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• Upgrade two computers on the same WIFI network from 12.04 to 12.10

  - by deshmukh

  I have two computers on the same WIFI network at home. Both run on Ubuntu 12.04 and both will need to update to 12.10 shortly. There are some applications that are installed on one but not on the other and vice versa. But they share a large many applications. Please indicate how can I upgrade both in such a way that: I download all the packages required on Computer 1 Move the downloaded packages to the other computer using external HD (that is much quicker than over WIFI) Then upgrade Computer 1 Then upgrade Computer 2 -- after it downloads any packages that are not already available. Also, I am a newbie and would be grateful if the process is simple and properly explained.

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• How can I remove the "Dash Home" icon from the Unity launcher?

  - by user27451

  My notebook has a widescreen display so vertical space is an absolute premium for me. When I installed Ubuntu 11.10 I was disappointed to see that a new icon confusingly named "Dash Home" had been added to the very top of the Unity launcher. I can't move it to the bottom (by dragging it) and it doesn't have a context menu with which to remove it (by unchecking "Keep In Launcher"). It's horrible. How can I remove it from the Unity launcher and reclaim the space that was taken from me? (I realize that if it's removed I'll have to open the dashboard with the super key - I'm fine with that)

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• How can I format my active hard drive to NTFS?

  - by Ghost

  Believe it or not, I'm not too happy with Ubuntu. Well, let me rephrase that. I like it, but the only thing I don't like about it is that it's too much of a hassle to get a game to work. I'm trying to install Windows 7 with a 4GB flash drive, but my error that comes up is that my hard drive I'm trying to install on is in ext4. I need to format it to read NTFS. I can't seem to find any topics on how to format an active hard drive. I found a topic that explains how to move Ubuntu to a new drive, but it's a bit confusing to me. Please help! (Please don't disregard this topic just because I want to go back to windows)

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• Chromium web-app creation doesn't work in 12.10?

  - by speter

  If you create an application of a website in Chromium and choose "desktop", a .desktop file is created. In 12.04, you were able to move it to ~/,local/share/applications/ and then start it from the Dash or the launcher. In my fresh 12.10 installation, this doesn't work anymore. I think the line that is misinterpreted is Exec=/usr/bin/chromium-browser --app=http://buymeapie.com/. If you try to run it from a terminal, you get the following result: 20:32 ~ speter Exec=/usr/bin/chromium-browser --app=http://buymeapie.com/ bash: --app=http://buymeapie.com/: Datei oder Verzeichnis nicht gefunden (English: "File or directory not found"). Can anyone explain or knows a workaround?

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• Lexmark X7170 shows documents as printed when they haven't

  - by Mehmet

  I made the move from Windows 7 to Ubuntu not dual booting because I have decided to quit gaming to spare more time for my studies. I just needed an OS for browsing the web and word processing etc. After I installed Ubuntu I installed the AMD GPU drivers, after which I clicked on the little printer icon, selected add printer and it found the drivers for the Lexmark 7000 series and I installed them. Now my problem is when I print something from Writer it processes it thinks its completed it, when in fact it hasn't printed anything. I tried printing a test page but it was stuck on processing for 5 minutes. I have restarted my computer and turned the printer on and off. I'm running 64bit if that changes anything.

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• Photo and Video backup [closed]

  - by MyNameIsTooCommon

  Apologies if this is the wrong forum. Please move if necessary I want to back up all my photos and videos online. Some videos are HD and up to 2GB in size. Does anyone know of any good sites? Flcker and Picasca seem the obvious ones but there seem to be limits on size. I have also heard bad things about the Picasca UI. I basically want to remove most of the photos from my laptop HD and then sync with web when I want to download them. Viewing via mobile is not a big thing for me. I just want somewhere save to back up stuff. Thanks

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• Java.net Reborn

  - by Tori Wieldt

  Java.net, the home of  Java community projects, has been re-launched with a new look and new tools for developers.  The move from CollabNet to the Kenai infrastructure offers more flexibility for developers who want to host or contribute to community projects.  Instead of the large, fixed infrastructure per project (for example, several mailing lists per project), Kenai's ala carte features allow users to take only what they need. "We will continue to have the great mix of blogs, forums, and editorial content as well as new tools on the project side, including Mercurial, Git, and JIRA for developers," Java.net Community Manager Sonya Barry explains. The migration was huge effort. Over 1400 projects were migrated (and some 30 projects are left to go). A large part of the migration was a big cleanup of abandoned projects. With the high abandonment rate of open source projects, the was a lot to remove. The new java.net site is smaller, faster and now the percentage of good, current content is much higher.Check it out at http://home.java.net/

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• Older PHP v/s newer PHP version [closed]

  - by Monty

  My company is building a website with database. Programmer's used PHP 5.0. My Service Provider (shared) in the meantime upgraded to PHP 5.3.0. Fixes have been on going and seem endless... Do I move to VPS and install older PHP or should we rebuild with newer PHP? When working remotely with programers what is the protocol regarding delivery of all code? Please what is the industry standard? I need an independent to review their work. How should this be approached?

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• Predicted target location

  - by user3256944

  I'm having an issue with calculating the predicted linear angle a projectile needs to move in to intersect a moving enemy ship for my 2D game. I've tried following the document here, but what I've have come up with is simply awful. protected Vector2 GetPredictedPosition(float angleToEnemy, ShipCompartment origin, ShipCompartment target) { // Below obviously won't compile (document wants a Vector, not sure how to get that from a single float?) Vector2 velocity = target.Thrust - 25f; // Closing velocity (25 is example projectile velocity) Vector2 distance = target.Position - origin.Position; // Range to close double time = distance.Length() / velocity.Length(); // Time // Garbage code, doesn't compile, this method is incorrect return target.Position + (target.Thrust * time); } I would be grateful if the community can help point out how this is done correctly.

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• mouse and mousepad not working properly

  - by snake

  Ubuntu 12.04 LTS Samsung Q35 The mouse pad has stopped working, only the buttons work. The external mouse is also behaving very oddly, the mouse pointer works, but the button is not working properly, it has to be pressed many times or held down to select anything, and when anything that I select behaves as though the mouse is being clicked all the screen, settings will keep changing, the page will scroll, sliders will move up and down, tabs will toggle etc, so everything is unusable with the mouse, cannot even use the browser as it keeps scrolling the page up and down. I have tested the mouse on another computer, and it works fine. Please bear in mind that I am also a complete Linux novice, I installed Ubuntu on an old laptop for my kids, that is the limit of my experience.

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• How to determine collision direction between two rectangles?

  - by Jon

  I am trying to figure out how to determine the direction a collision occurs between two rectangles. One rectangle does not move. The other rectangle has a velocity in any direction. When a collision occurs, I want to be able to set the position of the moving rectangle to the point of impact. I seem to be stuck in determining from what direction the impact occurs. If I am moving strictly vertically or horizontally I manage great detection. But when moving in both directions at the same time, strange things happen. What is the best way to determine what direction a collision occurs between two rectangles?

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• how to bind super+s to indicator applete complete? - gnome classic

  - by rrosa

  i use gnome classic, i'm not a mouse fan. when i get an email while i'm writing code, i i would super+s to get to the indicator-applet-complete and read it. also to write emails, or check unread instant messages. upgrading from 12.04 to 14.04 made super+s bind to applications menu rather than the indicator applet complete. i removed the binding from the applications using dconf-editor, navigating to: org-gnome-desktop-wm-keybindings and disabling (['disabled']) the panel-main-menu key. now, how do i bind super+s to the indicator applet complete? it seems to be some how binded, since if if press super+s and then move the cursor over the applet it'll open the drop down menus (and it won't if i hover without pressing super+s) but i don't want to have to use the mouse...

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• Do you think Windows 8 will be a success? [closed]

  - by Sean Dexter

  I'm a c# developer so far and just about to head into getting my skills up to date in WinRT. However, I'm having a crisis of faith and wondering if it might be a better career move to jump on the Objective-C bandwagon. The way I see it, Windows 8 might be a success or it might not. Apple technologies are a sure bet. Honestly, I don't want to get into Apple development. I'd prefer to pretend AAPL doesn't exist, but, unfortunately, that's not possible.

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• 12.04 - Disable the HUD trigger key [ALT] in Emacs & Terminal

  - by EoghanM

  An answer on How to disable HUD in Unity 2D? points to https://bugs.launchpad.net/unity-2d/+bug/947613 where the ALT key will be made reconfigurable. Apart from emacs usage, I'm reasonably happy with using the ALT key to bring up the HUD. While using emacs though, the ALT key is tapped frequently to invoke commands. Should emacs be special cased with respect to the ALT key? I'm wondering what the situation is with games; surely lots of games repurpose the ALT key for their own use, e.g. to fire a weapon? If so, could the same be applied to Emacs, i.e. prevent the ALT key in emacs from triggering the HUD. Edit: just realized how extensively I use the ALT key in the terminal: a quick tap of ALT+B to move back a word loses focus of the terminal and brings up the HUD. Aghch

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• How do I fix this half screen problem?

  - by link1275

  I just installed 12.04, and my entire screen is being displayed entirely on the top half of my screen. The bottom half is always black or some technical garbage from the boot up. To interact with the bottom half of the screen I have to move the mouse over the screen to pull part of the bottom half of the screen on top and vice-versa. Does anyone know how to fix this? Also my computer told me, at startup, to go to here: http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware.

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• Ubuntu freezes when gdm starts

  - by Enrique

  I have Ubuntu 10.10 (upgraded from 10.04) I was browsing in Firefox yesterday, then the PC suddenly did a reset Once it restarted, everything went normal until gdm begun showing. Then everything froze and locked when userlist showed. I can't move mouse pointer nor do anything with keyboard at this point (just after userlist shows in gdm). PS: Both, mouse and keyboard work fine, because this Ubuntu is dual-booting with a Windows XP install which loads/works fine. Here is my .xsession-errors file, but I don't have a clue what may be wrong. Thanks http://pastebin.com/GVtneEAF

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• Deferent ways of solving problems in code.

  - by Erin

  I now program in C# for a living but before that I programmed in python for 5 years. I have found that I write C# very that most examples I see on the web. Rather then writing things like: foreach (string bar in foo) { //bar has something doen to it here } I write code that looks like this. foo.ForEach( c => c.someActionhere() ) Or var result = foo.Select( c => { //Some code here to transform the item. }).ToList(); I think my using code like above came form my love of map and reduce in python while not exactly the same thing the concepts are close. Now it's time for my question. What concepts do you take and move with you from language to language. That allow you to solve a problem in a way that is not the normal accepted solution in that language?

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• How To Remove Authorized PCs from Your Windows Store Account

  - by Taylor Gibb

  One of the awesome things about the Windows Store is you are allowed to install any app you purchase on up to 5 Windows machines. This means that the PC you install the app on gets added to your Trusted PC list. Here’s how to clean up that list. Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It How To Delete, Move, or Rename Locked Files in Windows

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• How do I implement powerups for my Breakout clone?

  - by Eva

  I'm making a simple Breakout clone in Python that will have very many powerups/powerdowns (so far I came up with 26). Some will affect the paddle (paddle missile, two paddles, short paddle, etc.), some will affect the ball (slow ball, destructo-ball, invisible ball, etc.), some will affect the bricks (brick scramble, move up, bricks indestructible, etc.), and some will affect other game aspects (extra life, more points, less points, etc.). I'm pretty sure I have the code to draw the falling powerups and test for collisions with the paddle down, but I'm confused about how to code the effects of the powerups. Since there are very many powerups, it seemed inefficient to add specific methods to each component as done in this tutorial. However, I can't think of an other ways to implement the powerups. I found a page that hints at some way to design powerup behavior using classes, but I'm at a loss for how to do that. (A short example would help.) Please give me a short code example of another way to implement the effects of the powerups.

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• How to lower wait time for repository updates

  - by Luis

  When doing a aptitude update / apt-get update or using the Update Manager to update sometimes I get to a repository link that takes too long. The percent does not end and it takes quite a while before it ignores it. How can I lower the time so that if a particular repository takes more than 10 seconds to connect or finish it should ignore it and move the following ones. Here is an image explaining the problem: It is trying to connect to archive.ubuntu.com but since it is taking too long it just sits there for at least 3 to 5 minutes (Haven't measured the time) and then it shows as ignored and moves to the following. I wish to change that to seconds instead of minutes.

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• OpenGL ES 2.0. Sprite Sheet Animation

  - by Project Dumbo Dev

  I've found a bunch of tutorials on how to make this work on Open GL 1 & 1.1 but I can't find it for 2.0. I would work it out by loading the texture and use a matrix on the vertex shader to move through the sprite sheet. I'm looking for the most efficient way to do it. I've read that when you do the thing I'm proposing you are constantly changing the VBO's and that that is not good. Edit: Been doing some research myself. Came upon this two Updating Texture and referring to the one before PBO's. I can't use PBO's since i'm using ES version of OpenGL so I suppose the best way is to make FBO's but, what I still don't get, is if I should create a Sprite atlas/batch and make a FBO/loadtexture for each frame of if I should load every frame into the buffer and change just de texture directions.

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• Should I Learn C/C++ Even If I Just Want To Do Web Programming?

  - by Daniel

  My goal is to be able to create online apps and dynamic, database driven websites. For instance, if in the future I get the idea for the next Digg or Facebook, I want to be able to code it myself. To arrive there I think I have basically two paths: Path 1 Start at a basic level, learning C, then C++ for OOP, then algorithms and data structures, with the goal of getting a solid grasp of computer programming. Only then move to PHP/MySQL/HTTP and start working on practical programming projects. Path 2 Start directly with PHP/MySQL/HTTP and getting my hands dirty with practical projects right away. What would you guys recommend?

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• After reinstalling ATI graphics drivers, my keyboard and mouse aren't working anymore

  - by Lifelike27

  On Ubuntu 11.04 I tried to install the open source drivers for my laptops ATI Mobility Radeon 5470M but I messed that up a bit and lost xserver. Now I've managed to solve that problem with this and by downloading the ATI proprietary drivers and install those manually. Now, when Ubuntu loads up I get to the login screen but I can't use my mouse or my keyboard (usb keyboard and mouse doesn't work either). If I use the recovery console, then login with that and then run 'startx'. I can login fine (though Unity doesn't show, the graphics seem to be working because it shows the fading animation of libnotify), but I can't type or move my mouse.

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• Should iOS games use a Timer?

  - by ????

  No matter what frameworks we use -- Core Graphics, Cocos2D, OpenGL ES -- to write games, should a timer be used (for games that has animation even when a user doesn't do any input, such as after firing a missile and waiting to see if the UFO is hit)? I read that NSTimer might not get fired until after scheduled time (interval), and CADisplayLink can delay and get fired at a later time as well, only that it tells you how late it is so you can move the object more, so it can make the object look like it skipped frame. Must we use a Timer? And if so, what is the best one to use?

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• Switching domains in one's career?

  - by rocknroll

  I have been a C++,Qt programmer for the last 3.5 years and have hit a plateau in terms of doing something new. Work has been repetitive and routine. I personally believe it is time to move on but off late I am getting more offers in mobile development like Android,Iphone etc. The latest offer I have is for objective-C based profile. I do not have the slightest idea about objective-C apart from that it is Object oriented C resembling C++ but not exactly a clone. Questions in my mind are --what are the pros/cons of this careers switch or for any such switch? --Is it good for one's career to change domains after sometime? --How difficult it is to get back to one's previous area of proficiency? Thanks

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