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• Windows 7 professional won't boot after installing ubuntu 11.10 alongside

  - by Piman3.14

  I can't boot into windows 7 professional after installing ubuntu 11.10 alongside windows as a dual boot. Windows starts to boot but then it stops during start up and "crashes". I do not have an installation or repair disc and windows is not registered as I built the computer in a class. Please help anybody who is familiar with ubuntu. Optimally I would like to just uninstall ubuntu altogether as GRUB scares me a little and Ubuntu isn't as good as windows 7 and "Bleeped" stuff up. I tried google and nothing that great came up and also I can't find a phone # to contact ubuntu/linux. :-( Specs: OS: Windows 7 professional x64, Ubuntu unity 11.10; CPU: Intel Celeron 2.6 GHz; 2 GB of RAM; Built in september or october 2011. Desktop Homebuilt PC.

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• Google I/O 2012 - The Web Can Do That!?

  Google I/O 2012 - The Web Can Do That!? Eric Bidelman The web is changing so quickly that it's hard to keep up with what's new in the platform. HTML5's new capabilities allow developers to build a whole new suite of applications - things that were once impossible to do, are now a reality. This session will walk you down the bleeding edge of HTML5 for 2012 by focusing on in-depth techniques, which solve real world challenges. We'll cover media capture, file I/O, advanced usage of websockets, media streaming, device input, multimedia, and modern css design. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 361 37 ratings Time: 43:07 More in Science & Technology

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• ubuntu freezes daily

  - by alme1304

  I have been using ubuntu daily for about 2 weeks now. I really like it but I have noticed that it freezes daily when I have things like chromium and firefox open or when I start watching videos. I realize these might be memory intensive apps/actions but I doubt that with my comps specs they would cause it to freeze. When I installed ubuntu, I remember that it warned me about installing it in a ext2 partition and not in a ext4 one. Could that be the issue? and is there a way to fix it without reinstalling? edit: specs are, 1.9gb ram & Intel® Core™2 CPU 6400 @ 2.13GHz × 2; ubuntu 12.04x64

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• Error Setting Java Environment Variables

  - by Cherie Riesberg

  Problem:  Not exactly SharePoint, but the issue is when setting the %JAVA_HOME% environment variable, Java installs to the Program Files directory by default.  The space in the path seems to stop the variable from being read.  You get an error. Solution:  Change Program Files to Progra~1, so the path now looks like this: C:\Progra~1\Java\jdk1.6.0_23\bin\; You can type %JAVA_HOME%\bin\javac to test.  Output should look like this: Usage: javac <options> <source files> where possible options include: ...

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• Settlers-like terrain representation

  - by Olle

  Remember this beauty? I'm playing it now on my old Amiga 1200. My question is: How do you think they represented the terrain, data structure wise? Obviously it's some kind of points, with a height. Or hexagons. And how did they decide which dots were buildable? EDIT: I could rephrase the question to say "how do I achieve this kind of terrain", but I would still only be interested in how to do it on a machine with 1 MB of RAM and a 7 Mhz processor, because this is the machine i currently developing games for. If that seems like a vague or meaningless question to you, that's alright, but I'm still curious if someone has any knowledge about this.

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• Why Does Unity on Ubuntu 11.04 Lags Often That I have To Manually Shutdown/Restart my Core i3 Laptop?

  - by user20655

  I did a fresh install of Ubuntu then do did some upgrades. After my next restart when I try to open Ubuntu Software Center it took about 20 seconds for the window to load then 10 more seconds before it became click able. While doing some installation of software, Unity lags like hell that every time I click any application it takes a few seconds before I can see it. Even GEdit take a lot of time to load. The worst part was when I was doing nothing to my computer. Even on that part, my computer lags. My Laptop is a Brand New Core i3 with 2GB of RAM. Unity should run perfectly on that kind of machine right? BTW: I reinstalled Ubuntu 11.04 for about 5 times now and still nothing changed.

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• Neither suspend nor hibernate in 12.10 lubuntu - is there a workaround by scripts?

  - by J.-S. Farinet

  I've neither suspend to ram nor to disk in 12.10 lubuntu (i suspect there might be a kernel issue but i'm only a simple user). Also, the xfce powermanagement which comes with lubuntu by default does not have any effect. Even it doesn't lock the screen when i set this in the preferences: What do when close the lid. So, on a portable that's annoying a lot. Is there some way to workaround by scripts in 'etc/pm/*.d'? TIA for any idea.

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• 12.04 install now just blank screen

  - by bull

  I have attempted to install a new copy of 12.04 using usb stick instead of using download manager. Everything went fine while using usb stick until I restarted after installation was complete. Then, I got the screen with cursor and 4 lines of script with the first line saying "could not write to bytes: broken pipes". I have used several versions of Ubuntu from 6.04, but this one seems broken. I have tried nouveau.blacklist and many other suggestions to no luck. I am using hp pavilion m7790y dual core processor system, with nvidia 7600gt video card, 4gb ram and two hard drives with Vista on one and fresh install of Ubuntu 12.04 on other. I'm still looking for help to solve this problem. Thanks in advance.

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• Ubuntu won't boot on windows starter

  - by First timer

  I installed Ubuntu 12.04 LTS yesterday from a usb, but it only boots into Windows unless the usb is in, then it boots into the Ubuntu loader where I can choose Ubuntu vs. Windows. What's the problem? I run windows starter on a netbook with 1 gb ram and intel atom processor. I tried to install boot-repair but it won't work either. I follow the instructions for the Terminal and it seems to go right until I try launching it - then it says that it does not know the command boot-repair. I really like Ubuntu, it lets this netbook run smoothly and better than ever before but I don't think I want to boot from a usb every time.

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• Consuming OData based Rest service in C# [en-US]

  - by ruimachado

  Nowadays comunication between applications is an active topic with daily usage and a large amount of pratical appliances. While developing an app in witch I had to consume an OData I found out that combining Linq with my code made this operation pretty easy.The algorithm to consume OData starts with adding a service reference to Visual Studio:After adding the service reference in wich you define the uri to the service, we start building our code.In your code the algorithm is the following:Define the Uri to your OData ServiceDefine the context of your odata, wich contains all entities exposed by the service.Query the context using LinqPrint the resultEasy and simple.Example code:01public static void Main(string[] args){02 03        Uri serviceUri= newUri("http://example.host.odataservice.net/service.svc", UriKind.Absolute);04        ODataService.ServiceEntities context = newODataService.ServiceEntities (serviceUri);05 06        context.Credentials = newSystem.Net.NetworkCredential(Username,Password);07 08         var query = from ServiceObject in context.YourEntity09                     select ServiceObject ;10 11        foreach (var myObject in query)12        {13            Console.WriteLine("\n Field1: {0} | Field2: {1}",14            myObject .Field1, myObject .Field2);15 16        }17}That’s it.Thank you,Rui Machadorpmachado.wordpress.com

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• USB mouse freezes

  - by Zabba

  A simple Microsoft Optical mouse 1000 (USB) that runs perfectly on Windows, freezes up under Ubuntu 10.x and Fedora 1x after about 10 minutes of using the OS.Rebooting, the same problem comes up again in a few minutes. Interestingly, the problem does not occur when Ubuntu is installed in Oracle VirtualBox VM. Installing Ubuntu "as usual" (i.e. not in a VM), causes the problem to occur. Has any one here faced the same problem or have a solution for it? Maybe using a different mouse that is known to work with Ubuntu 10.x? If it helps my system is: Asus P5NSLI motherboard (nVidia nForce 570 chipset), 4 GB RAM Ubuntu 10.10 refers to "32 bit" version of Ubuntu It seems that Ubuntu has a lot of all types of freeze issues. Can someone recommend a version of Ubuntu that is fairly recent and stable ? I intend to use Ubuntu for Ruby on Rails development.

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• Debugging random reboots

  - by M132

  I'm running Ubuntu 14.04 with 3.16.1 kernel compiled from source, and when I leave my PC running for a long time, it always reboots after about 4-8 days. Nothing is displayed on the screen, everything just freezes for about 3 seconds (and if there was any sound playing, it keeps repeating over and over), and then reboots. This issue also affects kernels compiled by Canonical's build bots. I already tried to debug it with: rsyslog kexec-tools netconsole kernel module None of them seem to be working however. Are there any better methods to check, what exactly fails here? If there's an issue with RAM for example, shouldn't kernel report this in dmesg, or cause a kernel panic?

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• Why does service service_name status give different responses for different services?

  - by Code Ghar

  Running the "service service_name status" command gives three different types of output when three different service_names are used. I tried with atftpd, apache2, and isc-dhcp-server, as shown below. user@host:~$ service atftpd status Usage: /etc/init.d/atftpd {start|stop|restart|reload|force-reload} user@host:~$ service apache2 status Apache2 is running (pid 1103). user@host:~$ service isc-dhcp-server status isc-dhcp-server start/running, process 5696 Could this be because atftpd has not been converted to Upstart? The status for isc-dhcp-server shows "start/running" which indicates it has been converted to use Upstart. I would've thought apache2 would have been converted to Upstart already. If it has then why does it not display "start/running"?

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• In-memory DB to perform intersects on set slices

  - by IanC

  I have a specific programming need where I need to efficiently store large sorted sets in memory, query them for ranges, and intersect them against other sets that are also queried for ranged. I am looking at Redis, but I can't see a range slice command. MongoDB can only use 1 index, so it has to perform row-level scans, whereas I wish to process using columns that are intersected. I'm also looking at Counchbase, but can't easily determine from the documentation if it is suited to this. I know it uses Memcached, which is AFAIK not suited to this usage. Could anyone share potential solutions for this specific problem? EDIT For example, I need to perform the following: Get the IDs of all cars where the price is between 2000 and 3000, and intersect that will all cars where the engine capacity is between 3000 and 4000.

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• Clock running too fast

  - by sBlatt

  I'm currently (for some days now) having the problem, that my Ubuntu clock runs to fast. and by to fast I mean like: last time I adjusted it was at 4 PM, now (10:25 PM) it shows 10:57 PM ! Any ideas how to fix that? Could it have something to do with handbrake? (I'm currently ripping my DVD collection, so handbrake is always running). My System: Ubuntu 10.4, all updates, handbrake from getdeb (0.9.4 I think), Intel Core2Quad, 4 GB Ram, NVidia GTX 260 (195.36.24 according to nvidia-settings) thx for any help Edit: dmesg: http://pastebin.com/VAanad5E /proc/interrupts: http://pastebin.com/VAZLAHzR cmdline: BOOT_IMAGE=/boot/vmlinuz-2.6.32-24-generic root=UUID=082d6800-413b-43d7-b4d1-b96b0d774f32 ro quiet splash

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• When must arbitrary precision arithmetic functions be used in PHP?

  - by Tjorriemorrie

  My colleague uses the Binary Calculator functions in bandwidth calculations; as much as terrabytes, and with percentage splitting on allocation. His usage of these functions appears correct in order not to lose a byte; although he seems to be using them now for everything. The manual only says: For arbitrary precision mathematics PHP offers the Binary Calculator which supports numbers of any size and precision, represented as strings. How much is any size? Is it really necessary? How big is the default float in PHP? Are there any good advice regarding this or things to keep in mind?

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• Ubuntu 12.04 Running Faster Than Normal

  - by One Zero

  I have just installed a new copy of Ubuntu 12.04 on my laptop . i have noticed that my system is running 4x to 5x faster than normal . i have just install Vmware Desktop & centos for testing something . i have noticed that i has installed in just like less than 1 minute !! My system is booting so fast that after starting my laptop i got GUI in like 10 to 13 sec & shutting down in like 2 to 3 sec & all programs ( Firefox , Chrome , etc ) running so fast that i can see .... The only change i made after installation is cat /proc/sys/vm/swappiness 1 How do I configure swappiness? The System is Dell N 5110 i7 with 8GB of RAM So my question is that what should i look for that why my system running very fast ?

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• Multiple copies of JBoss acting as one? [migrated]

  - by scphantm

  I have a few ideas how to solve the problem, but one question about jboss clustering. Please, keep in mind these applications were written very poorly, that is why they require so much memory and there is nothing i can do about that right now. So, I have clustered applications on Jboss where the application was small enough to run on one box. Meaning that one machine could handle the load. But, the current problem is that i have been asked to run several systems on the same environment. Our machines are virtuals and due to limited hardware, are restricted to 8 GB RAM, which gives jboss about 7GB to itself. Unfortunately, that isn't enough to run the group of applications. Im constantly getting heap errors and crashes. If i cluster 2 or 3 jboss instances together, can i run applications that consume more resources than a single box can handle?

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• Double equals (Not equality) during assigning Java

  - by FabianCook

  When I tried searching this I would just get things on equality. When I was reading through some documentation for navigation in Android I had come across something I had never seen before. I came across this: mTitle = mDrawerTitle = getTitle(); It almost looks like something you can do in JavaScript where you can take the first not-null variable and assign it to a variable. In JavaScript I would do this: mTitle = mDrawerTitle || getTitle(); And it would return the first not null, in Java, is this double equals usage the equivalent in Java? What is this type of expression called?

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• dos games with dosbox running slow

  - by NeuroShell

  i have AMD E-450 1.65ghz, 4gb DDR3 ram, HD6320 laptop with dual boot ubuntu 13.04 and win 8.1, my main gaming rig(desktop pc) is with win7(so i am not playing serious games on this laptop) and for university i mostly use ubuntu(unix and programming tasks), for some free time i found dosbox on ubuntu software center and tryed playing several games(blood, syndicate wars) and all of them lag like hell(although on win 8.1 they work perfectly). So any suggestion how to solve the problem? i am using drivers X.org (in software settingsadditional settings) tryed proprietary ones but all screen colors was kinda strange and i couldn't control brightness at all... same dos games was lagging too.

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• MySQL tables corrupted and need to be repaired,how to fix them and how to prevent this [on hold]

  - by Hbirjand

  We have developed a software that uses,MySQL database,and after some month of usage,some of the database tables had been corrupted and need to be repaired,what is the cause of this corruption? How can we fix them? How can we prevent the database tables from corruption. Because of the corruption,we are not able to create a backup using Navicat,and we can not generate a dump too. Is that possible to fix this tables using MySQL engine,and some of this corruption is about empty fields in database tables.

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• Samsung officialise son nouveau Galaxy S4 LTE-A, avec des transferts atteignant les 102 Mbps, il bat les records de vitesse de téléchargement

  Samsung officialise son nouveau Galaxy S4 LTE-A, avec des transferts atteignant les 102 Mbps, il bat les records de vitesse de téléchargementAprès le Galaxy S4 mini, le S4 Zoom, et le S4 Active le coréen présente un nouveau venu dans la famille Galaxy S4 : le Galaxy S4 LTE-A.Bien que Samsung n'ait pas modifié son apparence, les caractéristiques techniques sont des plus impressionnantes. L'appareil embarque un processeur Snapdragon 800 de Qualcomm quad-core cadencé à 2.3 Ghz ce qui en fait un smartphone incroyablement rapide, le plus rapide du monde d'ailleurs d'après les benchmarks. Le téléphone possède un écran Super AMOLED de 4,99 pouces en résolution Full-HD (1080 x 1920 pixels), 2 Go de RAM, un capteur...

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• Problem installing Lubuntu 11.04

  - by anyhelpisapreciated

  After I boot the Live-CD I can't select try Lubuntu or Install Lubuntu and I end up hanging on that screen. My PC specs are: Compaq Presario s4214bd 2.4ghz Intel Celeron. Windows XP/Ubuntu 10.04 dual boot. 768mb Ram. Nvidia 6200 Graphics card (I've switched between the onboard and PCI(this one) still no luck). I really want to use Lubuntu and I've been trying everything for the past 2-3 hours. Anything will help.

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• What's the reason in your mind Exception are heavily used in Managed (C# and Java) language but not in C++?

  - by ZijingWu

  AFAIK, a lot of C++ projects don't allow exceptions and deny them in coding guidelines. I have a lot of reasons, for example, Exception is hard to handle correctly if your binary needs to be compiled by separate and different compilers. But it doesn't fully convince me, there is a lot of projects which are just using one compiler. Compared to C++, Exceptions are heavily used in C# and Java and the reason can only be that Exception are not bringing enough benefit. One point is Debugbility in practice. Exception can not get the call stack in C++ code, but in C# and Java you can get the call stack from Exception, it is significant and makes debugging easier. No-CallStack is not the fault of the Exception, it is the language difference , but it impacts the Exception usage. So what's the reason that exceptions are frowned upon in c++ programs?

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• Force Gnome 3 to work

  - by nkg5

  I have Ubuntu 12.10 on dual-boot with windows XP. My PC specifications are AMD Sempron 2800+ 1,6GHz with 512 MB ram and ATI Radeon 9250 graphic card with 128 MB memory. As Unity works slow and I don't like it's look, I installed gnome-shell. But as you know, Gnome 3 won't work on it. But gnome classic without effects works great. Thing is, when I turn off windows (by holding the power button or pressing restart button) my resolution on Linux is changed to 1024x768, and I can only change it by turning off the PC and turning off it's power source. But it is not the problem. The problem is that it runs Gnome 3 after one restart, it also runs better than Unity. My question is: Can I somehow force gnome 3 to work always and disable some of it's effects so it can run better?

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