Linux 内核 6.5 发布，首次支持 Wi-Fi 7 和 USB4
内核
![](/data/attachment/album/202308/30/101320xa6q3ipt6quuk4ud.png)



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> Linux 内核 6.5 进行了一系列的改善，阅读此文以了解详情。
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新版的 Linux 内核已经发布！


**Linux 6.5 内核** 已经推出，此次更新在 Linux 6.4 内核的基础上进行了进一步的开发，带来了值得注意的改变和新特性。


Linus Torvalds 表示，这是一次相对顺畅的发布：



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> 上周并没有发生任何异常或惊人的事情，因此没有理由延迟 6.5 版的发布。
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> 我仍有这样一个担忧，似乎是因为许多人都在度假，部分导致整体状态比较平静。但目前这次发布进展顺利，所以这可能只是我多虑了。上周的最大更新就仅仅是对我们自我测试的几次修订。
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### ? Linux 内核 6.5：新增了哪些功能？


需要说明的是，这次发布的版本不是长期支持（LTS）版本。如果你期望使用最新的功能，那么这个版本就是为你准备的。否则，除非此版本解决了你关心的特定问题或者能有效提升性能，否则没有升级的必要。


以下是新版内核发布的主要亮点：


* AMD FreeSync 视频的即插即用支持
* AMD CPU 默认启用 P-State 主动模式
* 对 USB4 v2 和 WiFi 7 的初步支持
* ASUS ROG Ally 音效优化


### 开箱即用的 AMD FreeSync 视频支持


![](/data/attachment/album/202308/30/101320thcu8yy9z7894chh.png)


在这次发布中，重新引入的一项优秀功能是默认开启的 AMD FreeSync 视频模式支持。此特性在 Linux 内核 5.8 版本中首次引入，后因错误而被回滚。


启用 AMD FreeSync 模式后，通过将显示器的刷新率与显卡的帧率相匹配，可以显著减少游戏及视频中的屏幕撕裂和迟滞现象。


用技术词汇来描述，当它在 Linux 内核 5.8 版本中首次发布时，它的描述是：



> 
> 这个补丁集启用了 FreeSync 视频模式的使用场景，这样用户空间可以请求一个 FreeSync 兼容的视频模式，因此，切换到此模式不会触发屏幕黑屏。
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这对内容创作者和游戏玩家都非常有用。


但请注意，你需要一个兼容 FreeSync 的显示器和显卡才能充分利用它。


### AMD CPU 默认启用 P-State 主动模式


现代 AMD CPU，特别是那些基于 Zen 2 及更新架构构建的，将默认采用 amd-pstate 作为 CPU 性能调整驱动。之前，CPU 的频率调整机制默认由 CPUFreq 负责。


现在，amd-pstate 提供了三种模式：主动、被动和引导式自主模式。在这次发布中，默认启用了主动模式，从而取代了之前 Linux 内核 6.4 版本中使用的引导式自主模式。


据 Phoronix 的一些 [基准测试](https://www.phoronix.com/review/amd-pstate-epp-ryzen-mobile) 结果显示，发现 amd-pstate 的性能优于 CPUFreq。


你可以参考这个 [提交](https://lore.kernel.org/lkml/CAJZ5v0iQk8ytZ0953_HCWU6Vr62J9UeC8Z9pirOHAfjpbvcOfg@mail.gmail.com/) 了解更多详情。


### ASUS ROG Ally 声音优化


![](/data/attachment/album/202308/30/101321r4xfo013u1i47o79.png)


ASUS ROG Ally 是一款使用 AMD Z1 和 Z1 Extreme SoCs 驱动的 Windows 手持式游戏电脑，直接竞争的对手是非常知名的 Steam Deck。它在今年七月发布。


使用 Linux 的游戏玩家如果拥有 ASUS ROG Ally，可以期待看到一个针对系统音频设备的修补发布，感谢这个 [提交](https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?h=for-next&id=724418b84e6248cd27599607b7e5fac365b8e3f5)。


### 对 USB4 v2 & WiFi 7 的初始支持


![](/data/attachment/album/202308/30/101321bj4pepb6z3ezp6je.png)


下一代无线标准 - WiFi 7 - 的开发工作已经进行了一段时间。WiFi 7 支持 6Ghz 频段，最大数据传输速率达到 23 Gbps！


与此同时，下一代 USB4 标准的开发工作也已开始。USB4 支持 80 Gbps 的数据传输速率！


通过对 WiFi 的这个 [合并](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3a8a670eeeaa40d87bd38a587438952741980c18) 和对 WiFi 7 的 [拉取请求](https://lore.kernel.org/lkml/ZKKejqr0Db74u8TB@kroah.com/)，对二者的早期支持已经被嵌入到 Linux 6.5 内核中。


### ?️ 其他改动与提升


除了主要的亮点外，还有一些值得一提的更新：


* 对英特尔 P-State 的 CPU 进行了缩放修复
* 对 Btrfs 的性能进行了改进，以及其他存储优化
* 对最新的 Xbox 控制器增加了 Rumble 支持
* 对 AMD Radeon RX 7000 系列显卡进行了超频支持
* 对 AMD 和英特尔图形驱动进行了各种优化和改进
* 和以往一样，更多的 Rust 代码转换


[官方发布公告](https://lore.kernel.org/lkml/CAHk-=wgmKhCrdrOCjp=5v9NO6C=PJ8ZTZcCXj09piHzsZ7qqmw@mail.gmail.com/) 将给出自从上一个候选版释放以后的摘要。如果你对技术细节有兴趣，不妨参考 [变更日志](https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5)。


### 安装 Linux 内核 6.5


如果你使用像 Arch 这样的滚动更新发行版，可以很容易地升级至 Linux 内核 6.5。在新版本发布后的一段时间，这些发行版本会提供最新的内核。


另一方面，使用 Ubuntu 及其衍生版本的用户，可以期待在 Ubuntu 23.10 版本中看到这次的 Linux 内核发布。如果你使用的是像 Pop OS 和 Linux Lite 这样的发行版，可能会更早的见到这版内核发布。


但是如果你希望在基于 Ubuntu 的系统里快速尝试，可以按照我们的指南进行（请注意，这是自行承担风险！?）。


你可以在它的 [官方网站](https://www.kernel.org/) 上下载最新的 Linux 内核 的 Tarball（*发布之后可能需要一段时间才能下载到*）。


? 欢迎在评论区分享你对最新内核发布的看法。




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via: <https://news.itsfoss.com/linux-kernel-6-5-release/>


作者：[Rishabh Moharir](https://news.itsfoss.com/author/rishabh/) 选题：[lujun9972](https://github.com/lujun9972) 译者：ChatGPT 校对：[wxy](https://github.com/wxy)


本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出


OK
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It's a new Linux kernel release time!

**Linux 6.5 kernel **is here and builds upon the work of the previous Linux 6.4 kernel, along with some notable changes and additions.

Linus Torvalds mentioned that this was a smooth release overall:

So nothing particularly odd or scary happened this last week, so there is no excuse to delay the 6.5 release.

I still have this nagging feeling that a lot of people are on vacation and that things have been quiet partly due to that. But this release has been going smoothly, so that's probably just me being paranoid. The biggest patches this last week were literally just to our selftests.

**Suggested Read **📖

[Linux Kernel 6.4 Released: Embracing Apple M2, New Hardware, and More Rust CodeIt’s a new Linux Kernel release day! Hardware enthusiast? Dive in to learn more what Linux Kernel 6.4 brings in.](https://news.itsfoss.com/linux-kernel-6-4/)![](https://news.itsfoss.com/content/images/2023/06/linux-kernel-6-4-release.jpg)


![](https://news.itsfoss.com/content/images/2023/06/linux-kernel-6-4-release.jpg)

## 🆕 Linux Kernel 6.5: What's New?

Users should be aware that this is a non-LTS release. If you want to get your hands on the latest features, this release is for you. Otherwise, upgrading is unnecessary unless it fixes particular issues or improves performance.

Here are the major highlights of the new kernel release:

**Out-of-the-box Support for AMD FreeSync Video****Default P-State "Active" Mode for AMD CPUs****Initial Support for USB4 v2 & WiFi 7****ASUS ROG Ally Sound Optimizations**

### Out-of-the-box Support for AMD FreeSync Video

![amd freesync video](https://news.itsfoss.com/content/images/2023/08/linux-kernel-6-5-amd.png)

A neat feature re-introduced in this release is the support for AMD FreeSync Video mode enabled by default. It was earlier introduced in the Linux Kernel 5.8 but reverted due to bugs.

When AMD FreeSync mode is enabled, screen-tearing and stuttering in games and videos are heavily reduced by matching the monitor's refresh rate to the framerate of the graphics card.

In technical terms, here's how it was described when it was being released back in Linux 5.8 kernel:

This patchset enables freesync video mode usecase where the userspace can request a freesync compatible video mode such that switching to this mode does not trigger blanking.

This is quite useful for content creators and gamers alike.

But note that you will need a FreeSync-compatible monitor and graphics card to utilize it.

### Default P-State "Active "Mode for AMD CPUs

Modern AMD CPUs, specifically those built with Zen 2 and above architecture, will now use amd-pstate as the default CPU performance scaling driver. Earlier, the CPU scaling mechanism was managed by CPUFreq by default.

Now, amd-pstate offers three modes: active, passive, and guided autonomous. The "active" mode has been enabled by default in this release and thus replaces the guided autonomous mode used in the previous Linux Kernel 6.4.

It has been found that amd-pstate performs better than CPUFreq, as seen in some [benchmarks](https://www.phoronix.com/review/amd-pstate-epp-ryzen-mobile?ref=news.itsfoss.com) by Phoronix.

You can refer to this [commit](https://lore.kernel.org/lkml/CAJZ5v0iQk8ytZ0953_HCWU6Vr62J9UeC8Z9pirOHAfjpbvcOfg@mail.gmail.com/?ref=news.itsfoss.com) to learn more.

### ASUS ROG Ally Sound Optimizations

![asus rog sound](https://news.itsfoss.com/content/images/2023/08/linux-kernel-6-5-handheld.png)

A direct competitor to the vastly famous Steam Deck, ASUS ROG Ally is a Windows handheld gaming computer powered by the AMD Z1 and Z1 Extreme SoCs. It was released back in July of this year.

Linux gamers owning an ASUS ROG Ally should expect to see a patch release for the system's audio device, thanks to this [commit](https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?h=for-next&id=724418b84e6248cd27599607b7e5fac365b8e3f5&ref=news.itsfoss.com).

### Initial Support for USB4 v2 & WiFi 7

![](https://news.itsfoss.com/content/images/2023/08/linux-kernel-6-5-wifi.png)

Work for the next-generation wireless standard - WiFi 7 - has been in development for quite some time. As a quick fact, WiFi 7 supports the 6Ghz band with a max data rate of 23 Gbps!

Also along this line, development work for the next-generation USB4 standard has begun. USB4 supports an 80 Gbps data transfer rate!

Early support for both has been baked into the Linux 6.5 kernel via this [merge](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3a8a670eeeaa40d87bd38a587438952741980c18&ref=news.itsfoss.com) for WiFi and [pull request](https://lore.kernel.org/lkml/ZKKejqr0Db74u8TB@kroah.com/?ref=news.itsfoss.com) for WiFi 7.

### 🛠️ Other Changes & Improvements

Here are some more things to be mentioned apart from the major highlights:

- CPU scaling fixes for Intel P-State
- Performance improvements for Btrfs and other storage optimizations
- Rumble support for the latest Xbox controllers
- Overclocking support for AMD Radeon RX 7000 series graphics cards
- Various improvements and optimizations for AMD and Intel graphics drivers
- And as always, more Rust code transitions

The [official release announcement](https://lore.kernel.org/lkml/CAHk-=wgmKhCrdrOCjp=5v9NO6C=PJ8ZTZcCXj09piHzsZ7qqmw@mail.gmail.com/?ref=news.itsfoss.com) would give you a short log since its last release candidate. And, if you are curious about technical details, refer to the [changelog](https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5?ref=news.itsfoss.com).

## Installing Linux Kernel 6.5

You can easily upgrade to Linux Kernel 6.5 using a rolling-release distro like Arch or Fedora. These distros offer the latest kernel sometime after the release.

On the other hand, folks using Ubuntu and its derivates should expect to see this Linux Kernel release in action via Ubuntu 23.10. You can expect this kernel release sooner using distros like Pop OS and Linux Lite.

But if you want to try it out quickly on an Ubuntu-based system, you can do so by following our guide (at your own risk! 👀)

[Install the Latest Mainline Linux Kernel Version in UbuntuThis article shows you how to upgrade to the latest Linux kernel in Ubuntu. There are two methods discussed. One is manually installing a new kernel and the other uses a GUI tool providing even easier way.](https://itsfoss.com/upgrade-linux-kernel-ubuntu/?ref=news.itsfoss.com)![](https://itsfoss.com/content/images/2023/04/install-mainline-kernel-in-ubuntu.png)


![](https://itsfoss.com/content/images/2023/04/install-mainline-kernel-in-ubuntu.png)

You can download the tarball for the latest Linux Kernel from its [official website](https://www.kernel.org/?ref=news.itsfoss.com) (*it takes time for it to be available after release*).

*💬 Share your thoughts about the latest kernel release in the comments.*

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