pankha

A low-level utility for manual fan speed control on the HP OMEN 16 Gaming Laptop.

⚠️ DISCLAIMER: Please follow the support device list strictly. The EC registers are almost certainly different on other laptop models. Use at your own risk.

Preview

Supported Devices

Device	DMI Board ID	Tested by
Omen 16-wf1xxx	8C78	@VulnX
Omen 16-wf0xxx	8BAB	@PXG-XPG
Omen 16-xd0xxx	8BCD	@varad-pisale
Omen 16-ap0097ax	8E35	@locomotiivo
Omen Transcend 14-fb0xxx	8C58	@DistortedDragon1o4
HP Omen 15-en1xxx	88D2	@GosnatIron
HP Omen 16-wf0000n1	8BAC	@SlopeSlayer910

NOTE: If your board is not listed above and you want support to be added, feel free to open an issue.

Installation

See INSTALL.md

How It Works

• CPU temperature is detected via hwmon.
• Fan speed is read/controlled via IOCTLs through a custom device driver, providing a safe abstraction over EC registers.
• It auto-updates every second.

EC Register Mapping

1. Register 0x11

   • Default: 0x00
   • Function: Represents the real fan speed.

2. Register 0x15

   • Default: 0x00
   • Function: Controller. If it has the value 0 then it means that fan is controlled by the BIOS, any non zero value like 1 would indicate manual control, using the below register.

3. Register 0x19

   • Default: 0xFF
   • Function: Represents actual fan speed.
     • Values are in multiples of 100 RPM.
     • Example: 0x1E = 3000 RPM.
     • Safety limit: The app restricts speed to a max of 5500 RPM to avoid (potential) fan damage, although not needed.

TODO

• Feature: auto-adjust fan speed based on temperature