Version 5.12.0.38 is a widely deployed update, often distributed through the and bundled within larger AMD Ryzen Chipset Driver packages.
Since the SMBus manages power state transitions, a faulty exclusive driver can cause: amd smbus driver 512038 exclusive
The System Management Bus (SMBus) is a simple, two-wire bus used for low-speed communication on the motherboard. It connects the system processor to low-power devices, including: Thermal sensors (monitoring temperature) Voltage regulators (system health monitoring) System fan controllers Version 5