The Acer Aspire One is a netbook that often ships with a Linux OS preinstalled. This is great for fans of open source as market share is calculated based on units shipped, not what users install after they buy the hardware. Unfortunately there is a pretty major flaw that can cause a “failed to initialize HAL” error as seen above. [Michael Crummy] came up with a set of steps you can use to recover from this error.
So what is this error? HAL stands for Hardware Abstraction Layer and it’s what allows one user interface to communicate with many different types of hardware. If you’re the proud owner of an Aspire One and are struck with this error you will suddenly find that you can no longer use the USB ports, card readers, wired or wireless network connectors, or the sound card. So you can’t connect to the Internet, and you can’t get any files on or off of the device using the currently installed operating system. For an OS that [Neal Stephenson] once described as “like the M1 tanks of the U.S. Army, made of space-age materials and jammed with sophisticated technology” this is a very big problem.
We know what you’re thinking… boot into a live session on a thumb drive and get what you need from the hard disk. Well that’s all fine and dandy, but you shouldn’t ever be forced to clean install Linux to fix a problem. So check out [Michael’s] method and make sure you turn off the Acer live update server which was mostly likely the cause of the problem in the first place.
Since the adoption of Kernel 2.6, Linux has used the udev system to handle devices such as USB connected peripherals. If you want to change the behavior when you plug something into a USB port, this section is for you. As an example, we will use a USB thumb drive but these methods should translate to any device handled by udev. As a goal for this exercise we decided to create a symlink and execute a script when a specific thumb drive was loaded. The operating system we used for this exercise is Ubuntu 9.04 Jaunty Jackalope. Continue reading “How to write udev rules”
The HAL two-leg exoskeleton is now available for rent in Tokyo for $2300 per month. We saw the HAL in our power suit roundup from last year. There is footage of this lower-extremity suit demonstrated by three people. The video is a bit creepy because the they are apparently just out for a stroll in the city.
We really do want to see this succeed. Every time another advancement in exoskeletons comes around we glimpse the future of mobility and freedom for victims of paralysis. The machine is controlled via an interface that picks up electrical impulses on the surface of the skin. The built in battery provides power for up to five hours of operation before recharging is necessary.
When we compiled our list of real life power suits last May, the HAL suit was being pitched as a $1000 a month rental. Cyberdyne has changed their tune for the better recently. Teports suggest that the first 400 unit run of powered exoskeletons will sell for $4200, less than a Segway. The suit can increase the wearer’s strength ten-fold and will run continuously for nearly three hours.