📰 Immutable Linux distros sound terrible on paper, but a month of Silverblue proved me wrong
I remember when I first learned about immutable distros. I'm a big fan of Fedora operating systems, and one day, I decided to check out all the spins you can download. One of them was Fedora Silverblue, the immutable GNOME version of the operating system. I had no idea what an immutable OS was, and the more I researched what they were, the more convinced I was that they were a flat downgrade to a mutable one.
🔗 Source: https://www.xda-developers.com/immutable-linux-terrible-paper/
#fedora #gnome #linux
👉@sysadminoff
https://xda-developers.com/immutable-linux-terrible-paper
I remember when I first learned about immutable distros. I'm a big fan of Fedora operating systems, and one day, I decided to check out all the spins you can download. One of them was Fedora Silverblue, the immutable GNOME version of the operating system. I had no idea what an immutable OS was, and the more I researched what they were, the more convinced I was that they were a flat downgrade to a mutable one.
🔗 Source: https://www.xda-developers.com/immutable-linux-terrible-paper/
#fedora #gnome #linux
👉@sysadminoff
https://xda-developers.com/immutable-linux-terrible-paper
XDA
Immutable Linux distros sound terrible on paper, but a month of Silverblue proved me wrong
The cons were pros in disguise.
📰 Zstd Improvement For Linux 7.4 To Avoid Redundant Initialization
In addition to Usama Arif's recent Linux patches for addressing a major inefficiency within the Linux kernel's Zstd compression code, he also has a separate patch series destined for Linux 7.4 to further enhance the Zstd compression/decompression performance by avoiding redundant initialization...
🔗 Source: https://www.phoronix.com/news/Zstd-Linux-7.4-Avoid-Redundant
#kernel #linux
👉@sysadminoff
https://phoronix.com/news/Zstd-Linux-7.4-Avoid-Redundant
In addition to Usama Arif's recent Linux patches for addressing a major inefficiency within the Linux kernel's Zstd compression code, he also has a separate patch series destined for Linux 7.4 to further enhance the Zstd compression/decompression performance by avoiding redundant initialization...
🔗 Source: https://www.phoronix.com/news/Zstd-Linux-7.4-Avoid-Redundant
#kernel #linux
👉@sysadminoff
https://phoronix.com/news/Zstd-Linux-7.4-Avoid-Redundant
Phoronix
Zstd Improvement For Linux 7.4 To Avoid Redundant Initialization
In addition to Usama Arif's recent Linux patches for addressing a major inefficiency within the Linux kernel's Zstd compression code, he also has a separate patch series destined for Linux 7.4 to further enhance the Zstd compression/decompression performance…
🔥1
CISA flags actively exploited ScreenConnect flaw
More than 1,000 internet-exposed ConnectWise ScreenConnect instances remain vulnerable while attackers actively exploit CVE-2026-84869, a critical authorization flaw. CISA has added the vulnerability to its Known Exploited Vulnerabilities catalog and ordered U.S. federal agencies to secure affected systems within three days.
Source
👉@sysadminoff
https://4sysops.com/archives/cisa-flags-actively-exploited-screenconnect-flaw/
More than 1,000 internet-exposed ConnectWise ScreenConnect instances remain vulnerable while attackers actively exploit CVE-2026-84869, a critical authorization flaw. CISA has added the vulnerability to its Known Exploited Vulnerabilities catalog and ordered U.S. federal agencies to secure affected systems within three days.
Source
👉@sysadminoff
https://4sysops.com/archives/cisa-flags-actively-exploited-screenconnect-flaw/
📰 Rune Keyboard-Driven IDE Is Now Open Source Under GPLv3
Rune, a GPU-rendered and keyboard-driven IDE for Linux and macOS built mainly in Go, is now open source under the GPLv3 license.
🔗 Source: /
#linux #opensource
👉@sysadminoff
https://linuxiac.com/rune-keyboard-driven-ide-is-now-open-source-under-gplv3
Rune, a GPU-rendered and keyboard-driven IDE for Linux and macOS built mainly in Go, is now open source under the GPLv3 license.
🔗 Source: /
#linux #opensource
👉@sysadminoff
https://linuxiac.com/rune-keyboard-driven-ide-is-now-open-source-under-gplv3
Linuxiac
Rune Keyboard-Driven IDE Is Now Open Source Under GPLv3
Rune, a GPU-rendered and keyboard-driven IDE for Linux and macOS built mainly in Go, is now open source under the GPLv3 license.
GNOME 51 released with auth login
GNOME 51 is out, bringing FIDO2 passkey login, a Reduced Motion option and frame scheduling changes that make UI animations and scrolling feel smoother. Core apps pick up improvements too. The desktop Maps app gains offline area downloads and live transit data, Papers now lets you add visual signatures and Nautilus speeds up the loading of large folders. While this is a more modest release than we’ve become accustomed to – some planned changes, like a GTK4 port of Disks and a slider to change touchpad scroll speed didn’t make it in – there is still plenty to look out […]
You're reading GNOME 51 released with auth login, a blog post from OMG! Ubuntu. Do not reproduce elsewhere without permission.
👉@sysadminoff
https://www.omgubuntu.co.uk/2026/09/gnome-51-released
GNOME 51 is out, bringing FIDO2 passkey login, a Reduced Motion option and frame scheduling changes that make UI animations and scrolling feel smoother. Core apps pick up improvements too. The desktop Maps app gains offline area downloads and live transit data, Papers now lets you add visual signatures and Nautilus speeds up the loading of large folders. While this is a more modest release than we’ve become accustomed to – some planned changes, like a GTK4 port of Disks and a slider to change touchpad scroll speed didn’t make it in – there is still plenty to look out […]
You're reading GNOME 51 released with auth login, a blog post from OMG! Ubuntu. Do not reproduce elsewhere without permission.
👉@sysadminoff
https://www.omgubuntu.co.uk/2026/09/gnome-51-released
Google opens Claude Opus 5 to engineers
Google has expanded internal access to Anthropic’s Claude Opus 5, allowing engineers across the company to use the rival model for coding through its Antigravity development platform. Gemini remains Google’s primary model, while Claude is restricted by per-user quotas and intended for specialized tasks.
Source
👉@sysadminoff
https://4sysops.com/archives/google-opens-claude-opus-5-to-engineers/
Google has expanded internal access to Anthropic’s Claude Opus 5, allowing engineers across the company to use the rival model for coding through its Antigravity development platform. Gemini remains Google’s primary model, while Claude is restricted by per-user quotas and intended for specialized tasks.
Source
👉@sysadminoff
https://4sysops.com/archives/google-opens-claude-opus-5-to-engineers/
👍1
Выпуск среды рабочего стола GNOME 51
После шести месяцев разработки опубликован выпуск среды рабочего стола GNOME 51. Для быстрой оценки возможностей GNOME 50 предложены специализированные Live-сборки на основе openSUSE и установочной образ, подготовленный в рамках инициативы GNOME OS. GNOME 51 также уже включён в состав экспериментальных сборок Ubuntu 26.10 и Fedora 45.
👉@sysadminoff
https://www.opennet.ru/opennews/art.shtml?num=66292
После шести месяцев разработки опубликован выпуск среды рабочего стола GNOME 51. Для быстрой оценки возможностей GNOME 50 предложены специализированные Live-сборки на основе openSUSE и установочной образ, подготовленный в рамках инициативы GNOME OS. GNOME 51 также уже включён в состав экспериментальных сборок Ubuntu 26.10 и Fedora 45.
👉@sysadminoff
https://www.opennet.ru/opennews/art.shtml?num=66292
❤1👍1
Unicode 18.0
Состоялся выпуск 18.0 стандартов Unicode.
Всего в эту версию добавлено 13007 новых символа, включая знаки трёх письменностей:
11328 знаков малой печати (Сяочжуань).
914 знака и 51 радикал чжурчжэньского письма.
311 числовых знака протоклинописи.
Также добавлены:
3 новых символа валют: мальдивской руфии, дирхама ОАЭ и оманского риала.
9 новых эмодзи: бабочка монарх, сачок, метеор, направленный влево большой палец, трескающееся лицо, направленный вправо большой палец, маяк, солёный огурец и ластик.
50 музыкальных символа: новые варианты пауз, скрипичных ключей, знаков альтерации, тремоло, фермат и других.
29 других символов, включая исторические математические.
И другие дополнения и исправления.
>>> Полное описание этой версии
>>> Таблицы кодов символов
>>> Файлы с данными
unicode, кодировка, стандарт, язык
👉@sysadminoff
https://www.linux.org.ru/news/opensource/18380889
Состоялся выпуск 18.0 стандартов Unicode.
Всего в эту версию добавлено 13007 новых символа, включая знаки трёх письменностей:
11328 знаков малой печати (Сяочжуань).
914 знака и 51 радикал чжурчжэньского письма.
311 числовых знака протоклинописи.
Также добавлены:
3 новых символа валют: мальдивской руфии, дирхама ОАЭ и оманского риала.
9 новых эмодзи: бабочка монарх, сачок, метеор, направленный влево большой палец, трескающееся лицо, направленный вправо большой палец, маяк, солёный огурец и ластик.
50 музыкальных символа: новые варианты пауз, скрипичных ключей, знаков альтерации, тремоло, фермат и других.
29 других символов, включая исторические математические.
И другие дополнения и исправления.
>>> Полное описание этой версии
>>> Таблицы кодов символов
>>> Файлы с данными
unicode, кодировка, стандарт, язык
👉@sysadminoff
https://www.linux.org.ru/news/opensource/18380889
🔥1
Microsoft Teams will let two presenters share screens side by side
Microsoft Teams is planning a November 2026 update that will let two presenters share screens or individual windows at the same time. The side-by-side view will help meeting participants compare content without one presenter interrupting or replacing the other.
Source
👉@sysadminoff
https://4sysops.com/archives/microsoft-teams-will-let-two-presenters-share-screens-side-by-side/
Microsoft Teams is planning a November 2026 update that will let two presenters share screens or individual windows at the same time. The side-by-side view will help meeting participants compare content without one presenter interrupting or replacing the other.
Source
👉@sysadminoff
https://4sysops.com/archives/microsoft-teams-will-let-two-presenters-share-screens-side-by-side/
Tatuin v0.27.0
Tatuin (Task Aggregator TUI for N providers) — агрегатор задач с текстовым пользовательским интерфейсом (TUI), объединяющий в одном окне задачи из различных источников: Todoist, Obsidian, GitLab TODO, GitHub Issues, iCal и CalDAV. Поддерживает базовые операции над задачами — добавление, редактирование, выполнение и удаление.
Изменения в версии v0.27.0
Добавлено
Issue #359: добавлено создание задач пакетом (batch) — теперь можно создать сразу несколько задач из списка, по одной задаче на строку
Issue #365: улучшено многострочное поле редактирования текста — теперь оно полноценно поддерживает функции редактирования (перемещение курсора между строками, прокрутка и т.д.)
Issue #363: из панели информации о задаче убран идентификатор задачи, так как он не нужен пользователю
Issue #366: фильтр/статус «Uncompleted» переименован в «Todo» для большей ясности
Исправлено
Issue #482: исправлено создание daily note в Obsidian, которое было сломано после обновления плагина Local REST API
Issue #419: исправлено создание задач в Obsidian, которое было сломано после обновления плагина Local REST API
Issue #373: исправлено падение при отображении гиперссылки в описании задачи, если она не помещалась на экране
Issue #258: исправлено несколько проблем безопасности в CI/CD workflow’ах GitHub Actions (риск инъекции команд через неэкранированную подстановку входных данных)
rust, task manager, tatuin, todoist, от автора
👉@sysadminoff
https://www.linux.org.ru/news/opensource/18381241
Tatuin (Task Aggregator TUI for N providers) — агрегатор задач с текстовым пользовательским интерфейсом (TUI), объединяющий в одном окне задачи из различных источников: Todoist, Obsidian, GitLab TODO, GitHub Issues, iCal и CalDAV. Поддерживает базовые операции над задачами — добавление, редактирование, выполнение и удаление.
Изменения в версии v0.27.0
Добавлено
Issue #359: добавлено создание задач пакетом (batch) — теперь можно создать сразу несколько задач из списка, по одной задаче на строку
Issue #365: улучшено многострочное поле редактирования текста — теперь оно полноценно поддерживает функции редактирования (перемещение курсора между строками, прокрутка и т.д.)
Issue #363: из панели информации о задаче убран идентификатор задачи, так как он не нужен пользователю
Issue #366: фильтр/статус «Uncompleted» переименован в «Todo» для большей ясности
Исправлено
Issue #482: исправлено создание daily note в Obsidian, которое было сломано после обновления плагина Local REST API
Issue #419: исправлено создание задач в Obsidian, которое было сломано после обновления плагина Local REST API
Issue #373: исправлено падение при отображении гиперссылки в описании задачи, если она не помещалась на экране
Issue #258: исправлено несколько проблем безопасности в CI/CD workflow’ах GitHub Actions (риск инъекции команд через неэкранированную подстановку входных данных)
rust, task manager, tatuin, todoist, от автора
👉@sysadminoff
https://www.linux.org.ru/news/opensource/18381241
📰 Paperweight: An Open Source App to Clean Up Your Inbox and Digital Footprint
Paperweight scans your inbox locally to find mailing lists, forgotten accounts and breach risks, with bulk unsubscribe and GDPR request tools.
🔗 Source:
#opensource
👉@sysadminoff
https://feed.itsfoss.com/link/24361/17461303/paperweight
Paperweight scans your inbox locally to find mailing lists, forgotten accounts and breach risks, with bulk unsubscribe and GDPR request tools.
🔗 Source:
#opensource
👉@sysadminoff
https://feed.itsfoss.com/link/24361/17461303/paperweight
It's FOSS
Paperweight: An Open Source App to Clean Up Your Inbox and Digital Footprint
Paperweight scans your inbox locally to find mailing lists, forgotten accounts and breach risks, with bulk unsubscribe and GDPR request tools.
Overdue a password health-check? Audit your AD with Specops Password Auditor
Get a free, read-only audit tool to scan your Active Directory for password vulnerabilities and receive an easy-to-understand interactive report - your first step to stronger password security!
Source
👉@sysadminoff
https://4sysops.com/archives/overdue-a-password-health-check-audit-your-ad-with-specops-password-auditor-3/
Get a free, read-only audit tool to scan your Active Directory for password vulnerabilities and receive an easy-to-understand interactive report - your first step to stronger password security!
Source
👉@sysadminoff
https://4sysops.com/archives/overdue-a-password-health-check-audit-your-ad-with-specops-password-auditor-3/
Claude merges Cowork into chat, bringing Docs and Slides to every conversation
Anthropic is folding Claude Cowork into its standard chat interface, eliminating the need to choose where a task belongs. Claude will retain two main modes—Claude Chat and Claude Code—while Cowork’s long-running work and Claude Design, Docs, and Slides capabilities become available from regular conversations.
Source
👉@sysadminoff
https://4sysops.com/archives/claude-merges-cowork-into-chat-bringing-docs-and-slides-to-every-conversation/
Anthropic is folding Claude Cowork into its standard chat interface, eliminating the need to choose where a task belongs. Claude will retain two main modes—Claude Chat and Claude Code—while Cowork’s long-running work and Claude Design, Docs, and Slides capabilities become available from regular conversations.
Source
👉@sysadminoff
https://4sysops.com/archives/claude-merges-cowork-into-chat-bringing-docs-and-slides-to-every-conversation/
Microsoft Intune updates: Unattended Remote Help, Defender configuration, and registry inventory
Recent updates to Microsoft Intune introduce administrative capabilities designed to streamline endpoint troubleshooting, tighten endpoint security, and broaden device inventory. You can now initiate unattended Remote Help sessions on physical Windows devices, letting support staff resolve issues without requiring a signed-in user. A new Controlled Configuration mode for Microsoft Defender Antivirus establishes Intune as the authoritative policy source to prevent security configuration drift. In addition, the properties catalog now collects custom Windows registry data, while assignment filters gain general availability for numerical operating system version comparisons. This article outlines the technical prerequisites, configuration steps, and current limitations for these new features.
Source
👉@sysadminoff
https://4sysops.com/archives/microsoft-intune-updates-unattended-remote-help-defender-configuration-and-registry-inventory/
Recent updates to Microsoft Intune introduce administrative capabilities designed to streamline endpoint troubleshooting, tighten endpoint security, and broaden device inventory. You can now initiate unattended Remote Help sessions on physical Windows devices, letting support staff resolve issues without requiring a signed-in user. A new Controlled Configuration mode for Microsoft Defender Antivirus establishes Intune as the authoritative policy source to prevent security configuration drift. In addition, the properties catalog now collects custom Windows registry data, while assignment filters gain general availability for numerical operating system version comparisons. This article outlines the technical prerequisites, configuration steps, and current limitations for these new features.
Source
👉@sysadminoff
https://4sysops.com/archives/microsoft-intune-updates-unattended-remote-help-defender-configuration-and-registry-inventory/
📰 The rather good The King is Watching adds Steam Deck & gamepad support
The King is Watching from Hypnohead and tinyBuild has a major new update out with Steam Deck and gamepad support.Read the full article on GamingOnLinux.
🔗 Source: https://www.gamingonlinux.com/2026/09/the-rather-good-the-king-is-watching-adds-steam-deck-gamepad-support/
#steam
👉@sysadminoff
https://gamingonlinux.com/2026/09/the-rather-good-the-king-is-watching-adds-steam-deck-gamepad-support
The King is Watching from Hypnohead and tinyBuild has a major new update out with Steam Deck and gamepad support.Read the full article on GamingOnLinux.
🔗 Source: https://www.gamingonlinux.com/2026/09/the-rather-good-the-king-is-watching-adds-steam-deck-gamepad-support/
#steam
👉@sysadminoff
https://gamingonlinux.com/2026/09/the-rather-good-the-king-is-watching-adds-steam-deck-gamepad-support
GamingOnLinux
The rather good The King is Watching adds Steam Deck & gamepad support
The King is Watching from Hypnohead and tinyBuild has a major new update out with Steam Deck and gamepad support.
Выпуск Java SE 27 и OpenJDK 27
После шести месяцев разработки компания Oracle опубликовала платформу Java SE 27 (Java Platform, Standard Edition 27), в качестве эталонной реализации которой используется открытый проект OpenJDK. За исключением удаления некоторых устаревших возможностей в Java SE 27 сохранена обратная совместимость с прошлыми выпусками платформы Java - большинство ранее написанных Java-проектов без изменений будут работоспособны при запуске под управлением новой версии. Готовые для установки сборки Java SE 27 (JDK, JRE и Server JRE) подготовлены для Linux (x86_64, AArch64), Windows (x86_64) и macOS (x86_64, AArch64). Разработанная в рамках проекта OpenJDK эталонная реализация Java SE 27 полностью открыта под лицензией GPLv2 с исключениями GNU ClassPath, разрешающими динамическое связывание с коммерческими продуктами.
👉@sysadminoff
https://www.opennet.ru/opennews/art.shtml?num=66293
После шести месяцев разработки компания Oracle опубликовала платформу Java SE 27 (Java Platform, Standard Edition 27), в качестве эталонной реализации которой используется открытый проект OpenJDK. За исключением удаления некоторых устаревших возможностей в Java SE 27 сохранена обратная совместимость с прошлыми выпусками платформы Java - большинство ранее написанных Java-проектов без изменений будут работоспособны при запуске под управлением новой версии. Готовые для установки сборки Java SE 27 (JDK, JRE и Server JRE) подготовлены для Linux (x86_64, AArch64), Windows (x86_64) и macOS (x86_64, AArch64). Разработанная в рамках проекта OpenJDK эталонная реализация Java SE 27 полностью открыта под лицензией GPLv2 с исключениями GNU ClassPath, разрешающими динамическое связывание с коммерческими продуктами.
👉@sysadminoff
https://www.opennet.ru/opennews/art.shtml?num=66293
👏1
📰 CPython eases Rust requirements as assimilation continues
By making Rust opt-in, the Python builders hope to enjoy Rust bennies without the backlash that roiled the Linux kernel keepers.
🔗 Source: https://www.theregister.com/devops/2026/09/14/cpython-eases-rust-requirements-as-assimilation-continues/5296010
#kernel #linux #python #rust
👉@sysadminoff
https://theregister.com/devops/2026/09/14/cpython-eases-rust-requirements-as-assimilation-continues/5296010
By making Rust opt-in, the Python builders hope to enjoy Rust bennies without the backlash that roiled the Linux kernel keepers.
🔗 Source: https://www.theregister.com/devops/2026/09/14/cpython-eases-rust-requirements-as-assimilation-continues/5296010
#kernel #linux #python #rust
👉@sysadminoff
https://theregister.com/devops/2026/09/14/cpython-eases-rust-requirements-as-assimilation-continues/5296010
theregister
CPython eases Rust requirements as assimilation continues
By making Rust opt-in, the Python builders hope to enjoy Rust bennies without the backlash that roiled the Linux kernel keepers
📰 Linux 7.3-rc3 Released: "Another Fairly Large RC"
Out today is the third weekly release candidate of Linux 7.3 as this next kernel version works its way toward a stable release in the second half of October...
🔗 Source: https://www.phoronix.com/news/Linux-7.3-rc3-Released
#kernel #linux
👉@sysadminoff
https://phoronix.com/news/Linux-7.3-rc3-Released
Out today is the third weekly release candidate of Linux 7.3 as this next kernel version works its way toward a stable release in the second half of October...
🔗 Source: https://www.phoronix.com/news/Linux-7.3-rc3-Released
#kernel #linux
👉@sysadminoff
https://phoronix.com/news/Linux-7.3-rc3-Released
Phoronix
Linux 7.3-rc3 Released: "Another Fairly Large RC"
Out today is the third weekly release candidate of Linux 7.3 as this next kernel version works its way toward a stable release in the second half of October.
📰 Bazzite's September 13 update adds Strix Halo TDP controls, restores desktop TDP controls and brings fixes
The September 13th update for the popular Bazzite Linux is out now, bringing with it some excellent sounding improvements for handheld and desktop gamers.Read the full article on GamingOnLinux.
🔗 Source: https://www.gamingonlinux.com/2026/09/bazzites-september-13-update-adds-strix-halo-tdp-controls-restores-desktop-tdp-controls-and-brings-fixes/
#linux
👉@sysadminoff
https://gamingonlinux.com/2026/09/bazzites-september-13-update-adds-strix-halo-tdp-controls-restores-desktop-tdp-controls-and-brings-fixes
The September 13th update for the popular Bazzite Linux is out now, bringing with it some excellent sounding improvements for handheld and desktop gamers.Read the full article on GamingOnLinux.
🔗 Source: https://www.gamingonlinux.com/2026/09/bazzites-september-13-update-adds-strix-halo-tdp-controls-restores-desktop-tdp-controls-and-brings-fixes/
#linux
👉@sysadminoff
https://gamingonlinux.com/2026/09/bazzites-september-13-update-adds-strix-halo-tdp-controls-restores-desktop-tdp-controls-and-brings-fixes
GamingOnLinux
Bazzite's September 13 update adds Strix Halo TDP controls, restores desktop TDP controls and brings fixes
The September 13th update for the popular Bazzite Linux is out now, bringing with it some excellent sounding improvements for handheld and desktop gamers.
NVIDIA представила CUDA Rust для разработки GPU-ядер на языке Rust
Компания NVIDIA объявила о развитии инструментария CUDA Rust, позволяющего использовать язык Rust для разработки ядер, выполняемых на стороне GPU. В следующем году CUDA Rust планируют довести до уровня, пригодного для разработки рабочих проектов, аналогичного инструментариям CUDA C++ и CUDA Python.
👉@sysadminoff
https://www.opennet.ru/opennews/art.shtml?num=66295
Компания NVIDIA объявила о развитии инструментария CUDA Rust, позволяющего использовать язык Rust для разработки ядер, выполняемых на стороне GPU. В следующем году CUDA Rust планируют довести до уровня, пригодного для разработки рабочих проектов, аналогичного инструментариям CUDA C++ и CUDA Python.
👉@sysadminoff
https://www.opennet.ru/opennews/art.shtml?num=66295
Microsoft’s emergency Windows update fixes only multichannel USB audio
Microsoft’s emergency KB5129195 update only partly repairs the USB Audio Class 1.0 failures introduced by September’s Patch Tuesday release. Systems that previously lost audio or showed Code 10 errors may still be affected, while the new patch mainly restores eight-channel and 3D audio operation.
Source
👉@sysadminoff
https://4sysops.com/archives/microsofts-emergency-windows-update-fixes-only-multichannel-usb-audio/
Microsoft’s emergency KB5129195 update only partly repairs the USB Audio Class 1.0 failures introduced by September’s Patch Tuesday release. Systems that previously lost audio or showed Code 10 errors may still be affected, while the new patch mainly restores eight-channel and 3D audio operation.
Source
👉@sysadminoff
https://4sysops.com/archives/microsofts-emergency-windows-update-fixes-only-multichannel-usb-audio/