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Linux Kernel News Archives

GPU Switching Goes For The Gold: Mainline Inclusion

At the start of the month we talked about GPU switching coming to Linux in a crude form that allowed notebooks with dual GPUs (one being a low-power, low-performance integrated chip and the other being the more performance-oriented GPU that's power hungry) to be switched from without the need for a reboot in Linux. This initial work was just a collection of hacks by David Airlie and it required VT switching after killing the X Server, etc. It also didn't power down the unused GPU. However, as the days passed, this code did more and delayed GPU switching came too.
26 February 2010 - David Airlie Hacks Away - 8 Comments

Linux 2.6.33 Kernel Released, Woohoo!

Now that Linus Torvalds is done rewiring part of his house, he has put out the Linux 2.6.33 kernel release. This update to the Linux kernel that's coming three months after the release of Linux 2.6.32 delivers the Nouveau DRM GPU code in the staging area, many Radeon KMS improvements and it has left the staging area, the new VMware DRM, and much more.
24 February 2010 - New Kernel Release - 27 Comments

Linux 2.6.33-rc8 Kernel Hopefully The Last

Linus Torvalds has put out the eighth release candidate for the Linux 2.6.33 kernel and it will hopefully serve as the last test build before an official release is made. The Linux 2.6.33-rc8 kernel consists of bug-fixes and resolution of regressions introduced earlier into this kernel development cycle the past few months. Worth noting is that there are also more kernel mode-setting / DRM changes that worked its way in at the last minute.
13 February 2010 - Test Away

Linux 2.6.33-rc7 Released, Still Many Regressions

Linus pushed out the Linux 2.6.33-rc7 kernel yesterday afternoon, but still even being seven release candidates into the Linux 2.6.33 kernel cycle, at least one more test release is due before we may see an official release. The number of regressions for the Linux 2.6.33 kernel is still high and is somthing that isn't pleasing Torvalds.
7 February 2010 - New RC - 11 Comments

Today, Delayed GPU Switching Comes To Linux

Two days ago we reported on hybrid graphics coming to Linux in a crude form that allowed switching between graphics processors on notebook computers that utilize dual graphics processors, one that's meant to deliver the best energy efficient performance while the other GPU is for maximizing the graphics performance in demanding environments. Just 24 hours after this kernel patch hit the Internet it already went through four revisions by Red Hat's David Airlie, which delivered better switching and greater notebook compatibility. Since yesterday this patch has already undergone a few more revisions.
3 February 2010 - Hybrid Graphics Work Continues - 24 Comments

A Day Later, Hybrid Graphics On Linux Does More

Just yesterday morning we reported on hybrid graphics coming to Linux in a crude form, which allowed dual-GPU notebook systems to switch between the onboard GPUs via a kernel patch but what made it crude was that it wasn't seamless switching within the running X.Org Server (it won't be this way for some time) and it didn't actually turn off the other GPU when the other one was in use. In the past 24 hours, however, David Airlie has published three new versions of this Linux kernel patch.
2 February 2010 - Kill Some Power - 11 Comments

EXT4 Lets Us Down, There Goes Our R600/700 Mesa Tests

For the past several days benchmarks have been going on a plethora of ATI Radeon HD 2000/3000/4000 (R600/700 generation) graphics cards as well as some of the older Radeon X1000 (R500) hardware for reference. All of this testing has been done with the current open-source ATI driver stack with Mesa to show where the performance is at for the H1'2010 Linux distributions. At our disposal is quite a collection of graphics cards, but to much dismay this article has been postponed as the testing process had to be restarted from scratch.
1 February 2010 - EXT4 Is Unreliable - 66 Comments

Hybrid Graphics Comes To Linux In Crude Form

While the support for graphics processors on Linux in the free software stack has improved a lot over Linux, there still are entire areas of support missing, such as with supporting NVIDIA's SLI or AMD's CrossFire technologies. Additionally, NVIDIA and AMD as well as Intel have been plopping dual GPUs into notebooks. This is not to split the rendering workload, but rather to allow one lower-powered GPU to be utilized when not in engaging in any vigorous tasks and then another performance-oriented GPU to be utilized when such speed is needed. This solution basically provides the best of both words of having maximum battery life but fast performance when needed. However, Linux has not supported this hybrid / switchable graphics technology at all.
1 February 2010 - Kernel Hacks - 9 Comments

Linux 2.6.33-rc6 Kernel For The Weekend

Linus has put out the Linux 2.6.33-rc6 kernel release. This release candidate for the Linux 2.6.33 kernel is on time arriving precisely one week after the Linux 2.6.33-rc5 release.
29 January 2010 - Friday Afternoon Release - 5 Comments

Linux 2.6.33-rc5 Kernel Released w/ Mantis Driver

The latest release candidate for Linux 2.6.33 kernel is now available and that's Linux 2.6.33-rc5. The Linux 2.6.33-rc5 kernel delivers on eDP (embedded Display Port) support for Intel's DRM/KMS driver (the open-source ATI stack also has eDP) and the DVB "Mantis" driver has moved forward in the mainline kernel. The Mantis chipset that has been around for a while is popular on many DVB boards, but now it's supported in the mainline Linux 2.6.33 kernel.
22 January 2010 - New Kernel Build - 2 Comments

Linux 2.6.32 Kernel To Be Maintained Longer

With Ubuntu 10.04 basing off the Linux 2.6.32 kernel and this distribution release being a Long-Term Support (LTS) release that will be maintained longer than normal Ubuntu releases -- and other vendors using the Linux 2.6.32 kernel for their enterprise updates too -- this kernel will live on longer as well.
19 January 2010 - Long-Term Stable Release - 27 Comments

Linux 2.6.33-rc4 Kernel: 40% DRM Changes

One week after pushing out the third release candidate for the Linux 2.6.33 kernel, Linus Torvalds has issued the fourth release candidate. In his mailing list announcement, Linus characterizes the Linux 2.6.33-rc4 kernel as being an "odd release" as a bulk of the changes "all pretty unusual." What got changed? Well, lots of new Direct Rendering Manager (DRM) code ended up getting pulled.
13 January 2010 - Many DRM Updates - 18 Comments

Linux 2.6.33-rc3 Kernel Released

As the first post-holiday kernel update, Linus Torvalds has put out the Linux 2.6.33-rc3 kernel release. This new release candidate for the Linux 2.6.33 kernel brings in some EXT4 file-system updates, switching the recommended IEEE-1394 Firewire stack to the new stack, various driver updates, and much more.
6 January 2010 - New Devel Update - 6 Comments

Linux 2.6.33-rc2 Kernel Released

As a Christmas (or holiday) gift to all Linux users, Linus Torvalds last night put out the Linux 2.6.33-rc2 kernel release. This is the second release candidate since the closing of the Linux 2.6.33 kernel merge window, that brought the long-awaited Nouveau driver, many other graphics improvements, and other exciting changes.
25 December 2009 - Brings More Code - 5 Comments

Linux 2.6.33-rc1 Kernel Released

Linus Torvalds has just announced that the merge window for the Linux 2.6.33 kernel has closed and as a result he has pushed out Linux 2.6.33-rc1. The first release candidate for Linux 2.6.33 delivers on a plethora of new code, including the long-awaited Nouveau driver (which Linus mentions in the 2.6.33-rc1 announcement) and many graphics DRM improvements. Among the DRM changes to be delivered by the Linux 2.6.33 kernel include Radeon HDMI audio, R600/700 IRQ support, the KMS page-flipping ioctl, VMware's new driver, Intel driver improvements, and many core enhancements to the Direct Rendering Manager.
17 December 2009 - Hoorah! - 30 Comments

Radeon HDMI Audio Set For Linux 2.6.33 Kernel

The Direct Rendering Manager code in the Linux 2.6.33 kernel has received many improvements including the KMS page-flipping ioctl, DisplayPort monitor support for ATI KMS, R600/700 interrupts support, support for unreleased Intel IGPs, and many other changes. Coming after this initial pull request was also the Nouveau DRM driver and VMware's vmwgfx DRM driver. The graphics fun for the Linux 2.6.33 kernel though is not yet over.
16 December 2009 - Another DRM Win - 21 Comments

A Great Present In The Linux 2.6.33 Kernel

David Airlie has just called upon Linus Torvalds to pull in the latest DRM patches for inclusion into the Linux 2.6.33 kernel. The Direct Rendering Manager improvements in this next kernel release will be particularly interesting and are perhaps as significant as earlier kernels that had introduced kernel mode-setting support for Intel and ATI/AMD hardware along with in-kernel memory management. The changes that the Linux 2.6.33 kernel will bring are aplenty and will impact almost all of those using an open-source graphics driver stack.
10 December 2009 - Its DRM - 13 Comments

VMware Goes For Mainline Inclusion Of Its DRM

VMware is preparing to propose that its "vmwgfx" DRM kernel driver be pushed into the mainline DRM tree and in turn will then be pulled into the mainline Linux kernel -- as soon as the Linux 2.6.33 kernel. VMware's Jakob Bornecrantz (formerly of Tungsten Graphics) is calling for comments on the two patches that introduce the vmwgfx C header file and then the Direct Rendering Manager code itself. This code will initially be put into the kernel's staging tree and then in a release or two should be found within the main DRM directory.
9 December 2009 - vmwgfx DRM For Linux - 11 Comments

Linux 2.6.32 Kernel Released

Just as planned, Linux 2.6.32-rc8 was the last test release and the final Linux 2.6.32 kernel is now available as of last night.
3 December 2009 - Woohoo!! - 5 Comments

DRM Change Continues To Cause Debate

Kristian Høgsberg on the 6th of November had wrote a message on the DRI development list regarding the libdrm repository. With so much of the Direct Rendering Manager (DRM) work going straight into the Linux kernel -- thanks in large part to all of the work on memory management and kernel mode-setting -- Kristian proposed that the DRM driver code be removed from the separate DRM Git tree. With this message, Kristian created a new DRM repository that dropped all of the linux-core, bsd-core, and shared-core code. Seems simple and straightforward, right? Well, three weeks later with dozens of replies, this change is continuing to cause debate.
29 November 2009 - Still Going On... - 9 Comments

1143 Linux Kernel news articles published on Phoronix.
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