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  • Ubuntu 14.04 Fatal Exception

    - by user286534
    I use Ubuntu 14.04, 64-bit. I installed Virtualbox and was testing another Linux OS (Deepin). My system froze and I could not get to a TTY session to reboot. I had to do a hard restart and when Ubuntu restarted I got various error codes one of which was "kernel panic - fatal exception in interrupt" Booting to Advance mode and attempting repairs did not work (fsck, grub repair, etc) I reinstalled Ubuntu and chose the option to keep my files intact. I can now access my system but many programs I have installed do not work. My question is; I have a Deja-Dup backup (but only of my Home directory), is it better to restore my backup files or do I have to reinstall all of my programs? The weird thing is, the programs I verified using the Software Center to see if they were installed are checked as installed, but won't appear in Dash.

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  • Connect divs with (non-straight) lines [migrated]

    - by Snailer
    I'd like to develop my site with a layout that looks somewhat like houses with connected plumbing, or multiple computers connected to a network. Basically, the will be boxes floating in space, with lines connecting some of the boxes. I'd like these lines to have some turns in them as well (just simple 90 degree corners) rather than just a straight line. My question is what is the best way to achieve this, and perhaps a small example. My thoughts were to use: PHP and CSS: I could create a background grid and then, with some complicated algorithms, draw paths using the grid's borders. This would be more dynamic, but I'm not sure I can plot the math all by myself. just CSS: Perhaps this is as simple as making some pre-drawn lines like L-shapes and T-junctions, then just placing and scaling them. But I don't believe there's a way to scale an image by slicing it.. so the line width would be scaled and thus each image would look different. Any thoughts?

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  • Need help migrating from Wubi

    - by neilh
    I know this question has been asked, but I am looking for specific help with my partition selection. I want to migrate my install from wubi to be a dual boot. When I installed it I choose a small, partition, around 30GB. I am following these instructions: https://help.ubuntu.com/community/MigrateWubi I see sda4 matches that size, but has mount point as '/host', am I okay to use this one? EDIT: Here is a screenshot of my partitions. http://i.imgur.com/ozPe0.png My windows partition is actually not there, that is down as sdb1, so safely out of the way? I can confirm sda4 is the location of the 'virtual partition' and is an otherwise, unused 26GB partition. It's also where I would like to migrate to a full install to.

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  • Nouvelle étude de la répartition des systèmes d'exploitation mobiles, un graphique s'y penche par constructeur plutôt que par OS

    Nouvelle étude de la répartition des systèmes d'exploitation mobiles, un graphique s'y penche par constructeur plutôt que par OS C'est une question qui fait rage depuis toujours et à laquelle il est difficile d'apporter LA réponse, d'autant plus que les chiffres diffèrent suivant s'ils proviennent des éditeurs de systèmes d'exploitation ou bien des fabriquants de terminaux mobiles. Saura-t-on un jour avec certitude quel OS mobile domine le marché ? Un cabinet d'analystes tente d'apporter des statistiques claires et réalistes à ce sujet. En effet, quand il s'agit de l'observation des parts de marché par les utilisateurs de systèmes, c'est Android qui sort vainqueur (à 29% devant RIM et Apple qui son ex-aequo à 27 %).

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  • How to improve battery life on a HP Pavilion dv6?

    - by user1793249
    I apologise if this question is too similar to the numerous others already asked, but I'm a beginner and I really need your help. So...I've installed Ubuntu 12.10 a few days ago and I have only been able to get up to one hour of battery life. When running Windows 7 I get up to 3-4 hours. My screen is ultra bright, even tough the screen brightness is set to the minimum (I installed xcalib to dim my screen, but it doesn't improve the battery life) I read about Jupiter and installed it, but it doesn't have a noticeable effect. Thanks for your time.

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  • Dual screens with one workspace on each?

    - by user2413
    Hi all, I have a dual screen, compiz-fusion and i don't have a NVDIA/ATI graphic card and i use ubuntu 10.10. i currently use the two monitors: the desktop is stretched across monitors and i can drag an application across monitors. My question follows: i would like to use the left monitor only to display workspace1 and the right monitor to display workspace2. Is this possible ? If yes how (I've found mention of dualXscreen on this board, but i can't find it in the compizConfig menus). Best,

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  • Une Fondation NetBeans pour assurer l'avenir de l'EDI et générer des revenus ? C'est ce que propose

    Une Fondation NetBeans pour assurer l'avenir de l'EDI Et générer des revenus ? C'est ce que propose un membre de l'équipe technique Geertjan Wielenga (écrivain technique de l'équipe NetBeans) vient de faire part d'une réflexion personnelle pour l'avenir de la la plateforme. Au centre de cette réflexion ? qu'il expose sur son blog ? se trouve la question de savoir comme obtenir suffisamment de fonds pour faire évoluer le projet. Avec l'engouement des développeurs pour NetBeans, l'auteur réfléchie à la manière de faire évoluer la communauté et la plateforme elle même. Comme on peut le constater ic...

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  • How to create a map-like (clouds) texture [duplicate]

    - by user16547
    This question already has an answer here: How do you generate tileable Perlin noise? 9 answers If you place a map of the world on a sphere, it will look like the image is continuous. Basically the left end of the image is sort of a continuation of the right end. You won't be able to see any cuts. I'm trying to create a clouds texture to add to my planet such that it will seem it has clouds. I managed to create the clouds in GIMP, however, I can't figure out how to make sure the left end of my image is a smooth continuation of the right end. For example if you were to map the below image to your sphere (I removed transparency to make it clearer), there would be a very obvious transition from the right end of the image back to the left end on your sphere. How would I create a texture such that I get rid of that? Sorry for my lack of terminology.

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  • Search and Replace in MVC

    - by danip
    What would be a good MVC/OOP/GRASP/SOLID structure for a search/replace functionality. Methods: search/searchNext/replace/replaceAll. I'm interested only in the PHP arhitecture and how a professional developer would implement this in it's OWN FRAMEWORK. What names would you use for the classes? What subfolders would you used in your MODEL folder? How would you connect the MODELS/CONTROLLER? This is just a arhitecture question to understand better the principles of good OOP in practice. My current implementation is very simplistic using a service model: /controller/SearchReplaceController.php /models/services/SearchReplaceService.php The problem with this is I know I'm breaking SRP in the service but I found this somehow acceptable. Also creating a service does not feel like the best solution for this.

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  • How to deal with OOP design problems in interviews?

    - by haps10
    This is a question where I seek guidance from fellow/senior developers to get into my dream company - it's a pioneer in OOP and Agile. I've already failed once to clear an interview. One part I feel most challenging is to come up with a proper Object Oriented design(classes, interfaces, methods, interactions etc.) in a very short time for certain situations like Pacman, Game Of Life and so on. As the problems are unprecedented ones - my approach is mostly to try different things and then make decisions - which they feel is not clear and not what they expect from a developer with 5+ years of experience. I've already studied a few books on patterns, OOP - it didn't help me much and I think it'll take a bit more than that. Could some one please guide on what specifically shall I practice so that I can do better at design problems as above. I want to refine my approach and have a better thought process.

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  • How to debug wifi connection?

    - by mmb
    I am using Ubuntu's Network Manager to connect to a local wifi router. My problem is, that it often disconnects without any visible reason (router is on, internet connection seems to be working, wifi diodes are blinking). I mostly have to disable wifi from Network Manager, enable it again to get wifi connecting again. Plus I am often experiencing Network Manager trying to connect to my wifi, trying several times but then giving up. I even tried an external usb-wifi card, but with the very same results. My question is: How can I debug this? Which logs should I read to see what is really happening when all of these errors occur - so I can post them here and see how to proceed?

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  • Start Programming embedded devices

    - by user1611753
    I am good at C programming and also I am good at embedded devices. I have setup an embedded circuit myself using the basic arduino and by interfacing some devices with it. But the main problem is that I do not know where and how to start programming this device with the known C programming skills. The device has an on chip boot loader. By "start programming", I mean how to bring the embedded device into my programming and stuff. I know program starts from a main() and an infinite loop makes the application run. But the real question is, how to start this all and integrate the hardware with the software which I write. Kindly help with this. Thanks for the help in advance.

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  • "Never do in code what you can get the SQL server to do well for you" - Is this a recipe for a bad design?

    - by PhonicUK
    It's an idea I've heard repeated in a handful of places. Some more or less acknowledging that once trying to solve a problem purely in SQL exceeds a certain level of complexity you should indeed be handling it in code. The logic behind the idea is that for the large majority of cases, the database engine will do a better job at finding the most efficient way of completing your task than you could in code. Especially when it comes to things like making the results conditional on operations performed on the data. Arguably with modern engines effectively JIT'ing + caching the compiled version of your query it'd make sense on the surface. The question is whether or not leveraging your database engine in this way is inherently bad design practice (and why). The lines become blurred further when all the logic exists inside the database and you're just hitting it via an ORM.

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  • How to change color of the frame of a maximizing window

    - by SteliosSk
    Though I have read and tried some advises regarding the change of colors in a theme, I found no answer regarding my question, which is: When I drag a window to the left (or right or up) side of the screen an orange frame shows up, indicating the area that the window will occupy. This frame is in orange. Can you please inform me how can I change this color to blueish, to match my theme? At this point, I would like to inform you that Zorin OS has this blueish frame instead of orange, but I do not know where this color comes from.

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  • How to manage enemy deplacement and shoot in a shmup?

    - by whatever
    I'm wondering what is the best (or at least a good) way of managing enemies in a shoot-em-up. Basically, what I'd do would be a class that manages displaying and updating positions of all the enemies. But how to create good deplacements for enemies? A list of where-to-go points? gravitating around some fixed points (with ponderation, distance evaluation etc.)? Same question for the shoot patterns? Can you please put me on a track?

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  • "Mega Menus" for SEO [duplicate]

    - by Thought Space Designs
    This question already has an answer here: How do I handle having to many links on a webpage because of my menu 4 answers I'm using the term "Mega Menus" loosely here. I'm redesigning my WordPress site (it's going to be responsive), and as part of the redesign, I was debating incorporating some sort of descriptive menu setup. For example, normal navigation drop down menus come in the form of unordered lists of links like so: <nav> <ul> <li> <a href="#">Link1</a> </li> <li> <a href="#">Link2</a> </li> <li> <a href="#">Link3</a> <ul> <li> <a href="#">Sub Link1</a> </li> <li> <a href="#">Sub Link2</a> </li> <li> <a href="#">Sub Link3</a> </li> </ul> </li> <li> <a href="#">Link4</a> </li> </ul> </nav> What I'm looking to do is build my drop down menus with more information than your standard menu. For example, I have a top level link named "Team", and under that link, I want to make a large drop down that contains head shots, headers (in the form of styled p tags) and brief (<100 words) descriptions of each team member (only 2 currently). I want to accompany this with a "Read More" link that takes you to their actual team page. This is just one example, of course, and the other top level links would also have descriptive drop downs in the same fashion. On mobile, I was planning on hiding the "mega menu", and delivering a standard unordered list of links. Here's what I was thinking for overall structure and syntax: <nav> <ul> <li> <a href="#">Home</a> </li> <li> <a href="#">About</a> </li> <li> <a href="#">Team</a> <ul> <!-- DESKTOP --> <li class="mega-menu row"> <a class="col-sm-6" href="#"> <div class="row"> <div class="col-sm-4"> <img src="#" alt="Team Member 1" /> </div> <div class="col-sm-8"> <p class="header">Team Member 1</p> <p>Short description goes here.</p> </div> </div> </a> <a class="col-sm-6" href="#"> <!-- OTHER TEAM MEMBER INFO --> </a> </li> <!-- END DESKTOP --> <!-- MOBILE --> <li> <a href="#">Team Member 1</a> </li> <li> <a href="#">Team Member 2</a> </li> <!-- END MOBILE --> </ul> </li> <li> <a href="#">Contact</a> </li> </ul> </nav> Can anybody think of any potential SEO ramifications of doing this? I'm not going to be loading these menus full of links, so it shouldn't hurt page rank, but what are the effects of having a good bit of text and maybe even forms within nav elements? Is there such a thing as overloading nav with HTML? EDIT: Here's an example of what the menu would look like rendered on desktop. I'm currently hovering the "Team" menu, but you can't see because my mouse went away when I took the screenshot. EDIT 2: This question is not a duplicate. I'm not going to have "too many" links in my menus. I'm wondering how having images and text inside of header navigation will affect my menus. Also, I don't just want "yes, this is bad" answers. Please cite your sources and be specific with reasoning.

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  • Using GDI+ vs HTML page

    - by Umesha MS
    I am working on an application which is UI intensive (i.e. we need to customize all the control to look different). For this is I planned to use GDI+ in win32. But one of the suggestion form our team member is, Instead of using GDI+ he asked me to have a web browser control, in that he asked me to display local html.That html page contains customized controls. Form his suggestion I created a web control and used some UI intensive local html pages. That looks good. But my question is, is it is a good idea to use web control to solve this?

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  • Setting folder permission so it isn't deletable, but everything else is allowed

    - by user10324
    I want to set permissions to a folder such that, when I'm normally logged in (meaning not as root), this folder isn't deletable, but I can still change the name of this folder and move in around in my system ? IS this possible and if yes, how to set the permission ? I already tried different combinations for the permissions but couldn't figure out how to do it. Also (side question), if some folder hast some permission set and I copy this folder, along with its contents (assuming I am allowed to read it) to a memory, are these permission preserved ? I suppose not, since under Windows I could delete the folder on the stick, even if under Ubuntu it isn't allowed to delete it...

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  • Managing different utility classes between engine and libraries

    - by hayer
    I'm currently in updating some engine code (which does not work, so it is more like creating a engine). I've decided to swap over to SFML (instead of my own crappy renderer, window manager, and audio), Box2D (since I need physics, but have none), and some small utilities I've built myself. The problem is that each of the project mentioned over use different types for things like Vector2, etc. So to the question: is it a good idea to replace Box2D and SFML vectors with my own vector class (which is one of my better implementations)? My idea then was to have a separate .lib with all my classes that should be shared between all the projects in the solution.

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  • best way of rendering more 3D models in three.js that not slow down page?

    - by GDevLearner
    I am in the way of creating a 3D web game using threeJS library. This is a multi-player game that players are 3D human models in game, and I need to add a human 3D model for each player that enters the game. Additionally, I want to animate the humans while they walking, but the problem, here is that adding a 3D model and animating that for each player will slow down the game or maybe cause the browser to crash. question: what is the better way of showing and animating the player's models that will not slow down the game?

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  • Implement an FTP server (no threads) - how to start?

    - by ironicaldiction
    As a semester project, I have the following specification: Write a simple single threaded ftp server. The ftp server is configurable from a configuration file. The config allows to set the interface (where the server listens), the roots of the served content, transfer log, and database of users and its passwords. The server allows to create a virtual filesystem. By a virtual filesystem, we mean a mapping of a served directory to the real directory on the filesystem. For example, the client tree will look like: /home/user1 maps to /mnt/x/home/user1 /www maps to /var/cache/www /home/user_list.txt maps to /var/ftpclient/user_list.txt The user will see /home/user1 directory and /www directory and the file /home/user_list.txt The course is in C++. The projects to this point have provided a lot of structure, such as a class header file to get you started on the program. My question is this: how can I get started on what seems like quite a massive project (I have 3 weeks to return a working implementation)?

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  • Can Questions be Reopened After They've Been Closed by Some Self Appointed Gestapo Moderators? [migrated]

    - by GenericJam
    This is obviously begging to be shut down right away and have all my privileges revoked or whatever but why do some people feel they have the right to shut down legitimate discussion? Who decides what is a "real" question or topic of interest? If you don't think it's valid, just click somewhere else but it is really getting to me on this site and StackOverflow how many really useful questions are shut down because people are asking opinions not textbook facts. Questions like this one are genuinely useful. Don't shut them down. You are making this site less useful for everyone else. Do people get their kicks by just wandering around the site closing questions? It seems many of the same names appear on the "closed down" box. Just go to a different page, don't ruin everyone else's education the way they choose it.

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  • Application of LGPL license on a simple algorithm

    - by georgesl
    The "scope" of the GNU license is troubling me : I know it has been answered many times ( here, here, ... ) but shouldn't we take into consideration the complexity and originality of a code before using GPL license ? I explain : I'm working on a pet project using the DTW algorithm that I have written in C using the pseudo-code given on the wikipedia page . At one point I decided to change it for a C++ implementation ( just for hone my c++ skill ) . After doing so, I've looked for an existing implementation on the web, to compare the "cleanliness" of it, and I found this one : Vectored DTW implementation, which is part of limproved, a C++ library licensed under GPL v3 . Personnally, I don't mind the GNU license because it is a personnal project, which will never led to any kind of commercial purpose, but I wonder if this implementation can abide a company using it to open their code ( and other FOSS permissions ). Theoretically, I think it can ( I may be wrong :p ), but the algorithm in question is so simple (and old) that it should not.

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  • XNA + Windows Forms: How make them work together without making the trick of the custom GraphicsDeviceControl?

    - by Renann
    What I've found is a solution where you have to code a custom GraphicsDeviceControl to put inside the form (the well known tutorial from the APPHub), but that's not what I'm searching for. I would like to say that before start to right my question here, I "googled" a lot and I saw some questions here, but I couldn't find what I'm looking for. I would like to have the Draw/Update loops completly managed by XNAFrameWork (with XNA project and so), and not by a custom component. I hope you understand what I asked. Thanks in advance. Edit What's the most important thing for me and wasn't shown in the tutorial of APPHub is: where I have to put the input handling? That's one the problems that wasn't covered by the tutorial.

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  • How to begin serious game development (in C++) [closed]

    - by Rondogiannis Aristophanes
    I would like to start developing games. I have tried before Game Maker 8, which was a very easy way to start creating games, if you were new in game development. Then, I tried Unity 3D, which was a much more serious and complete tool to create computer-games, and required some experience. And now, I would like to start creating games, and don't use any special environment or developer, but just code (in C++ preferably). So, here is my question: from where should I begin, if I would like to start programming games? Thanks in advance. Note: I work in ubuntu 10.04, I can also use windows 7, but I prefer ubuntu.

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