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• understanding computers [closed]

  - by Ashwin

  Possible Duplicate: Good resources to understand how a program interacts with machine hardware I don't know if this is the correct StackExchange site to ask this question. But I could not find any other. I want to understand how a computer works from the software level to the internal structure. For example what happens when I press a button on keyboard. The OS interprets it and then what changes happen in the flip-flops. How is an operating system written? If it is written using some programming language, then how is that interpreter written. At some point it has to come down to the hardware, right? I know to program in c, c++ and java. But after all these years I am still not sure about what is happening inside. I would be grateful to anyone who points me to to a link or a video that explains this to the deep.

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• Take Camera Phone Macro Photos with a Cheap Laser Pointer Lens

  - by Jason Fitzpatrick

  Inside those cheap laser pointers you see in the grocery store checkout line there’s a handy little plastic lens that, when slapped on your phone’s camera, makes it easy to take macro photographs. In this tutorial, they take the lens from a laser point and secure it using tape and a bobby pin. An alternative method to achieve the same end (and with a higher quality lens) is to dismantle a CD/DVD drive to source the lens and use painter’s tape to hold the lens in place–this is the technique I used several years ago, check out the tutorial video here. Laser Pointer Macro Lens [via Apartment Therapy] How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It

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• 12.04 sound keeps auto-muting when idle

  - by fali

  I just installed 12.04 on an HP8510W. Everything works fine except for one weird behavior which I have noticed. When ever there is no audio playing, the audio mute indicator on the laptop is on. As soon as I start playing a you tube video the mute indicator turns off and I get sound. Here is my pulse audio output which says that the sink is suspended because it is idle: Welcome to PulseAudio! Use "help" for usage information. list-sinks 1 sink(s) available. index: 0 name: <alsa_output.pci-0000_00_1b.0.analog-stereo> driver: <module-alsa-card.c> flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY state: SUSPENDED suspend cause: IDLE I tried running alsamixer, but I don't see the auto-mute option.

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• Google Rolls Out iPad-optimized YouTube App

  - by Jason Fitzpatrick

  There’s no need to use the lower-resolution iPhone app or the mobile website to access YouTube on the iPad any longer–Google’s brand new iPad/iPhone 5 optimized app is totally redesigned to take advantage of the devices’ higher resolution screens. In addition to a redesigned interface the new app also sports improved video playback, VoiceOver support, AirPlay support, and more. Hit up the link below to download a free copy from the AppStore. YouTube [via The Official YouTube Blog] Our Geek Trivia App for Windows 8 is Now Available Everywhere How To Boot Your Android Phone or Tablet Into Safe Mode HTG Explains: Does Your Android Phone Need an Antivirus?

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• Problem with the screen resolution on 12.04

  - by sveinn

  I just installed Ubuntu on my laptop. The screen resolution is stuck in 1024x768. The screen is made for 1280x800. When I run xrandr I get: xrandr: Failed to get size of gamma for output default Screen 0: minimum 800 x 600, current 1024 x 768, maximum 1024 x 768 default connected 1024x768+0+0 0mm x 0mm 1024x768 61.0* 800x600 61.0 1280x800 isn't offered and I get gamma size error. I was going to look into the Xorg.conf file but I couldn't locate it. 1280x800 was displayed in Windows 7 and I think it is being displayed in Grub before Ubuntu starts also. Here are some details about my computer: CPU: Intel atom D2500 1.86GHz Chipset: Intel 945GSE+ICH7M LCD: 14" TFT 16:9 Resolution ratio: 1280*800 Video Card: Intel integrated GMA950 Does anyone know how to fix this?

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• Reader Poll: Are You Switching to Internet Explorer 9?

  - by Jason Fitzpatrick

  The recent release of Internet Explorer 9 polished up the IE line with a new interface, hardware acceleration, and more. Is enough to convince you to switch? Yesterday we gave you a full run down of the Internet Explorer 9 release and highlighted the major improvements including: a totally new interface that’s even more streamlined than that of Google Chrome, direct access to your video card for super fast acceleration, customizable menus for pinned sites, HTML 5 support, and a combined address and search bar, among other improvements. Is it enough to sway you? Cast your vote in the poll below and then sound off in the comments. How-To Geek Polls require Javascript. Please Click Here to View the Poll. How to Create an Easy Pixel Art Avatar in Photoshop or GIMPInternet Explorer 9 Released: Here’s What You Need To KnowHTG Explains: How Does Email Work?

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• Chrome OS : nouvelle mise à jour et ajout de la bêta de Chrome 10 dans l'OS orienté Cloud de Google

  Chrome OS : mise à jour Et ajout de la bêta de Chrome 10 Google vient d'effectuer une mise à jour de la bêta de son système d'exploitation Chrome OS avec le port de la bêta de son navigateur Chrome 10 publié il y a de cela quelques semaines. Plusieurs fonctionnalités de Chrome OS ont été améliorées parmi lesquelles la 3G (activation du modem et connexion), le WI-FI, Gtalk (pour les vidéo-conférences) ou la mise à jour automatique du moteur et amélioration du débogage ; A noter que des problèmes important de gestion des Trackpads (système qui remplace les souris sur les PC portables) ont été réglé. Ce...

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• How to test 3d acceleration?

  - by HappyDeveloper

  I want to install and test 3d acceleration in Ubuntu 12. I have read these pages: https://help.ubuntu.com/community/RadeonDriver https://wiki.ubuntu.com/X/Troubleshooting/VideoDriverDetection?action=show&redirect=X%2FTroubleshooting%2FFglrxInteferesWithRadeonDriver#Problem:_Need_to_purge_-fglrx I think I have installed it correctly, but I don't know how to test it. I tried to play minecraft in the browser, but I got a black screen. It may be a java problem too, so I need to troubleshoot. So how can I test my video card and drivers?

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• Is there an easy way to (temporarily) disable the display timeout?

  - by Izzy

  In KDE 3.5 there was the powermanager plugin for the kicker panel, where one could easily switch between different profiles. So normally, I want the display to go to sleep after, say, 10 minutes of user inactivity. But when I watch a video, this should not happen. I know I could go via the KDE launcher, settings, powermanager, and change the setting. But this is too complicated for daily use. I also know there are those activities. But I don't want to change background etc., just the display timeout. Furthermore, when I tried this, many of the open apps simply crashed and got restarted. I simply don't like this approach. Preferably, it would be something to plug-in to the panel, which opens a menu to select the profile -- as it was with KDE 3.5. Is there a similar solution I missed?

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• First Typemock Academy - 4 days from now

  This April 27th marks a special occasion for Typemock the first Typemock Partner Conference is about to take place in Oslo, Norway. Some special treats are expected (including a very cool after party), and Uncle Bob Martin and myself will be doing a special Q&A video conference live with the attendees as part of it. Attendance is by invite only, but you can see if youre eligible by going to this page and filling out your details. ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Examples of Android Joystick Controls? [on hold]

  - by KRB

  I can't seem to find any well executed code examples for Android joystick controls. Whatever it may be, algorithms, pseudo code, actual code examples, strategies, or anything to assist with the design and implementation of Android joystick controls; I can't seem to find anything decent on the net. What are some well executed examples? More specifically, Pseudo Code Current Examples Idea/Design Functionality Description Controller Hints Related Directly to Android Architecture What kind of classes will I have making this? Will there be only one? How would this be implemented to the game architecture? All things I am thinking about. Cheers! UPDATE I've found this on the subject Joystick Example1, though I am still looking for different examples/resources. Answered my own question with a link to the code of the above video. It's a fantastic start to Android Joystick Controls.

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• Finding the displacment of a robot [closed]

  - by Jordan Brown

  I'm building a quadruped (4 legs 3 DOF) for my major work in electronics at high school. I need to know the displacement of the robot and I can't use an encoding wheel. I've done my research and I found a system where I use an accelerometer, gyroscope and a magnetometer to determine the displacement but I'm not sure how to code it. I'm using Arduino and will use compatible sensors. I would like to be able to implement something similar to this video which demonstrates the principles evaluated in this paper. I don't need to map the data on a screen, just be able to read its displacement from its last recorded position. EG. (Read Position) --- (Do "stuff") --- (Read Position) --- (Calculate displacement caused by "stuff")

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• Fix hibernate on Thinkpad X60 with 12.04 Precise Pangolin

  - by ddaa

  I own a ThinkPad X60, hibernate used to work on 10.04 Lucid Lynx, but no longer works correctly on 12.04. I am aware of how to enable hibernate in Power Manager. The problem here is, in the default configuration, pm-hibernate works, but the system fails to resume correctly. There is no video glitch, black screen or other. The resume process just freezes on the Ubuntu splash boot after a few seconds of disk activity. Is there a way to fix the system configuration so hibernates works again?

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• How to Use Google Chrome as Your Default PDF Reader (the Easy Way)

  - by The Geek

  If you’re anything like 99% of everybody, you have some sort of PDF viewing software installed on your PC—but did you realize that you can use Google Chrome to view PDFs from your PC? It’s easy! We’re showing off how to do this in Windows, but theoretically it would work for OS X or Linux as well. If you’ve tried it, let us know in the comments Latest Features How-To Geek ETC How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Final Man vs. Machine Round of Jeopardy Unfolds; Watson Dominates The Legend of Zelda – 1980s High School Style [Video] Suspended Sentence is a Free Cross-Platform Point and Click Game Build a Batman-Style Hidden Bust Switch Make Your Clock Creates a Custom Clock for your Android Homescreen Download the Anime Angels Theme for Windows 7

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• Are Intel HD 4000 graphics supported on Ubuntu 10.04 LTS?

  - by user1118764

  I have an intel Core i7-3700 system with Intel HD 4000 integrated graphics with a dual monitor setup (1 connected via VGA, the other via DVI) on Ubuntu 10.04 LTS 64bit. I'm trying to get my monitors correctly detected. Right now, in only 1 unknown monitor is detected with a max resolution of 1280x1024, which is lower than my main monitor connected to DVI. Also, the desktop is mirrored rather than extended. I've previously managed to get a Core i5-2400 system with Intel HD 3000 integrated graphics with the same dual monitor setup and Ubuntu 10.04 LTS 64bit to work using the glasen ppa drivers, but this time, after installing them following the instructions How do I install the Intel HD 3000 video driver? but it doesn't seem to work. Does the Intel HD 4000 require a different driver from the 3000? If so, where can I get it?

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• Online Learning Library free BPM training for everybody partners, customers and freelancer!

  - by JuergenKress

  BPM Product Library - Special Topics Tab A portal to free resources to help you learn about Oracle BPM Employee Onboarding Process Accelerator Demo All organizations hire new employees, and helping new hires become productive immediately is important for the organization’s ROI and for the individual’s motivation as well. To do that, an organization needs to have a process in place to help determine what services the new hire needs, and to track that all of the activities needed to prepare for the new hire are performed on time. This video demonstrates how the Oracle BPM Employee Onboarding Process Accelerator helps ensure that new hires hit the ground running from their first day on the job SOA & BPM Partner Community For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Facebook Wiki Technorati Tags: BPM training,BPM education,process accelerator,SOA Community,Oracle SOA,Oracle BPM,Community,OPN,Jürgen Kress

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• The #OOW Party May Over...

  - by user462779

  ...but there's no reason why we can't look forward to the next one! It's going to take all week for me to catch up on last week's neglected email, sort through the freshly-collected business cards, and generally make sense of the mad dash that is Oracle OpenWorld. So I've been playing this amazing video (produced by Lozano Productions) to remind me of the last business/IT conference marathon I survived: Collaborate 2012. It was an amazing event where we officially launched the new design of Profit and enjoyed a drink with some of our closest friends--Oracle partners, customers, and peers. Many thanks to those who came out to celebrate and who continue to help make Profit a success. It was a great time that resulted in a lot of great new work and new relationships. So I'm taking a time out to remember that the hard work is worth it. See you in Denver next year!

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• Stuck on Ubuntu Startup Screen

  - by Pietro

  Since yesterday, my system won't get past the startup screen (the Ubuntu logo with the blinking red dots). I left it for over an hour and didn't get the login screen. It was working normally before that and I don't recall any changes (no new software, etc). I can login through the terminal with ALT+F1 but I don't know what to do to get the graphic mode. The command startx fails. I'm running Ubuntu 12.10 64 bits on a Core I5 with Intel motherboard. No video card or sound card.

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• choppy streaming audio

  - by user88503

  I could use some help troubleshooting choppy streaming audio. The problem is jerky playback regardless of audio or video with audio. Both Chromium and Firefox have the problem, however files played directly on the machine with Rhythmbox sound just fine. I'm running 12.04 LTS on a C2D T9300. Most of the audio problems others ask about seem to be hardware related, so the following information might be relevant. sudo lshw -c multimedia *-multimedia description: Audio device product: 82801H (ICH8 Family) HD Audio Controller vendor: Intel Corporation physical id: 1b bus info: pci@0000:00:1b.0 version: 03 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=snd_hda_intel latency=0 resources: irq:48 memory:f8400000-f8403fff

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• Monitor not recognised after apt-get upgrade on 11.10 - maximum 1024x768 resolution

  - by Josh

  I did an apt-get upgrade through update manager on 11.10. After restarting my VGA monitor is no longer recognised and I can only get a maximum of 1024x768 on a 1440x900 monitor. I can't find xorg.conf so I am pretty lost! xrandr output: Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 VGA-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0* 800x600 60.3 56.2 848x480 60.0 640x480 59.9 DVI-0 disconnected (normal left inverted right x axis y axis) S-video disconnected (normal left inverted right x axis y axis)

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• How can I get my wireless webcam to work?

  - by hellocatfood

  I recently bought this wireless webcam. I'm having trouble getting it to work on Ubuntu 11.04. I ran lsusb and got the folowing information about the device Bus 006 Device 003: ID 0416:a91a Winbond Electronics Corp. I did a Google serach for teh device ID and this website informs me that it matches the LogiLink Wireless Webcam (so Maplin probably just rebranded this!). What this website states is that this device should work, which it doesn't. The problem I'm facing is that I don't get any actual video being streamed or shown. The built in microphone works and, when running Cheese, when I press the camera button on the webcam itself the software recognises that the button is pressed. On that note, when running cheese from the terminal with this webcam attached I get the following error libv4l2: error getting pixformat: Invalid argument libv4l2: error setting pixformat: Input/output error Any help is appreciated

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• Introducing the MVC Music Store - MVC 2 Sample Application and Tutorial

  A couple weeks ago we did a soft release of a new ASP.NET MVC 2 Tutorial and Sample Application Ive been working on over the past few months, the MVC Music Store. The source code and an 80 page tutorial are available on CodePlex. Im also working on a video tutorial series for the ASP.NET website which will walk through building the application. After that, its time to talk about a feature length film and a worldwide MVC Music Store On Ice tour, but the plans arent completely set just yet. ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Can I copy large files faster without using the file cache?

  - by Veazer

  After adding the preload package, my applications seem to speed up but if I copy a large file, the file cache grows by more than double the size of the file. By transferring a single 3-4 GB virtualbox image or video file to an external drive, this huge cache seems to remove all the preloaded applications from memory, leading to increased load times and general performance drops. Is there a way to copy large, multi-gigabyte files without caching them (i.e. bypassing the file cache)? Or a way to whitelist or blacklist specific folders from being cached?

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• Le navigateur Opera arrive sur les tablettes, la première démonstration en sera faite au CES

  Le navigateur Opera arrive sur les tablettes, la première démonstration en sera faite au CES C'est désormais officiel, Opera Software va présenter son navigateur pour tablettes dans quelques jours. Il y aura donc bien une version spécifique du logiciel pour ces appareils en pleine expansion. La première démonstration publique de cette mouture se fera en direct du CES de Las Vegas, dont le coup d'envoi sera donné le 6 janvier 2011. En attendant, une première mise-en-bouche est disponible en formant vidéo. On y voit un navigateur en fonction sur un tablet PC de la taille d'un gros smartphone et dont le modèle n'est pas identifié. Le logiciel tel qu'il y apparaît laisse présager une utilisation fluide. Ses capacités de ...

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• Anti-depressant and programming: does it reduce your thinking and focusing abilities ?

  - by user12358

  I wanted to ask your opinion on anti-depressants, since I took them daily for 3 years now, but I can't be sure if I'm less perfomant with them or without, since I never withdrawed. I'm still at school at the age of 25, still having some motivation problems (for example I can't get used to do something at school if I don't think it will teach me something), but I'm quite motivated to work in the video-game field, since I have some personnal projects in mind. I know C++ programming etc, I'm still learning techniques, but do you think I should try more to do my project instead of just following the work I'm assigned to ? Have you had experience with depression or anti-depressants ? How did it affect your work ? Do you think that being depressed or half-depressed can improve creativity ? Do you feel it has affected the way you end up writing your algorithms ? EDITED

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