Explore embedded Linux debugging techniques in this comprehensive conference talk. Learn effective approaches and planning strategies for tackling complex hardware interactions. Discover how to reliably obtain printfs from various software layers, including the kernel and userspace, utilizing physical serial ports. Gain insights into embedded debuggers and diverse GDB use-cases. Master popular tools such as strace, perf, and Wireshark, while uncovering the secrets of kernel special files. Follow along as the speaker guides you through common debugging mistakes, practical examples, and experiments, concluding with a summary and Q&A session.