Linux Kernel News Archives
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
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
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
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
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
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
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
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
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
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
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
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
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 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
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
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
Linus Torvalds this afternoon put out the Linux 2.6.32-rc8 kernel release. The Linux 2.6.32 kernel, which brings 3D DRM and KMS support for ATI R600/700 GPUs, new wireless drivers, an improved VIA frame-buffer, and other improvements, is getting ready for release. Linus expects 2.6.32-rc8 to be the last release candidate if all goes according to plan.
19 November 2009 - This Month - 1 Comment
While there is already work building up for the Linux 2.6.33 kernel like the just talked about KMS page-flipping ioctl, we are still in the middle of the Linux 2.6.32 development cycle. Linus Torvalds has just issued the 2.6.32-rc7 release after it was delayed by another serious -- but now fixed -- regression (this time in the resume support).
12 November 2009 - Kernel Update
Being worked on for the past several months by Kristian Høgsberg and other developers has been the KMS page-flipping ioctl, which makes it possible for kernel mode-setting drivers to benefit from tear-free updating of the screen with low-latency page-flipping. This kernel DRM ioctl is also a requirement for the Wayland Display Server. The page-flipping ioctl should have made it into the Linux 2.6.32 kernel, but it didn't end up happening due to some last minute work.
12 November 2009 - Kristian Tries Again - 7 Comments
The Linux 2.6.32-rc5 kernel was released over two weeks ago, but it was not until today that 2.6.32-rc6 was tagged. This is not because of Linus's affection towards Windows 7, but rather the Linux Kernel Summit that was taking place in Tokyo and a nasty data-loss-causing EXT4 regression had to be tracked down and addressed. Linux 2.6.32-rc6 is available though right now and it carries a good number of changes considering the time-span between releases, including some regression fixes that were introduced during the 2.6.31 cycle and various driver updates.
3 November 2009 - Two Weeks After -RC5
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