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  • A Dozen USB Chargers Analyzed; Or: Beware the Knockoffs

    - by Jason Fitzpatrick
    When it comes to buying a USB charger one is just as good as another so you might as well buy the cheapest one, right? This interesting and detailed analysis of name brand, off-brand, and counterfeit chargers will have you rethinking that stance. Ken Shirriff gathered up a dozen USB chargers including official Apple chargers, counterfeit Apple chargers, as well as offerings from Monoprice, Belkin, Motorola, and other companies. After putting them all through a battery of tests he gave them overall rankings based on nine different categories including power stability, power quality, and efficiency. The take away from his research? Quality varied widely between brands but when sticking with big companies like Apple or HP the chargers were all safe. The counterfeit chargers (like the $2 Apple iPad charger knock-off he tested) proved to be outright dangerous–several actually melted or caught fire in the course of the project. Hit up the link below for his detailed analysis including power output readings for the dozen chargers. A Dozen USB Chargers in the Lab [via O'Reilly Radar] 6 Start Menu Replacements for Windows 8 What Is the Purpose of the “Do Not Cover This Hole” Hole on Hard Drives? How To Log Into The Desktop, Add a Start Menu, and Disable Hot Corners in Windows 8

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  • How do I get a Vodafone K3772-Z USB modem working?

    - by Ian
    I recently switched from Win 7 to Ubuntu 12.04...Best day of my life :) I have a question relating to my Vodafone K3772-Z USB modem. When I plug it in, the lights start flashing on the device, meaning that it is functional. In the network menu I get a "Wired network Vodafone K3772-Z disconnected". I have set up the a connection by using Edit connections - mobile broadband - Add, but in the add window the "Create a connection for this mobile device" is blanked out and says "Any Device". Does anyone perhaps have an idea of what I could do to get it working?

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  • Boost Your SEO Efforts With Twitter

    Search engine optimization techniques continue to expand so that more innovative ways of drawing traffic to your website can be used effectively. While the online revolution has changed many things in a common man's life, one exciting facet of the World Wide Web is social networking. With social networking giants such as Twitter, Facebook, LinkedIn, Orkut and MySpace hitting the pinnacle of popularity, people have the luxury of making online friends, interact with people irrespective of national boundaries and discuss world issues without any ethnic or racial biases. Webmasters and social network gurus have also capitalized on this immense opportunity to expand their businesses and draw more traffic to their websites.

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  • Free ebook: Troubleshooting SQL Server: A Guide for the Accidental DBA

    We spend much of our working life helping solve SQL Server-related performance problems, hands-on, during consulting, or on online forums. We've seen a few weird-and-wonderful issues but, mainly, it’s the same problems and misconceptions time-and-again. This is our attempt to describe, diagnose, and solve the most common problems with SQL Server 2005, 2008, and 2008 R2. And it's free. "It really helped us isolate where we were experiencing a bottleneck"- John Q Martin, SQL Server DBA. Get started with SQL Monitor today to solve tricky performance problems - download a free trial

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  • bootscreen downscaled

    - by blackmist
    my specs intel mb dh67cl corsair 4gb ram nvidia 560ti gtx i5 processor dell 22" monitor 1920x1080 firstly, i began using ubuntu last year. now im in love with it. just one minor detail i dont like is that the bootscreen changed just after the first boot. now im using 12.04.1. i will explain how it happened. first i installed ubuntu via windows. so it booted for the first time and life was beautiful. the resolution was 1920x1080. then i installed the nvidia drivers, all the updates and codecs for the medias. now the ubuntu bootscreen downscaled to a lower resolution. i tried searching for answers, but nothing was for ubuntu 12.04.1. since im a newbie, i didnt want to take any chances. i need help. i like the bootscreen.

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  • 12.04 freezes on install

    - by CHris
    I'm new to ubuntu and can't for the life of me understand how to get around this issue. I'm having a problem where when I insert the boot disk that i burned for 12.04, it loads and gives me the language option and select an installation type, i select either try ubuntu / install ubuntu and it begins to load. Then after about 5 mintues of the purple screen with the dots under the UBUNTU it freezes the whole computer, and the only way to get out is to turn off the laptop with the power button. I have read previous threads saying people had similar "freezing" issues including ones that mention my model of laptop, HP Pavillion DV1000. But it appears their problems are post installation and relate to their wireless cards. I have tried changing the boot options (F6) and I am totally stuck. Can anyone shed any light on to this issue? Thanks in advance.........

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  • is OpenID really that bad?

    - by DoPPler
    I have seen this question on Quora where lots of people seem to agree that OpenID is bad, even going as far as stating that: OpenID is the worst possible "solution" I have ever seen in my entire life to a problem that most people don't really have Then I've seen articles and tweets referencing that question saying that OpenID has lost, and Facebook won. It's sad to read as I quite like the OpenID (or at least idea behind it). I literally hate getting yet another login/password for page (I'll forget it anyway) - it's a pretty serious issue for me and I know lots of people with the same problem. Thus I thought that OpenId is a great solution but I'm not sure anymore. So the question is should I still bother to implement OpenID or it's not worth it? What is the most robust and convenient (from the user perspective) way to identify and authenticate an user?

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  • Hard drive clicking noise on Acer AO722

    - by Blank
    I'm running Ubuntu 11.10 on an Acer Aspire One 722. Whenever I'm on battery power I get a clicking sound from my hard drive every 5 seconds or so (this does not happen when the laptop is plugged in). I'm dual booting with Windows 7 and I don't get the clicking sound in Windows. The clicking sound stops when I run the command:sudo hdparm -B 254 /dev/sda Also, according to:sudo smartctl -H /dev/sda my hard drive is healthy. Is this clicking sound something I can just ignore? Or is it a serious problem and will it eventually damage my computer? If so, how would I fix it? I have tried adding hdparm -B 254 /dev/sda to my /etc/rc.local file, but I still run into the clicking problem if my computer boots while plugged in and is then unplugged. Also, I'm finding this fix to be unreliable. Sometimes it works, sometimes it does not. Is this a good solution and is there a better way of doing this? Also, would running my laptop with a -B value of 254 have any negative effects? (I read somewhere about a lower level protecting the hard drive from bumps)

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  • 12.04 - sound is laggy when running games through Wine

    - by orzechowskid
    Lenovo U400 Wine 1.5.5 Ubuntu 12.04 with all updates applied I'm experiencing severe (~500ms) audio lag in all games run in Wine. Portal 2, Half-Life, World of Goo, and Fallout are all exhibiting this problem. When I run winecfg though and click the "Test Sound" button at the bottom of the Audio tab, the sound effect appears to play immediately. So I'm not sure what's going on. I don't think it's a problem with PulseAudio by itself since totem videos and Youtube clips both play in perfect sync. Anyone have any ideas on where to start fixing this? thanks! (edit: I thought this was limited to Steam games but I installed a non-Steam game and I now see that's not the case. I get audio lag in other apps too.)

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  • VDC Research Webcast: Engineering Business Value in the IoT with Java 8

    - by tangelucci
    Date: Thursday, June 19, 2014 Time: 9:30 AM PDT, 12:30 PM EDT, 17:30 GMT The growth of the Internet of Things (IoT) opens up new service-driven opportunities, delivering increased efficiencies, better customer value, and improved quality of life. Realizing the full potential of the Internet of Things requires that we change how we view and build devices. These next-generation systems provide the core foundation of the services, rapidly transforming data to information to value. From healthcare to building control systems to vehicle telematic systems, the IoT focuses on how conneted devices can become more intelligent, enhance interoperability with other devices, systems and services, and drive timely decisions while delivering real business return for all. Join this webcast to learn about: Driving both revenue opportunities and operational efficiencies for the IoT value chain Leveraging Java to make devices more secure How Java can help overcome resource gaps around intelligent connected devices Suggestions on how to better manage fragmentation in embedded devices Register here: http://event.on24.com/r.htm?e=793757&s=1&k=4EA8426D0D31C60A2EDB139635FF75AB

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  • Ubuntu 12.04 gets overheated, whereas I have no heating problems on Windows 7 whatsoever

    - by G K
    I bought a new laptop which came pre-installed with Windows 7. I love working on Ubuntu and hence installed it. I can work on Windows for 6 hours at a stretch and feel the laptop being only slightly warm, but 15 minutes into running Ubuntu and my laptop is too hot. The battery also drains out very quickly on Ubuntu. 1.5 hrs of backup on Ubuntu compared to 5-6 hrs on Windows. I previously owned a Dell Inspiron N5010 and everything ran smoothly on that. No heating issues. It came with intel i3 processor. So I'm wondering whether this problem has something to do with the processor? (AMD A8) Specs: HP Pavilion G6-2005AX Laptop (APU Quad Core A8/ 4GB/ 500GB/ Win7 HB/ 1.5GB Graph) 1 GB AMD Radeon HD 7670M Dedicated 512 MB AMD Radeon HD 7640G Graphics Integrated Is there any fix for this problem? Thanks in advance. Edit: I've installed ATI proprietary drivers suggested by Ubuntu.

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  • How to set up multiple GPUs (12.04)?

    - by Brother Erryn
    I have two GPUs: one Intel i915 integrated, and one NVIDIA 560 Ti. This is NOT a hybrid setup, nor a laptop. In Windows 7, each card is connected to a different monitor, with the NVIDIA doing any "heavy lifting". For the life of me I cannot get Ubuntu to recognize the i915, but when logging off or rebooting, the shutdown actually appears on the i915. lshw lists both. I'm running the "current" NVIDIA drivers (not the experimental), but Displays calls its monitor a "Laptop". Is this even possible under Ubuntu? The only things that even looked like potential solutions were for laptop hybrid setups and used Bumblebee, but that doesn't seem to apply here.

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  • How can I get nVidia CUDA or OpenCL working on a laptop with nVidia discrete card/Intel Integrated Graphics?

    - by PeterDC
    Background: I'm a 3D artist (as a hobby) and have recently started using Ubuntu 12.04 LTS as a dual-boot with Windows 7. It's running on my a fairly new 64-bit Toshiba laptop with an nVidia GeForce GT 540M GPU (graphics card). It also, however has Intel Integrated Graphics (which I suspect Ubuntu's been using). So, when I render my 3D scenes to images on Windows, I am able to choose between using my CPU or my nVidia GPU (faster). From the 3D application, I can set the GPU to use either CUDA or OpenCL. In Ubuntu, there's no GPU option. After doing (too much?) research on the issues with Linux and the nVidia Optimus technology, I am slightly more enlightened, but a lot more confused. I don't care one bit about the Optimus technology, as battery life is not by any means an issue for me. Here's my question: What can I do to be able to use CUDA-utilizing programs (such as Blender) on my nVidia GPU in Ubuntu? Will I need nVidia drivers? (I have heard they don't play nicely with Optimus setups on Linux.) Is there at least a way to use OpenCL on my GPU in Ubuntu?

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  • Blank Screen ... No Bios Loading Screen Either

    - by SwissStar
    I don't even know how long it's been but I had given up. until now. My screen does not come on AT ALL, not even and the Bios loading screen. I have to connect it to my TV in order to see. But there's one thing that has always started it back up, and that is by running a hard ware Diagnostics * Provided by DELL* . It is definitely has something to do with Ubuntu. I know that for sure, because I remember running an update and BAM . That was it for the screen. How could I restore my screen back to Life ? I have a Nvidia Graphics Card.

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  • Unwanted systray icons

    - by Sparrowhawk4
    Is there any way to manage the icons in your systray? It's not highly important, but it annoys me having icons there that I don't want or use. It seems a little strange that it's so easy to customise just about everything else, but I can't for the life of me find a way to edit the systray. Maybe I'm just missing something? If there are specific ways of getting rid of each one, the I'd like to remove the Ubuntu One icon, the mail icon, and possibly the icon that says En1, and allows you to choose between UK and US English, unless that is important and I haven't realised it. I'm using Ubuntu 13.10.

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  • 12.04 doesn't boot anymore after a power failure

    - by Felix
    I'm a Windows user and I have no experience with Linux and Ubuntu. I installed Ubuntu 12.04 on my netbook (Asus 1215B) and everything works fine. Yesterday I ran the "update application" and updated over 120 "things" (I have no idea what exactly). After that I was asked to reboot, and I did. Ubuntu starts again and at the load screen with these 5 dots that normally begin to change color, it freezes. After 20 minutes I took out the battery to try another reboot (yes, not the the best idea), and now nothing happens. I boot from the HDD and I get an Error BOOTMGR is missing. I have important data on the hard drive. Is there an option to get this fixed? Or if not, to at least get the data from the hard drive? Ubuntu 12.04 64-bit Edit: it is ONLY Ubuntu on this Netbook, which uses the whole 500gb HDD as 1 Partition. Filesystem is NTFS. Whole Hardware seems okay. The USB drive which i used to instl the Os was formated in fat32

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  • SmartCity World Congress

    - by user511693
              The population density of cities demands actions to be taken to ensure sustainable and environmentally-friendly economic growth that is capable of improving the quality of life of their inhabitants. This is their main challenge and the reason why society is calling for more Smart Cities.  SmartCity Expo & World Congress will bring together key speakers and representatives of the leading organizations with the most innovative ideas in the world. Attend the “Open Innovation for Developing Smart Cities” session with Oracle on November 30th.  Learn about Oracle’s solutions for Smart Cities.

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  • Cannot get grub menu to timeout (or go away)

    - by Eric
    I am running Ubuntu 12.04. I cannot for the life of me get the grub menu (with options) to go away. I would like it to auto-boot into the first option. I've edited /etc/default/grub so that it looks like the following: GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX="" After this, I ran sudo update-grub. Then I realized that I had grub 2, so I ran sudo update-grub2 (both make it look like they create the grub.cfg file successfully. I restart my computer and it goes back to the grub menu and just sits there until I make a choice. This is not desirable if the power goes out... :-) I also tried reinstalling grub using sudo grub-install /dev/sda - also unsuccessful

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  • What is the effect of creating unit tests during development on time to develop as well as time spent in maintenance activities?

    - by jgauffin
    I'm a consultant and I am going to introduce unit tests to all developers at my client site. My goal is to ensure that all new applications should have unit tests for all classes created. The client has a problem with high maintenance costs from fixing bugs in their existing applications. Their applications have a life span from between 5-15 years in which they continuously add new features. I'm quite confident that they will benefit greatly from starting with unit tests. I'm interested in the effect of unit tests on the time and cost of development: How much time will writing unit tests as part of the development process add? How much time will be saved in maintenance activities (testing and debugging) by having good unit tests?

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  • Sudden Breakthroughs (Miracles at work)

    - by MobileDev123
    Lot of things has been discussed that can be taken as negative things about programmers work. Lets discuss about something good and unexpected things that happen to programmers. Example: (After R&D of two days and a lot of disappointments) You just spend an hour with your PM to explain that some feature due to some problem you are unable to release this module in today's beta... after a lot of arguments you are given an hour to make your app work without this module. You sit on your workstation to make a release and all of a sudden you find what turns out to be a silly little problem.... (you solve it and prepare a desired build) did you face miracle (= sudden, positive surprises?) in your life?? what was your reaction in case you have come through such experience?? (N.B. I know my English is not that good and that's why I'm open to every linguistic mistakes needed to be corrected)

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  • Returning status code where one of many errors could have occured

    - by yttriuszzerbus
    I'm developing a PHP login component which includes functions to manipulate the User object, such as $User->changePassword(string $old, string $new) What I need some advice with is how to return a status, as the function can either succeed (no further information needs to be given) or fail (and the calling code needs to know why, for example incorrect password, database problem etc.) I've come up with the following ideas: Unix-style: return 0 on success, another code on failure. This doesn't seem particularly common in PHP and the language's type-coercion messes with this (a function returning FALSE on success?) This seems to be the best I can think of. Throw an exception on error. PHP's exception support is limited, and this will make life harder for anybody trying to use the functions. Return an array, containing a boolean for "success" or not, and a string or an int for "failure status" if applicable. None of these seem particularly appealing, does anyone have any advice or better ideas?

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  • Excel duration converts to date

    - by Malcolm Anderson
    I'm working on an Excel 2010 spreadsheet and I'm trying to put in durations for some tasks I want to schedule.The interesting thing is that up until a few minutes ago, I couldn't do it.I was entering in "47:00" and excel was (and still is) converting it to "1/1/1900 23:00:00"In my mind, I want the value to be 47 minutes, but for the life of me I cannot find a fix for this behavior.Here's the weirdest thing, I haven't had this problem in the past.  Usually I put in times, add them up and they work like magic.  Put in 18 entries of 20 minutes each, total them and excel will usually tell me that it's a total of 6 hours.No problem.Today, problem.Here's the weird bit:As I was writing this post, I got it to work.By formatting the column as custom "[hh]:mm" and summing the columns, I can get total times.But the times are still being formatted into dates if I look at the underlying data.  Bottom line, if you need to calculate durations, you can, but don't look too closely at what is happening underneath the covers.

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  • List of Asus U46 laptop troubles with Ubuntu 12.04

    - by Cybertib
    I've bought my ASUS U46 last february. I would like to make it work better with Ubuntu 12.04. Note taht I was forced to install Ubuntu 12.04 (before its publication) by ethernet. After a successfull install, several problem remain unfixed such as : USB 3 just does not work correctly. Can be fixed, but I didn't succeed yet. Nvidia Optimus (means that you can use Intel Chipset or the Nvidia GeForce) is possible to use thanks to BumbleBee project. It seems to work, though. But Nvidia tools still say they don't see any Nvidia driver installed. Battery duration can be optimised by using Laptop-tools. Any standby state lead to a X server crash. A good CTRL+ALT+F1 login and "shutdown -r" avoids a brutal power off. And since few weeks, I have some bug reports right after boot about "unattended-upgrade", and dpkg troubles after any apt-get install or update (Linux kernel doesn't compile anymore), ... Are there any ways to fix those troubles ? I would need a bit of assistance, in fact. Thank you for you help, Sincerly yours, Thibault

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  • SQL Injection: How it Works and How to Thwart it

    This is an extract from the book Tribal SQL. In this article, Kevin Feasel explains SQL injection attacks, how to defend against them, and how to keep your Chief Information Security Officer from appearing on the nightly news. NEW! The DBA Team in The Girl with the Backup TattooPina colada in the disk drives! How could any DBA do such a thing? And can the DBA Team undo the damage? Find out in Part 2 of their new series, 5 Worst Days in a DBA’s Life. Read the new article now.

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  • What does ^+Z do to a process

    - by Kifsif
    In command line I wrote: michael@ubuntu:~$ firefox Firefox launched. Command prompt ($) disappeared. Then I pressed ^+z. The result was: [1]+ Stopped firefox Well, Firefox really stopped. It did not react anyhow. So, I could not close it by pressing the cross of the window. By the way, the menu items 'Tools', and 'Help' somehow showed some signs of life. They showed drop-down lists, but nothing more (no reaction to inner menu items). Well, I could not end Firefox through System Monitor. Could you comment on this case: what happened after pressing ^+z?

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