ASUS ROG Laptop Firmware Bug: A 13ms CPU Core Hold-up

2025-09-17
ASUS ROG Laptop Firmware Bug: A 13ms CPU Core Hold-up

Many ASUS ROG gaming laptop owners experience system stuttering, audio crackling, and other performance issues. Conventional fixes fail because the root cause lies in a deep-seated ACPI bug within the BIOS firmware. A technical investigation reveals a firmware interrupt handler sleeping for 100 milliseconds, effectively blocking a CPU core. This periodically triggers attempts to power cycle the dedicated GPU, even in direct-connect mode, potentially leading to blue screen crashes. The bug stems from flawed firmware design, neglecting proper interrupt context handling and lacking platform awareness. Millions of ASUS gaming laptops are affected, with the manufacturer yet to respond.

Hardware Firmware Bug