHP kernel: ACPI BIOS Error (bug): AE_AML_BUFFER_LIMIT> may 17 16:05:39 KubHP kernel: ACPI Error: Aborting method \_SB.WMID.WQBZ> may 17 16:05:39 KubHP kernel: ACPI Error: Aborting method \_SB.WMID.WQBE> may 17 16:05:39 KubHP kernel: ACPI BIOS Error (bug): AE_AML_BUFFER_LIMIT> may 17 16:05:39 KubHP kernel: ACPI Error: Aborting method \HWMC due to p> may 17 16:05:39 KubHP kernel: ACPI Error: Aborting method \_SB.WMID.WMAA> may 17 16:09:27 KubHP org_kde_powerdevil[1826]: [ 1826] Error(s) openin> may 17 16:09:27 KubHP org_kde_powerdevil[1826]: [ 1826] Error EACCES(-1> may 17 16:09:27 KubHP org_kde_powerdevil[1826]: [ 1826] Error EACCES(-1> may 17 16:09:27 KubHP org_kde_powerdevil[1826]: [ 1826] Error EACCES(-1> may 17 16:09:27 KubHP org_kde_powerdevil[1826]: [ 1826] Error EACCES(-1> may 17 16:09:27 KubHP org_kde_powerdevil[1826]: [ 1826] Error EACCES(-1> may 17 16:09:27 KubHP org_kde_powerdevil[1826]: [ 1826] Error EACCES(-1> may 17 16:09:27 KubHP org_kde_powerdevil[1826]: [ 1826] Error EACCES(-1> may 17 16:09:27 KubHP obexd[2168]: Unable to acquire registry: Error cal> may 17 16:09:27 KubHP obexd[2168]: Unable to acquire registry: Error cal> ******************************************************************************************** 1) The release of Ubuntu you are using: Kubuntu 26.044 (Noble Numbat) 2) The version of the package you are using: Package: linux-image-7.0.0-15-generic (Currently purged and system running on 7.0.0-14 to maintain stability). 3) What you expected to happen: The system should boot normally into the KDE Plasma graphical session without freezing or hanging during the boot sequence. 4) What happened instead: The boot process hangs completely after the GRUB menu. The graphical interface never loads, and the system becomes unresponsive. Reviewing the logs (journalctl -b -1 -p err) reveals that org_kde_powerdevil crashes repeatedly with EACCES(-1) permission errors immediately following ACPI BIOS/WMI module errors. Reverting to kernel 7.0.0-14 restores full functionality. Ubuntu 7.0.0-14.14-generic 7.0.0 ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-14-generic 7.0.0-14.14 ProcVersionSignature: Ubuntu 7.0.0-14.14-generic 7.0.0 Uname: Linux 7.0.0-14-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: KDE Date: Sun May 17 16:37:15 2026 InstallationDate: Installed on 2026-05-16 (1 days ago) InstallationMedia: Kubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423) MachineType: HP HP Pavilion All-in-One Desktop 27-ca0xxx ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-7.0.0-14-generic root=UUID=ee9a7cfa-3815-4a54-9cc0-97d6c9f75dc6 ro rootflags=subvol=@ quiet splash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/04/2024 dmi.bios.release: 15.48 dmi.bios.vendor: AMI dmi.bios.version: F.30 dmi.board.name: 8924 dmi.board.vendor: HP dmi.board.version: 0100 dmi.chassis.type: 13 dmi.chassis.vendor: HP dmi.ec.firmware.release: 84.36 dmi.modalias: dmi:bvnAMI:bvrF.30:bd07/04/2024:br15.48:efr84.36:svnHP:pnHPPavilionAll-in-OneDesktop27-ca0xxx:pvr:rvnHP:rn8924:rvr0100:cvnHP:ct13:cvr:sku58Q85LA#AKH:pfa103C_53311MHPPavilion: dmi.product.family: 103C_53311M HP Pavilion dmi.product.name: HP Pavilion All-in-One Desktop 27-ca0xxx dmi.product.sku: 58Q85LA#AKH dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2152856/+subscriptions