Hacking Routers Like It’s 2008

Cytron's cheaper Raspberry Pi 4 boards are a solid deal if you can live with 30% less speed

Cytron bán bo mạch Raspberry Pi 4 (4GB RAM) với giá 87,25 USD thay vì 110 USD tiêu chuẩn, nhưng chúng chỉ chạy ổn định ở mức 1,25GHz (chậm hơn 30% so với tiêu chuẩn 1,8GHz). Những bo mạch này vẫn hoạt động đầy đủ, phù hợp cho người dùng chấp nhận tốc độ thấp hơn.

Lập trình viên nên đọc bài này để biết cách cân nhắc hiệu suất và chi phí khi chọn thiết bị Raspberry Pi 4, đặc biệt khi dự án yêu cầu độ ổn định cao hơn là tốc độ tối đa.

Part 3: Ubuntu 26.04 on an AMD Ryzen 5 7545U mini PC

A hands-on review of Ubuntu 26.04 LTS running on the GEEKOM A7 2026 Edition mini PC powered by an AMD Ryzen 5 7545U. The review covers installation in dual-boot with Windows 11, CPU and GPU benchmarks (Geekbench 6, 7-Zip, Unigine Heaven), NVMe SSD storage performance (4,596 MB/s sequential read), 2.5GbE and WiFi 6 networking tests, YouTube 4K/8K playback results, thermal performance under stress (stable at 3.8–3.9 GHz, 90°C), fan noise measurements (38–48 dBA), and power consumption (idle ~5W, full load ~37W). Ubuntu performed well overall with no major issues, and a WiFi stability bug seen on Windows was absent on Linux. Main limitations are modest 3D graphics performance and lower-than-expected Speedometer scores.

AI Model Creates Conlangs Beyond Human Imagining

Researchers at Princeton have developed AI-driven methods to design radio-frequency integrated circuits (RFICs) from scratch, bypassing decades of human-crafted design templates. Using a reinforcement learning framework combined with an AI-based electromagnetic emulator and inverse design, the system can generate novel circuit architectures in minutes rather than months. The resulting chips — which look nothing like human-designed ones — have outperformed state-of-the-art silicon power amplifiers in bandwidth, output power, and efficiency. A diffusion model was also developed to make AI-generated designs more interpretable by allowing engineers to dial in the spatial complexity of electromagnetic structures. Key challenges remain, including AI hallucinations and the lack of open training data, as simulation datasets are largely locked behind NDAs.

Review: Gamrombo PS5 controller - including Linux set up

A hands-on review of the Gamrombo PS5 controller, a ~£40 third-party alternative to the official DualSense. It works out of the box on Linux via USB-C and Bluetooth, registers as a Sony DualSense, and supports touchpad gestures, vibration, speaker, and 3.5mm audio. Extras include programmable macro buttons and a turbo function. Downsides include no microphone, Windows-only firmware updater distributed via WeTransfer, no charging dock support, and a slightly cheaper feel compared to the official controller.

Linux 7.2 Drops Ancient PROFIBUS Driver: Ported From SCO Unix In 1998, Unused For Years

Linux 7.2 is removing two obsolete drivers from its source tree: the DTLK ISA speech synthesizer driver and the Applicom PROFIBUS driver. The Applicom driver was originally ported from SCO Unix in 1998, has had severe coding style issues, was broken for years in early Git history, and has no known active users. Later Applicom hardware only officially supports Windows and has been discontinued. The removals together eliminate approximately 19,500 lines of code, reducing future maintenance burden.

Orange Pi 6 CIX CD8180 12-core Arm SBC gets 2.5GbE networking, smaller form factor, drops battery support

Orange Pi 6 is a new compact SBC (90x90mm) powered by the CIX P1 (CD8180) 12-core Arm Cortex-A720/A520 SoC with up to 32GB LPDDR5 RAM. Compared to the larger Orange Pi 6 Plus, it features 2.5GbE instead of 5GbE networking, drops LiPo battery support, and comes in a smaller form factor. Key specs include dual M.2 PCIe Gen4 x4 slots, multiple display outputs, a 28.85 TOPS NPU, and support for Debian, Ubuntu, Android, Windows 11, and OpenHarmony. Pricing starts at $239 for the 8GB model, reflecting the high cost of LPDDR5 RAM, making it significantly pricier than typical Orange Pi boards.

Ubuntu brings Livepatch to arm64 for rebootless kernel updates

Ubuntu vừa mở rộng tính năng Livepatch hỗ trợ kiến trúc arm64 lần đầu tiên trên Ubuntu 26.04 LTS và Ubuntu Core 26, cho phép cập nhật kernel bảo mật không cần khởi động lại. Tính năng này yêu cầu đăng ký Ubuntu Pro (miễn phí cho cá nhân trên 5 máy) và chỉ áp dụng cho kernel (không bao gồm linux-raspi, nên Raspberry Pi không hỗ trợ).

Là lập trình viên phát triển ứng dụng trên các hệ thống ARM64 như cloud công nghệ lớn (AWS, Azure, GCP), bạn nên đọc bài này để hiểu cách tối ưu hóa bảo mật hệ thống mà không cần tạm dừng hoạt động, giúp tăng hiệu suất và giảm thời gian downtime trong sản phẩm của mình.