[Bug 221523] New: [BUG] hp-wmi: OMEN 16-ap0xxx (8E35) - fan control not available (no PWM)

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=221523

            Bug ID: 221523
           Summary: [BUG] hp-wmi: OMEN 16-ap0xxx (8E35) - fan control not
                    available (no PWM)
           Product: Drivers
           Version: 2.5
          Hardware: AMD
                OS: Linux
            Status: NEW
          Severity: high
          Priority: P3
         Component: Platform_x86
          Assignee: drivers_platform_x86@kernel-bugs.osdl.org
          Reporter: sivasli-ahmet@gmx.de
        Regression: No

Created attachment 310126
  --> https://bugzilla.kernel.org/attachment.cgi?id=310126&action=edit
dmesg, dmidecode and xxd ec output

Like other users are reporting, with the HP Omen ap-16ap0xxx (motherboard 8E35)
the fans are not working properly.

Issue:
The system is able to read fan speeds correctly, but no PWM control interface
is exposed.
Fans appear to run at firmware-controlled speeds and do not respond to
temperature changes driven by the OS. Under heavy workload, the CPU and GPU
temperature will rise to 100°C, thermal throttling will begin, but fan speeds
might or might now increase. 

Details:
- fans detected
- fan1 and fan2 report valid RPM values
- no PWM control available (pwm1: N/A)
- fan_target not working

Impact:
The system does not adjust fan speeds on heavy workloads.

Possible Reason:
Board ID (8E35) not listed in hp_wmi driver.

Attached logs:
- dmesg
- dmidecode
- EC dump
- OMEN gaming hub log from windows

Please let me know if additional debugging (ACPI tables, EC dump, etc.) is
required.

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