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Linux Kernel 3.12 出来后我就一直跃跃欲试，无奈安装后无法启动图形界面，原因在自己的小破PC的NVIDIA显卡使用其私有驱动，安装时build失败。公司里的电脑没有私有显卡驱动，倒是一个多星期前就装上了。以上是废话。11月6日更新的NVIDIA显示驱动331.20终于支持3.12内核了，当然，3.11应该也不在话下。使用3.12后，最明显的感觉就是电脑快了一些。当然，也有可能是我的心理作用。Linux Kernel 的详细介绍：请点这里
Linux Kernel 的下载地址：请点这里相关阅读：Linux内核将用nftables替代iptables http://www.linuxidc.com/Linux/2013-10/91727.htmLinux 3.12代号Suicidal Squirrel http://www.linuxidc.com/Linux/2013-09/90023.htm怎样在 Ubuntu 上安装 Linux 3.11 内核 http://www.linuxidc.com/Linux/2013-09/89674.htmUbuntu 13.10 （Saucy Salamander） 内核已升级至 Linux Kernel 3.10 RC5 http://www.linuxidc.com/Linux/2013-06/86110.htmLinux Kernel 3.4.62 LTS 现已经提供下载 http://www.linuxidc.com/Linux/2013-09/90368.htm如果你也想装上试试，请参考下面的英文。

Linux Kernel 3.12 Released, Install it in Ubuntu & Linux Mint

Linus Torvalds finally announced Linux Kernel 3.12. Here’re the new features and how to install / upgrade to Kernel 3.12 in Ubuntu 13.10, Ubuntu 12.04, Ubuntu 12.10 and Linux Mint.Linus Torvalds wrote on the mailing list （read the announcement）:
I was vacillating whether to do an rc8 or just cut the final 3.12, but
since the biggest reason to *not* do a final release was not so much
the state of the code, as simply the fact that I’ll be traveling with
very bad internet connection next week, I didn’t really want to delay
the release. Sure, we had a number of driver reverts, and there was an
annoying auto-NUMA memory corruption fix series, but none of it was
really worth delaying 3.12 for.But the fact that I’m going to be （effectively） off-line next week
means that I’m *not* opening the merge window for 3.13 yet ……

What’s New in Linux Kernel 3.12:

  • The Radeon open-source kernel graphics driver has improved Dynamic Power Management, but it won’t be until Linux 3.13 where Radeon DPM is enabled by default along with HDMI audio.
  • A brand new DRM/KMS driver in the form of the Snapdragon MSM driver written by Rob Clark to go along with his reverse-engineered Freedreno driver for Qualcomm Snapdragon/Adreno graphics.
  • Run-time GPU power management so NVIDIA Optimus systems can dynamically power on/off the secondary GPU.
  • Experimental DRM render nodes support done by David Herrmann over the summer.
  • AMD Berlin APU support as the first APU built upon AMD’s Heterogeneous System Architecture （HSA）.
  • The EXT4 file-system now supports aggressive extent caching and better recovery capabilities.
  • Random F2FS, XFS, and Btrfs file-system improvements. This kernel does deliver on disk improvements.
  • zRAM has been promoted out of the staging area of the kernel. ZRAM supports a compressed block device in RAM to avoid paging to disk and is mostly of benefit for systems with limited amounts of system memory.
  • Various staging driver updates and sound driver work and other glorious work.

    Install / Upgrade Linux Kernel 3.12

    The DEBs for Linux Kernel 3.12 has been made into kernel-ppa. Press Ctrl+Alt+T on keyboard to open terminal and follow the steps below to download and install them.1. Download DEBs for this kernel:For 32-bit Ubuntu, Linux Mint and alternatives run commands below one by one:wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/linux-headers-3.12.0-031200-generic_3.12.0-031200.201311031935_i386.debwget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/linux-headers-3.12.0-031200_3.12.0-031200.201311031935_all.debwget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/linux-image-3.12.0-031200-generic_3.12.0-031200.201311031935_i386.debFor 64-bit Ubuntu, Linux Mint and alternatives run commands below one by one:wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/linux-headers-3.12.0-031200-generic_3.12.0-031200.201311031935_amd64.debwget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/linux-headers-3.12.0-031200_3.12.0-031200.201311031935_all.debwget http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-saucy/linux-image-3.12.0-031200-generic_3.12.0-031200.201311031935_amd64.deb2. For both 32-bit & 64-bit install the Kernel via:sudo dpkg -i linux-headers-3.12.0-*.deb linux-image-3.12.0-*.debOnce installed, restart your computer and done.If for some reason the new kernel does not work properly, run command below to remove Linux Kernel 3.12:sudo apt-get purge linux-image-3.12.0-* linux-headers-3.12.0-*
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