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• DNS slowdowns on development environment

  - by Sequenzia

  I have a local development environment setup on my Mac. I am running an Ubuntu Web Server inside of a Virtual Box VM. I setup a host file on my Mac that points my dev site to the IP of the Ubuntu Virtual Server. Everything works good other than the fact a lot (not all) of the time it takes more than 5 seconds to load a page. I used firebug to track down where the problem is and when it's slow the DNS part of my request is taking over 5 seconds. Like I said it's not all the time. Sometimes it resolves and loads the page within milliseconds. The same page one click will be super fast and then the next time it takes over 5 seconds. It's really slowing me down and I am not sure what is causing it. Anyone have any ideas? Any help would be great. Thank

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• samsung netbook n102sp problems with ubuntu 12.04 does not recognize intel 3150 hd high resolution

  - by foxtier494

  hello friends I have a samsung netbook n102sp atom processor 1.6, 2GB ddr3 ram and a intel 3150hd chiset chart, well the problem is the following the regular work pc has audio, lan, wi-fi reconose the video but I only lansa the resolution of 800 x 600 and I can not upload that's in the details of the computer I get into graphics (VESA: Intel ® Graphics XX) and I can not see videos because they only hear the audio and I use the vlc player I investigate intel 3150hd drivers and try to install layered but I was not please someone help me because it's an ugly work 800 x 600 and I can not see videos please, if anyone knows how to install the driver from Intel that are on the web please guide me when applied dpkg-s xserver-xorg-video-intel tells me that this driver installed ( XvMC "XVideo Motion Compensation" drivers for i810/i815 and i9xx and newer chipsets.)

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• How can I find a position between 4 vertices in a fragment shader?

  - by c4sh

  I'm creating a shader with SharpDX (DirectX11 in C#) that takes a segment (2 points) from the output of a Vertex Shader and then passes them to a Geometry Shader, which converts this line into a rectangle (4 points) and assigns the four corners a texture coordinate. After that I want a Fragment Shader (which recieves the interpolated position and the interpolated texture coordinates) that checks the depth at the "spine of the rectangle" (that is, in the line that passes through the middle of the rectangle. The problem is I don't know how to extract the position of the corresponding fragment at the spine of the rectangle. This happens because I have the texture coordinates interpolated, but I don't know how to use them to get the fragment I want, because the coordinate system of a) the texture and b) the position of my fragment in screen space are not the same. Thanks a lot for any help.

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• Approach on working with many programmers on one module/feature

  - by Panoy

  How can 2 or more developers code a certain feature/module of a software? Let's assume that the module is big and feature rich. How would they prevent each other from overlapping their code? Say, we have the same method but is implemented in a different way. Do you think it might be better to have one focused at a specific feature only? Is a version control system like Git would help solve the problem? Is it correct that it allows developers to have these "branches" and then merge it later on? What's your take on this?

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• Gnome Shell got removed after updating Ubuntu 12.04

  - by CMG

  Now when i try to install it...it shows the following error sudo apt-get install gnome-shell Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: gnome-shell : Depends: libgcr-3-1 (>= 3.4.0) but 3.2.2-2ubuntu4 is to be installed Depends: gir1.2-gcr-3 but it is not installable Recommends: gnome-contacts but it is not going to be installed E: Unable to correct problems, you have held broken packages. How can I install GNOME-Shell?

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• Calculate time in all countries for fixed time in one of them [migrated]

  - by Muiz

  I have table with all countries GMT/UTC timezones, I need to see what time is in the rest of the countries when in USA is 11am-3pm Not on particular date just know the difference in time. I did my calculation like that I -5 GMT in USA and time is 11am then in Russia for example is +4 GMT. 5+4+11=20pm in Russia when USA is 11am, this works with countries that have + GMT zone but ones that have minus it shows wrong time. I am working in Excel please help me with advice on how to do it.

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• Do I need to know servlets and JSP to learn spring or hibernate or any other java web frameworks?

  - by KyelJmD

  I've been asking a lot of people where to start learning java web development, I already know core java (Threading,Generics,Collections, a little experience with (JDBC)) but I do not know JSPs and servlets. I did my fair share of development with several web based applications using PHP for server-side and HTML,CSS,Javascript,HTML5 for client side. Most people that I asked told me to jump right ahead to Hibernate while some told me that I do not need to learn servlets and jsps and I should immediately study the Spring framework. Is this true? do I not need to learn servlets and JSPs to learn hibernate or Spring? All of their answers confused me and now I am completely lost what to learn or study. I feel that if I skipped learning JSP and servlets I would missed a lot of important concepts that will surely help me in the future. So the question, do I need to have foundation/know servlets and JSP to learn spring or hibernate or any other java web frameworks.?

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• Five new junior developers and lots of complex tasks. What's now?

  - by mxe

  Our company has hired five new junior developers to help me to developer our product. Unfortunately the new features and incoming bug fixes usually require deeper knowledge than a recently graduated developer usually has (threading/concurrency, debugging performance bottlenecks in a complex system, etc.) Delegating (and planning) tasks which they (probably) can solve, answering their questions, mentoring/managing them, reviewing their code use up all of my time and I often feel that I could solve the issues less time than the whole delegating process takes (counting only my time). In addition I don't have time to solve the tasks which require deeper system knowledge/more advanced skills and it does not seem that it will change in the near future. So, what's now? What should I do to use their and my time effectively?

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• Can't boot Ubuntu 12.04

  - by carlo

  I installed 12.04 on my windows vista laptop. I wanted to make run Ubuntu and ditch windows. I selected to delete disk and install 12.04. It won't let boot 12.04 with out the install disk. When I turn on my laptop now it goes to a black screen with a blinking cursor. I have to power off then insert Ubuntu 12.04 cd as if it wants me to reinstall. I checked the drive and Ubuntu is there with some of my other saves as well. Can someone help me please?

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• what is best book to learn optimized programming in java [closed]

  - by Abhishek Simon

  Possible Duplicate: Is there a canonical book for learning Java as an experienced developer? Let me elaborate a little: I used to be a C/C++ programmer where I used data structure concept like trees, queues stack etc and tried to optimize as much as possible, minimum no. of loops, variables and tried to make it efficient. It's been a couple of years that I started writing java codes, but it is simply not that efficient in terms of performance, memory intensive etc. To the point: I want to enter programming challenges using java so I need to improve my approach at things I program. So please suggest me some books that can help me learn to program better and have a chance in solving challenges in programming.

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• Will an Atheros AR928X work with WPA2?

  - by Tommy

  Basically I need only the answer to above question. Please think of that I am new to linux. For further explanation here is the full story: I have the following problem. My friends notebook (Vista) has got a trojan and refuses to work anymore. The Avira Rescue CD did not help either. So I tried an old (9.1) Ubuntu CD and backed up all the essential files. Since we have no Windows Install Disk we want to put Ubuntu on that notebook. But with the 9.1 version there is no WLAN. Systemtest tells me, that it finds an Atheros AR928X, but ifconfig does not show that and the network manager tells me there are no LAN/WLAN devices. So: does that work easier with the new Ubuntu version or is that network adapter a known troublemaker? And: if I get the adapter to work, will it work with the WPA2-network around here?

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• Simulate Geo Location in Silverlight Windows Phone 7 emulator

  If youve been excited about Windows Phone 7 development and the platform being Silverlight for application development, you probably rushed and downloaded all the tools (which are free by the way). You may have even got the samples from the SDK and noticed the Location services examplebut wondered why it doesnt work. If you are just getting started, I created some quickstart videos to help you through some of the basics. You can view them here. In case you havent figured it out: Location services...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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• Wireless card disappeards when restart ubuntu

  - by Kristian Jones

  I used 'additional drivers' to install 'Broadcom STA wireless driver' and it returns an error. WIthin jockey.log it says the following numerous times. 2011-02-14 21:24:06,945 DEBUG: BroadcomWLHandler enabled(): kmod disabled, bcm43xx: blacklisted, b43: blacklisted, b43legacy: blacklisted After it returns the error the network card will work temporarily until I restart the laptop. When I restart I got to go through the procedure again of trying to activate the driver, returns an error however it works temporarily. The network card is as follows on a Dell Inspiron 1545: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] Rev 01 I have been trying to solve this myself for many hours. Any help is appreciated/

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• Developing Web Portal

  - by Ya Basha

  I'm php, Ruby on Rails and HTML5 developer I need some advises and suggestions for a web portal project that I will build from scratch. This is my first time to build a web portal, Which developing scripting language you prefer and why? and how I should start planing my project as it will contains many modules. I'm excited to start building this project and I want to build it in the right way with planing, if you know some web resources that help me decide and plan my project please give them to me. Best Regards,

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• Ubuntu 12.10 Unity and Gnome not showing correctly after log in

  - by Luis Rodriguez

  Hello Ubuntu community. Since last Saturday when I was about to log into my ubuntu session as always using Unity interface, I came across with something that never happened to me before. When I logged in, the screen only showed the Desktop wallpaper but neither the bar from the top screen neither the dash bar from the left side appear, and after a few minutes of being logged in, I found myself being spammed with Ubuntu errors windows, over and over again. I logged out using ctrl+alt+del and tried my Gnome sessio. But I got exactly the same problem. I'm only able to use Gnome Classic and Classic (No Effects) Can anybody help? Hope a reply soon, and thanks in advance.

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• Using heavyweight ORM implementation for light based games

  - by Holland

  I'm just about to engulf myself in an MVC-based/Component architecture in C#, using MySQL's connector/Net for the data storage, and probably some NHibernate/FluentNHibernate Object-relational-mapping to map out the data structure. The goal is to build a scalable 2D RPG. Then I think about it...and I can't help but think this seems a little "heavy weight" for a 2D RPG, especially one which, while I plan to incorporate a lot of functionality and entertaining gameplay, may be ported to something like Windows Phone or Android in the future. Yet, on the other hand even a 2-Dimensional RPG can become very complicated, and therefore must incorporate a lot of functionality. While this can be accomplished with text/XML/JSON for data storage, is there a better way? Is something such as Object-Relational-Mapping useful in such an application? So, what do you think? Would you say that there is a place for such technologies? I don't know what to think...

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• Structuring a rails application with static data

  - by Morten

  I'm working on a rails application, and so far I've focused on the api and the functionality. But now I'm more and more reaching a point where I will want to add static content, descriptions of the software and help information. Information that is generally in a CMS system. How do I in the best way structure this so I can still work with the application. Yet maintaining the look and feel of the rails application? Do write a CMS in my app? That seems a bit far fetched. Are there any Gems that do this? What is the de facto standard for architecting this scenario?

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• Battery management doesn't recognize removal of power supply

  - by Jason

  I have a Lenovo Y460p running Ubuntu 12.04 (64-bit). The battery does charge normally, but unplugging the power supply only very briefly shows the correct battery indicator. After about 1 second, it reverts to the charging indicator. If the power supply is connected the power statistics show: "Supply Yes" "Online Yes" If it is not connected it shows: "Supply Yes" "Online No" My problem is almost exactly like the one in this post: Ubuntu 11.10 power management does not recognize removal of power supply The only exception is that my system does not dual-boot with Windows. This is Ubuntu only. The computer in the other post is a Lenovo as well; not sure if that has anything to do with it. Any help would be greatly appreciated. Thanks.

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• Install packages with unmet dependencies

  - by Alvin Sim

  Hi all, I am trying to install some applications but some of them fail to install. The three applications I tried are Vim, Emacs and GNOME-Do. I am using Ubuntu 10.10 installed as a guest OS in VirtualBox. The kernel version installed is 2.6.35-26. The error I got is : alvinsim@ubuntu:/etc/apt$ sudo apt-get install emacs Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: emacs : Depends: emacs23 or emacs23-lucid but it is not going to be installed emacs23-nox but it is not going to be installed E: Broken packages What is wrong and how do I fix this? Thanks.

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• How to setup NX server and client?

  - by javanoob

  I installed NX server on my desktop and able to run it successfully following this tutorial: http://michigantelephone.wordpress.com/2007/10/15/how-to-install-nx-server-and-client-under-ubuntukubuntu-linux/ When i run the command sudo /usr/NX/bin/nxserver –status I am seeing the following output : NX 900 Connecting to server .. NX 110 NX Server is running. NX 999 Bye. It means i have setup NX server correctly.. But on other machine when i open NX client it is asking for hostname..what name should i give there? Every tutorial is explaining about how to install and start NX server but not about how to connect to the server from client.. Could you guys please help me? Thanks in Advance Deter

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• Synaptic: Requires installation of untrusted packages

  - by user170556

  I am completely new to the forums and almost completely new to Linux. I am running Chrubuntu on an Acer C7 and I've been having trouble installing anything in the Ubuntu Software Center. Based on some advice in another thread I tried to install Synaptic, which seems like it does the same thing except it actually works, but I get the same error message with that as I have with every other program I've tried installing. This is all I get under the details: libept1.4.12 librarian0 rarian-compat synaptic Any help with some simple step by step instructions on how to fix this, and will Synaptic basically be able to replace the Software Center? Thanks a lot.

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• Any way to skip the huge apt-cache-update everytime a repository is added?

  - by Nirmik

  I keep adding atleast one repository per day.! I like new stuff and to personalise my Ubuntu. But now evertime I add a repository,the apt cache needs to be updated and its almost a 10-15min update everyday.! Moreover its a lot data consuming. Is there any way or workaround so that the repository is updated in the apt-cache without updating other stuff? Also,sometimes i do not wish to install some updates at the given point of time due to my bandwidth limitations.But then if i have to add a repository,the updates are all installed in the sudo apt-get update command.. Would like any help. The bandwidth limit is actually a major issue for me.! Thanx :)

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• Wireless device not working...supposed problem with b43 driver

  - by Francesco

  I just installed Xubuntu 11.10 onto an old Acer Aspire 3003wlmi. The wireless card is not working. I did all the passages illustrated in the troubleshooting guide but I came up with nothing. It says that driver is b43, but when I booted from the installation cd I noted down some messages saying "Error - b43/ucode " and "Error b43/phy_...something". I had Ubuntu 10.10 installed before and I remember I had similar problems but I don't remember how to solve it. If you please can help me. thanks a lot. Francesco

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• Xna Loading Screens

  - by Cyral

  I'm making a 2D XNA game. I'd like to implement loading screens when stuff has to load for a while. Like when I login to an account, connect to the server, and generate worlds. I'm pretty sure it needs to be multithreaded, because I want to be able to do something like "Generating World 10%...11%...". GenerateWorld() { //Call StartLoading("Generating World"); or something //Starter generating, Updating progress... //End loading screen and fade into world } Help appreciated, I'm new.

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• How do I enable Flash 11.2 in Chrome?

  - by austen

  I'm trying to force Chrome to use Flash 11.2 rather than the packaged Pepper version because it doesn't support DRM and I want to be able to use Amazon Instant Video/HBO GO. I followed Adobe's instructions to a tee but when I restart Chrome and view the plugins, the Pepper flash version is still the only one available. I have expanded the details and am certain I have not just missed the other version. I checked the directories where the files were being copied to verify that it worked and it appears that they successfully copied without issue. Unfortunately, since I didn't run into any problems until finding that it just didn't work, I don't have many other details that might help shed some light on this. I'm crossing my fingers though and hoping that someone else might have had some experience with this. Thanks in advance. Version Info Ubuntu - 14.04 Chrome - 35.0.1916.114 Flash I'm trying to install - 11.2.202.359 Flash packaged with Chrome (Pepper) - 13.0.0.214

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