Arch Linux: Recent news updates
linux-firmware >= 20250613.12fe085f-5 upgrade requires manual intervention

With 20250613.12fe085f-5, we split our firmware into several vendor-focused packages. linux-firmware is now an empty package depending on our default set of firmware.

Unfortunately, this coincided with upstream reorganizing the symlink layout of the NVIDIA firmware, resulting in a situation that Pacman cannot handle. When attempting to upgrade from 20250508.788aadc8-2 or earlier, you will see the following errors:

linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad103 exists in filesystem
linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad104 exists in filesystem
linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad106 exists in filesystem
linux-firmware-nvidia: /usr/lib/firmware/nvidia/ad107 exists in filesystem

To progress with the system upgrade, first remove linux-firmware, then reinstall it as part of the upgrade:

# pacman -Rdd linux-firmware
# pacman -Syu linux-firmware

source
(author: Jan Alexander Steffens)

Daniel Lemire's blog
Life expectancy of men in Canadian provinces

Telegraph | source

Telegraph

Life expectancy of men in Canadian provinces

n North America, my home province of Quebec has a slightly higher life expectancy than the rest of the country. It is also a poorer-than-average province, so that is maybe surprising. For 2023, the life expectancy at birth in Ontario was 82.33 years, whereas…

Chips and Cheese
AMD's Freshly-baked MI350: An Interview with the Chief Architect
#ChipAndCheese

Telegraph | source
(author: George Cozma)

Telegraph

AMD's Freshly-baked MI350: An Interview with the Chief Archi…

Hello you fine Internet folks,At AMD's Advancing AI 2025, I had the pleasure of interviewing Alan Smith, AMD Senior Fellow and Chief Instinct Architect, about CDNA4 found in the MI350 series of accelerators. Hope y'all enjoy! Transcript below has been edited…

Arch Linux: Recent news updates
Plasma 6.4.0 will need manual intervention if you are on X11

On Plasma 6.4 the wayland session will be the only one installed when the users does not manually specify kwin-x11.

With the recent split of kwin into kwin-wayland and kwin-x11, users running the old X11 session needs to manually install plasma-x11-session, or they will not be able to login. Currently pacman is not able to figure out your personal setup, and it wouldn't be ok to install plasma-x11-session and kwin-x11 for every one using Plasma.

tldr: Install plasma-x11-session if you are still using x11

source
(author: Tomaz Canabrava)

PEK-HND

Re: searchlight

微软 Outlook consumer 消费者电子邮件业务最近加强了对大批量发信方的安全要求，具体来说此前只会导致邮件被放入垃圾邮件箱的 SPF/DKIM/DMARC 问题现在会无条件退信，错误代码 550; 5.7.515，这一改动是在 5 月 5 日生效的，收件方无法通过任何方式绕过这一问题，包括将发件方加入可信发件人列表 https://support.microsoft.com/en-us/topic/fix-ndr-error-550-5-7-515-in-outlook-com-34cfe8f8…

笑了，感觉过段时间闲下来想写篇文章讲几个现代人需要自建邮件系统的理由

微软 Outlook consumer 消费者电子邮件业务最近加强了对大批量发信方的安全要求，具体来说此前只会导致邮件被放入垃圾邮件箱的 SPF/DKIM/DMARC 问题现在会无条件退信，错误代码 550; 5.7.515，这一改动是在 5 月 5 日生效的，收件方无法通过任何方式绕过这一问题，包括将发件方加入可信发件人列表

https://support.microsoft.com/en-us/topic/fix-ndr-error-550-5-7-515-in-outlook-com-34cfe8f8-6fbf-457e-9e8b-9e4dbaf4e0ef → https://techcommunity.microsoft.com/blog/microsoftdefenderforoffice365blog/strengthening-email-ecosystem-outlook%E2%80%99s-new-requirements-for-high%E2%80%90volume-senders/4399730

目前已知 QQ 邮箱 @qq.com 不满足这一要求，可以认为腾讯其他相关的服务也不满足，尚未就此事联系腾讯客服（我要睡觉）

Microsoft

Fix NDR error "550 5.7.515" in Outlook.com - Microsoft Support

Learn how to fix email issues for error code 5.7.515 when sending email to Outlook.com (the sending domain does not meet the required authentication level).

Resurrecting a dead torrent tracker and finding 3M peers https://kianbradley.com/2025/06/15/resurrecting-a-dead-tracker.html

Kian Bradley’s Blog

Resurrecting a dead torrent tracker and finding 3 million peers

So I was uh, downloading some linux isos, like usual. It was going slowly, so I opened up the Trackers tab in qBittorrent and saw the following:

Chips and Cheese
AMD’s CDNA 4 Architecture Announcement
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

AMD’s CDNA 4 Architecture Announcement

CDNA 4 is AMD’s latest compute oriented GPU architecture, and represents a modest update over CDNA 3. CDNA 4’s focus is primarily on boosting AMD’s matrix multiplication performance with lower precision data types. Those operations are important for machine…

Arch Linux: Recent news updates
Transition to the new WoW64 wine and wine-staging

We are transitioning the wine and wine-staging package to a pure wow64 build. This change removes the dependency on the multilib repository for wine and wine-staging.

The main reason for this is to align with upstream Wine development, which simplifies packaging and the dependency chain.

Potential Issues:

● OpenGL Performance: A known limitation of the new WoW64 mode is reduced performance for 32-bit applications that use OpenGL directly
● Breaking Changes: Existing 32-bit prefixes needs to be recreated

If you are facing issues with 32 bit prefixes, please recreate these and reinstall the application.

source
(author: Peter Jung)

Daniel Lemire's blog
Don’t argue: build

Telegraph | source

Telegraph

Don’t argue: build

Prescientific and preindustrial thought tied truth to authority and tradition. “We’ve always done it this way.” “The king decrees it.” “We know this is how it’s done.” The scientific and industrial revolutions shattered this mindset. Suddenly, outsiders could…

Daniel Lemire's blog
Metcalfe’s Law against Brooks’ Law

Guido van Rossum, Python’s creator, recently said: “We have a huge community, but relatively few people, relatively speaking, are contributing meaningfully.”

This highlights a paradox.

Software thrives on the network effect, or Metcalfe’s Law, where a system’s value scales with the square of its users. Linux excels because its vast user base fuels adoption, documentation, and compatibility everywhere.

But larger teams don’t build better software—often the reverse. Brooks’ Law, from Fred Brooks’ The Mythical Man-Month, shows that adding people increases communication overhead, slowing progress. The Pareto Principle (80/20 rule) also applies: a small minority drives most meaningful contributions. Great software often stems from a single visionary or a small, cohesive team, not a crowd.

The network effect applies primarily to users, not necessarily to creators.

source

Chips and Cheese
AMD’s Pre-Zen Interconnect: Testing Trinity’s Northbridge
#ChipAndCheese

Telegraph | source
(author: Chester Lam)

Telegraph

AMD’s Pre-Zen Interconnect: Testing Trinity’s Northbridge

Today, AMD’s Infinity Fabric interconnect is ubiquitous across the company’s lineup. Infinity Fabric provides well-defined interfaces to a transport layer, and lets different functional blocks treat the interconnect as a black box. The system worked well…

Jemalloc Postmortem https://jasone.github.io/2025/06/12/jemalloc-postmortem/

jasone.github.io

Jason Evans

The jemalloc memory allocator was first conceived in early 2004, and hasbeen in public use for about 20 years now. Thanks to the nature of open source software licensing,jemalloc will remain publicly available indefinitely. But active upstream development…

Daniel Lemire's blog
Let us bury the linear model of innovation

Telegraph | source

Telegraph

Let us bury the linear model of innovation

There is an extremely naive model of science and innovation called the linear model: The model postulated that innovation starts with basic research, isfollowed by applied research and development, and ends with production and diffusion. According to Godin…

Reviewer A:

I greatly appreciate the authors' strong emphasis on realism and implementability throughout their proposal.

https://ericrotenberg.wordpress.ncsu.edu/cbp2025-workshop-program/

Eric Rotenberg

CBP2025 Workshop Program

NC State ECE

杰哥的{运维，编程，调板子}小笔记

在鸿蒙电脑上的虚拟机内启动 Linux¶

背景¶

最近在研究鸿蒙电脑，群友 @Fearyncess 摸索出了，如何在鸿蒙电脑上的虚拟机内启动 Linux，而不是 Windows。在此做个复现并记录。

方法¶

目前鸿蒙的应用市场上有两家虚拟机，我用 Oseasy 虚拟机，但是理论上铠大师也是可以的。

首先需要在 U 盘上，把一个 UEFI arm64 的 Linux 安装盘写进去。我用的是 Ventoy + Debian Installer，理论上直接写例如 Debian 发行版的安装 ISO 也是可以的。

然后把 U 盘插到鸿蒙电脑上，打开 Windows 虚拟机，直通到虚拟机里面，保证虚拟机里面可以看到 U 盘。

接着，进入 Windows 磁盘管理，缩小 Windows 的 NTFS 分区，留出空间。注意 Windows 启动的时候会自动 growpart，所以装 Debian 前，不要回到 Windows。装好以后，可以继续用 Windows。

接着，重启 Windows，同时按住 Escape，进入 OVMF 的界面，然后选择 Boot Manager，从 U 盘启动，然后就进入 Ventoy 的界面了。

剩下的就是正常的 Linux 安装过程了，分区的时候，注意保留 Windows 已有的 NTFS，可以和 Windows 用同一个 ESP 分区。网络的话，配置静态 IP 是 172.16.100.2，默认网关是 172.16.100.1 即可。重启以后，在 grub 界面，修改 linux 配置，在 cmdline 一栏添加 modprobe.blacklist=vmwgfx，这样就能启动了。内核版本是 Debian Bookworm 的 6.1。6.12 的版本会起不来。

source

杰哥的{运维，编程，调板子}小笔记
终端模拟器的文字绘制

Telegraph | source

Telegraph

终端模拟器的文字绘制

终端模拟器的文字绘制¶ 背景¶ 最近在造鸿蒙电脑上的终端模拟器 Termony，一开始用 ArkTS 的 Text + Span 空间来绘制终端，后来发现这样性能和可定制性比较差，就选择了自己用 OpenGL 实现，顺带学习了一下终端模拟器的文字绘制是什么样的一个过程。 读取字形¶ 文本绘制，首先就要从字体文件中读取字形，提取出 Bitmap 来，然后把 Bitmap 绘制到该去的地方。为了提取这些信息，首先用 FreeType 库，它可以解析字体文件，然后计算出给定大小的给定字符的 Bitmap。但是，这个…

Visualize and debug Rust programs with a new lens https://firedbg.sea-ql.org/