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  • USB-live does not save files between sessions

    - by Mads Skjern
    I created a USB-stick with Ubuntu, using the recommended tool "Startup Disk Creator" and the image for Ubuntu 13.10. The very simple interface looks like this: There can't be much to misunderstand in this GUI. I have chosen to create a USB stick with a live version of Ubuntu, which will save files and settings from session to session, on the USB drive, right? Well, it just doesn't save anything. I go in, create a file on Desktop, restart and it's gone. I did the whole procedure three times, i.e. first creating the USB, then testing if I could save. Have I misunderstood something?

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  • The October 2013 Oracle Linux Newsletter is Out!

    - by Chris Kawalek
    The October 2013 edition of the Oracle Linux Newsletter is here! This issue is absolutely packed with information. Some highlights: Information on the "Why Choose Oracle Linux for Your Oracle Database 12c Deployments?" webcast coming up on October 30. Now Available: Unbreakable Enterprise Kernel 3 Oracle Linux Highlights from Oracle OpenWorld 2013 Oracle Linux Now Available on Microsoft Azure Faster Downloads of Oracle Linux Updates Plus, videos, white papers, customer spotlights, information on training, and much more! You can sign up to get the newsletter in your inbox automatically, or you can read this edition online right now. -Chris 

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  • Silverlight: Creating great UIs

    - by xamlnotes
    I was always told I was left brained and could not draw. And I bought into that view. Somewhere down the road years ago I did learn to play guitar and to play by ear at that.  Now that’s not all left brained so my right brain must be working.  About a year ago, my good friend Billy Hollis turned me own to a book by Betty Edwards (http://www.drawright.com/).  I started reading this and soon I found my self drawing on napkins in restaurants while we were waiting on food and at many other times too.  Dang’d if I could not draw! Check out my UI article at Dev Pro Connections (Great UIs article) on some of my experiences. Heres a few more links that are really cool too. Cool color combinations web site Simply painting is awesome. Saw this guy on tv. This site has some great tools for color contrasting

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  • Isometric algorithm producing tiles in wrong draw order

    - by David
    I've been toying with isometric and I just cant get the tiles to be in the right order. I'm probably missing something obvious and I just can't see it. Even at the risk of looking stupid, here's my code: for (int i = 0; i < Tile.MapSize; i++) { for (int j = 0; j < Tile.MapSize; j++) { spriteBatch.Draw( Tile.TileSetTexture, new Rectangle( (-j * Tile.TileWidth / 2) + (i * Tile.TileWidth / 2), (i * (Tile.TileHeight - 9) / 2) - (-j * (Tile.TileHeight - 9) / 2), Tile.TileWidth, Tile.TileHeight), Tile.GetSourceRectangle(tileID), Color.White, 0.0f, new Vector2(-350, -60), SpriteEffects.None, 1.0f); } } And here's what I end up with: messed up map Yep, bit of an issue. If anyone could help, I'd appreciate it.

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  • Why does wifi hotspot doesn't work correctly?

    - by Habi
    I have created the wifi hotspot. In windows, it used to display wifi signal on my nokia C3 but after creating wifi hotspot from ubuntu, I am facing certain problem. Nokia C3 doesn't even gets wifi signal. But wifi signal appears in my samsung mobile GTS3-850 and I can access wifi if I put wifi security option to "none" On the other hand, if I create password then Nomatters, if I type right password or not, it doesn't connect to that wifi. Note : I use Wimax to access internet.

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  • Too early to apply for post-graduation jobs?

    - by Rob Lourens
    I graduate in May 2012. I'm on an internship with one company right now that will probably make me an offer in August, but I will only have a couple weeks to take or leave it. I'm not sure whether I'll want to accept it- it will depend on the specifics. So I plan to apply for other jobs to see if I can get another offer, but would it be too early to be applying over the next few weeks when I wouldn't start until next May at least? I hate to turn down an offer having nothing else lined up. I'm a software engineer at one large software company and I would apply for jobs at other large software companies. I assume a smaller company would work on a much shorter hiring schedule, but maybe large companies wouldn't mind hiring 8-9 months in advance? I also hate to start applying any earlier than I have to- I know I'll only have more experience and be more employable with time.

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  • Upgrade from 10.10 to 11:04 to 11.10. X starts, Unity desktop not there

    - by Stefan Lasiewski
    I upgraded my Ubuntu Desktop 10.10 system to 11.04 and then 11.10. Now, when I start Ubuntu, the Unity desktop doesn't start correctly. Here's what I do: Start computer I log in via the GUI login screen The X Window System starts. I can see an arrow icon for the mouse, and can move it around the screen. Nothing else starts. There are no desktop icons, no launcher, no taskbar, etc. Right clicking on desktop does nothing. I've tried some common keyboard shortcuts ("Alt-tab" "Ctrl-Alt-T" "Ctrl-Alt-Backspace") but nothing happens. If I go to another Virtual Console, and run the command unity, the Unity desktop will start on my primary X desktop. However I'm seeing many problems like windows which are only half-drawn, some applications run without the familiar "Minimize, Maximize, Close" What's happening here? It seems that the X Window System started, but Unity did not start? How can I debug this?

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  • How can I configure the login screen to be displayed in portrait orientation?

    - by rocket101
    I just started using linux, and I have one question. I have a monitor that I rotated 90? clockwise, so it, being rectangle shaped, is taller than it is wider. Using the system settings in Ubuntu, I set it up, and it works great, except the login screen and loading screen are not rotated right. They are rotated in the "normal" way. Is this just a glitch, or is there some setting I overlooked? I am using the open source drivers, and it is an ATI card, if that matters.

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  • How to get useful feedback/bug reports from users

    - by Mikael Eliasson
    I'm sure most webmasters have recived a mail like this: Creating [insert item here] is not working! When you check it out there is no general problem with the function but rather the user has discovered an edge case. Almost every mail I get is like this and in the long run it gets a bit annoying to always have to ask the user for more information. Is there anything I can do to get my users provide more useful feedback? Right now I have a mailto: for the webmaster mail in the page footer. I was thinking of changing this so that they have to report through a form on the site. Anyone got any experience with this? Do you get better/more reports by having a feedback form instead of giving the users the email?

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  • How to fix the copy/paste-pattern?

    - by Lenny222
    Where i work, people (consultants) feel pressed to release features as fast as possible. So instead of spending too much time on thinking about how to do things the right way or because they don't want to break anything, code gets copied from different modules and modified. It's not easy to prevent this, since the code base is open to the whole company. Lots of people work on this. Now that the mess is there already, what is the best way to remove those redundancies without breaking too much?

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  • Designing an API on top with Java RMI and Rest APIs

    - by user1303881
    I'm working on the backend of a java web application. We have a document repository (Fedora Commons specifically) where we house xml files. I want to abstract the API of the repository internally so that we aren't tightly coupled to one product. I'd also like to give the flexibility of connecting to to a repository via Java RMI or REST APIs. I was hoping to get advice or resources on how to implement something like this. My thought it that I'd have some abstract repository class that had methods like getRecord, updateRecord, and deleteRecord. In the constructor I would pass the URI for the repository and the API method and port. This would allow some flexibility in the future so that if the REST api became more practical, but allow the flexibility or using RMI which could (should?) have better performance. Am I over thinking this or am I on the right path?

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  • Faulty memtest result

    - by dhojgaard
    I've been a bit suspicious about my RAM lately. They seem not work like i expect them to. For instance i run a lot of Virtual Test Environments in VMware Workstation and lately Ubuntu starts to lag just running 4 virtual machines each dedicated 512 MB. BTW im having 6GB memory on my laptop. This did not use to be a problem for me on my last laptop that even had a lot lower CPU resources. So i was led to try a memtest after reading some websites about RAM testing. So i did a memtest overnight but when i woke up this morning i was just looping and i could not Exit or do anything. It was just looping the number of errors besides test 7 which you can see in the lower right part of the screenshot. Can anyone interpret this screenshot for me? Do i have a faulty set of RAMs?

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  • Creating a curved mesh on inside of sphere based on texture image coordinates

    - by user5025
    In Blender, I have created a sphere with a panoramic texture on the inside. I have also manually created a plane mesh (curved to match the size of the sphere) that sits on the inside wall where I can draw a different texture. This is great, but I really want to reduce the manual labor, and do some of this work in a script -- like having a variable for the panoramic image, and coordinates of the area in the photograph that I want to replace with a new mesh. The hardest part of doing this is going to be creating a curved mesh in code that can sit on the inside wall of a sphere. Can anyone point me in the right direction?

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  • Why does pasting sometimes not work in gnome-terminal?

    - by Matthew
    Ctrl + Shift + C and Ctrl + Shift + V are supposed to replace the normal Ctrl + C and Ctrl + V in gnome-terminal. Sometimes they work, but usually they have no effect. What are some potential reasons for this? I'm not sure what other information to give. Edit: It seems that manually selecting Paste from the Edit menu does not work either. Right click > Paste works, but Edit > Paste does not. Copying works, but pasting does not. Also, I have vi-mode enabled (set -o vi in my ~/.bashrc). Could this have something to do with it? Edit: Here is a video demonstrating the problem. I used Screenkey (in "raw" mode, to catch "shift") to show what keys I am pressing.

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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? Update: whenever I get the menu problem with dynamic templates, I also seem to get a broken page (in Chrome, IE, etc) with simple templates - see second screenshot. Does anyone having this issue?

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  • Moving AI in a multiplayer game

    - by Smallbro
    I've been programming a multiplayer game and its coming together very nicely. It uses both TCP and UDP (UDP for movement and TCP for just about everything else). What I was wondering was how I would go about sending multiple moving AI without much lag. At first I used TCP for everything and it was very slow when people moved. I'm currently using a butchered version of this http://corvstudios.com/tutorials/udpMultiplayer.php for my movement system and I'm wondering what the best method of sending AI movements is. By movements I mean the AI chooses left/right/up/down and the player can see this happening. Thanks.

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  • Touchpad in Sony Vaio E14 - cannot click with a finger and drag with another - Ubuntu 12.04

    - by Nabeel
    I had the following issues with my Sony Vaio E14115's touchpad on Ubuntu 12.04: Right click not working Vertical scrolling not working Then I followed these steps to fix it: Downloaded a patch for Psmouse sudo apt-get install dkms build-essential cd ~/Desktop tar jxvf psmouse-3.2.0-24-generic-pae.tar.bz2 sudo mv psmouse-3.2.0-24-generic-pae /usr/src cd /usr/src sudo chmod -R a+rx psmouse-3.2.0-24-generic-pae sudo dkms add -m psmouse -v 3.2.0-24-generic-pae sudo dkms build -m psmouse -v 3.2.0-24-generic-pae sudo dkms install -m psmouse -v 3.2.0-24-generic-pae sudo modprobe -r psmouse sudo modprobe psmouse This fixed me the problems of Rightclick and vertical scrolling. But I still have an issue of not able to click and drag ie Clicking the leftmouse button and dragging with another finger. It doesn't move! Maybe it doesn't detect the 2nd finger. When I check the capabilities of my Synaptics touchpad by using xinput list-props "SynPS/2 Synaptics TouchPad"|grep Capabilities I get the following output: Synaptics Capabilities (304): 1, 1, 1, 1, 1, 1, 1 Please help me out.

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  • Power button missing

    - by Christophe De Troyer
    An almost clean install of Ubuntu 13.10 keeps hiding the power button. I noticed before that my clock and power button were missing in the right top corner. I rebooted my system and they were back. Now I see my power button only is missing. How do I go about fixing this? I can't keep rebooting, can I? The latest thing I did was removing Ubuntu One: Removing Ubuntu One I don't think I did something that might've tinkered with these settings though.

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  • Why is a linked list implementation considered linear?

    - by VeeKay
    My apologies for asking such a simple question. Instead of posting such basic question in SO, I felt that this is more apt a question here. I tried finding an answer for this but none of them are logically appealing or convincing to my understanding. Typically, computer memory is always linear. So is the term non linear used for a data structure in a logical sense? If so, to logically achieve non linearity in a linear computer memory, we use pointers. Right? In that case, if pointers are virtual implementations for achieving non linearity, Why would a data structure like linked list be considered linear if in reality the nodes are never physically adjacent?

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  • Installing updates from hard drive [closed]

    - by Ajay
    I am using Oneiric Beta 2. Installed it yesterday. Then downloaded 350+ MB of updates and installed it. Then when I tried to auto-mount my drives using Storage manager, I screwed up and the system will boot right up to the Ubuntu Splash screen, then turn off. Anyways planning to reinstall Ubuntu again. But I do not want to have to download the updates again. I have a copy of all the downloaded update files with me. Can anyone tell me how I can install the updates from the hard drive without downloading them again ?? Thanks in advance.....

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  • After executing a command in the terminal, I sometimes can't execute another

    - by jreed121
    First off sorry for the noob question, I'm sure it's been asked before but I have no idea how to phrase it eloquently... Sometimes when I open/run/execute (unsure of proper term) an application (?lol) from the terminal like geany ie: geany filename.php or maybe run a node.js script: node server.js The command will execute fine, but I'm then left without the ability to execute any other commands unless I open another terminal. my root@pcname:~$ is gone and when I try typing in something else and hitting Enter it just breaks to the next line. I've noticed that sometimes I can hit CTRL+D and it'll give me my prompt back (sorry is prompt even the right name for it?) So could someone please explain why this is happening and how I can get back to the prompt without opening another terminal. Thanks, and sorry again for my noobery.

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  • Tip #15: How To Debug Unit Tests During Maven Builds

    - by ByronNevins
    It must be really really hard to step through unit tests in a debugger during a maven build.  Right? Wrong! Here is how i do it: 1) Set up these environmental variables: MAVEN_OPTS=-Xmx1024m -Xms256m -XX:MaxPermSize=512mMAVEN_OPTS_DEBUG=-Xmx1024m -Xms256m -XX:MaxPermSize=512m  -Xdebug (no line break here!!)  -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=9999MAVEN_OPTS_REG=-Xmx1024m -Xms256m -XX:MaxPermSize=512m 2) create 2 scripts or aliases like so:  maveny.bat: set MAVEN_OPTS=%MAVEN_OPTS_DEBUG% mavenn.bat: set MAVEN_OPTS=%MAVEN_OPTS_REG%    To debug do this: run maveny.bat run mvn install attach your debugger to port 9999 (set breakpoints of course) When maven gets to the unit test phase it will hit your breakpoint and wait for you. When done debugging simply run mavenn.bat Notes If it takes a while to do the build then you don't really need to set the suspend=y flag. If you set the suspend=n flag then you can just leave it -- but only one maven build can run at a time because of the debug port conflict.

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  • About uninstallation of Ubuntu to allow dual-boot

    - by Palas Ghosh
    I had windows XP and windows 7 previously. I wanted to keep windows XP and replace windows 7 by Ubuntu in a specific drive of hard disk. During installation of Ubuntu I found option replace windows 7 by Ubuntu and I did it. now I found that windows XP has also gone and Ubuntu is occupying the area of whole hard disk. Now I want to uninstall or format the hard disk because Ubuntu is new to me and I am not comfortable with Ubuntu only right now. I want to keep both windows XP and Ubuntu. so how can I uninstall Ubuntu or format hard disk?? please help....Is the formatting is possible by inserting windows XP CD?? Or is there any other way so that without uninstalling Ubuntu I can also install windows XP?

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  • Does my JavaScript look big in this?

    - by benhowdle89
    As programmers, you have certain curtains to hide behind with your code. With PHP all of your code is server side preprocessed, so this never see's the light of day as far as the user is concerned. If you have maybe rushed through some code for a deadline, as long as it functions correctly then the user never needs to know how many expletives you've inserted into the comments. However with more and more applications being written for the web, with a desktop feel implemented by AJAX and popular frameworks like jQuery being banded around to every Tom, Dick and Harry, how can a programmer maintain some dignity and hide his/her JavaScript code without it being flaunted like dirty laundry when the users hit Right Click-View Source or Inspect Element. Are there any ways to hide JavaScript application logic/code?

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  • Java Developers: Open-source Modules, Great Tools, Opportunity.

    - by Paul Sorensen
    The role of Java developer may just be better than ever. An excellent article in Java Magazine discusses the availability of web-based tools that help development teams more effectively manage their projects and modules. If you are a Java developer you should definitely read this article. I especially like the Expert Opinions scattered throughout the article. These highlight real-world usage of the latest and greatest development tools.  As you consider steps to move your career forward, consider Java certification. Oracle has over 15 unique Java certification credentials available. The process of becoming certified in Java and preparing for your exams will require you to study, learn and practice (code). All of this activity will help you sharpen your skills and increase your working knowledge of Java - making you a better developer and more valuable member of your team. You can use the Certification Finder on the Oracle certification homepage to find a Java certification that is right for you. Thanks! 

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