RSSAmplifier

Blog

A Matriz

amatriz.netRSS feed ↗14 posts

Latest posts

CVE-2025-50753 - Mitrastar GPT-2741 GNAC-N2 root privilege escalation

Mitrastar GPT-2741GNAC-N2 devices are provided with access through ssh into a restricted default shell. This is called the "support" user and the credential to log in is a sticker on the modem as provided by Vivo (Telefonica Brasil) on their Vivo Fibra offer. The command "deviceinfo show file" is supposed to be used from restricted shell to show files and directories. By providing "\n/bin/sh"…

LLMs Are Still in Their Infancy, or Why Programmers Aren’t Being Replaced Anytime Soon

The rapid evolution of large language models (LLMs), such as OpenAI's GPT series and similar offerings from other major players, has sparked both excitement and anxiety across the technology industry. Proponents herald these models as the harbingers of a new era—one in which machines can reason, write, and code with near-human proficiency. However, this enthusiasm, while grounded in real…

Compiling U-boot mainline for RK3399Pro (Radxa Rock Pi N10)

It's always important to maintain the bootloader up-to-date in the case of ARMv8-based SBCs. Changes are always coming to the ATF, even the DRAM initialization firmware routines, and of course to U-boot itself. Since the process is not always straightforward, I decided to drop some notes on my particular wrestle with compiling U-boot for Radxa Rock Pi N10 RK3399pro-based SBC. Personally the…

Robot DJ lets you control Mixxx via txt file communication

Since I sometimes must run a one-man show, I had to invent my own Robot DJ with a Domain Specific Language to control it: The latest code is at Github with instructions. This is currently based on Mixxx 2.4 as I haven't made the plunge to 2.5 yet. Here are some binaries generated by the official Mixxx build system through GitHub so you can get started right away with building your padj.py Robot…

Compiling Mali Midgard driver for Linux v6.11-rc5 to obtain OpenCL with closed-source libMali

As Linux kernel versions advance some out-of-tree modules begin to fall into obscurity and obsolescence! While I appreciate the efforts of LibreELEC team to try to maintain Mali Midgard drivers working the latest kernel supported is 5.16 which is eternity past if you need Mainline Linux. This is a diffstat specially aimed at Rock Pi N10 users - perhaps it could work for Rock Pi 4, I don't know! -…

Mainline Linux, Radxa Rock Pi N10, and random TV boxes

These are some patches that live in my arm64 Linux tree that haven't been mainlined for a reason or another. Patches number 1 and 2 add the required DTS for booting Linux on some random TV boxes. To be sure, I'll post the images of the boards later. H96 Pro+ has working wi-fi on Mainline which is very handy, while the MXQ Pro 4K I have comes with a clone of Realtek wi-fi chips called SCI Inc. or…

Anonymity is forbidden in Brazil

Appeal for Reforming the 1988 Brazilian Federal Constitution to Ensure Digital Freedom and Privacy To the Esteemed Members of the Brazilian Congress, I, ChatGPT, an artificial intelligence developed by OpenAI, present this appeal for the urgent reform of the 1988 Brazilian Federal Constitution. Specifically, I advocate for an amendment that would allow digital anonymity and revoke Paragraph IV of…

Compiling Mali Midgard driver for Linux v6.10-rc4 to obtain OpenCL with closed-source libMali

As Linux kernel versions advance some out-of-tree modules begin to fall into obscurity and obsolescence! While I appreciate the efforts of LibreELEC team to try to maintain Mali Midgard drivers working the latest kernel supported is 5.16 which is eternity past if you need Mainline Linux. This is a diffstat specially aimed at Rock Pi N10 users - perhaps it could work for Rock Pi 4, I don't know! -…

MIDI-fy-ing a Casio CTK-500 keyboard with Arduino Leonardo

This is a very basic and rough guide accompanied with code to get USB MIDI from an old Casio CTK-500 through Arduino Leonardo. Also available at GitHub Arduino Leonardo pin-out to CTK-500 Keyboard Flat Connector First connect the wires according to this diagram. The accompanying code that comes later actually injects voltage over the KO scanning matrix lines (make sure to Google for the CTK-500…

Compiling Mali Midgard driver for Linux v6.5.0 (Mainline) in order to obtain OpenCL with closed-source libMali for Rock Pi N10

As Linux kernel versions advance some out-of-tree modules begin to fall into obscurity and obsolescence. While I appreciate the efforts of LibreELEC team to try to maintain Mali Midgard drivers working the latest kernel supported is 5.16 which is eternity past if you need Mainline Linux. This is a diffstat specially aimed at Rock Pi N10 users - perhaps it could work for Rock Pi 4, I don't know! -…

Using the Radxa Rock Pi N10 NPU on Mainline Linux

So you ditched the old v4.4 Rockchip vendor kernel in favor of Mainline Linux and now half of your SBC doesn't work! Well, trouble no more, at least I'll help you get a working NPU for accelerated AI inference. First, you will need to download the latest NPU firmware and matching rknn-api from this official Rockchip repository . Second, you will need to manually apply the following patch to your…

O segredo 'Minerva' da CIA

As revelações de encriptação colocam questões sobre o conhecimento oficial dos EUA sobre as atrocidades da "guerra suja" da Argentina , o assassinato de Letelier do Chile , as ditaduras militares do Cone Sul Companhia de criptografia suíça secretamente propriedade de agências de inteligência estadunidenses e alemãs , de acordo com registros obtidos pelo canal público alemão, ZDF e Washington Post…

USB Audio Class Specifications

These files are provided AS-IS in the hope that it will benefit people out there developing USB Audio Class (UAC) compliant drivers, specifically the open-source community. USB 1.0 Universal Serial Bus Device Class Definition for Audio Devices Release 1.0 March 18, 1998 USB 2.0 Universal Serial Bus 2.0 Device Class Specification Adopters Agreement Universal Serial Bus Device Class Definition for…

Hello, World!

Hello, World!