Public bug reported:
Hardware: HP 250 G9 15.6" (board 8A1D), BIOS F.56, Intel 12th gen Alder Lake
(Iris Xe, i915),
NVMe Samsung MZVLQ512HBLU, Wi-Fi Intel AX210 (replaced the original Realtek
RTL8822CE),
16 GB RAM (HP memory diagnostics: passed).
OS: Ubuntu 26.04.1 LTS.
Problem:
The system hard-freezes while idle (awake, screen blanked by idle timeout, no
user activity).
The journal stops abruptly with no error before the freeze, the fan goes to
full speed,
keyboard/power LED do not respond, and a forced power-off is required.
kdump is enabled with kernel.softlockup_panic=1 and kernel.hardlockup_panic=1,
but nothing is captured (no dump in /var/crash), so it seems to be a complete
hardware-level lockup.
Kernel comparison (same machine, same configuration):
- 7.0.0-31: stable for 7 days with the boot parameters below. s2idle
suspend/resume works.
- 7.0.0-34 / 7.0.0-38: s2idle suspend never completes (system hangs while
entering suspend,
power LED steady), plus idle freezes.
- 7.0.0-42: s2idle mostly works again, but one idle freeze after ~31 hours
(with all parameters
below active) and one failed resume from s2idle a day later.
Boot parameters that made 7.0.0-31 stable:
pcie_aspm=off intel_idle.max_cstate=3 nvme_core.default_ps_max_latency_us=5500
i915.enable_psr=0
Removing only pcie_aspm=off on 7.0.0-31 brought the idle freeze back after ~45
hours.
On 7.0.0-42 all these parameters are verified active (cpuidle states: POLL C1E
C6,
"PCIe ASPM is disabled", nvme latency 5500), yet the freeze still occurs.
The problem started after upgrading to Ubuntu 26.04 (kernel 7.0 series) in July
2026.
I can test new kernels and provide additional logs if needed.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-31-generic 7.0.0-31.31
ProcVersionSignature: Ubuntu 7.0.0-31.31-generic 7.0.14
Uname: Linux 7.0.0-31-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: kjyx 3740 F.... pipewire
kjyx 3754 F.... wireplumber
/dev/snd/seq: kjyx 3740 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Oct 31 13:23:34 2026
InstallationDate: Installed on 2026-07-20 (103 days ago)
InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 04f2:b75e Chicony Electronics Co., Ltd HP TrueVision HD
Camera
Bus 001 Device 003: ID 8087:0032 Intel Corp. AX210 Bluetooth
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MachineType: HP HP 250 15.6 inch G9 Notebook PC
ProcEnviron:
LANG=it_IT.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-31-generic
root=UUID=b859ec35-2b54-42d1-bcb2-aae47b5fd500 ro quiet splash reboot=pci,force
i915.enable_psr=0 intel_idle.max_cstate=3
nvme_core.default_ps_max_latency_us=5500 pcie_aspm=off
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: Upgraded to resolute on 2026-07-21 (102 days ago)
dmi.bios.date: 08/03/2022
dmi.bios.release: 15.56
dmi.bios.vendor: Insyde
dmi.bios.version: F.56
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 8A1D
dmi.board.vendor: HP
dmi.board.version: 08.35
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 8.35
dmi.modalias:
dmi:bvnInsyde:bvrF.56:bd08/03/2022:br15.56:efr8.35:svnHP:pnHP25015.6inchG9NotebookPC:pvrType1ProductConfigId:rvnHP:rn8A1D:rvr08.35:cvnHP:ct10:cvrChassisVersion:sku6F214EA#ABZ:pfa103C_5336ANHP200:
dmi.product.family: 103C_5336AN HP 200
dmi.product.name: HP 250 15.6 inch G9 Notebook PC
dmi.product.sku: 6F214EA#ABZ
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: HP
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2172666
Title:
Hard freeze at idle (screen off) on HP 250 G9 (Alder Lake) with
7.0.0-38 and 7.0.0-42; 7.0.0-31 stable
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