During their tenure, D. Dadap focused on resolving a critical HDMI audio output issue in the geerlingguy/linux repository. They restored missing HDMI codec entries in the nvhdmi.c and tegrahdmi.c files, enabling proper HDMI audio functionality across multiple GPU models. Working primarily in C, Dadap applied low-level driver debugging and kernel development skills to ensure the fix integrated cleanly without introducing regressions. Their approach improved hardware compatibility and user experience for media setups by reestablishing the HDMI audio path. The work demonstrated depth in Linux kernel audio driver maintenance and contributed to reducing potential support issues related to audio output.