Windows 8 Update: OS gets friendly with Linux

Microsoft works out rift with Linux community over dual boot issue; video efficiency; latest on Windows RT

s initial boot security for Windows 8 made it hard to start other operating systems on Win8 machines, but the company has worked out a way for Linux and other OSes to clear the secure boot sequence on such devices.

The secure boot, called Unified Extensible Firmware Interface (UEFI), requires a key for the boot firmware to hand off to the operating system, the idea being to make sure the operating system isn't corrupt.

Microsoft's initial UEFI implementation was restrictive by making it difficult for non-Windows operating systems to get their keys included in the firmware, says Tim Burke, vice president of Linux engineering for Red Hat, in a blog. But that's all been cleared up with some cooperation among interested parties, he says.

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Linus Torvalds
Now the keys can be registered via Microsoft key signing and registry services for $99. That way participating vendors can get their keys accepted by the machines so their OSes will boot. "I'm certainly not a huge UEFI fan, but at the same time I see why you might want to have signed bootup etc," Linux kernel creator Linus Torvalds (pictured) is quoted as saying in the ZDNet Linux and Open Source blog. "And if it's only $99 to get a key for Fedora, I don't see what the huge deal is."
Power sipping video hardware

Windows 8-certified hardware will offload video decoding to a hardware subsystem, according to the Building Windows 8 blog.

"This allows us to significantly lower CPU usage, resulting in smoother video playback and a longer battery life, as the dedicated media hardware is much more efficient than the CPU at media decoding," Scott Manchester, group program manager for Microsoft's Media Platform and Technologies team, writes in the blog. "This improves all scenarios that require video decoding, including playback, transcoding, encoding, and capture scenarios."

A chart in the blog (below) indicates the hardware will call for a half to a third of the CPUs needed by Windows 7 for the same video tasks.

Chrome for Metro
Google's Chrome browser is getting tuned up to support Windows 8 in both desktop and Metro modes. Presumably, it won't be much challenge to get the browser to run in desktop mode since Microsoft says any app that run on Windows 7 runs on Windows 8.

But it's a little more challenging to fit it out to handle Metro and all its touch features. The company has been working on it since March, and says, "Over the next few months, we'll be smoothing out the UI on Metro and improving touch support, so please feel free to file bugs."

Samples of the browser will be available with the next Chrome Dev channel release, but the company doesn't say when that is. It also takes the opportunity to restate it's complaint that Chrome is banned from Windows RT, the ARM version of Windows 8 "Chrome won't run in WinRT, i.e. Windows 8 on ARM processors, as Microsoft is not allowing browsers other than Internet Explorer on the platform," Google says.

Qualcomm is down with Windows RT
Qaulcomm says it is making ARM chips designed for Windows RT devices -- the Windows 8 combo of operating system, limited Microsoft Office and hardware that won't run x86 applications. The chips are called Snapdragon S4 Pro.

Linux 3.3 released after minor delay

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Networking, new hardware support and Android re-integration added to Linux kernel

Version 3.3 of the Linux kernel was released on Sunday, adding support for a new processor architecture, re-integrating the Android code base back into the main line, and introducing networking improvements.

EARLIER: Linux kernel 3.3 delayed

A virtual switching package called Open vSwitch was added to the new variant of the kernel, in a move meant to provide more robust VM configuration options compared to the existing Linux bridge. This could be particularly helpful to companies that maintain heavily virtualized environments. Combined with improvements in the way Linux handles complex network traffic, this could make version 3.3 a substantial step forward for the data center.

Support for the Texas Instruments C6X family of single- and multiple-core processors was also integrated into Linux 3.3, as was a new type of bootloader that allows a single kernel image to be used for both EFI and BIOS.

However, the most notable change may have been the reincorporation of most of the Android mobile platform back into the main Linux tree. The decision to do so was reached at the Kernel Summit in December 2011, according to LWN, which added that the move came as something of a surprise.

The full release was expected roughly a week ago, but kernel maintainer Linus Torvalds imposed a slight delay, saying that a number of minor issues needed to be addressed.

"Things did indeed calm down during the last week," he wrote in the announcement.

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