Worked on enhancing the stability of Linux graphics workflows in the LizardByte/Sunshine repository by addressing a critical bug in the XDG portal DMA-BUF path. Focused on system programming and graphics programming using C++ and Linux development skills, the work involved removing the external_only argument from eglQueryDmaBufModifiersEXT to prevent incorrect DMA-BUF modifier handling. This targeted fix reduced edge-case failures and improved the reliability of DMA-BUF modifier processing within the Sunshine codebase. The contribution centered on ensuring correctness in the Linux graphics pipeline, resulting in a more robust experience for users relying on DMA-BUF integration in their workflows.