A hobbyist built a Python-based network service to block rogue HDMI-CEC Zone 2 requests from an Nvidia Shield that were causing a Denon/Marantz receiver to turn on unexpectedly. The script listens for these unwanted CEC commands and intercepts them via the receiver's network API. HDMI-CEC compatibility issues are a widespread frustration, with many users resorting to disabling CEC entirely. Nvidia has since released a Shield update that reportedly addresses some of these CEC bugs.
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