Linux Kernel

RISC-V boards boot headless with no display output or BIOS setup. HFI BIOS fixes this by extending U-Boot with a POST-like power-on screen and a classic Award BIOS-style setup utility.

Learn how to use sysctl to tune Linux kernel parameters at runtime for better networking performance, memory management, and system security. This comprehensive guide covers Ubuntu, Fedora, and Arch-based distributions with verified terminal output, modern drop-in file configuration, security hardening …

Every Linux user breaks their system eventually. This guide covers rescue mode, filesystem repair, GRUB recovery, root password resets, and chroot workflows across Ubuntu, Fedora, and Arch Linux.

Complete guide to Bluetooth on Linux for 2026. Learn to pair your Bluetooth headphones, mice, and keyboards using bluetoothctl or Blueman on Ubuntu, Fedora, and Arch Linux. Understand A2DP and HFP audio profiles, fix persistent connection drops, resolve firmware loading …

BCachefs tools v1.38.6 drops experimental status, but the kernel removed it as of 6.18. We cover DKMS installation, snapshots, compression, RAID, performance tuning, and when to choose BCachefs over Btrfs or ZFS.

TLP, PowerTOP, CPU governors, sleep modes, hibernation, battery thresholds, and kernel parameters. Everything you need to fix Linux laptop battery life in 2026.

ublk zero-copy I/O eliminates data copying between kernel and userspace for virtual block devices. I tested three zero-copy mechanisms on Arch Linux with kernel 7.0.12 and ubdsrv 1.1, benchmarking read speeds at 15.4 GB/s through the io_uring passthrough path.

Linux Kernel 7.1 introduces a complete NTFS driver rewrite, but ntfs3 from Paragon is already 43x faster than ntfs-3g on writes. I tested all three NTFS drivers across Ubuntu, Fedora, and Arch, verified Btrfs improvements, and documented the new ublk …

Rust has become the defining infrastructure shift in Linux. This complete guide maps every major Rust project in the ecosystem: kernel drivers, uutils coreutils, Asterinas OS, Redox OS, Git 2.55, and YSERVER. Includes verified installation commands for Ubuntu, Fedora, and …

Marcus’s Kernel Brief: HDMI 2.1 has been the elephant in the room for Linux desktop users for years. If you own an AMD, Intel, or NVIDIA GPU and a 4K 120Hz monitor, you have probably stared at your BIOS settings …