Reproducible
engineering
experiments

Enable Direct Rendering Manager (DRM) kernel debug logging: set drm.debug=0x1f boot parameter, inspect dmesg, and debug display stack output.

While out-of-tree loadable kernel modules ( .ko ) are useful for out-of-band development, integrating a driver into the Linux kernel source tree allows it to be configured via make menuconfig and compiled statically ( vmlinux ) or as a modular driver target. Step 1: Create driver directory and C s

Test Linux kernel framebuffer drivers in C: open /dev/fb0, fetch screen dimensions via FBIOGET_VSCREENINFO ioctl, and paint pixels via mmap().

Debug ARM ELF binaries on x86_64 host: run qemu-arm -g 1234 ./arm_binary, attach gdb-multiarch remote target localhost:1234, and inspect registers.

Compile a custom Linux kernel for Android AOSP on Ubuntu: setup ARCH=arm64 CROSS_COMPILE toolchain, configure defconfig, build Image.lz4-dtb.

Master custom embedded Linux kernel compilation: configure defconfig, strip bloated subsystems, tune menuconfig, compile DTBs, and boot on ARM hardware.

Fix Yocto BitBake build warning "QA Issue: binary was already stripped": configure INSANE_SKIP += "already-stripped" or prevent premature binary stripping.

Optimize C/C++ application performance on embedded Linux: profile CPU bottlenecks using perf, reduce RAM footprint, use static linking, and tune LTO.

Set up an embedded Linux development environment on Ubuntu: install cross-compilers, QEMU, GDB, Yocto dependencies, and TFTP boot servers.