gfp_kh @gfp_kazuki@fedibird.com

Hans ReiserからReiserFSについてのお手紙来てる!????

LKML: "Fredrick R. Brennan": Hans Reiser on ReiserFS deprecation
https://lkml.org/lkml/2024/1/18/245

Bang Dream It's My Golang!!!!!

For those of you who remember stuxnet, more details about how the virus actually might have gotten into the system it was designed for has been disclosed thanks to the Volksrant:

https://www.volkskrant.nl/kijkverder/v/2024/sabotage-in-iran-een-missie-in-duisternis~v989743/

(disclaimer, yes, it's in Dutch, but tools like google translate work well on it, and no, my Dutch is not good enough to read it in the native form, still working on that, ik lees een beetje Nederlands.)

ハレキャン△

デザイナーが知っておくべき大事なこと: 赤は紫外線に弱い

Wasm3 の作者，自宅をロシア軍に破壊されたらしくて開発がほぼ止まってしまったらしい😨 https://twitter.com/wasm3_engine/status/1736712528883769670

For the 2023 ClangBuiltLinux meetup, I decided to revisit my benchmarks comparing how building LLVM with different optimizations such as LTO, PGO, and BOLT can impact how fast it can build Linux kernels:

https://github.com/ClangBuiltLinux/cbl-meetup-2023/blob/9b399fe8f3b886d549105a82068e3a441e496b46/nathan_making_llvm_faster_with_build_time_optimization_technologies.pdf

TL;DR: PGO and BOLT can give huge wins, LTO not so much.

It was pretty wild to see how much PGO made a difference, almost twice as fast in some cases... The kernel.org LLVM toolchains I provide are built with PGO and BOLT for this reason:

https://mirrors.edge.kernel.org/pub/tools/llvm/

​​Speaker support is here! 🔈​🔉​🔊

We are enabling speaker support on Fedora Asahi Remix for our most popular model, the 13" M1 MacBook Air. Just update your system and reboot to give it a try!

sudo dnf --refresh update

Learn more about our speaker support and all the work that went into it here. We're starting with this model to get some feedback, but we expect to enable speakers on all the other laptop models soon!

This came up in a private thread about a kernel patch review where the contents were created with an "AI" tool, so I figured I might as well put it somewhere a bit more public as people don't seem to really understand the issues involved:

My policy is that I do not take any output of any "AI" tools unless the providence of the data that was used to feed the AI tool can be proven to be under the proper copyright rules as to be compatible with the GPLv2 license.

So in other words, nothing from chatgpt at all, that's obviously full of copyrighted works that are not allowed to be reused in this manner.

Sleep/wake with audio works! 🥳​

rkgk

はかせ

A local root vulnerability in glibc https://lwn.net/Articles/946381/ #LWN

OH MY FUCKING GOD.

Pictured: Apple's M2 MacBook Air speaker response (measured with a mic), and the response you get when you zero out every 128th sample of a sine sweep.

They have a stupid off-by-one bug in the middle of their bass enhancer AND NOBODY NOTICED NOR FIXED IT IN OVER A YEAR.

So instead of this (for a 128-sample block size):

for (int sample = 0; sample <= 127; sample++)
    // process sample

They did this:

for (int sample = 0; sample < 127; sample++)
    // process sample

Legendary audio engineering there Apple.

We can now, very confidently say the audio quality of Asahi Linux will be better than Apple's. Because we don't have blatant, in your face off-by-one bugs in our DSP and we actually check the output to make sure it's good 😂​

FFS, and people praise them for audio quality. I get it, the bar is so low it's buried underground for just about every other laptop, but come on...

However, despite our new power supply being able to provide them to power other devices, the #Pi5 PMIC will not negotiate higher voltages (9V, 12V). If you want to use a third-party USB-PD supply with Raspberry Pi 5 then it will need to provide 5A at 5V as the new Raspberry Pi 5 operates at 5V only.

Answering some questions about the Raspberry Pi 5: https://www.jeffgeerling.com/blog/2023/answering-some-questions-about-raspberry-pi-5 #RaspberryPi #Pi5

Raspberry Pi 5 Announced: The new Raspberry Pi 5 features a more powerful GPU with Open Source drivers developed by Igalia 🔥🔥🔥🔥

https://www.igalia.com/2023/09/28/Raspberry-Pi-5-Announced.html

Samsung made a Flip 5 bus stop with Flip chairs in Budapest 😂

夏服ポニテホシノが大好きです #ブルアカ