Archives For Linux Kernel

Linux Kernel

Linux Kernel 4.17 was finally announced yesterday. Linus Torvalds wrote in lkml.org:

So this last week was pretty calm, even if the pattern of most of the stuff coming in on a Friday made it feel less so as the weekend approached.

And while I would have liked even less changes, I really didn’t get the feeling that another week would help the release in any way, so here we are, with 4.17 released.

No, I didn’t call it 5.0, even though all the git object count numerology was in place for that. It will happen in the not _too_ distant future, and I’m told all the release scripts on kernel.org are ready for it, but I didn’t feel there was any real reason for it. I suspect that around 4.20 – which is I run out of fingers and toes to keep track of minor releases, and thus start getting mightily confused – I’ll switch over. That was what happened for 4.0, after all.

As for the actual changes since rc7 – the shortlog is appended – it’s mostly drivers, networking, perf tooling, and a set of nds32 fixes. With some random other stuff thrown in. Again, the shortlog is obviously only the last calm week, the overall changes since 4.16 are much too big to list in that format.

The big 4.17 stuff was mentioned in the rc1 email when the merge window closed, but I guess it’s worth repeating how 4.17 is actually a slightly smaller kernel than 4.16, thanks to the removal of a number of effectively dead architectures (blackfin, cris, frv, m32r, metag, mn10300, score, and tile). Obviously all the other changes are much more important, but it’s always nice to see spring cleaning like that.

…..

Linux Kernel 4.17 release highlights:

  • AMDGPU DC enabled by default for the new display code stack.
  • Intel Cannonlake graphics support enabled by default.
  • Improved AMDKFD support for pre-Vega discrete GPUs.
  • Clean up lots of code for obsolete CPU architectures
  • A significant power-savings improvement on some hardware
  • And many more other changes.

How to Install Linux Kernel 4.17 in Ubuntu:

A graphical tool UKUU makes it easy to install the latest Kernels in Ubuntu.

For those who don’t want to use any third-party tool, here’s how to manually download and install Kernel 4.17 in Ubuntu (tested in Ubuntu 18.04, though it should work on all current Ubuntu releases).

The mainline kernels do not include any Ubuntu-provided drivers or patches. They are not supported and are not appropriate for production use.

The mainline kernel PPA has made the new kernel binaries for Ubuntu, available for download at the link below:

Download Kernel 4.17 (.deb)

Depends on your OS type, download and install the packages in turns:

  1. linux-headers-4.17.0-xxxxxx_all.deb
  2. linux-modules-4.17.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb
  3. linux-image-xxx-4.17.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb

Select generic for common system, and lowlatency for a low latency system (e.g. for recording audio), amd64 for 64bit system, i386 for 32bit system, or armhf, arm64, etc for other OS types.

To get the Kernel 4.17 from the command console, run the commands below one by one:

For 64-bit OS:

cd /tmp/

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-headers-4.17.0-041700_4.17.0-041700.201806041953_all.deb

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-modules-4.17.0-041700-generic_4.17.0-041700.201806041953_amd64.deb

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-headers-4.17.0-041700-generic_4.17.0-041700.201806041953_amd64.deb

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-image-unsigned-4.17.0-041700-generic_4.17.0-041700.201806041953_amd64.deb

sudo dpkg -i *.deb

for 32-bit OS:

cd /tmp/

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-headers-4.17.0-041700_4.17.0-041700.201806041953_all.deb

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-modules-4.17.0-041700-generic_4.17.0-041700.201806041953_i386.deb

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-headers-4.17.0-041700-generic_4.17.0-041700.201806041953_i386.deb

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-image-4.17.0-041700-generic_4.17.0-041700.201806041953_i386.deb

sudo dpkg -i *.deb

After installed these .debs, restart and enjoy!

Uninstall Linux Kernel 4.17:

Start/restart your machine and select boot with the previous kernel in ‘Grub2 -> Advanced Option for Ubuntu’. Then use Ubuntu Tweak, or run command to remove Linux Kernel 4.17.0:

sudo dpkg --purge linux-image-unsigned-4.17.0-041700-generic linux-image-4.17.0-041700-generic

Linux Kernel

Linux Kernel 4.16 was released yesterday. Linus Torvalds announced in lkml.org:

So the take from final week of the 4.16 release looks a lot like rc7, in that about half of it is networking. If it wasn’t for that, it would all be very small and calm.

We had a number of fixes and cleanups elsewhere, but none of it made me go “uhhuh, better let this soak for another week”. And davem didn’t think the networking was a reason to delay the release, so I’m not.

End result: 4.16 is out, and the merge window for 4.17 is open and I’ll start doing pull requests tomorrow.

Outside of networking, most of the last week was various arch fixlets (powerpc, arm, x86, arm64), some driver fixes (mainly scsi and rdma) and misc other noise (documentation, vm, perf).

The appended shortlog gives an overview of the details (again, this is only the small stuff in the last week, if you want the full 4.16 changelog you’d better get the git tree and filter by your area of interest).

Linux Kernel 4.16 release highlights:

  • Spectre / Meltdown mitigation & other security updates.
  • L2 CDP support for L2 cache partitioning on Intel CPUs
  • Correct AMD Zen temperature reporting for the Ryzen Threadripper 1900X processor.
  • P-State driver support for Skylake X servers.
  • POWER memory protection keys support
  • Oracle DAX driver for SPARC co-processor
  • Jailhouse guest support for non-root users

How to Install Kernel 4.16 in Ubuntu:

Other than using a graphical tool UKUU to install the latest mainline kernel packages, following steps will tell you how to manually download and install it in all current Ubuntu releases.

The mainline kernels do not include any Ubuntu-provided drivers or patches. They are not supported and are not appropriate for production use.

The mainline kernel PPA has made the new kernel binaries for Ubuntu, available for download at the link below:

Download Kernel 4.16 (.deb)

Depends on your OS type, download and install the packages in turns:

  1. linux-headers-4.16.0-xxxxxx_all.deb
  2. linux-headers-4.16.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb
  3. linux-image-4.16.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb

Select generic for common system, and lowlatency for a low latency system (e.g. for recording audio), amd64 for 64bit system, i386 for 32bit system, or armhf, arm64, etc for other OS types.

To get the Kernel 4.16 from the command console, run the commands below one by one:

For 64-bit OS:

cd /tmp/

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-headers-4.16.0-041600_4.16.0-041600.201804012230_all.deb

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-headers-4.16.0-041600-generic_4.16.0-041600.201804012230_amd64.deb

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-image-4.16.0-041600-generic_4.16.0-041600.201804012230_amd64.deb

sudo dpkg -i *.deb

for 32-bit OS:

cd /tmp/

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-headers-4.16.0-041600_4.16.0-041600.201804012230_all.deb

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-headers-4.16.0-041600-generic_4.16.0-041600.201804012230_i386.deb

wget -c http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/linux-image-4.16.0-041600-generic_4.16.0-041600.201804012230_amd64.deb
sudo dpkg -i *.deb

After installed these .debs, restart and enjoy!

Uninstall Linux Kernel 4.16:

Start/restart your machine and select boot with the previous kernel in Grub2 -> Advanced menu. Then use Ubuntu Tweak, or other system tool to remove the Kernel 4.16, or you may see this how to remove old kernels tutorial.

Linux Kernel

After 9 release candidates, Linux Kernel 4.15 stable was finally announced earlier today. Kernel 4.15 is the first to be fully patched against the Meltdown and Spectre security vulnerabilities.

After a release cycle that was unusual in so many (bad) ways, this last week was really pleasant. Quiet and small, and no last-minutepanics, just small fixes for various issues. I never got a feeling that I’d need to extend things by yet another week, and 4.15 looks fine to me.“, Linus Torvalds announced.

What’s new in Kernel 4.15:

  • support for the RISC-V architecture
  • support for AMD Secure Encrypted Virtualization
  • support for the User-Mode Instruction Prevention feature on Intel CPUs
  • DRM leasing support for benefiting VR use-cases on Linux.
  • The HTC Vive VR headset treated “Non-Desktop”
  • Intel Coffee Lake graphics are now considered stable
  • Nouveau driver adds support for GeForce GTX 1000 “Pascal” temperature monitoring.

How to Install Kernel 4.15 in Ubuntu:

Other than using a graphical tool UKUU to install the latest mainline kernel packages, following steps will tell you how to manually download and install it in all current Ubuntu releases.

The mainline kernels do not include any Ubuntu-provided drivers or patches. They are not supported and are not appropriate for production use.

The mainline kernel PPA has made the new kernel binaries for Ubuntu, available for download at the link below:

Download Kernel 4.15 (.deb)

Depends on your OS type, download and install the packages in turns:

  1. linux-headers-4.15.0-xxxxxx_all.deb
  2. linux-headers-4.15.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb
  3. linux-image-4.15.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb

Select generic for common system, and lowlatency for a low latency system (e.g. for recording audio), amd64 for 64bit system, i386 for 32bit system, or armhf, arm64, etc for other OS types.

To get the Kernel 4.15 from the command console, run the commands below one by one:

For 64-bit OS:

cd /tmp/

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/linux-headers-4.15.0-041500_4.15.0-041500.201801282230_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/linux-headers-4.15.0-041500-generic_4.15.0-041500.201801282230_amd64.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/linux-image-4.15.0-041500-generic_4.15.0-041500.201801282230_amd64.deb

sudo dpkg -i *.deb

for 32-bit OS:

cd /tmp/

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/linux-headers-4.15.0-041500_4.15.0-041500.201801282230_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/linux-headers-4.15.0-041500-generic_4.15.0-041500.201801282230_i386.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15/linux-image-4.15.0-041500-generic_4.15.0-041500.201801282230_i386.deb

sudo dpkg -i *.deb

After installed these .debs, restart and enjoy!

Uninstall Linux Kernel 4.15:

Start/restart your machine and select boot with the previous kernel in Grub2 -> Advanced menu. Then use Ubuntu Tweak, or other system tool to remove the Kernel 4.15, or you may see this how to remove old kernels tutorial.

Linux Kernel

The 4.12 Linux Kernel was finally released earlier today. Linus Torvalds announced in lkml.org:

Things were quite calm this week, so I really didn’t have any real reason to delay the 4.12 release.

As mentioned over the various rc announcements, 4.12 is one of the bigger releases historically, and I think only 4.9 ends up having had more commits. And 4.9 was big at least partly because Greg announced it was an LTS kernel. But 4.12 is just plain big.

There’s also nothing particularly odd going on in the tree – it’s all just normal development, just more of it that usual. The shortlog below is obviously just the minor changes since rc7 – the whole 4.12 shortlog is much too large to post.

In the diff department, 4.12 is also very big, although the reason there isn’t just that there’s a lot of development, we have the added bulk of a lot of new header files for the AMD Vega support. That’s almost exactly half the bulk of the patch, in fact, and partly as a result of that the driver side dominates everything else at 85+% of the release patch (it’s not all the AMD Vega headers – the Intel IPU driver in staging is big too, for example).

But aside from just being large, and a blip in size around rc5, the rc’s stabilized pretty nicely, so I think we’re all good to go.

Go out and use it.

Kernel 4.12 top features:

  • initial GeForce GTX 1000 series 3D accelerated support on Nouveau driver stack
  • Intel’s DRM driver has turned on atomic mode-setting by default
  • Initial Radeon RX Vega support on AMDGPU DRM driver
  • A USB Type-C port manager
  • KASLR enabled by default for x86 systems.
  • BFQ and Kyber now mainline as two new I/O schedulers.
  • Continued power management tuning.

How to Install Kernel 4.12 in Ubuntu / Linux Mint:

The mainline kernels do not include any Ubuntu-provided drivers or patches. They are not supported and are not appropriate for production use.

The mainline kernel PPA has made the binaries for the new kernel release, available for download at the link below:

Download Kernel 4.12 (.deb)

Depends on your OS type, download and install the packages in turns:

  1. linux-headers-4.12.0-xxxxxx_all.deb
  2. linux-headers-4.12.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb
  3. linux-image-4.12.0-xxx-generic(/lowlatency)_xxx_amd64(/i386).deb

Select generic for common system, and lowlatency for a low latency system (e.g. for recording audio), amd64 for 64bit system, i386 for 32bit system, or armhf, arm64, etc for other OS types.

To get the Kernel 4.12 from the command console, run the commands below one by one:

For 64-bit OS:

cd /tmp/

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12/linux-headers-4.12.0-041200_4.12.0-041200.201707022031_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12/linux-headers-4.12.0-041200-generic_4.12.0-041200.201707022031_amd64.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12/linux-image-4.12.0-041200-generic_4.12.0-041200.201707022031_amd64.deb

sudo dpkg -i *.deb

for 32-bit OS:

cd /tmp/

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12/linux-headers-4.12.0-041200_4.12.0-041200.201707022031_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12/linux-headers-4.12.0-041200-generic_4.12.0-041200.201707022031_i386.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.12/linux-image-4.12.0-041200-generic_4.12.0-041200.201707022031_i386.deb

sudo dpkg -i *.deb

After installed these .debs, restart and enjoy!

Uninstall Linux Kernel 4.12:

Start/restart your machine and select boot with the previous kernel in Grub2 -> Advanced menu. Then use Ubuntu Tweak, or other system tool to remove the Kernel 4.12, or you may see this how to remove old kernels tutorial.

Linux Kernel

Linux 4.11 Kernel was officially released on April 30th. Linus Torvalds announced in lkml.org:

So after that extra week with an rc8, things were pretty calm, and I’m much happier releasing a final 4.11 now.

We still had various smaller fixes the last week, but nothing that made me go “hmm..”. Shortlog appended for people who want to peruse the details, but it’s a mix all over, with about half being drivers (networking dominates, but some sound fixlets too), with the rest being soem arch updates, generic networking, and filesystem (nfs[d]) fixes. But it’s all really small, which is what I like to see the last week of the release cycle.

Linux 4.11 Kernel release highlights:

  • Enable frame-buffer compression by default for Skylake device and newer.
  • Adds DP MST audio support in Intel’s DRM driver.
  • Initial Geminilake graphics support.
  • ASPEED AST2500 display support.
  • Better Turbo Boost Max 3.0 support.
  • New ARM SoCs and boards support.
  • Realtek ALC1220 is now supported
  • Radeon/AMDGPU and various other DRM driver updates.
  • Improvements and updates to KVM, Xen, TurboStat, Raspberry Pi, TPM2, and more.

How to Install Kernel 4.11 in Ubuntu:

The mainline kernel PPA built the Linux 4.11 build .deb packages a few days later, available for download at the link below:

The mainline kernels do not include any Ubuntu-provided drivers or patches. They are not supported and are not appropriate for production use.

Download Linux 4.11 Kernel (.deb)

You can also use UKUU, a simple graphical tool to install latest Linux Kernels in Ubuntu.

To get Linux 4.11 Kernel from command console, run following commands one by one:

for 64-bit system:

cd /tmp/

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11/linux-headers-4.11.0-041100_4.11.0-041100.201705041534_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11/linux-headers-4.11.0-041100-generic_4.11.0-041100.201705041534_amd64.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11/linux-image-4.11.0-041100-generic_4.11.0-041100.201705041534_amd64.deb

sudo dpkg -i *.deb

for 32-bit system:

cd /tmp/

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11/linux-headers-4.11.0-041100_4.11.0-041100.201705041534_all.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11/linux-headers-4.11.0-041100-generic_4.11.0-041100.201705041534_i386.deb

wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11/linux-image-4.11.0-041100-generic_4.11.0-041100.201705041534_i386.deb

sudo dpkg -i *.deb

After installed these debs, restart and enjoy!

Uninstall:

To remove Linux Kernel 4.11, first restart and select boot with previous kernel (from Grub boot-loader -> Advanced Options) and then run command:

sudo apt-get remove linux-headers-4.11* linux-image-4.11*