Subject: General Tech | May 29, 2013 - 09:20 PM | Tim Verry
Tagged: x11, weston, wayland, videocore iv, Raspberry Pi, linux, bcm2835, arm
The Raspberry Pi Foundation has been working with Collabora to fund development of a Wayland display server that is compatible with the Raspberry Pi and also allows the continued use of legacy X applications.
So far, operating systems that run on the Raspberry Pi have used X as the display server and window compositor. The Raspberry Pi Foundation wants to move to a window compositor that will take advantage of the Raspberry Pi's Hardware Video Scaler (HVS) and take the burden of window composition off of the relatively much slower ARM CPU. The Raspberry Pi Foundation has chosen Wayland as the display server for the task.
The Raspberry Pi Model A.
Taking advantage of the HVS and OpenGL ES compatible GPU will make the system feel much more responsive and allow for advanced effects (fading, Expose'-like window browsers, et al) for those that like a little more bling with their OS.
The Wayland/Weston display server allows for GPU acceleration and window composition using the Pi's VideoCore IV GPU and HVS (which is independent of the hardware units that run OpenGL code). The display server will feed the entire set of windows along with how they should be laid out on screen (stacking order, transparency, 2D transform, ect.) to the HVS which will hardware accelerate the process and free the ARM CPU up for other tasks.
According to the Raspberry Pi Foundation, the Raspberry Pi's HVS is fairly powerful for a mobile-class SoC with 500 Megapixel/s scaling throughput and 1 Gigapixel per second blending throughput.
In addition to GPU acceleration, Wayland will allow non-rectangular windows, fading and other effects, support for legacy X applications with Xwayland, and a scaled window browser.
The Raspberry Pi Foundation has been working with developers since late last year and is nearly ready to roll a technology preview into the next Raspian operating system release. The developers are still working on improving the performance and reducing memory usage. As a result, the new Wayland/Weston display server is not expected to become the new default in the various Raspberry Pi operating systems until late 2013 at the earliest.
This is a project that is really nice to see, especially since at least a small part of the development work going into supporting the ARM-based Raspberry Pi on Wayland will help other ARM devices and Wayland in general which is becoming an increasingly popular choice in new Linux distributions and the best X alternative so far. Of course, this is primarily going to be a useful update for those Raspberry Pi users that run OSes with GUIs as the responsiveness should be a lot snappier!
If you simply can't wait until later this year, it is possible to install the technology preview (beta) of Wayland/Weston onto the current version of Raspbian Linux by cloning the git project or installing a Raspbian package of Weston 1.0. Blogger Daniel Stone has all the details for installing the display server onto your Pi under the section titled "sounds great; how do i get it?" on this post.
See a video of Wayland technology preview in action on the Raspberry Pi on the Raspberry Pi Foundation's blog.
Read more about the Raspberry Pi at PC Perspective.
Subject: General Tech, Mobile | June 1, 2012 - 02:24 PM | Tim Verry
Tagged: x11, ultrabook, u2442, u2440, notebook, gigabyte
Gigabyte, a company mostly known for its motherboard manufacturing, has announced a new lineup of small and lightweight notebooks. Among the new systems are the X11, U2442, and U2440 notebooks. Running Windows 7 and powered by Intel’s latest Ivy Bridge processors, the ultra-portables pack plenty of power.
The X11 is an ultra-lightweight 11.6” notebook at 975 grams and .3cm at it’s thinnest point (1.65cm at its thickest point). Constructed of carbon fiber, it was built using a woven diamond technique that resulted in it being lightweight while maintaining rigidity. It is powered by an Intel Ivy Bridge processor and 128GB SSD. It further comes with USB 3.0 and Bluethooth 4.0 connections. A 16:9 LED backlit display connected via an aluminum hinge is another feature of this laptop. Intel’s Rapid Start and Anti-Theft technologies and a Smart Recovery system are also built in.
For those that require dedicated graphics, Gigabyte has also launched a 14” notebook with NVIDIA GeForce GT 650M or GT 640M graphics cards. The U2442 weighs in at 1.57kg and ranges in thickness from 18.5-21mm. The computer also uses Intel’s Ivy Bridge processors, but the larger form factor has allowed Gigabyte to give the notebook a dual vent design for the GPU and CPU respectively. It also comes with a 1600x900 LED backlit display, backlit keyboard, and THX TruStudio Pro audio technology. The U2442 notebook further has a 128GB mSATA SSD paired with a 750GB hard drive as well as WiFi, USB 3.0, Bluetooth 4.0, and HDMI 1.4 connectivity. The “Champagne Gold” colored cover has a brushed aluminum texture that looks nice as well. No carbon fiber here, but it does look to be all aluminum.
Finally, the U2440 is designed to be less powerful–but more portable–than the U2442. This 14” notebook comes with an Intel Ivy Bridge processor, NVIDIA GeForce 630M graphics card, optical disc drive, 1TB mechanical hard drive, and a mSATA slot for SSD upgrades. The system has taken a downgrade on display resolution versus the U2442 with only 1366x768 pixels. It supports up to 8GB of DDR3 memory, 802.11n WiFi, and a 1.3 megapixel webcam. Further, the U2440 has 1 USB 3.0 port, two USB 2.0 ports, VGA, HDMI, RJ45, microphone input, and headphone output ports. The U2440 comes in a dark gray colored chassis with a brushed aluminum texture on the notebook lid.
As far as pricing and availability, the X11 carbon fiber notebook will be available in July with street prices ranging from $999 to $1299 USD. The U2442 will also retail for between $999 and $1299 USD, but it will be available sooner–towards the middle of June. The U2440 isn’t as light as the X11, or as powerful as the U2442 but it has both of those systems beat on price. The U2440 will have street pricing that starts at $699 USD before tax and will be available for purchase at the end of June.
They seem like interesting systems, and they look nice as well. What do you guys think of the Gigabyte notebooks?