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90 lines
3.9 KiB
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90 lines
3.9 KiB
Markdown
translation by strugglingyouth
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How to Install / Upgrade to Linux Kernel 4.2 in Ubuntu
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================================================================================
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Linux Kernel 4.2 was released yesterday, at noon. Linus Torvalds wrote on [lkml.org][1]:
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> So judging by how little happened this week, it wouldn’t have been a mistake to release 4.2 last week after all, but hey, there’s certainly a few fixes here, and it’s not like delaying 4.2 for a week should have caused any problems either.
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>
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> So here it is, and the merge window for 4.3 is now open. I already have a few pending early pull requests, but as usual I’ll start processing them tomorrow and give the release some time to actually sit.
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>
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> The shortlog from rc8 is tiny, and appended. The patch is pretty tiny too…
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### What’s New in Kernel 4.2: ###
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- rewrites of Intel Assembly x86 code
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- support for new ARM boards and SoCs
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- F2FS per-file encryption
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- The AMDGPU kernel DRM driver
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- VCE1 video encode support for the Radeon DRM driver
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- Initial support for Intel Broxton Atom SoCs
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- Support for ARCv2 and HS38 CPU cores.
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- added queue spinlocks support
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- many other improvements and updated drivers.
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### How to Install Kernel 4.2 in Ubuntu: ###
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The binary packages of this kernel release are available for download at link below:
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- [Download Kernel 4.2 (.DEB)][1]
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First check out your OS type, 32-bit (i386) or 64-bit (amd64), then download and install the packages below in turn:
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1. linux-headers-4.2.0-xxx_all.deb
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1. linux-headers-4.2.0-xxx-generic_xxx_i386/amd64.deb
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1. linux-image-4.2.0-xxx-generic_xxx_i386/amd64.deb
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After installing the kernel, you may run `sudo update-grub` command in terminal (Ctrl+Alt+T) to refresh grub boot-loader.
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If you need a low latency system (e.g. for recording audio) then download & install below packages instead:
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1. linux-headers-4.2.0_xxx_all.deb
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1. linux-headers-4.2.0-xxx-lowlatency_xxx_i386/amd64.deb
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1. linux-image-4.2.0-xxx-lowlatency_xxx_i386/amd64.deb
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For Ubuntu Server without a graphical UI, you may run below commands one by one to grab packages via wget and install them via dpkg:
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For 64-bit system run:
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cd /tmp/
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wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-unstable/linux-headers-4.2.0-040200_4.2.0-040200.201508301530_all.deb
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wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-unstable/linux-headers-4.2.0-040200-generic_4.2.0-040200.201508301530_amd64.deb
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wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-unstable/linux-image-4.2.0-040200-generic_4.2.0-040200.201508301530_amd64.deb
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sudo dpkg -i linux-headers-4.2.0-*.deb linux-image-4.2.0-*.deb
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For 32-bit system, run:
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cd /tmp/
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wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-unstable/linux-headers-4.2.0-040200_4.2.0-040200.201508301530_all.deb
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wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-unstable/linux-headers-4.2.0-040200-generic_4.2.0-040200.201508301530_i386.deb
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wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-unstable/linux-image-4.2.0-040200-generic_4.2.0-040200.201508301530_i386.deb
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sudo dpkg -i linux-headers-4.2.0-*.deb linux-image-4.2.0-*.deb
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Finally restart your computer to take effect.
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To revert back, remove old kernels, see [install kernel simply via a script][3].
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--------------------------------------------------------------------------------
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via: http://ubuntuhandbook.org/index.php/2015/08/upgrade-kernel-4-2-ubuntu/
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作者：[Ji m][a]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://ubuntuhandbook.org/index.php/about/
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[1]:https://lkml.org/lkml/2015/8/30/96
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[2]:http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-unstable/
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[3]:http://ubuntuhandbook.org/index.php/2015/08/install-latest-kernel-script/
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