New Linux Patches Enable ASUS ROG Ryujin III Monitoring Support

Before these patches, Linux had no way to query the sensor data embedded in the ASUS ROG Ryujin III AIO cooler, so users had to rely on vendor-specific Windows software for basic telemetry. The pending patches add a driver that makes the cooler’s temperature, pump speed and fan speed available to the operating system. This changes the software environment by providing a new source of hardware metrics that can be accessed through conventional Linux monitoring mechanisms.

To use the support, engineers must apply the patch set to the kernel source, rebuild the affected module (or load it as an out-of-tree driver), and reinstall the kernel. This adds a build step and requires verification that the new module loads cleanly alongside existing drivers. Future kernel upgrades will need the patches rebased unless they are accepted upstream.

The patches provide only monitoring capabilities; they do not yet enable fan-curve adjustments or lighting control from Linux. Because the driver is tied to the specific hardware identifier of the Ryujin III, other coolers from ASUS or different manufacturers will not automatically gain this feature. If the cooler is removed or replaced, the monitoring interface simply disappears without destabilizing the system.

The new monitoring capability allows Linux-based systems to read the cooler’s sensor data directly, eliminating the need to boot into Windows or use proprietary software for telemetry. This can be integrated with existing health-checking scripts or monitoring agents. It also supports proactive thermal management by making temperature and pump speed visible to the OS.