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• GRUB- error: no such partition grub rescue and Error: No default or UI configuration directive found boot > on pendrive

  - by Ash

  I have dell inspiron, previously I installed Ubuntu 11.10 on my Windows 7 and made it dual boot. But since I want to upgrade my Ubuntu version and change the partition spacing, I deleted 11.10 partition directly and extended my hardrive space (Windows + Ubuntu) at that moment everything was fine. Then I prepared a 12.04 32bit USB and…

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• Ubuntu Hangs Suddenly (Dell Latitude E5530)

  - by iFadey

  I recently bought (a month ago) Dell Latitude E5530 which comes pre-installed with Ubuntu 11.10. I removed Ubuntu 11.10 and installed 12.04 LTS right after the purchase. Everything worked out of box but occasionally Ubuntu completely hangs. The screen freezes and I can't even switch to other terminals by pressing (CTRL+ALT+F*). Whenever the…

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• Best practice Java - String array constant and indexing it

  - by Pramod

  For string constants its usual to use a class with final String values. But whats the best practice for storing string array. I want to store different categories in a constant array and everytime a category has been selected, I want to know which category it belongs to and process based on that. Addition : To make it more clear, I have a…

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• Authorization pop-up requested by http://localhost:51675 every time I run Firefox

  - by user10711

  Using Ubuntu 10.04. Whenever I run Firefox I get a pop up requesting authorisation. It says 'a user name and password are being requested by http://localhost:51675. The site says "server" I have tried all passwords I know and nothing is accepted. If I click 'cancel' it disappears but re-appears after about 5 minutes. This whole…

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• When would you want two references to the same object?

  - by HCBPshenanigans

  In Java specifically, but likely in other languages as well; When would it be useful to have two references to the same object? Example: Dog a = new Dog(); Dob b = a; Is there a situation where this would be useful? Why would this be a preferred solution to using a whenever you want to interact with the object represented by…

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• Loud and annoying noise on login

  - by searchfgold6789

  I have a PC with Kubuntu 13.10 64-bit on it. The problem is that whenever I log in (automatic log in is enabled), there is a loud double-click noise that sounds from the speakers whether the volume is muted or not. I have two sound cards; the motherboard audio, which is disabled in the BIOS, and the Creative! Labs Sound Blaster…

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• Blogger Dynamic template sometimes broken

  - by ber4444

  In all browsers (IE, Chrome, etc.) in my office and in all Blogger blogs using the dynamic template, I'm having this strange problem: No menu on the right side (except for the Subscribe button - other buttons are missing) plus no layout selection bar (top row). This problem is occasional, not happening reliably; any ideas? …

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• Inkscape won't open .cdr files

  - by Bora George

  Hello I'm running Kubuntu 12.04 and I've installed Inkscape because I need to edit a .cdr file, Inkscape works like normal but the sole task I need it to do is edit said .cdr file which I understand it should be capable off by default. Whenever I try to open the file though I get the following error: UniConvertor failed: …

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• Liskov substitution principle with abstract parent class

  - by Songo

  Does Liskov substitution principle apply to inheritance hierarchies where the parent is an abstract class the same way if the parent is a concrete class? The Wikipedia page list several conditions that have to be met before a hierarchy is deemed to be correct. However, I have read in a blog post that one way to make things…

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• SFML title bar with weird characters when using UTF-8

  - by TheOm3ga

  (Previously asked at http://stackoverflow.com/questions/4922478/sfml-title-bar-with-weird-characters-when-using-utf-8) I've just started using SFML and one of the first problems I've come across is some weird characters on the the titlebar whenever I try to use accents or any other extended char. For instance, I've got: …

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• Desktop interface crashes after software updates

  - by N.C. Weber

  Recently, after installing Ubuntu software updates on the evening of December 7th, 2012, my desktop interface crashes regularly leaving me with a command line screen with a long string of automated commands showing (I assume what goes on behind the pretty desktop). At first, I thought it was only crashing whenever I…

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• Change the brightness adjustment interval

  - by TreefrogInc

  So whenever I hit my dim/brighten keys on the keyboard, a notification bubble pops up with the screen brightness. All that's fine, but I would like to be able to change how much the brightness changes with each key press. For example, right now it takes just 5 presses to go from the completely dark to the brightest…

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• Ripping MP3s in Rhythmbox Ubuntu 12.10 (64 bit)?

  - by James Fellows Yates

  I installed a couple of days ago Ubuntu 12.10 (64 bit). I today tried ripping a CD in the MP3 format. However, whenever I try to rip, it says it is missing an extra multimedia plugin "Gstreamer extra plug-ins (i386)". I then try to install the :i386 version of the gstreamer-ugly plugins, but then I get the same…

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• Ubuntu 12.04, web cam light flashing

  - by user205877

  Have been running Ubuntu on my Compaq C757 reliably since 9.10. Currently running a fresh install of 12.04 LTS. Somewhere during my regular updates, my webcam started flashing its power light. Light flashes from logon screen all throughout my session. I am not running Google Chrome but chromium and firefox. Webcam…

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• Disable incognito in chrome or chromium

  - by TheIronKnuckle

  I'm addicted to certain websites to the point where it's interfering with my life regularly and sick of it. I want to install website blockers that aren't easy to circumvent. In Chrome, incognito mode is easily accessible with a ctrl-shift-n. That is ridiculous. Whenever I feel an urge to go on an addictive…

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• Grub Rescue Error: Unknown Filesystem

  - by James

  I was trying to dual boot Windows with Linux (linux installed first). I read that it was easier to do so if windows was installed first. So I tried to install windows, by creating a partition for it. There wasn't enough room on the drive so I tried changing the filesystem of my existing partition to…

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• is it possible for windows viruses when downloaded through ubuntu affect my windows os

  - by fr33c0untry

  I know that Ubuntu is immune to virus so there is no question of it getting infected while browsing the net.however i frequently transfer files from my pendrive (which i get from other virus infested computers) to my own laptop and save it on the data drive which is shared by both windows and ubuntu.i…

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• How do I get rid of this drive mount confirmation question when booting the computer?

  - by Dave M G

  With help from this site, I was able to set up an SSHFS connection between two computers on my LAN so that one auto mounts on the other at boot time. Everything works, but there is this annoying confirmation that comes up whenever I boot: An error occurred while mounting /home/dave/Mythbuntu. …

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• How can I store all my level data in a single file instead of spread out over many files?

  - by Jon

  I am currently generating my level data, and saving to disk to ensure that any modifications done to the level are saved. I am storing "chunks" of 2048x2048 pixels into a file. Whenever the player moves over a section that doesn't have a file associated with the position, a new file is created. …

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• how can i fix this problem with mount volume in ubuntu 10.10?

  - by Ali Unlu

  I have two operating system: ubuntu 10.10 and windows 7 ultimate. I trisected my HDD.One of these is for main Windows files,one of this for ubuntu system and the last drive which must be accessible on both of two system is for common files (musics, films, etc). This last partition is J: in…

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• Sang Shin is back!

  - by arungupta

  Sang Shin is back at Oracle. He is well known for his wide range of Java tutorials at javapassion.com. As a former Sun evangelist, he helped GlassFish and Java EE adoption and continued to do even after his days at Sun. In his current role, he will help evangelize and drive adoption of…

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• Google is good or bad for programmer? [closed]

  - by Vikas

  Recently I was being interviewed by a company and faced one question. The interviewer asked me a question and at that time I didn't know the answer but if I had been asked about just 4 months ago, I could have answered it. The question was from new language that I learned just 4 months…

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• Blank Processes (?) in Natty Narwhal

  - by A Hylian Human

  I've noticed that there a seemingly blank processes (no process name, no cmdline info, only an ID), which also appear to cause my CPU to be running like crazy. My fans are going pretty much full speed and I have no idea what to do. Restarting does not help. Whenever I try to kill the…

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• Displaying and updating score in Android (OpenGL ES 2)

  - by user16547

  I'm using a FrameLayout where I have a GLSurfaceView at the bottom and a few Views on top of it. One of those Views is a TextView that displays the current score. Here's how I'm updating the score TextView based on what happens in my game loop: whenever an event happens that…

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• Unity3D problem. Bullets fall down instead of flying like they should

  - by user2342080

  I used this tutorial as a reference. http://www.youtube.com/watch?v=3L8eaoyZ0Go My problem is that whenever I play the game, EVERYTHING works but the bullets. It just falls down instead of flying forward. This is the flash version of the game: http://v1k.me/swf/ Can some one…

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