Bug Report Summary: HP OmniBook X 2-in-1 Accelerometer Missing (Intel Lunar Lake)

[Cédric Trachsel]

System Information:
- OS: Ubuntu 25.10
- Kernel: 6.17.0-7-generic
- Hardware: HP OmniBook X 2-in-1 (Intel Core Ultra 7 Lunar Lake)
- ISH PCI Device: 00:12.0 Intel Corporation Lunar Lake-M Integrated Sensor Hub [8086:a845] (rev 10)

Issue Description:
The integrated accelerometer is not detected by the system, preventing auto-rotation.
The Intel ISH (Integrated Sensor Hub) driver `intel_ish_ipc` is loaded, but it only detects the proximity sensor.

Diagnostic Output:
1. Kernel Modules:
   `intel_ish_ipc` and `hid_sensor_hub` are loaded.
   `hid_sensor_prox` is loaded (Proximity sensor detected).
   `hid_sensor_accel_3d` or similar accelerometer modules are NOT loaded/used.

2. IIO Devices (`/sys/bus/iio/devices/`):
   Only `prox` devices are present. No `accel` devices found.

3. Modinfo `intel_ish_ipc`:
   Firmware `intel/ish/ish_lnlm.bin` is listed as available/supported by the module.

Expected Behavior:
The accelerometer should be exposed as an IIO device (e.g., `iio:deviceX` with name `accel_3d`) to allow `iio-sensor-proxy` to handle screen rotation.

Suspected Cause:
Missing or incorrect ISH firmware mapping for this specific HP Lunar Lake device in the Linux kernel or `linux-firmware` package.

ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: linux-image-6.17.0-7-generic 6.17.0-7.7
ProcVersionSignature: Ubuntu 6.17.0-7.7-generic 6.17.2
Uname: Linux 6.17.0-7-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: cedric 9710 F.... pipewire
                      cedric 9729 F.... wireplumber
 /dev/snd/seq: cedric 9710 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Nov 27 20:23:18 2025
InstallationDate: Installed on 2025-11-19 (8 days ago)
InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007)
MachineType: HP HP OmniBook X Flip Laptop 14-fm0xxx
ProcFB: 0 xedrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.17.0-7-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M vt.handoff=7
RelatedPackageVersions:
 firmware-sof N/A
 linux-firmware 20250901.git993ff19b-0ubuntu1.4
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/24/2025
dmi.bios.release: 15.7
dmi.bios.vendor: Insyde
dmi.bios.version: F.07
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 8D9F
dmi.board.vendor: HP
dmi.board.version: 46.32
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 46.32
dmi.modalias: dmi:bvnInsyde:bvrF.07:bd06/24/2025:br15.7:efr46.32:svnHP:pnHPOmniBookXFlipLaptop14-fm0xxx:pvrType1ProductConfigId:rvnHP:rn8D9F:rvr46.32:cvnHP:ct31:cvrChassisVersion:skuC92QREA#UUZ:
dmi.product.family: 103C_5335M8 HP OmniBook X
dmi.product.name: HP OmniBook X Flip Laptop 14-fm0xxx
dmi.product.sku: C92QREA#UUZ
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: HP