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• How do I run a 64-bit guest in VirtualBox?

  - by ændrük

  I would like to have an Ubuntu 11.04 64-bit test environment. When I try booting the Ubuntu 11.04 64-bit installation CD in VirtualBox, the following message is displayed by VirtualBox: VT-x/AMD-V hardware acceleration has been enabled, but is not operational. Your 64-bit guest will fail to detect a 64-bit CPU and will not be able to boot. Please ensure that you have enabled VT-x/AMD-V properly in the BIOS of your host computer. What am I doing wrong? Details: VBox.log, ubuntu-test.vbox, and /proc/cpuinfo. Kernel: Linux aux 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux The Virtualization setting in the BIOS is set to Enabled.

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• Make Your Own Origami Star Wars Ships [D.I.Y. Fun]

  - by Asian Angel

  So there you are with a bit of time to kill at work on Friday afternoon or perhaps you are looking for something fun to get into over weekend…what to do? Perhaps an origami project building an awesome fleet of Star Wars ships is the perfect thing to get into! Once you visit the website click on the Gallery Link to view multiple pictures of specific ships or go to Gallery - Diagrams to download your own copy of the ‘Diagrams + Crease Patterns’ that Martin has made available online so far. Here is the video with step-by-step-instructions for making a Naboo Starfighter… Note: Visiting the YouTube link for this video will show more videos by various individuals in the sidebar area for more Star Wars origami goodness! 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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• What is the best way to restrict adult content on 12.04 LTS

  - by Stephen Myall

  I bought my kids a PC and installed 12.04 (Unity) on it. The bottom line is, I want my children to use the computer unsupervised while I have confidence they cannot access anything inappropriate. What I have looked at: I was looking at Scrubit which allows me configure my wifi router but this solution would also affect my other PC and mobile devices. This is not feasible as I just want the solution to work on one PC. I also did some Google searches and came across Nanny (it seems to look the part). My experience of OSS is that the best solutions frequently never appear first on a Google search list so my question is very specific. I want to leverage your knowledge and experience to understand “What is the best way to restrict adult content on 12.04 LTS” as this is important to me. Please don't answer this question "try this or that", then give me some PPA, I am looking for knowledge and experience from someone in my situation. Thanks in advance

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• Why is my wi-fi STILL not working?

  - by Alex Grantham

  i have 10.10, and have gotten ndiswrapper and the proper driver, it installed properly, but still my wi-fi isn't working. In terminal it say its disabled, but its enabled EVERYWHERE... even when I exited windows. Right now i'm left to use an Ethernet cord and a second computer... please help. My windows isn't in good condition and I would love to switch to Ubuntu... but wi-fi is definitely a need. FYI, I have a toshiba satellite a505d-s6958 with the realtek rtl819[somehting something something]... but I have the driver from their webisite... I really just need to get my wifi to work

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• Software Life-cycle of Hacking

  - by David Kaczynski

  At my local university, there is a small student computing club of about 20 students. The club has several small teams with specific areas of focus, such as mobile development, robotics, game development, and hacking / security. I am introducing some basic agile development concepts to a couple of the teams, such as user stories, estimating complexity of tasks, and continuous integration for version control and automated builds/testing. I am familiar with some basic development life-cycles, such as waterfall, spiral, RUP, agile, etc., but I am wondering if there is such a thing as a software development life-cycle for hacking / breaching security. Surely, hackers are writing computer code, but what is the life-cycle of that code? I don't think that they would be too concerned with maintenance, as once the breach has been found and patched, the code that exploited that breach is useless. I imagine the life-cycle would be something like: Find gap in security Exploit gap in security Procure payload Utilize payload I propose the following questions: What kind of formal definitions (if any) are there for the development life-cycle of software when the purpose of the product is to breach security?

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• How did Ubuntu know my WPA Key?

  - by nebukadnezzar

  I've recently moved my /home to another computer (keeping all configuration files), with a fresh installation of Ubuntu 10.10. After Installation I've installed wicd and ndiswrapper, to get my Internet Connection up and running. However, after changing /etc/network/interfaces from auto lo iface lo inet loopback To auto wlan0 iface wlan0 inet dhcp and running sudo /etc/init.d/networking restart to get wlan0 set up, wicd just suddenly connected... to my modem. Without supplying any information about the modem whatsoever. Of course wicd creates a local directory at ~/.wicd/, but that directory is empty, and the temporary global configuration at /var/lib/wicd/configurations/ didn't exist due to fresh installation of ubuntu. So what's the deal? Where did wicd get the ESSID and the WPA Key? There hasn't been any activity in this question, but it's still open (and even worth some rep)!

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• Information about SATA, IDE (PATA) controllers

  - by Adam Matan

  I have a remote computer on which I want to install a new hard drive for rsync backup. The problem is, I don't know what controller technology is used (PATA, SATA, SATA2, ...) and how many available slots are left. I want to spare me an unnecessary drive just for opening the chassis and looking into wires. How do I query the SATA or PATA controllers? I'm interested in the following points: Which controllers exist in the machine How many (and which) disks are attached to each controller How many available slots are there

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• Hello, can you just send me all your data please?

  - by fatherjack

  LiveJournal Tags: Security,SQL Server Our house phone rang on Saturday night and Mrs Fatherjack answered. I was in the other room but I heard her trying to explain to the caller that they were in some way mistaken. Eventually, as she got more irate with the caller, I went out and started to catch up with the events so far. The caller was trying to convince my wife that our computer was infected with a virus. She was confident that it wasn't. Her patience expired after almost 10 minutes...(read more)

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• ATI Catalyst doesn't retain changes after reboot when setting extended display

  - by rfc1484

  I have Ubuntu 11.10 and I'm trying to set up extended display for my two displays. I have an AMD 6870. fglrx and fglrx-updates are installed. When I launch amdcccle trough the terminal (using sudo), I select in tab "Multi-Display" the option "Multi-display Desktop with Display(s)". Then it says for changes to be done I have to reboot my computer. Being a good an obedient lad I do just that, but after rebooting the displays are still in the same "clone" option as before in the Catalyst Control Center and no changes are made. Any suggestions?

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• Balancing game difficulty against player progression

  - by Raven Dreamer

  It seems that the current climate of games seems to cater to an obvious progression of player power, whether that means getting a bigger, more explosive gun in Halo, leveling up in an RPG, or unlocking new options in Command and Conquer 4. Yet this concept is not exclusive to video or computer games -- even in Dungeons and Dragons players can strive to acquire a +2 sword to replace the +1 weapon they've been using. Yet as a systems designer, the concept of player progression is giving me headache after headache. Should I balance around the players exact capabilities and give up on a simple linear progression? (I think ESIV:Oblivion is a good example of this) Is it better to throw the players into an "arms race" with their opponents, where if the players don't progress in an orderly manner, it is only a matter of time until gameplay is unbearably difficult? (4th Edition DnD strikes me as a good example of this) Perhaps it would make most sense to untether the core gameplay mechanics from progression at all -- give them flashier, more interesting (but not more powerful!) ways to grow?

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• Microsoft launches two new Data Centres for Azure in US to meet growing demand

  - by Gopinath

  In order to meet the growing demand for Windows Azure in US, Microsoft has launched two new data centres in US – East US and West US. With the addition of these two data centres the number of Azure data centres across the globe has grown to 8 and 4 among them are located in US. The two new data centres are providing Computer and Storage resources and few enthusiastic customers already deployed their applications. The other services like SQL Azure and AppFabric will be offered by these data centres in the coming months. The addition of new data centres is a good sign to Microsoft as the customer demand for their Cloud offering is growing. Amazon Web Services is the pioneer in Cloud Computing and they offer wider range of Cloud Services compared to Microsoft. Source: Windows Azure Blog

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• Problem with installing programs

  - by Brian Buck

  I am unable to install programs for the Ubuntu 10.10 system. These download ok, but when attempting to install them, the following message is displayed: AN ERROR OCCURRED WHILE OPENING THE ARCHIVE END-OF-CENTRAL-DIRECTORY SIGNATURE NOT FOUND etc....... ZIPINFO: CANNOT FIND ZIPFILE DIRECTORY IN etc...... As I am new to Ubuntu and also fairly "green" as far as computer terminology is concerned, I have no idea what this means and don't have a clue on how to fix it. Can you help please? Many thanks, Brian Buck

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• No dual boot option, no boot priority order

  - by Atul

  I installed Ubuntu yesterday. I partitioned my C: when it was asked to give memory allocation to Ubuntu. The version is 12.04. I was able to install Ubuntu completely: Ubuntu is successfully installed. Restart you computer. I restarted and there was no Ubuntu option. Windows 7 also asked for a boot repair. So I did that too. I then wanted to change my boot priority order to Ubuntu but couldn't find it in BIOS section. I allotted 20GB to Ubuntu and it is deducted from C: but I couldn't see the partitioned drive in Windows 7. Wubi was working fine before on PC with dual boot option. I used Linux Live key creator to boot my PC through pen drive.

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• Encrypting and decrypting single file with master password and passphrase

  - by Iori

  Last night my system shutdown unexpectedly and when i restart it, it gave me superblock error. will then i fixed a little but. i was able to retrive my encrypted files which i encrypted my pgp public key but i was not able to retrive my private key or public key now i have ecrypted file which cannot be open because i have lost my private key. is there any way that i can encrypt my file by providing only master password and passphrase and no physical key or private key and when i am on another computer i can easily open it my same master password and passphrase. Thanks in advance

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• Installation won't finish

  - by saman

  I've just tried to install Ubuntu, but the installation progress bar hasn't progressed for a long time. When trying to install Ubuntu 10, the installation did finish. It said that Ubuntu needed to be restarted. After clicking OK, a list of errors popped up. I restarted the computer, and because i didn't remember that the boot loader is on flash, it didn't load. So now I'm installing ubuntu, but similar to 10 that couldn't restart it, I can't end the install; it says "installing the system". What should I do?

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• Which paradigm to use for writing chess engine?

  - by poke

  If you were going to write a chess game engine, what programming paradigm would you use (OOP, procedural, etc) and why whould you choose it ? By chess engine, I mean the portion of a program that evaluates the current board and decides the computer's next move. I'm asking because I thought it might be fun to write a chess engine. Then it occured to me that I could use it as a project for learning functional programming. Then it occured to me that some problems aren't well suited to the functional paradigm. Then it occured to me that this might be good discussion fodder.

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• Wrong audio volume at boot

  - by skerit

  When I boot my computer and login the volume level is always way too loud. Unfortunately the only way to change it is a physical knob on my speaker. As soon as I can change the volume using my keyboard the volume immediately drops. Say the volume is at 100%, as soon as I turn the dial on my keyboard a little bit it drops to a normal level like 40% How do I get this to work in a clear way, like having it remember the audio level it was on at shutdown? Here's my audio card model: 82801JI (ICH10 Family) HD Audio Controller An Intel card on a Asus motherboard

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• Cannot boot Ubuntu 12.04 on Lenovo V570 fresh install

  - by Jonathan

  I just did a fresh install of Kubuntu 64 bit 12.04 (from the DVD) to a Lenovo V570 laptop. I did a dual boot install with Windows 7. I used the boot layout leftover from Linux Mint 12 (which was working). The installation finished with what seemed to be a success. However, when rebooting, I get this error: GRUB: “invalid arch independent ELF magic” after install on SSD Then I did grub-install and update-grub (I didn't install grub-efi, so maybe this is the problem?) Then I got "unknown filesystem error" at the grub prompt. Desperately, I gave /boot the bootable flag. Then on a reboot,... I got some strange screen with the letters PXE. It flashed momentarily, too fast to read, and then the computer jumped to a screen which asked me from which drive was the boot desired to be. As of now, I have no idea what I am doing.

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• Connectify Dispatch: Link All Your Network Connections into a Super Pipeline

  - by Jason Fitzpatrick

  Connectify Dispatch is a network management tool that takes all the connections around you–Ethernet, Wi-Fi nodes, even 3G/4G cellular connections–and combines them into one giant data pipeline. At its most simple, Connectify Dispatch takes all the network inputs available to your computer (be those connections hard-line Ethernet, Wi-Fi nodes, or cellular connections) and merges the separate data connections seamlessly into one master connection. If any of the connections should falter (like your 3G reception goes out), Connectify automatically shifts the data to other available networks without any interruption. In addition you can specify which network Connectify should favor with connection prioritization; perfect for using your cellular connection without breaking through your data cap for the month right away. Hit up the link below to read more about Connectify Dispatch and the companion app Connectify Hotspot. Connectify Dispatch Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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• Ubuntu won't start

  - by Tomas

  I've had Ubuntu installed, using WUBI, for some time now - a few months or so. It's worked fine until now, allowing me to login, use it's features etc... Two days ago, I turned on my computer and started Ubuntu. It loaded the GUI fine but just showed the loading screen and even after waiting 10 mins on this screen it still wouldn't show me the login page. I am enthusiastic about web design and development and all of my work, along with my portfolio is stored in Ubuntu. Cheers, Tomas EDIT: I am using 12.04 LTS.

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• Lenovo B570 doesn't boot after installation

  - by Alan

  I install my Ubuntu 11.10 64 Bits in my Notebook Lenovo B570. (I remove Win 7). I have no problems to install. But at finish, when it start, it wont boot. It search for another boot device (Network, CD/DVD). Maybe it issue is about SCSI Hard Drive. I try in BIOS set compatible mode SCSI/ATA. It try locate another boot (Networks, CD/DVD). I try to enable compatible mode in BIOS SCSI - SATA and reinstall again. "Will ubuntu be the only os on your computer or is there a 2nd os?" A:Yes. I remove Windows 7 and use All disc to Ubuntu.

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• Compiz antialiasing with xserver-xorg-video-radeon?

  - by eXtractor

  Windows previews are ugly on my computer. Is there any solution to make them smooth? BTW windows previews in Metacity with compositing enabled (/apps/metacity/general/compositing_manager) are looking much better than in Compiz. I am using the open source radeon driver, so I can't configure my videocard preferences via AMD's GUI, and I've tried all options like a texture filter, bicubic filter or mipmapping I found in ccsm with no result. How to make windows previews in Compiz be as smooth as they are in Metacity? And sorry, my English sucks just like these windows thumbnails in Compiz.

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• How do I limit the size of my syslog?

  - by Wayne Werner

  I've got my mom's computer running Ubuntu 12.04 LTS. It's been working just fine but all of the sudden syslog has been filling up. And by filling up I mean I just deleted a /var/log/syslog that was 400GB in size. Yes - Gigabytes. While I'm sure there was some useful information in there, I'm not sure that 400GB is any kind of information to sift through. And what's really amazing about it is that it happened within a period of 8 hours - I had ran df around noon, and between then and now her drive filled up 30% (from just under 70% to 100%). What could be causing this and how could I fix it?`

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• How to Fix a Stuck Pixel on an LCD Monitor

  - by Chris Hoffman

  Have you ever noticed that a pixel – a little dot on your computer’s LCD monitor – is staying a single color all of the time? You have a stuck pixel. Luckily, stuck pixels aren’t always permanent. Stuck and dead pixels are hardware problems. They’re often caused by manufacturing flaws – pixels aren’t supposed to get stuck or die over time. Image Credit: Alexi Kostibas on Flickr How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot Our Geek Trivia App for Windows 8 is Now Available Everywhere

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• Qt Certification Exams

  - by karlphillip

  I'm wondering about doing a Qt Certification Exam this year, but I'm not 100% sure the investment is worth. I'm considering it because I think it could be a nice + on my resume, and as you know, I'm all for improving my software engineer persona. As I already earn a BSc and MSc degrees in computer stuff, I guess I see the certification process as some kind of adventure. Anyway, I know I'll spend a lot of time preparing myself for the exam and I just wanted to know if a Qt certification is worth the effort. Apparently there are 2 certificates that you can get in the Qt world: Nokia Certified Qt Developer (basic) Nokia Certified Qt Specialist (advanced) Nowadays I build cross-platform software in C++ and this exam would fit beautifully in my resume. My main concern is that, given the obscure future of Qt, I might be throwing time and money out the window. I'm looking for some advice regarding the usefulness of such certifications.

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