One, Two, Three, or More - View It with DisplayLink and USB
Among the biggest challenges for Linux developers — and one of the reasons we, at least, hear most often for not switching to Linux — is that Linux device support isn't as complete as some other operating systems. The reason for this, of course, has nothing to do with the abilities, inclinations, or availability of Linux developers — the reason Linux lacks support for many devices is because the device manufacturers refuse to provide the drivers, data, and design specs necessary for Linux compatibility.
Some manufacturers, however, are — slowly — moving to ensure compatibility between Linux and their products. Among the latest to do so is DisplayLink, a company that provides USB technology that enables high-resolution displays to be connected not through VGA, DVI, or S-Video ports, but ordinary USB 2.0 connections. The company's products are utilized in many USB-based devices, including projectors, monitors, and docking stations, and there is a plethora of possibilities for Linux devices to use the technology, if only the software-side necessities were available.
That's exactly the problem DisplayLink remedied this week, by releasing a library that will allow Linux developers to provide drivers, X Server compatibility, and other software to enable Linux support for DisplayLink-based devices. Eventually, DisplayLink expects that its technology will be support the full spectrum of Linux-based devices, from mobile phones and other embedded devices to notebooks, netbooks, and all manner of boxen.
DisplayLink is partnering with the Linux Driver Project and Novell to jump-start development of the needed software for Linux compatibility. The LDP, for those unfamiliar, is a consortium of some 200-plus Linux developers focused on establishing Linux compatibility with devices like those produced by DisplayLink — Novell is, of course, the force behind SUSE Linux and the primary corporate backer of the openSUSE project. It's not unusual for traditionally-proprietary firms like DisplayLink to partner with the more corporate side of Linux — companies like Red Hat and Novell that mix Open Source and business — though the fruits of these partnerships generally benefit not only those companies and the respective communities centered around them, but the greater Linux community as well.
Perhaps most encouraging is the license attached to the library. Unlike some firms, who provide drivers and other data under proprietary licenses — making their inclusion at odds with the ideological positions of some distributions and many users — DisplayLink has chosen to release its library under a tried-and-true Open Source license: the Lesser General Public License (LGPL), a close cousin to the perhaps even more recognizable General Public License, or GPL, under which Linux itself is licensed. By providing the library under the LGPL, DisplayLink has ensured that the resulting drivers and other software will have the opportunity to be free and open, unencumbered by the proprietary restrictions so often imposed.
Said DisplayLink Marketing Director Jason Slaughter: "By providing the widest possible support for DisplayLink devices under the LGPL license, we combine the ubiquitous connectivity of USB and the kind of universal device coverage only possible with Linux to creating an ideal breeding ground for innovation on DisplayLink’s hardware platform." And to that, we say: "Amen."
Justin Ryan is News Editor for LinuxJournal.com.
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Justin Ryan is a Contributing Editor for Linux Journal.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide