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• Network printer gets disabled occasionally

  - by Yossi Farjoun

  I'm running Ubuntu 10.04 and have a HP-Laserjet-3005P network printer. Occasionally (perhaps related to rebooting) the printer, which is setup as the default printer, becomes disabled. After realizing that I'm not getting anything printed, I must then open printing preferences and click on "enabled". Then it prints happily until the next time that it becomes disabled... Any ideas why this is happening and/or how I could fix it? I know I'm giving very little information, I can't think of anything else to give...if there's something I should be providing, please let me know.

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• Is there an easy way to (temporarily) disable the display timeout?

  - by Izzy

  In KDE 3.5 there was the powermanager plugin for the kicker panel, where one could easily switch between different profiles. So normally, I want the display to go to sleep after, say, 10 minutes of user inactivity. But when I watch a video, this should not happen. I know I could go via the KDE launcher, settings, powermanager, and change the setting. But this is too complicated for daily use. I also know there are those activities. But I don't want to change background etc., just the display timeout. Furthermore, when I tried this, many of the open apps simply crashed and got restarted. I simply don't like this approach. Preferably, it would be something to plug-in to the panel, which opens a menu to select the profile -- as it was with KDE 3.5. Is there a similar solution I missed?

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• Programming for Digital frames

  - by spartan2417

  A project has recently come to my attention but i have no idea where to start or even if its possible. The idea revolves around programming a clock that is displayed inside a digital photo frame. The user would then be able to put different pictures corresponding to different times inside a usb pen for example, which would load as soon as you put the usb in. The project itself would be a really neat project - if it was just on a computer. I have no idea if what im talking about it even possible on a digital photo frame and if it is what language? Anyone who has any input at all would be great. My current idea is to maybe have a small device at the back, SSD, that runs the program through a screen, completely by passing standard digital photo frames, again though i dont know how to begin with this. And yes ive tried google (although it helps to know what to google).

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• Help Improve Oracle Products Usability at OOW

  - by Shay Shmeltzer

  We already wrote about all the great ADF related activities at OOW. But we wanted to also let you know about an additional activity you can participate in at OpenWorld: The Oracle Middleware User Experience team will be conducting focus groups and customer feedback activities at Oracle OpenWorld 2012 (Oct. 1st - Oct. 3rd). Customer participation helps Oracle develop outstanding products and solutions. Professionals of all types are invited to participate: Directors, Project & Product Managers, Finance, Sales, Human Resources, Marketing, Recruiters, Budget Managers,  and more. **To participate in these sessions you do not have to be registered for Oracle OpenWorld.** If you or someone you know is interested in participating, please email [email protected] with the following information: Name: Company Name:  Job Title: Email: Phone Number (work, mobile, include country code):

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• svn-based versioning tool, problem with network timeout

  - by Scarlet

  My dev team was committed a versioning tool based on Subversion to run on Windows (our svn client is sliksvn). We're developing with Delphi XE2, should that matter. We're asked to implement a "check for updates availability" feature, which has to work as follows: Connect to the SVN repo via svn+ssh protocol; See if there are changes to receive and list them; Let the user decide if he wants to receive changes or not. We don't have a great knowledge on svn, so we thought to implement that thing client side by a certain number of CreateProcess calls that wrap directly proper svn commands. Anyways what we perceived is that if network problems should arise, such like a connection drop, svn client hangs forever waiting for the operation to close instead of failing for timeout. We know that CreateProcess can be given a timeout argument, but it wouldn't be correct to use it, as we can't know from outside how long will be the svn operation taking to complete. Is there any way to avoid that deadlock?

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• How to conduct A/B split testing with AdSense?

  - by None

  Ok so I have decided to A/B test my AdSense ads. I have run a few tests, but I don't know what conclusion to draw and how to keep track of things. Some specific questions: If I have 2 test units, 1 wins. I test that with a new and so on. How do I find if say the fifth one did better than the first one? How do I keep track of things? Do I let the variables independent of each other, because they certainly are not. In real life, font size can affect CTR even if the colors are different. I can test blue color with red color, and then test Arial font with Georgia, but how do I know which combination is the best? This would result in way too many test units. I tried Googling a lot, but I could not find answers to these questions.

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• What is the feature that imports URL information into facebook and google+?

  - by Michael

  What I am trying to do. I want to be able to import heading, short description and an image into my website, just using a link. I am using Joomla but can switch to any CMS, or try to build an extension myself. The problem is I dont know where to look for example code, or what to look for. To me it doesnt seem like too difficult a process. Also, the code must be out there, with a little tweaking I can probably use someone elses, but I dont even know what to search for.

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• Ubuntu 12.10 and Gnome-Shell : can't see nor launch apps except with Alt + F2

  - by Ratoune2008

  I've installed Ubuntu 12.10 and Gnome-Shell 3.6. Everything worked fine till the moment I've began to customize the main menu (apps wich appears in Dash and so on). I don't know wether I've done something wrong or if there is a bug : suddenly, the Dash became empty. My favourite docks too, except the "Show apps" button. When I activate it, there is only an empty dash, no apps showed. The only way I can access an app is using the "Alt+F2" shortcut. I've tried to restart gnome-shell (Alt-F2 / r) but nothing has changed... A logout and a reboot have not changed ... Do you know how to repair the gnome-shell ? Thanks for your help...

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• Ubuntu 13.04 is showing some error while opening my computer

  - by Singh

  Few months before when I was using Ubuntu 12.04 then I found some errors while starting my computer. Due to this problem I had given my CPU to a shop to repair it I don't know what he has done to my CPU but I only know that finally I got my CPU with Ubuntu 13.04. The technician was unable to make any partition and I also think that he had installed 13.04 over 12.04 and so now my computer is showing some error when I'm starting my computer the error is as follows: error: attempt to read or write outside of the disk 'hd0'. grub rescue _ Before showing this error, few times my computer was working very slow. So kindly someone tell me that is there any way by which I can start my computer. Please also tell me that what things I have to keep in mind while using Ubuntu so that in future I find no difficulties(errors) while using Ubuntu.

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• Finding out the shared hosting providers located in a particular data center

  - by unixman83

  I know the physical location of data-centers that I want my website hosted in. One of these is located on 350 E Cermack in Chicago, IL. My problem is that I am looking for all the providers of low-cost shared hosting in this data center. Do you have a list? And if you do have such a list can you please tell me how you came up with it? I know many discount hosting providers are physically located in the Arizona-Utah areas. But I am located near Chicago.

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• I installed Ubuntu alongside Windows but I can't see it in Windows' boot menu

  - by André Hallé

  I have a second machine where Ubuntu 12.04 LTS and Debian Squeeze are installed on the same HD and when I boot, I have this grub menu where I can choose which partition I will used. It works perfectly! But in my Windows environment that's another story. Now after making almost everything that I know, to make it work along Windows 7, there is no entry in the boot menu of Windows (I know, Ubuntu use grub but anyway there is surely a way to fix it, access it?). Why there is no Ubuntu entry? Why the installation gave me no error while I have this strange situation of having a "ghost OS" called Ubuntu installed somewhere in my second HD in a partition made especially for it and not being able to access it, starting it, having it working? Am I wrong? If I am, what's the problem? If I'm not, what's the need of Wubi?

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• What's the difference between the code inside a finally clause and the code located after catch clause?

  - by facebook-100005613813158

  My java code is just like below: public void check()throws MissingParamException{ ...... } public static void main(){ PrintWriter out = response.getWriter(); try { check(); } catch (MissingParamException e) { // TODO Auto-generated catch block out.println("message:"+e.getMessage()); e.printStackTrace(); out.close(); }finally{ out.close(); } //out.close(); } Then, my confusion is: what the difference if I put out.close() in a finally code block or if I just remove finally code block and put out.close() behind catch clause (which has been commented in the code). I know that in both ways, the out.close() will be executed because I know that whether the exception happened, the code behind the catch clause will always be executed.

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• Are these non-standard applications of rendering practical in games?

  - by maul

  I've recently got into 3D and I came up with a few different "tricky" rendering techniques. Unfortunately I don't have the time to work on this myself, but I'd like to know if these are known methods and if they can be used in practice. Hybrid rendering Now I know that ray-tracing is still not fast enough for real-time rendering, at least on home computers. I also know that hybrid rendering (a combination of rasterization and ray-tracing) is a well known theory. However I had the following idea: one could separate a scene into "important" and "not important" objects. First you render the "not important" objects using traditional rasterization. In this pass you also render the "important" objects using a special shader that simply marks these parts on the image using a special color, or some stencil/depth buffer trickery. Then in the second pass you read back the results of the first pass and start ray tracing, but only from the pixels that were marked by the "important" object's shader. This would allow you to only ray-trace exactly what you need to. Could this be fast enough for real-time effects? Rendered physics I'm specifically talking about bullet physics - intersection of a very small object (point/bullet) that travels across a straight line with other, relatively slow-moving, fairly constant objects. More specifically: hit detection. My idea is that you could render the scene from the point of view of the gun (or the bullet). Every object in the scene would draw a different color. You only need to render a 1x1 pixel window - the center of the screen (again, from the gun's point of view). Then you simply check that central pixel and the color tells you what you hit. This is pixel-perfect hit detection based on the graphical representation of objects, which is not common in games. Afaik traditional OpenGL "picking" is a similar method. This could be extended in a few ways: For larger (non-bullet) objects you render a larger portion of the screen. If you put a special-colored plane in the middle of the scene (exactly where the bullet will be after the current frame) you get a method that works as the traditional slow-moving iterative physics test as well. You could simulate objects that the bullet can pass through (with decreased velocity) using alpha blending or some similar trick. So are these techniques in use anywhere, and/or are they practical at all?

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• Where can I get fresh new Wine DLLs?

  - by SuperScript

  I was acting careless today and I accidentally deleted one of the .dlls in my Ubuntu Wine installation, ~/.wine/drive_c/windows/system32/ole32.dll to be exact, and need a new fresh copy of only this one .dll. I know that reinstalling will fix it, but I have installed quite a few programs and do not want to have to do such a drastic thing just to fix this one problem. So, I'm wondering if there is somewhere that I can download this original .dll as it came with my original Wine installation. I have found the SourceForge repository, but it only has .h and .c files and I do not know how to build them into a .dll. Can anyone give me a link to download, or instructions to build my missing .dlls?

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• Easy Server-Side Language

  - by Nizar

  Most of programming languages (Server-side languages for web development) needs a learning curve and requires some time to learn. However, I'm sure there is a difference between them. So, for example you can master the 'X' language in less time than the 'Y' language. I'm a beginner in web development, meaning that I just know HTML and CSS and now want to choose the right tool for building dynamic sites. What I'm looking for is a language that is easy to master in less time than other languages. So, is there a language that can suit my needs? If so, please let me know about what should I learn in it? (for example, which frameworks?, libraries?, IDEs?, databases?, etc). In the end, I don't want to regret my choice of the language and want to learn solid basics in it and in programming in general.

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• Programmer's career path

  - by kender

  I've been working as a programmer for the last few years - different companies and freelancing, mostly developing internal-business web applications (well, that's the current model of development, it seems). Besides simple coding I was working on specs, designing applications, and all those around-like things. My question is, what's the career path I should be aiming for? Is it like working on code for the rest of my life? :) Or do programmers make a good manager-position people (I know, those require quite different set of skills) and I should try to improve myself to this direction? I know it's very subjective. Thing is, lately I find myself much more into the designing/working on specs part of the development project then the coding itself. How do you see it? Would you like to go from development to management? Would you like to work on a project with a manager that used to be a coder? Would you like to hire one? :)

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• Best stats tool for cross-domain traacking

  - by kidbrax

  We build a webapp that allows users to run the app under their own subdomain. So we run the app under search.domainX.com, search.domainY.com and so on. They each have their own Google Analytics to track individual stats. But we want to know what general traffic for all clients of our app. So we want to know stuff like "among all our clients we had x number of views." What is the best way tool to track that sort of thing.

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• WCF Firestarter Online Saturday 6/19/2010

  This weekend is the WCF Firestarter in New York City.  Registration to attend in person is SOLD OUT and were looking forward to a full house in the Big Apple on Saturday!  You can see the event agenda at Peter Laudatis blog, as well as at MSDN Events.  Firestarter events have been quite popular wherever Microsoft has hosted them around the country. Are you NOT in New York this weekend and feeling a little left out?  Dont worry we know there are plenty of folks who dont live...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 to run generate ajaxful_rating on Rails 3.0.9?

  - by user28931

  on Windows 7, i want to use gem ajaxful_rating to rate my topic in a website in Rails app. i can install this gem successfully by gem install ajaxful_rating refering to https://github.com/edgarjs/ajaxful-rating. the sample, script/generate ajaxful_rating user. i searched script/generate is available on Rails 2.x. but now i used Rails 3.0. It's somewhat difficult. i don't know how to generate. Does someone know it? or which rating gem do you use in Rails 3.0.x? thanks in advance.

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• CS4326/7 sound chipset on Thinkpad 600E

  - by user7120

  OK, I know this has been a problem for a while, and I know by now this really old Pentium II laptop is really really really obsolete. However, I have installed Lubuntu 10.10 on this laptop and things seem to work fine except the sound. Now I've read and gone through a bunch of tutorials and guides to working around this, none of which have worked. I have gone through this Ubuntu bug report and that doesn't work either. The problem I think is that the latest workaround is (understandably) about two Ubuntu versions behind. Now I'm not sure what has changed since then to make that workaround not work, but I would appreciate any help. Thanks

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• Work with 64-bit VM in Windows 7

  I attended a Microsoft Office and SharePoint 2010 HOL 1 day workshop last week and wanted to setup a VM to try the new features in my own laptop. The presenter in the workshop implicitly mentioned a tool called VirtualBox (because it's not a MS product?) but I have no clue what it is at that moment. Until today, I saw a very useful blog and thanks to Guy and Rolly. I know what to do next in order to setup the VM in my Windows 7 safely now. :)...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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• Using allocators for different systems

  - by chadb

  I am going over the memory architecture for my game and even though I know my memory budgets may not be final, I at the point where I can start using them in a general sense. I know that I will need several allocators (for systems such as audio, rendering, etc) but I am unsure of how they will be accessed. I do not use singletons, so I can't just have something such as AudioManager::GetInstance().get_allocator(). Instead, I need to find a different method of usage but I am not sure of how. How can I store and call my allocators needed for several different systems over engine in an efficient manner?

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• How can I get a 2D texture to rotate like a compass in XNA?

  - by IronGiraffe

  I'm working on a small maze puzzle game and I'm trying to add a compass to make it somewhat easier for the player to find their way around the maze. The problem is: I'm using XNA's draw method to rotate the arrow and I don't really know how to get it to rotate properly. What I need it to do is point towards the exit from the player's position, but I'm not sure how I can do that. So does anyone know how I can do this? Is there a better way to do it?

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• How to get out of supporting deadend sales pitches?

  - by JoseK

  As part of being a programmer, you often are asked to provide estimates/ make slideware / do technical demos for Sales teams to present to end-clients. Sometimes we go along for the 'technical' discussions or 'strategic capability planning' or some similar mumbo-jumbo. Sometimes, you kind of know which ones are totally going to fail and are not worth pursuing but the Sales guys present fake optimism and extract 'few more slides' out of you or the 'last conference call'. These don't lead to anywhere and are just a waste of time from other tasks for the week. My question is how do you get out of these situations without coming across as non-cooperative. Updated after Kate Gregory's answer: The problem is related to projects we know are doomed (from the technical feedback we've received) But Sales ain't convinced since they've just had a call higher up the management chain - so it's definitely going ahead !

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• Bukkit send a custom placed name plate?

  - by HcgRandon

  Hello i have been working on a part of my plugin that has waypoints allowing the user to create delete etc. I got to thinking after using and seeing a couple of the disguse plugins. That maybe i could create a command toggle that would show the user where the waypoints they have are! I know how to do all of this i just have no idea how to display a nameplate to the client. I know its possible because disguisecraft does it i tried looking though their code but couldent find much... I belive to get this effect i need to send packets to the client if someone can direct me to a list of bukkit packets or even a solution to sending the client a custom located nameplate that would be fantastic! Thanks in advanced.

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