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• Is it possible to lose some directories when upgrading from 11.10 to 12.04?

  - by maythux

  Last day I upgraded my Ubuntu 11.10 desktop to Ubuntu 12.04. I was running a KVM virtual about 7 machines and managed by virt-manage software. Anyway when I finished upgrading I found that virt-manager is not working. So I had to reconfigure it again and install some other missing packages that was deleted! Eventually, I managed to solve this issue. Then I started to restore my virtual machines. I restored 2 machines without any problems. The third and fourth ones (Windows) made a check disk that lasted more that 6 hours but finally it worked. Other machines I can't find their attached hard disks. I don't know what happened but I can't find those files. Does upgrading delete files? Is there anyway to restore those files?

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• Hardware refresh of Solaris 10 systems? Try this!

  - by mgerdts

  I've been seeing quite an uptick in the people that are wanting to install Solaris 11 when they are doing hardware refreshes.  I applaud that effort - Solaris 11 (and 11.1) have great improvements that advance the state of the art and make the best use of the latest hardware. Sometimes, however, you really don't want to disturb the OS or upgrade to the a later version of an application that is certified with Solaris 11.  That's a great use of Solaris 10 Zones.  If you are already using Solaris Cluster, or would like to have more protection as you put more eggs in an ever growing basket, check out solaris10 Brand Zone Clusters.

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• ASP.NET Pivot Grid: How To Enable Compact Layout Feature

  Check out this short ASPxPivotGrid video that shows you how to enable the new compact layout mode: The new compact layout mode helps you save space. And its easy to setup. Watch the short ASPxPivotGrid Compact Layout video and then drop me a line here with your thoughts. Thanks. DXperience? What's That? DXperience is the .NET developer's secret weapon. Get full access to a complete suite of professional components that let you instantly drop in new features, designer styles...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Sharing between new install and Windows 7 boxes not working, either direction. Printers & folders

  - by Steve

  I don't seem to be able to share between my Ubuntu (fresh install) and any of my Windows machines. I tried using this guide: How to Share Folders in Ubuntu & Access them from Windows 7. The problems is that I cannot see the Ubuntu machine in my network pane on the Windows machine. Any Ideas of what I should check? Ultimately what I am looking to do is make mobile media server that I can put in the Van, attach a WiFi router, and stream to an iPad, tablet, laptop, etc. Any advice on setting this up would be appreciated.

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• SQL in the City - Seattle 2012

  Start the week in Seattle off with a free day of training on Nov 5, 2012 with SQL in the City. Grant Fritchey, Steve Jones and more will be talking SQL Server in the Pacific Northwest. Join us and debate and discuss SQL Server the Red Gate Way. Are you sure you can restore your backups? Run full restore + DBCC CHECKDB quickly and easily with SQL Backup Pro's new automated verification. Check for corruption and prepare for when disaster strikes. Try it now.

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• Upgrade to 13.04 was not successful. Gstreamer not working. What do?

  - by user172214

  I finally decided to upgrade to 13.04. In the middle of the installation my computer froze completely, and so I decided to force quit. I log back on, and notice that the login says 13.04, but not everything was updated. So I run the software updater. Some of the stuff gets updated, but not everything, I suppose. I try to run Rhythmbox, but it says that it's not able to form playback, and that the Gstreamer was messed up, and to please check installation. I don't know what other bugs maybe running. That's just the first I've encountered. The software updater won't let me update anymore because it says the updates need authentication.

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• Problem with Moonlight

  - by Oliverka

  Hello, I'm watching The Bold and the beautiful on the site: http://www.tvp.pl/seriale/obyczajowe/moda-na-sukces/wideo Yesterday I wanted to view next episode, however it didn't work. I checked various episodes from other points in time and none works. The "dots" that appear when a Silverlight video is loading are present, but after them there is only black screen (of death). I'm using Ubuntu Lucid Lynx 32 bit with GNOME2 and firefox 3.6. I have all updates done. Could somebody check if any video is working for them and tell me their setup, please? Best regards. Oliverka

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• How does N create it's tileset?

  - by Darestium

  I am trying to recreate a Multiplayer version of the popular flash game N in java. I have a single question however. Are the tiles for the games draw or are they defined with mathamatical formulars/In code? Since I do see how they would scale up in flash if they were not. So if anyone has any ideas how I should go about creating the tileset, or how they are created in the game please let me know. You can check out the game here.

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• How can I tell what error grub has when I can't read what it's saying?

  - by RolandiXor - The Ice Man

  Grub won't allow me to get into any systems on my HP dv7 (it runs 12.10). As the screen is broken, I can't read what the error is. Nothing works, not even the recovery mode. It gives me some error about "cannot find" (I think) and Press any (I guess key?) When a press a key I'm dropped back to the menu. At the moment I'm trying all the recovery options I know. However, it would be great if someone could tell me how to know what error grub is facing from a live cd or something (maybe a log file or something could help)? NB: I can view the filesystem from a liveCD, and I did check the filesystem - it was clean.

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• adding pls to rhythmbox

  - by tomasz74

  I try to add .pls radio station to rhythmbox. I download the file and I click musicimport file but nothing happen. I added one station before and it works fine but now it simply does not work. Also when I try to get from the file, click on open with rhythmbox I have the error: Couldn't start playback Problem occurred without error being set. This is a bug in Rhythmbox or GStreamer. I have all medibuntu installed and I have one radio station already playing. I don't know how to proceed from now and what should I check if there is something to fix. Anyone get similar problem? (Ubuntu 12.04 64-bit Gnome3)

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• Vector reflect problem

  - by xdevel2000

  I'm testing some vector reflection and I want to check what happens when a ball collides with a paddle. So if I have: Vector2 velocity = new Vector2(-5, 2); position_ball += velocity; if (position_ball.X < 10) { Vector2 v = new Vector2(1,0); // or Vector2.UnitX velocity = Vector2.Reflect(velocity, v); } then, correctly, velocity is (5,2) after Reflect, but if I do: if (position_ball.X < 10) { Vector2 v = new Vector2(1,1); velocity = Vector2.Reflect(velocity, v); } then velocity is (1,8) and not (5, -2) that is the solution of reflection equation R = V - 2 * (V . N) Why is that?

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• Global Adopt a JSR Program Update

  - by heathervc

  The Global Adopt a JSR program, combining efforts of SouJava and London Java Community,  is an excellent place to get some Java User Group (JUG) resources for JSRs.  It also has the potential to act as an extra set of eyes, ears and volunteers for JSRs. The Global project to go to is at: http://adoptajsr.java.net.  The wiki page explaining the whole program and benefits to Spec Leads and EG's can be found there, including: The mailing list: [email protected] . Portugese speakers-mainly Brazlian JUG members-have their own mailing list and more language lists may be added as required. The IRC channel is at adoptajsr on irc.freenode.net Also check out this InfoQ article with Martijn Verburg about the London Java user group, the Adopt a JSR program, the JCP and Oracle’s handling of the Java community.

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• How to make safe and secure forms in asp.net MVC 3

  - by anirudha

  the asp.net application need all kind of security. unsecure forms may be influence by XSS [cross site scripting] there is some way to solve these type of problem in MVC. first sollution is that use <%= Html.AntiForgeryToken() %> for make secure from cross site scripting. it’s work by machine key in MVC. well you can valid them whenever you got respond from client. you can apply by this attribute on action you give the response behalf of form submission [ValidateAntiForgeryToken] you can secondly use authorize attribute where you can make own definition of authorize attribute in asp.net mvc for more info read david’s post well I am use my own custom attribute who use a different type of authorization :- the who controller use a attribute I put their and the attribute I put their have a logic and logic check the cookie in request who make sure that request they got from user.

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• Can't install ubuntu along windows 7

  - by Mark

  I boot from a DVD the last version of ubuntu 12.04 x64(because i have 8g. of ram) ,hit install Ubuntu ,check Install Along windwos 7(or something like this ,anyway the first option) and the button in the bottom right corner says "Restart to install" or just restart...i cant remember. So ,i hit the button than ,the screen goes black ,some proceses are stopped and on the middle of the screen it writes like this " Please remove installation media and close the tray (if any) then press ENTER: " The DVD rom opens and i remove the dvd ,close the tray ,pushing enter and the windows is starting ,no instalation ,no file copied to my PC ,nothing.

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• Handling hitboxes

  - by TheBroodian

  So I have an issue that I'm laughing at myself about, because it really seems like it should be something that I should be able to figure out pretty quickly. I am designing a 2D action platformer; I have a playable character, and a dummy 'punching bag' character for testing purposes that I've created. I've just gotten enough of both of them done that I can start prototyping and testing them in runtime. Then I realized- neither of them have references of each other (intentionally so), so how do I check for hitboxes stored within my playable character from my dummy character? Long story short, how do I make my dummy know when he's been punched by my hero?

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• How to switch language spellingcheck on the fly when changing keyboard with alt-shift?

  - by Kosmas Papagiannis

  i just recently installed ubuntu 11.04, english version that comes with libreoffice. I also installed Greek language. Is there some way to make Writer recognize my input language (English - Greek) and apply spelling check on the fly, according to my input language? For example, i type a sentence in English, then switch keyboard input (Alt-Shift) and type a sentence in Greek. Writer does no recognize the Greek sentence and underlines it red. MS Office and OO under Windows does it... As soon as you change input language (keyboard layout), the real time spelling checker changes also between languages... Thank you in advance...

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• Unity Launcher missing and Terminal shortcut stopped working

  - by Diana

  When I restarted my Ubuntu after it being updated, I found the Unity launch bar was gone. I tried looking up several solutions online, blindly typing in the commands that others suggested, and I found after the umpteenth time rebooting after typing in another foreign command, I found I couldn't even open up the terminal with the Ctrl+Alt+t shortcut either and I have no idea how to fix this. This was the last set of instructions I remember following before terminal stopped opening. Install CCSM sudo apt-get install compizconfig-settings-manager And then run it in terminal (Ctrl+Alt+t) ccsm Then search for "Ubuntu Unity Plugin". If it's not checked, check it. If it is checked you may have another issue. Try restarting compiz: kill -9pidof compiz` This will kill it, it should start up again, if it doesn't, CTRL+ALT+F2 and then type: sudo service lightdm restart to restart the window manager. Go back to the terminal and run: unity --reset

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• Mouse Not Detected & Network Not Connected After Installing Ubuntu 12.04 Desktop via Live USB

  - by albus_severus

  I just recently (+- 30 minutes ago) install Ubuntu 12.04 Desktop on my pc (dual boot) via Live USB (i check the "automatically install upgrade" option when installing it). unfortunately, at the login screen after the installation finished (after reboot), i cannot use my mouse! also, an error message occur saying that network connection is not available. but, when i restart again and using the "try Ubuntu without installing" in the Live USB, the problems didn't occur. i tried to googling this but failed to find any solution. and yes, i am totally green on Ubuntu and Linux. so, please, help me on this. thanks in advance.

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• How to ensure that the domain name you are registering won't have licensing or trademark issues?

  - by pokemarine

  What are the conventions of domain registering? What domains and names someone can use as a brand/name for a website? How to determine if the name selected is available and there will be no legal issues later? Example.: A new website being developed, it needs a name, isn't it? So the team who is responsible for it decides, the name will be "WooLaCocaCola", means I should register the www.woolacocacola.com domain for the site. Let's say the domain is free to register, but that doesn't mean that the name as it is can be used, how can I check something like this?

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• SmartSync Printing In ASP.NET Scheduler Reporting v2010.1

  Check out this new SmartSync printing feature of the ASPxScheduler that helps you to print a scheduler report in a Tri-fold style. Hows It Work? If several scheduler report controls are placed on the same report, the scheduler adapter on the report coordinates how the controls will iterate through the schedule data. The view control on the report that has the smallest period becomes the 'principal' or 'driving' control. It starts the iteration, and other controls on the page are...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How do I ensure all of the ports on my machine are open or reachable?

  - by Rev3rse

  I was testing port connectivity on my machine because WoW (which uses TCP ports 3724, 6112, and 6881-6999) couldn't connect to the Internet. So I downloaded PFPortChecker application and ran it using Wine (v1.3). After I tried to check every port, it seems like they're not reachable/closed. Why is that? My firewall is disabled so why is this happening? How can I open these ports and how can I see if these ports are opened or not? Also, how can I determine which application is using them?

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• Knockback enemy based off of direction sprite is facing

  - by pengume

  Hey Everyone, Today I am trying to make it so if I hit the enemy then the enemy well be knocked backwards in the direction the sprite is facing. I am rotating the sprite around 360 degrees using a joystick on the screen and wanted to know the best practice or ways to accomplish this. I have come up with a few ideas but none of them make use of the sprites angle he is facing just a check to see if I hit the bottom then move him upward and so forth. I am just stumped on how to apply the sprites angle to the enemies x and y coordinate and move him accordingly. Has anyone tried this and have suggestions or things to look for? Thanks in advance.

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• How do people maintain their test suite?

  - by Ida

  In particular, I'm curious about the following aspects: How do you know that your test cases are wrong (or out-of-date) and needed to be repaired (or discarded)? I mean, even if a test case became invalid, it might still pass and remain silent, which could let you falsely believe that your software works okay. So how do you realize such problems of your test suite? How do you know that your test suite is no longer sufficient and that new test cases should be added? I guess this has something to do with the requirement changes, but is there any systematic approach to check the adequacy of test suite?

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• Playing with Windows Phone Developer Tools CTP

  tweetmeme_source = 'alpascual'; Installation tips. If Visual Studio 2010 Professional or higher is already installed on your development computer, an add-in for Visual Studio 2010 Professional is automatically installed as well. The installation took an hour on a Windows 7 with 4 GB of RAM and rebooted the computer once. Something tells me the installer still needs some work.   Lets Write some code Everything installed, lets check if Visual Studio 2008 still works with Silverlight...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Ubuntu 12.10 64b does not shutdown

  - by user108264

  I am a new linux user so i am not familiar with what actually is needed to check. When shutting down or trying to restart i get a screen with yellow letters and the system does not close or restart. I have to shut down manually. I can't type all the numbers but i will give the last ones. [90102.232650] [ end-trace 435966f5b367871 ] this seems to have happened after i downgraded the xorg so i can get drivers for my ATI card(4850HD). The suspend command works fine.

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