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• /dev/sda2 contains a filesystem with error after partitioning

  - by Private

  I just wanted to create a separate home partition on my Ubuntu 12.10 system. I booted the liveDVD, resized the sda2 partition (28gb of data resized to 30gb based on MiB [originally on a 100gb partition]) and made a new ext4 partition for the home folder. The drive is an SSD drive. I had changed the settings (noatime etc.) for SSD succesfully a week ago. On reboot I get the following error: /dev/sda2 contains a filesystem with errors Inode 74669 has an invalid extent node (blk 6881289) fsd / [953] terminated with status 4 What would you suggest me to do? If I can avoid a clean install that would save me a lot of time (I had just done all the config). I was following this HOWTO, but I did not get to changing any of the files or configs other than those with gparted. I have a (two-week old) SSD Samsung drive which is functioning just fine (other specs see bottom of this question). Other specs: 64bit 12.10, i7, 8gb ram, nvidia.

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• Have you worked with a well designed application?

  - by Vilx-

  Inspired by this question, I started wondering - is there or has there ever been such a thing as a "well designed application"? One where the architecture would be perfect and no refactoring would ever be needed; code would be easy to read and understand even for someone new to the project; changes could be done with a 100% certainty that they won't break anything; etc? I must admit that whatever codebases I've worked with, they've all been more or less a mess. Even code that I start myself only stays organized at the start, and then slowly deteriorates as the time passes. I'm even starting to accept this as part of life and can't figure out whether I should be worried about that or not. So... is there such a thing as a "well designed application"? Or is all our code so shitty that there isn't even a point in trying to make it better, because it will never be good anyway?

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• Is it a good idea to make a game for one aspect ratio and arbitrary screen resolution?

  - by Mimars

  After several very small games I have decided to make something more standalone (2D) and playable. However, I have met the problem of every game that is going to be played in more screen resolutions. Basically, after some research I see that there are several solutions. This seems to be the simplest one: Let's say I define a constant aspect ratio for the game (16:9) and the whole game will be created for a resolution 1680 x 1050. The game will be rendered in this resolution and then I will be able to scale the render to match the player's display resolution. Therefore the game might be playable on almost any resolution, while it would keep the aspect ratio. So, if the game was run on 4:3 display, the top and the bottom of the display would be filled with black color. It seems easy, but my question is - Is this a good approach for a simple game? The game will be simple, but I want to maintain high quality.

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• Should I choose 10.04 LTS or 10.10?

  - by torbengb

  I'm new to Ubuntu (and Linux) but I want to give it a go. I've spent a few evenings trying to get 10.10 to run but I think my nVidia 8400 GS is causing trouble; only recovery mode with failsafeX gets me to the desktop (low-res but seems to be fully functional otherwise). Given that the xx.04 vesions are long-term support, I'm wondering whether it would be smarter for me to use that. I don't need to be on the cutting edge - I prefer to have a system that just works, long-term. Later I hope to move my media center and wife's netbook over too. Question: Why should I (not?) choose the 10.04 LTS version over the newest 10.10 version?

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• How do I implement input and movement with characters that get into vehicles?

  - by Xkynar

  I'm making a game similar to GTA2. When the player enters the vehicle, what happens in terms of logic? Does the player becomes the vehicle? Does the vehicle override the player movement? The main question is how should it look at a vehicle? I want to understand if the player becomes the car or if the player has a "motion state" like "driving, walking, flying" depending on what he is doing in a moment, I know there are tons of ways to implement vehicles in a game.

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• Only sdb shows up when installing 12.04 on new Dell inspiron 14z

  - by Jan Korpegård

  I got my brand new Dell Inspiron 14z yesterday, but failed to install Ubuntu. I can boot from a USB stick, and it works well. When trying to install, I confirm that the laptop is connected to the internet etc (as in the 2nd picture in the installation guide: How do I install Ubuntu?). When pressing "Continue" I do not get the question on installation type (alongside/replace/something else). Instead I get a window where I can select partitions: // Picture removed due to low reputation... The problem is that I can only select sdb in the drop drop down box, and I can do do nothing with sdb (like adding partitions etc). The main disk (sda) is partitioned using Gparted the following way: // Picture removed due to low reputation As far as I understand from other threads on askubuntu, this should work... What can I do to install Ubuntu alongside with Windows 7?

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• How can I undo this key mapping?

  - by user273872

  First of all sorry my punctuation will be bad. its hard to type when keys are not doing what you expect. Eg it keeps scaring the **** out of me by taking a screen shot when I push the up arrow lolol So anyways, I broke a key on my keyboard and used xkeycaps to remap it to an unused key which worked. But then I realized it screwed up other keys... I think this is the program I used http://www.jwz.org/xkeycaps/man.html And then after doing the modifications I found out how to save them from the second answer in this question How to Map my enter key to a different key down where it says this "When you are happy with your current keymap and want to use it in future X-sessions, run the following command to save it: xmodmap -pke ~/.Xmodmap"

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• Brightness problem NC110 (Samsung)

  - by user40532

  Translated into English Hello everyone. It looks like I'm not the first person to have this problem, but since I'm new in the Ubuntu community, I don't know how to launch the terminal. There you have it; I have a NC110 (Samsung) and I'm not able to tweak the screen's brightness. What are the steps to follow? Original question in French: Bonjour à tous. Apparemment je ne suis pas le seul à avoir ce problème mais je suis tout nouveau dans la communauté ubuntu. Donc je ne sais pas comment accéder à la commande pour entrer les divers codes... Voilà, j'ai un NC110 (samsung) et je n'arrive pas à modifier la puissance de l'éclairage de l'écran. Quelle est la marche à suivre?

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• Using OpenCl to jiggle the Pipe

  - by TOAOGG

  I've got the Idea to use OpenCL to program a simple Renderer. A clear contra is, that this approach won't benefit from the hardware as the functions on the device (I think). Would it be useful to do this in OpenCL..lets say we want to Cull as early as possible so we won't have many per vertex operations. Is it correct, that Culling is done after the Vertex-Shader? For static-vertecies who won't get effected by the shader it could be interesting to cull them before. Another idea would be an deferred renderer. So the main question is: Would it make sense to program a renderer in OpenCL (aside the effort)? The resulting picture would be drawn in OpenGL.

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• How to study for an Informatics Olympiad [on hold]

  - by Cloud

  One of my goals for next year is to participate in the Australian Informatics Olympiad. As far as I'm aware, it is not too different from Informatics Olympiads in other countries. What would be the best way to study for this? What content should I pay particular attention to while learning in Python? I am currently using the book 'Learn Python the hard way', but are there any other books worthy of a mention? This is the link to their site: http://orac.amt.edu.au/aio/ It contains sample questions, so you can get an idea for the structure or nature of the competition. I know this isn't really a specific programming question, but it would be great if someone could share their experience or give some suggestions for me.

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• Is there a debian/ubuntu policy on softlinking things to another location in opt once they're installed?

  - by AbrahamVanHelpsing

  Is there a debian/ubuntu policy on softlinking things to another location in opt once they're installed properly in usr/share or usr/lib? Here's a simple example: Packaging up dnsenum. It's a REALLY simple package (4 files). A perl script, two wordlists, and a readme. So from what I gather: The wordlists should go in usr/share/dnsenum/* The perl script itself would go in usr/lib/dnsenum/ The readme would go in usr/share/doc/dnsenum/ Add a wrapper bash script that goes in bin and just passes arguments to dnsenum.pl. The question is this: If there are various tools that provide wordlists or some other shared resource, is there a policy on linking all the wordlists from different packages in to /opt/wordlists/ ? It seems like the "right" thing to do respecting the directory structure while still making things convenient.

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• How to speak to a computer

  - by SalemSeven

  I am a self taught.. NEW..programmer. The language I chose was Objective-C so I can write for Apple products. I have learned the hard way that Objective-C has a steep learning curve but have forced myself to look at it over and over until I get it. I feel I am completing one major step and that is becoming very comfortable with the syntax and now as I enter the next big step...finding out what is possible with a computer language - I am thinking that all software is just developed within the confines of classes-loops-booleans-IF/OR statements-variables-etc. Is that a true assessment? When thinking of software in my head do I just need to learn to convert it all to arrays-loops/variables/classes - IF/OR statements - etc? Sorry if this question sounds funny but I am just learning how to take the language in my head and talk (what I think is) the language of a computer. Is there a good book or tutorial that helps illustrate how to speak computer speak?

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• pop up html as javascript string instead of hidden div for seo [closed]

  - by user1324762

  Possible Duplicate: How bad is it to use display: none in CSS? I have heard that using display:none or visibility:hidden css properties are not a very good idea for seo purposes. I have about 4 different pop up windows to display and each one has about 20 words inside it. I can create hidden divs. Another option is to store div html elements as javascript string. In this way pop up html elements will be generated from javascript string. This will be still faster than using ajax since the data is static. Is this method absolutely safe for SEO? P.S.: I was just asking about similar question on http://stackoverflow.com/questions/12389075/storing-data-in-javascript-array-for-further-use, but this one is different, it is about static data and about SEO.

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• java or .net need carrer guidance [closed]

  - by s.nigam

  First of all let me thank you all for reading & devoting time for my question. I am developer with around 3.7 years of experience in .net. I recently discussed & visited some of the websites which states that java is better then .net, a I also discussed with some of the experience persons all suggested me to switch to java of course spring, struts etc. As Java developer is being paid high then .net one. I personally think I should go for web services SOAP, XML etc. Kindly help me I am bit confused. Thanks

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• Google indexing pages very slowly [duplicate]

  - by Clark

  This question already has an answer here: Older post not indexed, new post indexed right away? 1 answer Is there anything I can do to speed up the time it takes to index my pages? It's currently indexing them on it's own time I believe which is every 2 - 3 days and when working in music and media I need to have the latest post fairly quickly. My robots.txt file is. User-agent: * Disallow: /wp-admin/ Disallow: /wp-content/ Disallow: /wp-includes/ sitemap: http://vipes.us/sitemapindex.xml If I am understanding this correctly, I would put this URL into Google http://vipes.us/sitemapindex.xml. But in doing so I still only get some of my pages indexed?

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• Abandoment to blame?

  - by Larsenal

  I have a code snippet for an app that users are loading as a 3rd party script on their site. The general sequence is as follows: Site loads "http://www.example.com/foo.js" foo.js does stuff 1 to 2 seconds later, foo.js loads bar.js Now in a perfect world, I'd want to see matching counts for the calls to foo.js and bar.js. However, bar.js loads only about 94% of the time. I'm wondering how much of this discrepancy might be attributable to site abandonment given the fact that bar.js is delayed by 1 or 2 seconds. I posted here instead of StackOverflow since I think it's more a question about what would be typical time on page when users abandon the page.

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• 2-components color model

  - by Cyan

  RGB is the natural color model for OpenGL. But a lot of other color models exist. For example, CMY(K) for printers, YUV for JPEG, the little cousins YCbCr and YCoCg, HSL & HSV from the 70's, and so on. All these models tend to share a common property : they are based on 3 components. Therefore my question is : Does it exist a 2-components color model ? I'm surprised to not find any. I was expecting something along the line of Hue+light could exist. I guess it cannot be as "complete" as a true 3-components color model, but a fine-enough approximation will be good for my usecase. The end objective is to store the 2 components into a single BC5 texture (GL_COMPRESSED_RED_GREEN_RGTC2 in OpenGL). The 3rd component requires a second fetch into a second texture, which hurts performance.

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• Xubuntu: how do I automatically mount external NTFS drive with writes allowed?

  - by user74372

  i would have thought mine was such a common question that there would be a simple solution already built in to xubuntu - but there isnt. i have 2 separate external hard disks and connect them to a usb port at different times - i would like them to be automatically mounted as read/write, but apparently the designers of gnome-volume-manager decided that shouldnt be possible and they are mounted as read-only in fact, i can write new files to them, but cannot then delete the new files i just wrote! is there a workaround? i read somewhere that etc/fstab doesn't apply to removable media, which are mounted by gnome-volume-manager and therefore cannot be unmounted by a user

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• Am I getting paid a reasonable wage for web engineering?

  - by sailtheworld

  I've been doing some research and it looks like most people in my line of work - WEB ENGINEERING/WEB APPLICATION DEVELOPMENT - that get paid hourly, make anywhere from $30-80 an hour for their work. With that said, I have SEVEN years of experience with web development including OOP-PHP, MySQL, jQuery, OOP-JS, interface design, ajax, database architecture, etc. I am also very strong with visual design and workflow - thus, I've made some really high quality interactive interfaces. I also have a lot of experience with Zend Framework, Symfony, Wordpress, Drupal, etc and a really strong portfolio to show for it. Here's the catch: I'm 20 years old, haven't graduated from college yet (I'm doing part time school and ~30 hours a week of web development.) But I've literally been doing web apps since I was 13 years old. So my question is: is $14 an hour a reasonable starting wage for working at a company part time?

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• How to open the terminal? (Mis-configured the profile)

  - by JiminP

  I am quite new to Ubuntu. (I started to use Ubuntu about a year ago, but I don't know how to use things like terminal well. All I used by console was easy things like ls or cd, to use gcc.) Today, I found 'profile' property of the terminal, and I created a new profile. Then, I changed some properties like font color and opacity. Soon, I found something like 'command', and for test, I set that to ls. I closed and re-opened the terminal. However, the terminal terminates right after it appeared. I soon remembered that there was option like 'close right after the command is executed'. Therefore, I can't use Gnome Terminal D: ... I found Konsole at Ubuntu software center, but that's just not my style (especially cursor, its position is little weird...). Question : How to change the profile of Gnome Terminal, without opening it?

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• How to boot into Ubuntu after installing into a pre-installed Windows 8 pc?

  - by xVerified

  I recently just installed Ubuntu 13 from a USB drive. I have/had Windows 8 64 bit on my desktop computer. When I restart and boot my computer, there is not an option that allows me to choose Ubuntu, it goes straight to Windows 8. I understand this is a common issue. However, my main question is, how do I get to even GO INTO Ubuntu after it's installed? I don't mind booting into Windows 8 at first, but how can I even choose to see Ubuntu now that it's installed?

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• What You Said: The First Things to Do After Installing a New OS

  - by Jason Fitzpatrick

  Earlier this week we asked you to share the steps you went through after installing a new operating system. You responded and we rounded up your responses. Our Ask the Readers series gives you, the awesome How-To Geek reader, a chance to share your tips, trick, and technological know-how with your fellow readers right on the front page. Every week we ask a question and every week we round up your tips to share. This week we’re taking a look at your tips and tricks from What’s the First Thing You Do After Installing a New OS.HTG Explains: What’s the Difference Between the Windows 7 HomeGroups and XP-style Networking?Internet Explorer 9 Released: Here’s What You Need To KnowHTG Explains: How Does Email Work?

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• I need a flexible VPS like gandi.com [duplicate]

  - by Sharen Eayrs

  This question already has an answer here: How to find web hosting that meets my requirements? 5 answers What are the alternative? I do not ask for which one you recommend. I am simply asking for list of similar service. That being said if there is any you've used and happy with please let me know. This is what I am considering http://en.gandi.net/ Some says it's overpriced. It's like amazon aws I think. So I need VPS hosting where I can easily change the CPU requirement, etc.

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• I enabled and setup glBlendFunc, but my texture has a white outline. What am I doing wrong?

  - by vinzBad

  You can see most of my source code in this question: Instead of the specified Texture, black circles on a green background are getting rendered. Why? Now I have the problem, that my texture has a white outline on its transparent parts. After googling and setting up glBlendFunc, the outline just got "softer". This is how it looks like: This is how I now setup OpenGL: public static void SetupGL() { GL.Enable(EnableCap.Blend); GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha); GL.Enable(EnableCap.Texture2D); GL.Hint(HintTarget.PerspectiveCorrectionHint, HintMode.Nicest); }

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• How do I pick up a new language quickly, given I know several others?

  - by Mark Trapp

  One type of question that keeps coming up on Programmers.SE is how to learn a specific language, given you know several others (usually through a lot of experience or education). In some cases, however, one might need to get up to speed quickly for a job, or for personal development, or even to check out a hot new platform. In your experience, what general strategies have you used to pick up a new language quickly? Are there specific aspects of a language you try to focus on when starting cold? What types of resources do you find helpful in this process?

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