#1136242 linux: ACPI BIOS Error (AE_NOT_FOUND) on Intel Alder Lake laptop

#1136242#5
Date:
2026-05-11 05:15:29 UTC
From:
To:
Dear Maintainer,

I am reporting ACPI BIOS errors occurring on my laptop running Debian.

System Detail
# dmidecode 3.7
Getting SMBIOS data from sysfs.
SMBIOS 3.5.0 present.

Handle 0x0001, DMI type 1, 27 bytes
System Information
        Manufacturer: Hewlett-Packard
        Product Name: HP 250 15.6 inch G10 Notebook PC
        Version:
        Serial Number: 5CD34078L3
        UUID: 33444335-3034-3837-4c33-333830344435
        Wake-up Type: Power Switch
        SKU Number: 725G5EA#ABB
        Family: 103C_5336AN HP 200

Handle 0x000E, DMI type 32, 20 bytes
System Boot Information
        Status: No errors detected


kernel version
7.0.4+deb14-amd64

Notebook Model
HP 250 15.6 inch G10 Notebook PC


uname -r
7.0.4+deb14-amd64

Bios Version:
F.24


## Problem description

During system boot, the kernel logs ACPI-related firmware errors. These appearm
consistently in `dmesg` and may indicate BIOS/firmware ACPI table issues or
kernel ACPI parsing problems.

## Observed errors

From kernel logs:

* ACPI BIOS Error messages
* AE_NOT_FOUND errors
* Occasional AML-related warnings

Example (from dmesg):

```
ACPI BIOS Error (bug): Could not resolve symbol / method ...
AE_NOT_FOUND (2020xxxx)
```

## System information

* CPU: Intel Alder Lake / Raptor Lake platform
* Kernel: (run `uname -r` and insert version)
* BIOS version: (from `dmidecode`)
* Distribution: Debian

## Steps to reproduce

* Boot system normally
* Observe kernel log using:

  ```
  dmesg | grep -i acpi
  ```

## Expected behavior

No ACPI BIOS errors should appear during boot, and ACPI tables should be parsed
cleanly by the kernel.

## Actual behavior

ACPI BIOS errors are printed during boot and may indicate firmware
incompatibility or kernel ACPI handling issue.

Regards,
Nahid Hasan