Public bug reported:
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
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/bugs/2152856/+attachment/5971040/+files/lspci-vnvn.log
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2152856
Title:
Regression: Boot freeze and Powerdevil crash on kernel 7.0.0-15 (HP
Pavilion, AMD Lucienne)
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