The SMBus standard specifies an address resolution protocol (SMBus ARP.) It has two key features :

Building on top of Rouslan Dimitrov's Microcontroller Class D Amplifier, I developed the idea to feed the power amplifier with PCM data directly. Rouslan does some dithering and noise shaping, but I'm convinced that proper interpolation would sound better. The ATtiny is too slow to do even cubic interpolation so I'll move that into the host.

This will greatly enhance the usefulness of QEMU virtual serial ports, because the Linux kernel interprets a break on the serial console as a SysRq, but there is currently no way to pass this signal over a pseudo-terminal.

Look once again on Xperia Tablet Z and try to have there openSUSE running natively as alternative operating system.

Some customers are still stuck in a world of 32bit. On ARM64, we have two options for those poor folks:

Tronsmart has a Rockchip rk3368 based set-top-box [1].

AFAIK, wireshark is the best Linux tool for analyzing network traffic. Primarily intended for Ethernet networks, there is now also support for very different protocols (e.g. USB). Sadly, there is no support for fibre channel, most likely because there is even no infrastructure in the kernel.

Recently I became a (not very proud) owner of Acer Aspire Switch 10E, a small notebook/tablet convertible based on Intel baytrail platform. Replacing preinstalled (32-bit!) Windows 8.1 with (64-bit) openSUSE proved more challenging than expected, mostly because the device is haunted by a 32-bit UEFI so that it took me a week to make it boot without an external USB flash disk.

We had old arndale images working, but those were based on openSUSE-12.x which is now long obsolete and bad (e.g. missing security updates).

The i2c-i801 kernel driver (for SMBus controller on most x86 Intel systems) has a lot of pending upstream patches from various contributors. There are bug fixes, clean-ups and new features. Without proper reviewing and merging work, most of the effort is likely to be lost.

The GPD Win is a Nintendo 3DS XL sized PC featuring a keyboard and gaming controls. Having openSUSE working on it would be great, unfortunately Tumbleweed doesn't work at all on it and Leap 42.2 is lacking many important features.

There seems to be an overall consensus that the ioctl interface used by ethtool is a poor design as it's inflexible, error prone and notoriously hard to extend. It should clearly be replaced by netlink and obsoleted. Unfortunately not much actual work has been done in that direction until this project started.

Lately the necessary patches to get rudimentary support for the Mediatek chromebook with a mainline kernel got posted. There are some hacks and I'll work on some good solution to get graphics go, at least.

Problem statement

Once a kernel is built, a developer/janitor may want to boot the kernel for various reasons, such as performing simple boot test or running tests and workloads from user space or simply playing around in a shell. However, an easy to use and a descriptive tool to perform those tasks doesn't exist to our knowledge.

The state of the art of sysv/posix ipc benchmarking is a combination of ad-hoc programs scattered over the internet. While some mechanisms, such as sysv semaphores, have a lot of coverage, others really lack (message queues), and some are simply non-existent; albeit some of the legacy flavors we aren't too concerned with, other than them being functionally correct.