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  • Nvidia G96 [GeForce 9400 GT] and application graphic issues

    - by Fabio
    I've got a quite old NVIDIA graphic card and I with installed restricted drivers from Settings panel (as also shown in this thread). ? ~ lspci 02:00.0 VGA compatible controller: NVIDIA Corporation G96 [GeForce 9400 GT] (rev a1) I tried a lot of them: version 173-update, current, beta, but the only one that can run unity-2d it's current-update. That's Ubuntu 12.04.1 LTS 64bit. However... Unity crashes, sometimes windows border disappear, Java Virtual Machine doesn't works, font rendering it's slow and so on. How can I solve this? Some suggestions? Thanks!

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  • C# async and actors

    - by Alex.Davies
    If you read my last post about async, you might be wondering what drove me to write such odd code in the first place. The short answer is that .NET Demon is written using NAct Actors. Actors are an old idea, which I believe deserve a renaissance under C# 5. The idea is to isolate each stateful object so that only one thread has access to its state at any point in time. That much should be familiar, it's equivalent to traditional lock-based synchronization. The different part is that actors pass "messages" to each other rather than calling a method and waiting for it to return. By doing that, each thread can only ever be holding one lock. This completely eliminates deadlocks, my least favourite concurrency problem. Most people who use actors take this quite literally, and there are plenty of frameworks which help you to create message classes and loops which can receive the messages, inspect what type of message they are, and process them accordingly. But I write C# for a reason. Do I really have to choose between using actors and everything I love about object orientation in C#? Type safety Interfaces Inheritance Generics As it turns out, no. You don't need to choose between messages and method calls. A method call makes a perfectly good message, as long as you don't wait for it to return. This is where asynchonous methods come in. I have used NAct for a while to wrap my objects in a proxy layer. As long as I followed the rule that methods must always return void, NAct queued up the call for later, and immediately released my thread. When I needed to get information out of other actors, I could use EventHandlers and callbacks (continuation passing style, for any CS geeks reading), and NAct would call me back in my isolated thread without blocking the actor that raised the event. Using callbacks looks horrible though. To remind you: m_BuildControl.FilterEnabledForBuilding(    projects,    enabledProjects = m_OutOfDateProjectFinder.FilterNeedsBuilding(        enabledProjects,             newDirtyProjects =             {                 ....... Which is why I'm really happy that NAct now supports async methods. Now, methods are allowed to return Task rather than just void. I can await those methods, and C# 5 will turn the rest of my method into a continuation for me. NAct will run the other method in the other actor's context, but will make sure that when my method resumes, we're back in my context. Neither actor was ever blocked waiting for the other one. Apart from when they were actually busy doing something, they were responsive to concurrent messages from other sources. To be fair, you could use async methods with lock statements to achieve exactly the same thing, but it's ugly. Here's a realistic example of an object that has a queue of data that gets passed to another object to be processed: class QueueProcessor {    private readonly ItemProcessor m_ItemProcessor = ...     private readonly object m_Sync = new object();    private Queue<object> m_DataQueue = ...    private List<object> m_Results = ...     public async Task ProcessOne() {         object data = null;         lock (m_Sync)         {             data = m_DataQueue.Dequeue();         }         var processedData = await m_ItemProcessor.ProcessData(data); lock (m_Sync)         {             m_Results.Add(processedData);         }     } } We needed to write two lock blocks, one to get the data to process, one to store the result. The worrying part is how easily we could have forgotten one of the locks. Compare that to the version using NAct: class QueueProcessorActor : IActor { private readonly ItemProcessor m_ItemProcessor = ... private Queue<object> m_DataQueue = ... private List<object> m_Results = ... public async Task ProcessOne()     {         // We are an actor, it's always thread-safe to access our private fields         var data = m_DataQueue.Dequeue();         var processedData = await m_ItemProcessor.ProcessData(data);         m_Results.Add(processedData);     } } You don't have to explicitly lock anywhere, NAct ensures that your code will only ever run on one thread, because it's an actor. Either way, async is definitely better than traditional synchronous code. Here's a diagram of what a typical synchronous implementation might do: The left side shows what is running on the thread that has the lock required to access the QueueProcessor's data. The red section is where that lock is held, but doesn't need to be. Contrast that with the async version we wrote above: Here, the lock is released in the middle. The QueueProcessor is free to do something else. Most importantly, even if the ItemProcessor sometimes calls the QueueProcessor, they can never deadlock waiting for each other. So I thoroughly recommend you use async for all code that has to wait a while for things. And if you find yourself writing lots of lock statements, think about using actors as well. Using actors and async together really takes the misery out of concurrent programming.

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  • Google I/O 2010 - Real-time apps w/ App Engine and Feed API

    Google I/O 2010 - Real-time apps w/ App Engine and Feed API Google I/O 2010 - Building real-time web apps with App Engine and the Feed API Google APIs, App Engine 201 Brett Bavar, Moishe Lettvin We're introducing two new APIs which you can use to power real-time web apps: the App Engine Channel API and the Feed API v2 with push updates. Learn how the new Channel API allows you to push data from your App Engine app to an end user's browser. Also, learn how the new version of the Feed API allows you to subscribe to PubSubHubbub feeds and receive updates pushed to the browser. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 10 1 ratings Time: 38:50 More in Science & Technology

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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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  • Continuous integration - build Debug and Release every time?

    - by Darian Miller
    Is it standard practice when setting up a Continuous Integration server to build a Debug and Release version of each project? Most of the time developers code with a Debug mode project configuration set enabled and there could be different library path configurations, compiler defines, or other items configured differently between Debug/Release that would cause them to act differently. I configured my CI server to build both Debug & Release of each project and I'm wondering if I'm just overthinking it. My assumption is that I'll do this as long as I can get quick feedback and once that happens, then push the Release off to a nightly build perhaps. Is there a 'standard' way of approaching this?

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  • Security Tips for super user in Ubuntu 11.10?

    - by Gaurav_Java
    Ubuntu is a relatively safe but this should not prevent you to be vigilant. I'm working on securing Ubuntu 11.10 and was looking for every tip to secure my Ubuntu 11.10 and upcoming version 12.04. I go through this question . But my Question is Begin as Super User and as Normal user also. Which is Best tools which I can use for preventing my data? What Services and features I Enable Manually after installing ubuntu ? What security measure I should take? What i don't do ? What are other precaution some takes as super user? what are Normal security stay patched in ubuntu? and if i am missing something then please add them

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  • I can't get Ubuntu installation to start

    - by tyler
    I have a computer with the following configuration: AZUS Sabertooth Motherboard Intel I5 2500 CPU Windows 7 installed I'm trying to install linux. I first attempted to install pin guy. I burned the ISO, booted from it, got the initial menu; attempting to either run the live version from DVD, or install to system. However the process stops at a blank screen with the blinking cursor in left corner. So I downloaded Ubuntu and got the same results. Then I tried wubi and ended up in the same position. EDIT: UEFI might be part of the problem? Based on the link below I have determined that the process will be too time consuming and or risky so I'm giving up. https://help.ubuntu.com/community/UEFIBooting

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  • Install Ubuntu and erase Windows Vista

    - by miguel
    I have an older laptop with a ADA hard disk I can't really buy a new one so I want to erase Windows Vista on my computer and only have Ubuntu so that I can have more space. How do I make it go directly to my blank CD? My Windows Vista is messed up and I can't even get into it. I want to download the new version of Ubuntu while in Ubuntu. I downloaded it but it didn't go directly to the blank CD. I tried to copy all of Ubuntu onto the CD once it was downloaded but it says there was an error while copying. What should I do?

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  • System went to sleep while running do-release-upgrade

    - by Sebi
    I am trying to upgrade from Ubuntu 12.04 to 14.04 on a laptop. I have run sudo do-release-upgrade During the upgrade process the laptop went into sleep/locked screen mode. I have rebooted and noticed that dependencies are broken. Running: lsb_release -a shows that the version has been upgraded to 14.04. However, the upgrade process did not finish(there was no output, I had to restart the workstation as the screen was blinking continuously). Now, following this question I have run sudo apt-get -u dist-upgrade and am now waiting for the process to finish.

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  • Sharing internet to Ubuntu 12.04 VMWare guest

    - by John Cogan
    Got the 12.04 distro and installed this on my Mac VMWare Fusion (Version 4.1.2). Install went fine and Ubuntu seemed to update itself during the install. Rebooted and now I cannot get Ubuntu to access the internet via my Macs Ethernet connection (Connected to a router) Have tried settings the VMWare network adaptor to NAT or bridged and Host only without success. In Ubuntu I have the eth0 set to Automatic DHCP. VMWare tools is installed as well. I know next to nothing about what to do here and net searches on both Stackoverflow and Superuser sites are producing not results for me. Could someone please help? What to eventually have Ubuntu run in the background as a development web server running Zend Framework and CE Server edition but need thew internet access to run updates etc on Ubuntu. Any help would be really appreciated. TIA John

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  • Convince developer to use IDE

    - by artjom
    There is a developer, lets call him John (currently on probationary period) in company(pretty small company approx. 10 persons, 3 developers, one of them works long in this company know business process around and can be consider as Team leader) who didn't want to use any IDE at all(he is using some text editor). Application this team working on is medium size Java application with Spring Hibernate technology stack and refactoring/adding new features to launch new version of that application in near future. John performance working without IDE on this application is lower then desirable, team leader's (lets call him Bill) assumption is this happens because John is not using IDE. Bill try to persuade John to use IDE, but this idea meets a lot of resistance and main reason is "I want to be in total control of what I am doing, so I need to write all code by myself". How can Bill convince John to try to use IDE? (considering the fact what Bill already protected John from company owner several complaints about John performance)

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  • How to play Minecraft Classic?

    - by djeikyb
    First off, I've read through this question: How to install minecraft?. I'm interested in the free web-embedded version (for demo purposes), not the paid and downloaded .jar file. I removed the open-java whatever that Ubuntu prefers to use. I installed sun-java6-jre. Then I ran sudo update-alternatives --config java to ensure I was using Sun's Java. Restarted my browsers, then tried to start the game from: http://www.minecraft.net/play.jsp It pops a prompt to make sure I really want to allow direct interaction between minecraft.net and my computer, I agree. The in browser display mumbles something about loading a library, then darkness. The page doesn't crash, ps shows the java plugin process, all seems well except the game doesn't load. I see the same behaviour on Chromium 11.0.662.0 (73963) as Firefox 4 RC1.

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  • Sign on Experience with Office 365

    - by Sahil Malik
    SharePoint 2010 Training: more information Office 365 offers two types of identities: · Microsoft Online Services cloud IDs (Cloud Identity): This is the default identity Microsoft provides you, requires no additional setup, you sign up for Office 365 and you are provided a credential. You can sign in using forms based authentication, the password policy etc. for which is stored in the cloud with the Office 365 service. The advantage obviously is no additional setup headache. The disadvantage? Yet another password to remember, and no hope of authenticated single sign on integration using this cloud identity with other services at least in the current version. · Federated IDs (Federated Identity): In companies with on-premises Active Directory, users can sign into Office 365 services using their Active Directory credentials. The corporate Active Directory authenticates the users, and stores and controls the password policy. The advantage here is plenty of single sign on possibilities and better user experience. The downside, more Read full article ....

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  • GA UA codes for testing site - set up

    - by Drew
    Anyone know the process for using a GA live UA code to test a site in development. I.e. I have a live site with a GA UA code attached, tracking live traffic data etc e.g. UA-123456. I've been told that there is a way to produce another code associated to the primary code to use on the testing version of my live site e.g. test code could be UA-123457. Can anyone shed some light on this? If not possible should I just set up a completely separate GA account for my testing site?

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  • Which, among the humble indie bundle V games, work on 10.04?

    - by daithib8
    Inevitably, I've coughed up for the latest Humble Bundle, containing 5 games: Amnesia, Bastion, Limbo, Psychonauts and Superbrothers: Sword and Sorcery. At the download page it says download for ubuntu but after that it transpired (after much head scratching) that the three games it lists "are not available for your version of ubuntu". The other two, Bastion and Psychonauts "will appear on the page soon", but until then does anybody think they might work? I don't want to to be disappointed after downloading a 4gb file, causing me to reminisce on childhood memories of loading 8-bit tape games for 45 minutes only to find out that you had to reload them once you died after 30 seconds in.

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  • SQL Server 2012 AlwaysOn Groups and FCIs Part 4

    This is Part 4 of a series on AlwaysOn and FCI integration in SQL Server. In this article we will learn how to add the iSCSI disk storage to our SQL Server nodes and build the cluster. 24% of devs don’t use database source control – make sure you aren’t one of themVersion control is standard for application code, but databases haven’t caught up. So what steps can you take to put your SQL databases under version control? Why should you start doing it? Read more to find out…

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  • VMWare-Tools Installation fails

    - by Ajay
    I am trying to install VMwareTools-8.4.6-385536.tar.gz (VMWare Tools) on the following operating system: Ubuntu 11.04 Linux ubuntu 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011 i686 i686 i386 GNU/Linux I am using VMPlayer version 3.1.4 - build 385536 After starting the installation I am getting the following errors: What is the directory that contains the init scripts? [/etc/init.d] Error opening No such file or directory Distribution provided drivers for Xorg X server are used. Skipping X configuration because X drivers are not included. Creating a new initrd boot image for the kernel.<br> update-initramfs: Generating /boot/initrd.img-2.6.38-8-generic Starting VMware Tools services in the virtual machine: Switching to guest configuration: done Blocking file system: done Guest operating system daemon: failed Virtual Printing daemon: done Unable to start services for VMware Tools Can somebody help in this?

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  • "Unrecoverable error" during installation

    - by Sal
    I have an old Dell computer and I want to switch from windows xp and install the new ubuntu. I have tried multiple times to download it via cd-r but keep getting the same error message: unrecoverable error. The error happens after the menu which lists try ubuntu, install ubuntu, etc.It only gets as far as the Screen with a toolbar on the top that includes power, sound, and two arrows. That is when the message displays. switching to desktop version to find what the problem is( or something like that.) What is going wrong?

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  • Recommend good shared hosting [closed]

    - by Django Reinhardt
    It seems that everyone has something bad to say about the "big" shared hosting sites like 1and1, HostGator, GoDaddy, etc. but what are the ones you've had GOOD experiences with? I'm going to focus this question on LAMP stacks, given that they're the most popular option for shared hosting, but if you have an especially good experience with a different stack. Good shared hosting should be: Competitively priced - But not at the expense of... Fully featured - Email, PHP, MySQL, but what else? Highly customizable - Do you have access to advanced features like being able to deliver static content? Up to date - Do they run PHP4 as standard, or do they run the latest version? Customer service - When you have a problem are they rude and unhelpful? Do they take ages to reply? So how about it? Who have YOU have a good experience with?

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  • How do I install gcc 4.8.1 on Ubuntu 13.04?

    - by sud_the_devil
    I have a 64 bit UBUNTU 13.04 running gcc --version shows me gcc (Ubuntu/Linaro 4.7.3-1ubuntu1) 4.7.3 But on May 31 2013 gcc 4.8.1 was released . And I don't know how to install it .. Can someone please explain me the steps that I need to do for successfull installation .. Also please tell me whether I can have both the instances of gcc installed i.e 4.7.3 & 4.8. 1 or not ?? And after installation how can I point to the new gcc 4.8.1 ??

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  • Cumulative Feature Overviews For PeopleSoft 9.2 Now Available

    - by John Webb
    Cumulative Feature Overviews (aka CFO's), are a great tool to start your fit gap analysis for PeopleSoft 9.2.      Built into an Excel spreadsheet, it enables you to quickly understand major changes that have occurred across multiple releases for any give product.    For example, if you are on PeopleSoft Accounts Payable 8.9 and are looking for the changes that have occurred between 8.9 and 9.2, the CFO tool provides a list of these changes for all releases since PeopleSoft 8.9 with detailed descriptions.    Customers and partners can now download the 9.2 version of the CFO's in My Oracle Support at the link below. PeopleSoft Cumulative Feature Overview Tool Homepage [ID 1117033.1]

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  • OpenJDK pour MacOS : le projet a débuté, les premiers codes sont disponibles

    OpenJDK pour MacOS : le projet a débuté Les premiers codes sont disponibles Mise à jour du 13/01/2011 par Idelways Les premiers codes de la version pour MacOS X du Java Development Kit 7 (dans le cadre du projet OpenJDK) sont disponibles. Il s'agit du port d'un code initial destiné à BSD (UNIX). Ce code est téléchargeable sur le site de OpenJDK, dans le projet « MacOS X Port ». Une mailing-list et un wiki ont également été ajouté, et bientôt un gestionnaire de rapports de bugs Pour mémoire, Apple avait provoqué un vent de panique dans la communauté Java en déclarant à la mi-novembre 2010 qu'il ne comptait...

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  • Why doesn't the Visual Studio C compiler like this? [migrated]

    - by justin
    The following code compiles fine on Linux using gcc -std=c99 but gets the following errors on the Visual Studio 2010 C compiler: Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.40219.01 for 80x86 Copyright (C) Microsoft Corporation. All rights reserved. fib.c fib.c(42) : error C2057: expected constant expression fib.c(42) : error C2466: cannot allocate an array of constant size 0 fib.c(42) : error C2133: 'num' : unknown size The user inputs the amount of Fibonacci numbers to generate. I'm curious as to why the Microsoft compiler doesn't like this code. http://pastebin.com/z0uEa2zw

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  • Most underestimated programming tool

    - by Anto
    We have many great tools which helps a lot when programming, such as good programmers text editors, IDEs, debuggers, version control systems etc. Some of the tools are more or less "must have" tools for getting the job done (e.g. compilers). There are still always tools which do help a lot, but still don't get so much attention, for various reasons, for instance, when they were released, they were ahead of their time and now are more or less forgotten. What type of programming tool do you think is the most underestimated one? Motivate your answer.

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  • The standards that fail us and the intellectual bubble

    - by Jeff
    There has been a great deal of noise in the techie community about standards, and a sudden and unexplainable hate for Flash. This noise isn't coming from consumers... the countless soccer moms, teens and your weird uncle Bob, it's coming from the people who build (or at least claim to build) the stuff those consumers consume. If you could survey the position of consumers on the topic, they'd likely tell you that they just want stuff on the Web to work.The noise goes something like this: Web standards are the correct and right thing to use across the Intertubes, and anything not a part of those standards (Flash) is bad. Furthermore, the more recent noise is centered around the idea that HTML 5, along with Javascript, is the right thing to use. The arguments against Flash are, well, the truth is I haven't seen a good argument. I see anecdotal nonsense about high CPU usage and things I'd never think to check when I'm watching Piano Cat on YouTube, but these aren't arguments to me. Sure, I've seen it crash a browser a few times, but it's totally rare.But let's go back to standards. Yes, standards have played an important role in establishing the ubiquity of the Web. The protocols themselves, TCP/IP and HTTP, have been critical. HTML, which has served us well for a very long time, established an incredible foundation. Javascript did an OK job, and thanks to clever programmers writing great frameworks like JQuery, is becoming more and more useful. CSS is awful (there, I said it, I feel SO much better), and I'll never understand why it's so disconnected and different from anything else. It doesn't help that it's so widely misinterpreted by different browsers. Still, there's no question that standards are a good thing, and they've been good for the Web, consumers and publishers alike.HTML 4 has been with us for more than a decade. In Web years, that might as well be 80. HTML 5, contrary to popular belief, is not a standard, and likely won't be for many years to come. In fact, the Web hasn't really evolved at all in terms of its standards. The tools that generate the standard markup and script have, but at the end of the day, we're still living with standards that are more than ten years old. The "official" standards process has failed us.The Web evolved anyway, and did not wait for standards bodies to decide what to do next. It evolved in part because Macromedia, then Adobe, kept evolving Flash. In the earlier days, it mostly just did obnoxious splash pages, but then it started doing animation, and then rich apps as they added form input. Eventually it found its killer app: video. Now more than 95% of browsers have Flash installed. Consumers are better for it.But I'll do it one better... I'll go out on a limb and say that Flash is a standard. If it's that pervasive, I don't care what you tell me, it's a standard. Just because a company owns it doesn't mean that it's evil or not a standard. And hey, it pains me to say that as a developer, because I think the dev tools are the suck (more on that in a minute). But again, consumers don't care. They don't even pay for Flash. The bottom line is that if I put something Flash based on the Internet, it's likely that my audience will see it.And what about the speed of standards owned by a company? Look no further than Silverlight. Silverlight 2 (which I consider the "real" start to the story) came out about a year and a half ago. Now version 4 is out, and it has come a very long way in its capabilities. If you believe Riastats.com, more than half of browsers have it now. It didn't have to wait for standards bodies and nerds drafting documents, it's out today. At this rate, Silverlight will be on version 6 or 7 by the time HTML 5 is a ratified standard.Back to the noise, one of the things that has continually disappointed me about this profession is the number of people who get stuck in an intellectual bubble, color it with dogmatic principles, and completely ignore the actual marketplace where this stuff all has to live. We aren't machines; Binary thinking that forces us to choose between "open standards" and "proprietary lock-in" (the most loaded b.s. FUD term evar) isn't smart at all. The truth is that the <object> tag has allowed us to build incredible stuff on top of the old standards, and consumers have benefitted greatly. Consumer desire, capitalism, and yes, standards ratified by nerds who think about this stuff for years have all played a role in the broad adoption of the Interwebs.We could all do without the noise. At the end of the day, I'm going to build stuff for the Web that's good for my users, and I'm not going to base my decisions on a techie bubble religion. Imagine what the brilliant minds behind the noise could do for the Web if they joined me in that pursuit.

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