EDID is the first conversation between the GPU and the monitor. Without correct EDID, you get a black screen or wrong resolution.
To master the Linux graphics subsystem, you can engage in hands-on projects ranging from low-level kernel driver development to high-level compositor design. These projects explore the (Direct Rendering Manager), (Kernel Mode Setting), and the Wayland Book 1. Build a "Hello World" Kernel Module Hands On Projects For The Linux Graphics Subsystem
: Provides a deep dive into the drm_device structure, driver initialization, and memory management through GEM (Graphics Execution Manager). Hands-on Projects for the Linux Graphics Subsystem (Ebook) EDID is the first conversation between the GPU
: The kernel subsystem responsible for interfacing with GPUs. (Kernel Mode Setting)