QuantumV - Slashdot User

Ubuntu Ports To ARM 279

Posted by timothy on Thursday November 13, 2008 @02:08PM from the arm-y-of-warmth dept.

nerdyH writes "Canonical will port Ubuntu Desktop Linux to the ARMv7 architecture. The announcement sets the stage for Intel to lose the traditional 'software advantage' that has enabled x86 to shrug off attacks from other architectures for the last 30 years. How long can it be before Microsoft responds with a Windows 7 port? I mean, x86 just can't do 'idle power' like ARM ... Nokia's N810 tablets can standby for several weeks, just like a cell phone, keeping you 'present' on IM, behind IPv4 NAT the whole time. The first Atom MIDs are standing by for 6-7 hours."

Wayland, a New X Server For Linux 487

Posted by kdawson on Monday November 03, 2008 @06:47PM from the at-least-it's-not-called-Y dept.

An anonymous reader writes "Phoronix has a new article out on Wayland: A New X Server For Linux. One of Red Hat's engineers has started writing a new X11 server around today's needs and to eliminate the cruft that has been in this critical piece of free software for more than a decade. This new server is called Wayland and it is designed with newer hardware features like kernel mode-setting and a kernel memory manager for graphics. Wayland is also dramatically simpler to target for in development. A compositing manager is embedded into the Wayland server and ensures 'every frame is perfect' according to the project's leader."

Comment Re:Original article here: (Score 1) 155

by QuantumV on Wednesday August 06, 2008 @03:28PM (#24501429) Attached to: Theorists Make Quantum Communications Breakthrough

Interesting, but the paper seems to have a nasty habit of simply redefining what "capacity" means in a quantum context

The quantum capacity is defined completely analogous to the classical capacity of the channel; the number of error free qubits you can transfer per signal. Since a quantum channel can also be used to transfer classical information (by measuring the output), it also has a classical capacity. Since quantum information cannot be copied without errors it also has a private (or secret) capacity. All capacities are the number of error free quantum/private/classical bits per signal, optimized over all possible encodings.

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