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• How to use Btrfs with compression on external USB hard drive?

  - by Andre

  I would like to make use of Btrfs' transparent compression on an external drive. Which tool is best for formatting the drive? Disk Utility or GParted? How do I activate the compression? During formatting or when I mount the drive? I guess at mount time. I'm using usbmount to automatically mount newly attached devices, because nobody is logged in on the desktop. Would I have to set general default options somewhere in a system configuration file to get Btrfs mounted with compression, or would I specify this via FS_MOUNTOPTIONS in /etc/usbmount/usbmount.conf and how? Thanks!

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• Oracle University Nouveaux cours (Week 10)

  - by swalker

  Parmi les nouveautés d’Oracle Université de ce mois-ci, vous trouverez : Database RAC & Grid Infrastructure for Oracle Solaris System Administration (1 day) Oracle Database 11g: Performance Tuning (Training On Demand) Development Tools Oracle Database: Program with PL/SQL (Training On Demand) MySQL MySQL for Database Administrators (Training On Demand) Fusion Middleware Oracle SOA Suite 11g : Concepts de base (3 days) Oracle WebCenter Portal 11g: Build Portals With Spaces (3 days) Oracle WebCenter Content 11g: Site Studio Essentials (5 days) Oracle BPM 11g Modeling (3 days) Business Intelligence & Datawarehousing Oracle BI 11g : Mise à niveau et nouvelles fonctionnalités (2 days) Oracle BI Applications 7.9.6: Implementation for Oracle EBS (4 days) Oracle BI Applications 7.9.6: Implementation for Siebel CRM (4 days) Oracle BI 11g R1: Build Repositories (Training on Demand) Fusion Applications Fusion Applications: Extend Applications with ADF (5 days) E-Business Suite R12.x Extend Oracle Applications: Building OA Framework Applications (Training On Demand) PeopleSoft PeopleSoft Integration Tools Rel 8.50 (Training On Demand) Contacter l’équipe locale d’Oracle University pour toute information et dates de cours.

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• Would installing debugging symbols help for reporting bugs?

  - by Chris

  I'm running a beta version of Ubuntu (12.10) and I've been reporting crashes through apport's automated system. I've glanced at the stacktraces for a couple of the issues and noticed a lot of what look like hex addresses and these: "No symbol table info available." I was wondering if installing the debugging symbols packages from synaptic would provide better information to package maintainers when I report bugs. In other words, would the stacktrace be more useful if I installed those packages? If so, would installing those packages make any (noticeable) performances differences (will my computer run slower)? Thanks, Chris

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• Compact DIY Office-in-a-Cart Packs Away Into a Closet

  - by Jason Fitzpatrick

  Many geeks know the pain of losing a home office when a new baby comes along, but not many of them go to such lengths to miniaturize their offices like this. With a little ingenuity an entire home office now fits inside a heavily modified IKEA work table. Ian, an IKEAHacker reader and Los Angeles area geek, explains the motivation for the build: I had to surrender my home office to make room for my new baby boy ;) I took an Ikea stainless steel kitchen “work table”, some Ikea computer tower desk trays, two steel tabletops, and two grated steel shelves to make an “office” that I could pack away into a closet. Hit up the link below to check out the full photo set, the build includes quite a few clever design choices like mounted monitors, a ventilation system, and more. Home Office In A Box [IKEAHacker] HTG Explains: How Antivirus Software Works HTG Explains: Why Deleted Files Can Be Recovered and How You Can Prevent It HTG Explains: What Are the Sys Rq, Scroll Lock, and Pause/Break Keys on My Keyboard?

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• What You Said: How You Monitor Your Computer

  - by Jason Fitzpatrick

  Earlier this week we asked you to share your computer monitoring tips and tricks, now we’re back to share the wealth. Read on to see how your fellow reader monitor their gear. One of the more popular monitoring tools, thanks in part to the amount of things beyond just hardware it can monitor, in the comments was Rainmeter. Lee writes: I don’t really monitor my computer constantly, only when something is hanging up and I need to see what’s causing it. That being said, I do have Rainmeter so I can quickly see how much RAM or CPU is being used. For anything more detailed, I just go into the task manager and sort by RAM or CPU. Shinigamibob uses a wider range of tools to get a more in-depth look at difference aspects of his computer: 7 Ways To Free Up Hard Disk Space On Windows HTG Explains: How System Restore Works in Windows HTG Explains: How Antivirus Software Works

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• Phishing alert but file never existed

  - by IMB

  I got an alert from Google Webmasters. They say the following file was present in my host: example.com/~jhostgop/identity.php I checked my files and it never existed at all. I've experience this problem in two different host and domains but the file never existed in my file system. It appears somebody out there is linking a random domain and it prefixes the link with /~jhostgop/identity.php. Now Google may have indexed them so now I get those false phishing alerts. Anyone experienced this? Is it possible to prevent this?

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• Windows no longer display with proprietary ATI Catalyst drivers

  - by Insomniac

  I recently started having an issue that opening any application would would show nothing on screen. At the time I noticed it I assumed it was an incompatibility between the new 14 update so reinstalled the old 13.10 iso I used originally. I have now tried a range of ATI drivers including the latest and the exact file I installed the first time with the same results. I can only assume then that it is one of the updates applied at some point, but have no idea which one or how I would go about rolling these back or getting earlier versions of packages. Is anyone else getting this issue? The system has 2 ati 6850s installed, not in crossfire. The open source drivers work fine but I need the ATI ones for cgminer to work.

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• Minimum brightness level is brighter than the levels just above it

  - by greggory.hz

  I'm using a macbook pro 8,1. When I use the brightness keys on the keyboard, decreasing the brightness works until it reaches the lowest brightness level. At that point (when on the lowest level), the brightness is something like 70 or 80% instead of 0-10% (or whatever it usually is). All the other levels are fine. How can I adjust/calibrate these brightness controls? PS: I'm currently using 12.04 but I've had the same issue no later than 11.10 (and I'm fairly confident it was present in 11.04 as well). UPDATE: If I go to System Settings and select "Brightness and Lock" the exact same thing happens, but there is more fine grained control of the brightness. It goes to completely black when the dial is about 10% from the left edge. When it passes that point, anywhere inside that left 10% appears to be about 70 - 80% brightness (there's no change regardless of where the dial is in this section).

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• How to find the exact font used by the browser

  - by sreekanth

  I have used the css style sheet as font-family:arial,helvicta,sans-serif,etc... in a php file when i checked it in browser i dont know which font it is using from the font-family . i wanted to know the exact font used by the browser to display. i.e whether it is using arial or helvicta or sans-serif for the text i have displayed. please any one let me know to find this. i have checked by putting this in wordpad but it is taking my default system font. Thanks in advance

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• Introducing the Documentation Workflows

  - by Owen Allen

  The how-to documents  provide end to end examples of specific features, such as creating a new zone or discovering a new system. We are enhancing the individual how-tos with documents called Workflows. These workflows are each built around procedural flowcharts that show these larger and more complex tasks. The workflow indicates which how-tos or other workflows you should follow to complete a more complex process, and give you a flow for planning the execution of a process. Over the coming days I'll highlight each of these workflows, and talk about the tasks that each one guides you through.

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• Friday Fun: Maus Trap

  - by Asian Angel

  Friday is here once again, but today you are not the only one who needs to escape! This week your mission is to help a poor mouse named Peanut escape the dangerous lab she is trapped in. Do you have what it takes to save the day Latest Features How-To Geek ETC How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware The Splendiferous Array of Culinary Tools [Infographic] Add a Real-Time Earth Wallpaper App to Ubuntu with xplanetFX The Citroen GT – An Awesome Video Game Car Brought to Life [Video] Final Man vs. Machine Round of Jeopardy Unfolds; Watson Dominates Give Chromium-Based Browser Desktop Notifications a Native System Look in Ubuntu Chrome Time Track Is a Simple Task Time Tracker

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• Problems after installing Ubuntu 11.10

  - by Andrew Orr

  I'm having trouble with Ubuntu 11.10. It has to do with nomodeset. After I boot into Ubuntu, it goes to a purple screen for about 10 seconds and then goes blank. After that nothing happens. I've read other people's questions about this and I know it has to do with enabling nomodeset. This worked for me when I was using the LiveCD mode, but now Ubuntu is permanently installed as a dual-boot system. Going into recovery mode doesn't work, pressing "e" in the boot loader and writing nomodeset after quiet splash doesn't work either. Holding shift any time it's booting doesn't work. I don't know what to do anymore. I have an HP Pavilion dv6 laptop with an AMD A6-3400M CPU, and my GPU is an AMD Radeon HD 6520G. I've never worked with Linux before so taking me through this step-by-step would be great. Thanks!

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• How to fix hibernate / suspend with proprietary nVidia driver?

  - by Chris

  Hi, I've just got an Dell Precision M6500 that comes with an nVidia card. Together with Kubunutu 10.10 and the proprietary nvidia driver suspend to disk or RAM does not work. It's allways ending with a running system and a locked screen (i.e. I can just enter my password and everything is as before - it's never sleeping) Can someone please help me to debug this issue? Where should I look for information? None of the log files seem to show an obvious error... Thanks, Chris

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• effect and model vertex declaration compatibility

  - by Vodácek

  I have normal model drawing code. When I try to draw model without UV coordinates I got this exception: System.InvalidOperationException: The current vertex declaration does not include all the elements required by the current vertex shader. TextureCoordinate0 is missing. at Microsoft.Xna.Framework.Graphics.GraphicsDevice.VerifyCanDraw( Boolean bUserPrimitives, Boolean bIndexedPrimitives) at Microsoft.Xna.Framework.Graphics.GraphicsDevice.DrawIndexedPrimitives( PrimitiveType primitiveType, Int32 baseVertex, Int32 minVertexIndex, Int32 numVertices, Int32 startIndex, Int32 primitiveCount) at Microsoft.Xna.Framework.Graphics.ModelMeshPart.Draw() at Microsoft.Xna.Framework.Graphics.ModelMesh.Draw() ... I know what cause the exception, but is possible to avoid it? Is possible to check model before drawing it with current shader for vertex declaration compatibility?

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• Ubuntu on a USB

  - by Sander de Lange

  I was just wondering if anyone had a good experience with Ubuntu on a flash drive... I'm installing it right now. I formatted my 16GB flash drive to Ext2 because the default file system is ext4 but that one is journaled and USB flash drives do not like journaling. I want to use this to learn Java and Ubuntu seems to be a great OS for this. I (obviously) have USB 2.0 ports where I will put the USB in. How is the boot time of Ubuntu on a USB?

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• I want a non admin user to install software. What commands do I need to add to sudoers?

  - by Chance

  I want to edit the /etc/sudoers file so that a non-admin user can install software via the Software Center in Linux Mint 10. The reason for this is that I want a user to have the capability to install programs, but not make any other configuration changes to the system. So far I have the following (some of these may not make sense, I was just trying whatever I thought of) username ALL= /usr/bin/aptitude username ALL= /usr/bin/dpkg username ALL= /usr/local/bin/apt-get username ALL= /usr/lib/linuxmint/mintUpdate/mintUpdate.py username ALL= /usr/bin/software-center username ALL= /usr/bin/synaptic So far, it allows me to do updates without asking for my password, but it will not let me install software without entering an admin password. I am aware of this question, How can I set the Software Center to install software for non-root users?, but this goes the route of modifying the PolicyKit, whereas I'm interested in a sudo solution, because it seems a simpler way to go.

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• The Best Websites for Creating and Sending Free eCards

  - by Lori Kaufman

  With the holiday season upon us, it’s time to pull out the holiday card list and get writing. However, how would you like to save some money this year and also help save the environment? We’ve assembled a list of websites that allow you to create electronic cards (eCards) you can send (using email, Facebook, or other electronic delivery methods) to friends and family for the holidays, or for any other occasion. Each site listed provides free eCards you can send or has a free option, as well as a paid option. 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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• Tab Sweep: HTML5 Attributes, MDB, JasperReports, Delphi, Security, JDBCRealm, Joomla, ...

  - by arungupta

  Recent Tips and News on Java, Java EE 6, GlassFish & more : • JMS and MDB in Glassfish for 20 minutes (nik_code) • Installing Java EE 6 SDK with Glassfish on a headless system (jvmhost) • JSF + JPA + JasperReports (iReport) Part 2 (Rama krishnnan E P) • Serving Static Content on WebLogic and GlassFish (cdivilly) • Whats the problem with JSF? A rant on wrong marketing arguments (Über Thomas Asel) • JPA 2.1 will support CDI Injection in EntityListener - in Java EE 7 (Craig Ringer) • Java Delphi integration with Glassfish JMS OpenMQ (J4SOFT) • Java EE Security using JDBCRealm Part1 (acoustic091409) • Adding HTML5 attributes to standard JSF components (Bauke Scholtz) • Configuring SAS 9.1 to Use Java 5 or above on Windows (Java EE Tips) • Inject Java Properties in Java EE Using CDI (Piotr Nowicki) • NoClassDefFoundError in Java EE Applications - Part 2 (Java Code Geeks) • NoClassDefFoundError in Java EE Applications - Part 1 (Java Code Geeks) • EJB 3 application in Glassfish 3x (Anirban Chowdhury) • How To Install Mobile Server 11G With GlassFish Server 3.1 (Oracle Support) • Joomla on GlassFish (Survivant)

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• Walking Through a Seaside Village Wallpaper

  - by Asian Angel

  Sea View [DesktopNexus] Latest Features How-To Geek ETC How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware The Citroen GT – An Awesome Video Game Car Brought to Life [Video] Final Man vs. Machine Round of Jeopardy Unfolds; Watson Dominates Give Chromium-Based Browser Desktop Notifications a Native System Look in Ubuntu Chrome Time Track Is a Simple Task Time Tracker Google Sky Map Turns Your Android Phone into a Digital Telescope Walking Through a Seaside Village Wallpaper

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• How can I selectively update XNA GameComponents?

  - by Bill

  I have a small 2D game I'm working on in XNA. So far, I have a player-controlled ship that operates on vector thrust and is terribly fun to spin around in circles. I've implemented this as a DrawableGameComponent and registered it with the game using game.Components.Add(this) in the Ship object constructor. How can I implement features like pausing and a menu system with my current implementation? Is it possible to set certain GameComponents to not update? Is this something for which I should even be using a DrawableGameComponent? If not, what are more appropriate uses for this?

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• Delete key assigned to a keyboard shortcut and now doesn't work

  - by Erez Schatz

  I posted this to the ubuntuforums, but got no answer there, so I'm trying here: While going over the keyboard shortcuts (System Preferences Keyboard Shortcuts), I accidentally assigned the delete key to a shortcut. I backspaced and cancelled, but next time I pressed "delete" the key didn't work. I tried creating a new shortcut called Delete and this got me a weird pop up saying "Error while trying to run (Delete) which is linked to the key (Delete)". I removed the shortcut, but it's still assigned. I deleted the custom shortcut, but to no avail. Any ideas? this drives me bonkers, as it's such a used key

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• Change hotkeys/shortcut keys for volume control

  - by Daniel le Rouge

  I need to change the hotkeys for volume control, since I suffer from a bug, which disallows me to use the standard function hotkeys of my notebook. Since I have updated I to Oneiric, I am not able to change the settings for the hotkeys. It is neither possible in system settings nor in gconf-editor. Current buggy configuration: Volume mute: Fn + F3 Volume down: Fn + F4 Volume up: Fn + F5 Desired configuration: Volume mute: Ctrl + F3 Volume down: Ctrl + F4 Volume up: Ctrl + F5 If you need further information, I will be happy to provide it. I tried to overwrite the standard settings by creating a new one in the “Custom shortcuts” category. Even this attempt is unsuccessful. Is there a possibility to access this menu as root?

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• Some websites are not opening in any web browser (firefox/chrome). What should I do? [closed]

  - by Jamal

  Some websites are not opening in my system. I am using Ubuntu 12.10. Earlier, when I was using Ubuntu 10.10,11.10 there was no such issue. The problem was started in ubuntu 12.04, but it remained the same even after formatting and installing ubuntu 12.10. I have tried Firefox as well as Chromium and I am sure the issue is not with the browser. same websites are opening perfectly with Windows. Google, Twitter and Ubuntu related websites are running perfect. Other websites like www.downrightnow.com, easy-mantra.com, facebook.com, sourceforge.net are not opening. Installed dual boot with win xp. Ubuntu 12.10 is 64 bit. Processor Intel core i3, RAM 4GB. $ cat /etc/resolv.conf <-- Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) -- DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN -- output --> nameserver 127.0.1.1

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• JavaOne - Java SE Embedded Booth - Servergy Micro Server

  - by David Clack

  Hi All,  So it's been awhile, I've been working with all the ARM and Power Architecture partners we have now on testing Java SE Embedded. We will have a Java SE Embedded for ARM and PPC at Java One next week, I'll be bringing in some of the great ARM and PPC systems to demonstrate.  The first system I'd like to tell you about is a really cool 8 core Power Architecture Micro Server from a company in Dallas called Servergy. Java One will be it's first public outing, Bill Mapp the CEO will be doing a talk at the Java Embedded @ JavaOne conference in the Hotel Nikko, right next door to the JavaOne show in the Hilton. To read more about Servergy https://www.linux.com/news/enterprise/cloud-computing/641488-linux-based-servergy-advances-data-center-efficiency http://www.servergy.com/ If you are registered at JavaOne you can come over to the Java Embedded @ JavaOne for $100 Come see us in booth 5605 See you there Dave

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• How to set-up my own cloud server?

  - by WMRKameleon

  I am a student, 17 years of age and wanting to access all of my files at greatest ease. i would like to have a system like this: Computer A, B and C are the computers on which I work and to which the files should be available. Server A is located in my room and I can install Ubuntu on it. What is the goal? I want to edit files on computer A (e.g.) and computer A should update the file on my server, afterwards the server should update the files on computer B and C. (The same goes for editing files on computer B, afterwards the server has to update the files on A and C.) How am I able to set-up a network like this? It is about music, movies, pictures, documents... Thanks for those who are going to reply!

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