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• Trying to re-install ubuntu 11.10on an HP Pavillion G6, screen goes black after the ubuntu logo shows.How do I get it to install normally?

  - by Josh Towers

  Installed Ubuntu 11.1 successfully without my wireless device being recognized. Used sudo apt-get update + upgrade commands to attempt to fix this. Computer crashes after upgrade and now it won't finish re-installing Ubuntu, after it shows the first purple screen with the Ubuntu logo, the screen goes black. Used the Derik's Boot Nuke CD and then attempted re-installment again, and the black screen problem remains consistent, seemingly no matter what I do. It sounds like it's installing but won't let me see anything or go anywhere. heelllppp

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• Vanilla forum personal journal tool

  - by user16648

  I am developing a forum for a research project, i am using Vanilla forum (though i am not tied to this yet). Another feature of this site will be a personal journal/diary/blog. Only the user and administrators will have access to the journal. The journal does not need any advanced features. Does anybody have any suggestions on software/script that could easily be integrated with Vanilla forum for this purpose? My first thought was using Wordpress but it is a bit to complex to adminstrate as the site is meant to be simple. And i dont really see how it can be intregrated easily the way i want it.

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• Why and when to use Personal Package Archives (PPA)

  - by reversiblean

  Do you prefer PPA over core repositories and why or why not? Are there any compatibility issues when using a PPA as there are different distro releases but just one common repository? Where would you normally search for application repositories that are not in the core repositories? I.e., I was about to install Gnome Flashback in Ubuntu 12.04 which is the new classic version of earlier fallback but found that it's only available as a ppa-release and was wondering which one to choose between the two; fallback or newer flashback.

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• Active PPA for latest stable chromium? [closed]

  - by trmpa

  Possible Duplicate: How to install the latest stable version of Chromium? I run chromium and used this PPA: https://launchpad.net/~chromium-daily/+archive/stable I just realized that it seems to be abandoned and I'm running a quite outdated version of this browser. There have not been any updates since the first of May this year. Do you know of any PPA thats actively maintained? Thanks, trmpa (Yes, I know, I could use google chrome but i would like to go with chromium if possible. Building from source is also not a good option. It's not my own machine and I need updates to work reliably without much intervention from the user)

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• google maps based desktop application

  - by dramaticlook

  I want to build a desktop application which has google maps embedded to it. This app should have a thread to read coordinate data online a usb microphone to use. This application will move the google map markers to their new locations based on the data retrieved from online connections on each refresh. As far as I know gmaps has a javascript API so the first idea in my mind was to embed this mapview into a java applet. So the application will run on a browser. Im not sure if this will work. Do you guys have any idea about this or any other advices you might have? Thanks in advance!!!

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• New to Java Programming - Error help

  - by JJJ

  I am going through a Java book and drafting the examples and have run into the following error when compiling this code. Any help would be appreciated thank you. Error: Main.java:3: class Addition is public, should be declared in a file named Addition.java public class Addition        ^ 1 error Code: import java.io.*; import java.util.Scanner; public class Addition {   public static void main(String[] args) { java.util.Scanner input = new java.util.Scanner(System.in);  int number1; int number2; int sum; System.out.print( "Enter first digit: " ); number1 = input.nextInt(); System.out.print( "Enter second digit:" ); number2 = input.nextInt(); sum = number1 + number2; System.out.printf( "Sum is %d\n, sum" );      } }

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• What is the concept behind writing a cancel operation in c++?

  - by ToMan

  I'm attempting to write a cancel operation for a software download application. This application will first transfer the software to the device and then install the software on it. (These are givens I'm not allowed to change). What should the cancel operation do? When a user presses 'cancel', the application should stop transferring/installing the software immediately. Question: Since I've never written a "cancel" function, I'm wondering what are the types of things to consider when writing the code, and what are the common bugs I should expect and how to deal with them? Couldn't find anything in google so if you have some links that would be good reads I'd really appreciate it since I'm not looking for answers I'm just looking for guidelines/macro/concept help

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• How to read data from a large number of files in a folder? [closed]

  - by Gary Dhillon

  I seem to be having some trouble figuring out a solution for a problem. See the thing is, my code is supposed to read a lot of data from a bunch of files. I've been thinking of two different approaches: 1) the first one seems simpler, I ask the user if they would like to examine the next file or just quit out of the program.( I believe this is simpler and would take less time to run through.) 2)It reads through all the files and outputs the results for each of them, and then a shared result for all of them.( I think this would be better for what I've been asked to do and it saves the user some hassle.) If anyone can tell me how to code either of these in C++, I would be very grateful. Here is a sample of the file: 0 -- 19 weight 0 -- 20 weight I use this to determine density and possibly ignore the weights which is a number.

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• What a c++ dev can expect on an interview to Rails company?

  - by Nazgob

  Hello, little background first. I have been working on C++ backend large scale apps for over 5y. I'm doing TDD, using STL and Boost etc. I decided I need a change and about year ago started learning Ruby, few months ago I started playing with Rails, html5 and css. I don't know JavaScript(yet... I focus on Rails now) What can I expect on an interview for a Ruby on Rails backend developer job? How can I present myself to take advantage of my c++ experience? I'm on a senior level now and I can't start from intern position.

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• How to do pre-loading

  - by Dave

  I have a question that is confusing me with making a game. For my game launch i pre load everything for the main menu then i loop the game to display it. But lets argue player wants to launch a new game or a specific level, then you preload the relevant sounds/graphics for that level right? How ever, the player must already be running the game loop if they are at the main menu, so you can't load in the game loop or you will load every frame...but im pretty sure most big games don't preload every level when you first run the game from desktop because it would take a long time on some of these games.... How is it done :S

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• Project Server 2010 site creation - the database connection string is not available

  - by Brandon Montgomery

  I am trying to get Project Server 2010 up and running on a Win Server 2008 box. I've got Sharepoint 2010 installed and Project Server 2010 installed. I open SharePoint Central Administration, then I go to Manage Service Applications Project Server Service Application. It looks like there is a site under the "Sharepoint - 80" section, but the Status says "Failed - see the Application event Log". When I click on the site and select "Retry" I get the same thing. In the event viewer, I see an error with SharePoint Foundation Search as the Source - it reads: Could not create a database session. Context: Application '276504a6-93b1-4c1f-a900-fd6ed9d5c117' Details: The database connection string is not available. (0xc0041228) How can I fix this? Is there some configuration I missed?

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• Cannot connect to ethernet port

  - by Jnir

  I'm running Ubuntu 12.04 LTE. I'm trying to connect via ethernet for the first time but have had no success. Ifconfig eth0 returns: eth0 Link encap:Ethernet HWaddr: 00:01:2e:3f:f1:a0 inet6 addr: fe80::201:2eff:fe3f:f1a0 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:68 errors:0 dropped:0 overruns:0 frame:0 TX packets:183 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:8374 (8.3 KB) TX bytes:42944 (42.9KB) Interrupt:16 Base address:0x6c00 /etc/network/interfaces has auto lo iface lo inef loopback auto eth0 iface eth0 inet dhcp sudo /etc/init.d/networking prints: * Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces * Reconfiguring network interfaces... Failed to bring up eth0 [OK]

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• Models, collections...and then what? Processes?

  - by Dan

  I'm a LAMP-stack dev who's been more on the JavaScript side the last few years and really enjoying the Model + Collection approach to data entities that BackboneJS, etc. uses. It's helped me organize my code in such a way that it is extremely portable, keeping all my properties and methods in the scope (model, collection, etc.) in which they apply. One thing that keeps bugging me though is how to organize the next level up, the 'process layer' as you might call it, that can potentially operate on instances of either models or collections or whatever else. Where should methods like find() (which returns a collection) and create() (which returns a model) reside? I know some people would put a create() in the Collection prototype, but while a collection operates on models I don't think it's exactly right to create them. And while a find() would return a collection I don't think it correct to have that action within the collection prototype itself (it should be a layer up). Can anyone offer some examples of any patterns that employ some kind of OOP-friendly 'process' layer? I'm sorry if this is a fairly well-known discussion but I'm afraid I can't seem to find the terminology to search for.

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• Effective and simple matching for 2 unequal small-scale point sets

  - by Pavlo Dyban

  I need to match two sets of 3D points, however the number of points in each set can be different. It seems that most algorithms are designed to align images and trimmed to work with hundreds of thousands of points. My case are 50 to 150 points in each of the two sets. So far I have acquainted myself with Iterative Closest Point and Procrustes Matching algorithms. Implementing Procrustes algorithms seems like a total overkill for this small quantity. ICP has many implementations, but I haven't found any readily implemented version accounting for the so-called "outliers" - points without a matching pair. Besides the implementation expense, algorithms like Fractional and Sparse ICP use some statistics information to cancel points that are considered outliers. For series with 50 to 150 points statistic measures are often biased or statistic significance criteria are not met. I know of Assignment Problem in linear optimization, but it is not suitable for cases with unequal sets of points. Are there other, small-scale algorithms that solve the problem of matching 2 point sets? I am looking for algorithm names, scientific papers or C++ implementations. I need some hints to know where to start my search.

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• What frameworks are available for cross device 2d game development?

  - by kim3er

  I'm about to embark on a 2D gaming project. Initially, I'll be targeting iPhone and Facebook, but would like to expand the rollout to include Android (and possibly Windows Phone) in a future phase. Flash and Unity seem to be the most likely suspects, but is one better than the other? Are there pros/cons that may not be obvious at first glance? Are there frameworks that I have not considered? I am primarily a .NET developer, so the Unity C# integration is appealling. But I also have experience with AS3, JavaScript and Objective-C. Rich

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• Recursively apply ACL permissions on Mac OS X (Server)?

  - by mralexgray

  For years I've used the strong-armed-duo of these two suckers... sudo chmod +a "localadmin allow read,write,append,execute,\ delete,readattr,writeattr,readextattr,writeextattr,\ readsecurity,writesecurity,chown" sudo chmod +a "localadmin allow list,search,add_file,add_subdirectory,\ delete_child,readattr,writeattr,readextattr,\ writeextattr,readsecurity,writesecurity,chown" to, for what I figured was a recursive, and all-encompassing, whole-volume-go-ahead for each and every privilege available (for a user, localadmin). Nice when I, localadmin, want to "do something" without a lot of whining about permissions, etc. The beauty is, this method obviates the necessity to change ownership / group membership, or executable bit on anything. But is it recursive? I am beginning to think, it's not. If so, how do I do THAT? And how can one check something like this? Adding this single-user to the ACL doesn't show up in the Finder, so… Alright, cheers.

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• How to setup a wifi ap hotspot with ipv6 support?

  - by keyman

  How to setup a wifi ap (access point mode) hotspot, with IPv6 support? I've set up a hotspot according to the guide to wifi ap hotspot setup and it works fine. But via the hotspot I failed to visit IPv6 websites. How can I setup a hotspot able to share Ipv6 Internet access? Thanks! Further: Actually I've tried to setup IPv6 forwarding and masquerading. First enabling IPv6 forwarding: echo 1 | sudo tee net/ipv6/conf/default/forwarding Then I tried to execute: sudo ip6tables -t nat -A POSTROUTING -s 2001:db8:0:1::/64 -o eth0 -j MASQUERADE But it gave me an error: ip6tables v1.4.12: Couldn't load target `MASQUERADE':No such file or directory I searched through the Internet but I get confused. So I'm here for help. Thanks!

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• making "xwacom set" changes permanent

  - by Philippe

  On my Thinkpad X220 Tablet the touch-finger works flawlessly but the pen is terribly miscalibrated. The calibration tool in System settings - Wacom tablet does not work. Instead, whenever I wan't to use the pen I first need to sudo xsetwacom set 'Wacom ISDv4 E6 Pen stylus' Area 0 0 27760 15690 These changes do not remain permanent. That is, after every reboot they are gone. How can I make the change permanent - I'm not looking for a startup scrip, I'd like to set the right area once for all. Any idea?

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• Is client side JavaScript capable of replicating the Node.JS module loading system?

  - by jt0dd

  I like the Node.JS style of JavaScript, where I can write all of my functionalities into smaller files and then require those neatly from within my code. I'm even thinking about trying to write a framework to mimic that behavior in client-side JS. My goal would be to implement the module loading system as accurately as possible - See Module docs. For require(), I can use things detailed in answers to this question, most notably JQuery's $.getScript(). It seems to me that other aspects of the module loading system should be possible as well. So I'm asking more experienced programmers here first, before I waist my time: Is there something that I'm missing that's going to cause such an attempt to fail miserably, or can this be successfully done?

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• Run server side script

  - by ooo

  I'm in the process of deploying my first website which is written is ASP.NET. I need to run a server side script at set intervals during the day which updates a database even if there is nobody using the site. I was led to believe that using Windows task scheduler would be the best option but now I've joined a hosting company the layout is not really how I was expecting. It's a shared hosting with basic FTP and no apparent built in task scheduler. The hosting company support is not very good and haven't been able to advise how I could do this so hoped to get help here on options before I consider changing company. [The hosting company starts with 1 and ends with 1 :)]

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• Push The Pebble

  - by andyleonard

  Introduction This post is the fifty-fifth part of a ramble-rant about the software business. The current posts in this series can be found on the series landing page . This post is about starting something. Today is the First Day… … of something. Somewhere, someone is starting something shat will become big. It will impact lives. It will change things, forever. Somewhere else, someone is improving the thing they started recently. They are tweaking, tinkering, thinking, and doing. Is either of these...(read more)

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• root and home are on seperate partitions, but home still uses up space on root?

  - by Void

  When installing Ubuntu 12.10 for the first time, I made sure /home had it's own partition, gave it about 185GB, and gave root ~10GB. Now root is almost full after a few days and I've noticed that root is as big as /home and some additional MB from some actual root files. Note that I deleted some unused files in /home to make sure it really affects how much space is used in root, and it clearly does. (checked in gparted) I've also made sure the files I am talking about are actually in /home/myname/ and not just in root's home. df -h spits out this information: df: `/root/.gvfs': Permission denied Filesystem Size Used Avail Use% Mounted on /dev/sdb2 9.2G 7.9G 908M 90% / udev 3.9G 12K 3.9G 1% /dev tmpfs 1.6G 932K 1.6G 1% /run none 5.0M 0 5.0M 0% /run/lock none 3.9G 6.4M 3.9G 1% /run/shm none 100M 112K 100M 1% /run/user /dev/sdb3 184G 4.9G 170G 3% /home /dev/sdb4 729G 87G 642G 12% /media/mave/Storage I cut out my windows partitions as I don't see any relevance. I hope this is enough information for someone to tell me what I did wrong

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• USB (wireless) keyboard not recognised during install

  - by Jon C

  I'm just trying my first trip into the world of Ubuntu. Trying to install from CD on to a virgin machine, I get the initial language prompt, select 'English', I get the Ubuntu install options, select 'Install Ubuntu Server'. I'm then presented with a further 'Language for installation' screen. At this point my keyboard stops working...! Some specifics: I'm using a Logitech wireless USB keyboard - it works fine on another machine; Machine is a ProLiant Micorserver N54L (No PS/2 ports); BIOS USB support is set to Legacy. Any ideas...? Thanks, Jonathan

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• View space lighting in deferred shading

  - by kochol

  I implemented a simple deferred shading renderer. I use 3 G-Buffer for storing position (R32F), normal (G16R16F) and albedo (ARGB8). I use sphere map algorithm to store normals in world space. Currently I use inverse of view * projection matrix to calculate the position of each pixel from stored depth value. First I want to avoid per pixel matrix multiplication for calculating the position. Is there another way to store and calculate position in G-Buffer without the need of matrix multiplication Store the normal in view space Every lighting in my engine is in world space and I want do the lighting in view space to speed up my lighting pass. I want an optimized lighting pass for my deferred engine.

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• Javascript Tips and Tricks

  - by ybbest

  1. Replace all , in one Javascript string. var totalAmount= "100,000,000,000"; var find= ","; //Replace the first , with the empty string var replace=""; totalAmount= totalAmount.replace(find,replace); alert(totalAmount); var totalAmount2= "100,000,000,000"; var newFind=/,/g //Replace all , with empty string totalAmount2= totalAmount2.replace(newFind,replace); alert(totalAmount2);

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