Compiz Killed My Video Card
Having recently installed a new version of Linux I thought I'd see how progress on Compiz, the compositing window manager, was going. I tried it first on a system with an ATI video card and was met with a wonderful blank screen. Since I really didn't want to spend a bunch of time trying to figure out what was going on I just put things back to normal and got X working again.
However, before I gave up completely I thought I'd try it on a system I have with an NVidia video card. Set things up on it, and... same result, blank screen. And this is where it gets interesting: I put things back as they were before and I still got a blank screen. So, I figured I needed to try the Windows solution: reboot. I shut the system down, unplugged it for a few seconds just to be sure and booted. And... still a blank screen, and I mean blank, no BIOS screen, no nothing.
Checked the monitor on another system and it was working fine. Seemed unlikely that Compiz had actually fried the video card but that's what it was looking like.
Since the video card had both a DVI and a VGA output I thought I'd try a monitor with a VGA connector rather than a DVI connector. That worked! Booted, got the BIOS screen and X. Figured maybe whatever had been boinked on the video card was now reset so I tried the DVI again. Now the DVI worked, although the BIOS screen was horribly stretched across the screen, but it booted fine and started X without problems and everything has been fine since.
Mitch Frazier is an Associate 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.
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