ASUS ROG Astral Linux Driver Adds Real-Time 12VHPWR Monitoring

ASUS ROG Astral graphics cards now have a dedicated open-source driver that solves a critical monitoring gap for Linux users. The release of the astral-hwmon driver gives owners of high-end GPUs real-time visibility into their power interface health. This capability addresses concerns regarding the 12VHPWR connector's thermal performance by providing users with precise data to help prevent hardware damage. Prior to this release, Linux users did not have a standardized method to monitor the electrical status of the graphics card's power input.

Open-source driver exposes six-channel power data for Linux users

The driver targets the entire ROG Astral lineup, which includes the RTX 5090 OC, RTX 5090D OC, RTX 5090 Matrix, RTX 5090 LC, and RTX 5080 OC models. Open-source developer Krzysiek Sokolowski created the software to integrate these specific ASUS cards into the Linux ecosystem. The code is available on GitHub, allowing the community to review and maintain the driver. The driver supports various models within the ROG Astral lineup, including standard and special edition variants.

• Monitoring Chip: ITE IT8915FN
• Driver Name: astral-hwmon
• Monitoring Capability: Six-channel current and voltage monitoring for 12VHPWR interface
• Compatibility: Linux HWMON subsystem

At the hardware level, the ROG Astral cards feature an onboard ITE IT8915FN monitoring chip. This chip is responsible for collecting detailed power data from the 12VHPWR interface. The new driver exposes six channels of current and voltage readings through the Linux HWMON subsystem. Users can access detailed electrical metrics directly from the kernel space using standard Linux tools, avoiding the need for proprietary software.

The driver integrates with standard Linux monitoring tools like psensor, so users do not need to install proprietary ASUS utilities. A companion utility called astral-guard works alongside the driver to provide alerting capabilities. It uses ASUS Power Detector+ rules to identify potential faults in the power delivery system. The companion tool can generate alerts if the power interface parameters deviate from safe operating limits.

This release offers a functional monitoring solution for Linux users with ASUS high-end graphics cards. As an open-source driver, it allows for community review and potential long-term maintenance of the hardware monitoring features. Users can now verify the electrical integrity of their 12VHPWR connections using standard system tools.