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• Booting from Live USB leads to command line instead of menu

  - by Alek

  I'm trying to install 12.04 x64 from a USB stick. I created the Live USB as per instructions from ubuntu.com, however, after choosing to boot from USB I get stuck with a command line, titled GRUB. When I type "install", it replies that "no kernel is loaded". On my other PC everything is fine, the Live USB boots just fine. The one I'm trying to install to has UEFI mobo - maybe that's the problem? However, fiddling with UEFI settings in mobo setup (UEFI/Legacy) has no visible effect.

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• brother MFC-J435W wireless scanning issue

  - by ogreen32

  Thanks for taking the time to read this. I have a brother MFC-J435W and I was able to get the printer set up for wireless printing, but it is not allowing me to scan wirelessly. It gives me the message to "check connection". I'll tell you what I've done so far and maybe someone can help me out. I've installed the scanner driver and scan tool I installed Xsane (to see if it would allow the scanner to communicate with the computer and that didn't help). I've tried restarting the computer. After those things I am now at a loss as to where to go from here. Any help would be great. Thanks. I've also searched for this question in the Brother FAQ as well as on here and I haven't found an answer. Thanks again.

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• Energy saving with two batteries (Gigabyte S1080 and similar)

  - by user37155

  my today question is: how do I manage a tablet (Gigabyte 1080) with an additional battery in Ubuntu ? The control bar shows two separate batteries but starts to suck all the energy from the secundary battery, not leaving any power in it and ruining it (if I don't remove it earlier), and then starts with the primary battery. Here you find a description of the secundary battery: http://www.gigabyte.com/products/product-page.aspx?pid=3837#kf Do you have some solutions for a more confortable use of te device, with windows-like drivers maybe ? Is there a graphical tool to manage two batteries in Linux, in order not to ruin them, and possibly to save energy with them ? Many thanks and greetings, Francesco

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• Google Chrome side by side stable beta unstable. How to approach?

  - by sobi3ch

  I have the stable version of Google Chrome on my box. And each time I'm trying to install beta or/and unstable versions then I run into the same problem: The following packages will be REMOVED google-chrome-stable The following NEW packages will be installed google-chrome-beta 0 upgraded, 1 newly installed, 1 to remove and 0 not upgraded. Need to get 34.5 MB of archives. After this operation, 3,109 kB of additional disk space will be used. Do you want to continue [Y/n]? I need to remove the first version before installing another. How can I install stable and beta (and maybe unstable as well) next to each other?

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• Good Blog Software

  - by Darren Young

  Hi, Inspired from an earlier question regarding starting a blog, I have decided to start one myself. I only have 4 months commercial experience in C#, but I am hoping to use my blog as a tool for further learning. Maybe such things as researching and writing about a different design pattern each week, a tricky aspect of C# that I don't yet fully understand, etc, etc. My question is, can somebody recommend any good blog sites suited for writing text and code? Is there any that allow the use of code tags or similar for formatting? Thanks,

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• Code review vs pair programming

  - by mericano1

  I was wondering what is the general idea about code review and pair programming. I do have my own opinion but I'd like to hear from somebody else as well. Here are a few questions, please give me your opinion even on some of the point First of all are you aware of way to measure the effectiveness of this practices? Do you think that if you pair program, code reviews are not necessary or it's still good to have them both? Do you think anybody can do code review or maybe is better done by seniors only? In terms of productivity do you think it suffers from pairing all the times or you will eventually get in back in the long run? Thanks!

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• Why is JavaScript not used for classical application development (compiled software)?

  - by Jose Faeti

  During my years of web development with JavaScript, I come to the conclusion that it's an incredible powerful language, and you can do amazing things with it. It offers a rich set of features, like: Dynamic typing First-class functions Nested functions Closures Functions as methods Functions as Object constructors Prototype-based Objects-based (almost everything is an object) Regex Array and Object literals It seems to me that almost everything can be achieved with this kind of language, you can also emulate OO programming, since it provides great freedom and many different coding styles. With more software-oriented custom functionalities (I/O, FileSystem, Input devices, etc.) I think it will be great to develop applications with. Though, as far as I know, it's only used in web development or in existing softwares as a scripting language only. Only recently, maybe thanks to the V8 Engine, it's been used more for other kind of tasks (see node.js for example). Why until now it's only be relegated only to web development? What is keeping it away from software development?

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• Architecture for html5 multiplayer game?

  - by Tihomir Iliev

  Hello I want to write a HTML5 multiplayer game in which there are rooms with two players answering a series of questions with 3 possible answers, 10sec/question, which are being downloaded from a server. It will have some ratings and so on. I want to make it as scalable as possible. I wonder what technologies to use to accomplish that. HTML5, CSS3 and JavaScript obviously. But what about the server-side? I have been researching and found that Socket.IO + Node.js + mongoDB would do the job but after doing some more research it maybe not. Can you suggest me some kind of architecture for doing this game? Free technologies, if possible. Or what to read and from where to start in order to understand how to do it. Thanx in advance! P.S. I have an experience with HTML5, CSS3, JavaScript, C#, ASP.NET MVC and relational db's.

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• how to "think in templates", i.e. how to know that a problem can be solved using templates and how to adapt to it?

  - by sap

  I decided to improve my knowledge of template meta-programming, i know the syntax and rules and been playing with counteless examples from online resources. i understand how powerfull templates can be and how much compile time optimization they can provide but i still cant "think in templates", that is, i cant seem to know by myself if a certain problem could best be solved with templates (instead of something else) and if it can, how to adapt that problem to templates. so what im asking is, is there some kind of online resource or maybe book that teaches how to identify problems that could best be solved with templates and how to adapt that problem. basically i want to learn to "think in templates". already asked on stackoverflow but once again people just redirected me to resources on how to use templates, when im really asking is how to know when to use template meta-programming and how to adapt that problem to templates. thanks in advance.

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• What is a good method for coloring textures based on a palette in XNA?

  - by Bob

  I've been trying to work on a game with the look of an 8-bit game using XNA, specifically using the NES as a guide. The NES has a very specific palette and each sprite can use up to 4 colors from that palette. How could I emulate this? The current way I accomplish this is I have a texture with defined values which act as indexes to an array of colors I pass to the GPU. I imagine there must be a better way than this, but maybe this is the best way? I don't want to simply make sure I draw every sprite with the right colors because I want to be able to dynamically alter the palette. I'd also prefer not to alter the texture directly using the CPU.

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• Installing Ruby on Rails without access to command line

  - by Darwin

  I'm VERY new to this whole web dev thing but I can program and I liked Ruby when I used it before. Now, I've got web hosting and a domain and a site on there that's currently ran under Joomla but I'd like to experiment with Rails. The most access I can get to the server is FTP and maybe a setting here and there in the control panel. Definitely no command line. Is there a way to just, I don't know, upload ruby on rails to a folder and run it in a browser? That's how Joomla works I think. Literally every article I read about this starts with "you just do sudo get..." mumbo jumbo.

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• Why Wikipedia doesn't appear as a referral in Google Analytics' Traffic sources?

  - by Rober

  One of my clients has a website and got not spammy backlinks in a Wikipedia article. When I test it for SEO purposes with Google Analytics (from different IPs), apparently there is no referral information. On the Real-Time view my test visit is visible but with There is no data for this view in the referrals subview. And this visits appear as (direct) / (none) on the Traffic sources view. Wikipedia is not hiding in any way its links origin, since it is shown in the server visits log. Is Google ignoring Wikipedia as a referral? Am I missing anything else? Update: Now it works, several days after the link was active. Maybe something is detecting for how long the link was there so that it doesn't work just from the beggining, as a security measure? Many visits are actually not recorded.

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• Application to organize / manage installed networks

  - by vicmp3

  I was wondering if there is a Application where you can organize networks. I mean if you have installed some networks you have to note every pc's name, his ip-address and so on. Is there a Application where you can manage it? I saw the monitoring tools but that is not exactly what I'm looking for. Maybe I didnt explain me well, after all my englis his not so good :) For example if I install many different networks I write in a book how I configured them. I write pc-name ip-address ip-gateway ip-broadcast and so on for each network. It will be great if I can do it in a program to organize it well, and for example it gives me a node view of the network.

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• How can I enable audio system on Envy 15t-3200

  - by Dean Howell

  I just received my HP Envy 15 (June 2012 model) and I cannot get my audio system to fully function. This laptop has 6 speakers. 1.) 2 speakers on the front of the laptop (Stereo). 2.) 2 speakers above the keyboard, just before the LCD hinges. 3.) 2 Subwoofer speakers underneath the battery cover facing downward. Only the 2 speakers in the front are working. This is a "Beats" audio system. There have been many beats audio laptops before this one, so maybe if someone has experience with those, it might translate to this device.

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• .htaccess redirect to subfolder in different domain, maintaining old domain in the URL

  - by Naoise Golden

  Redirect has been widely discussed and most problems solved, so I am sorry for opening yet another post about this, but none of the codes I am trying work. I have a WordPress site hosted in http://mydomain.com/clientsdomain.com/wordpress I would like to temporarily redirect http://clientsdomain.com/ to the abovementioned URL, maintaining the clientsdomain.com domain in the URL. So for example http://clientsdomain.com/some/page would be pointing to http://mydomain.com/clientsdomain.com/wordpress/some/page Is this even possible with .htaccess? Maybe som configuration or plugin option with WordPress?

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• How can I install Ubuntu (SO many problems)

  - by Dragos

  I have a question, my friend tried installing Ubuntu on my notebook (Asus g75v) and nothing tried, at one point he went past the installation screen and every he used the mouse the screen flickered and the driver crashed (I assume) and it would go back a step, I heard that there is way to install ubuntu without any graphics, maybe that will help me with the screen flickering (I have a gtx 670m), so we tried WUBI installer, I tried installing with that and it gave me a Wubildr.mbr missing error, so I gave that up after several times, although I do notice that I have an intel driver, and I keep downloading AMD versions, does that effect anything? I'm having trouble installing Ubuntu and I wish to be able to run it on my laptop, I want to learn this OS and I cannot even install it, I am a bit concerned, if anyone can back at me with any answer at all, please don't hesitate to post, just please don't post if you don't know what's going on, thanks for listening! ~cheers -Dragos

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• ubuntu 12.10 graphic does not works correctly

  - by Amin

  I have installed Ubuntu 12.10 but my graphic does not works correctly. I used this command to installation: sudo apt-get install fglrx fglrx-amdcccle fglrx-dev But after the restarting my system, the side panel and upper one does not appear any more! I guessed it maybe that I used some incompatible packages so I removed the graphic card driver by this command: sudo apt-get purge fglrx fglrx-amdcccle fglrx-dev and tried it from graphical way from system setting > Software Sources > Aditional drivers and choosed the second option then applied change. But the resault waas such as before way!! I belive it is because of the Ubuntu does not know my graphic card. I am using VAIO VPCEA2TGX (N/A) and my graphic cart version is Mobility Radeon HD 5400 Series if it is matter. So now what is the exact problem and what I have to solve this?

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• apache2 server returns (400) syntax error

  - by Thomas E

  There are 900 paths in the googles index to our homepage containing illegal characters. Example: http://www.seriesam.com/filmaffisch/TC%4NK Note the character "%4N". I have no idea where they come from, but would like to update google index with a correct URL using "canonical" in the html code. But the problem is our apache2 server immediately sends a 400 error if you click the link above. How can I configure apache2 not to give an error code, but instead treat the link above as "correct"? Maybe replacing the char %4N with nothing.

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• Is it bad style to redundantly check a condition?

  - by mcwise

  I often get to positions in my code where I find myself checking a specific condition over and over again. I want to give you a small example: suppose there is a text file which contains lines starting with "a", lines starting with "b" and other lines and I actually only want to work with the first two sort of lines. My code would look something like this (using python, but read it as pseudocode): # ... clear_lines() # removes every other line than those starting with "a" or "b" for line in lines: if (line.startsWith("a")): # do stuff if (line.startsWith("b")): # magic else: # this else is redundant, I already made sure there is no else-case # by using clear_lines() # ... You can imagine I won't only check this condition here, but maybe also in other functions and so on. Do you think of it as noise or does it add some value to my code?

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• Problems about responsiveness and keyboard/mousepad not working

  - by ChrisTheNoob

  So I installed Ubuntu 12.04, I'm very new at this and want to get into the world of Linux but have run into nothing but problems. I have an Acer Aspire 5553g. First off, my keyboard won't work. Second, my computer has more than enough of everything to run Ubuntu smoothly, but everything runs extremely slow. (You move the mouse and it gets there a few seconds later) It's to the point where I can't even use it and I really want to. I'm tired of Microsoft stuff and I've been looking at learning how to use Linux based operating systems for a while. Please send me some help to fix these issues and maybe some tips to help get me started. Thanks in advance chris

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• Does attending the upcoming Devdays 2011 have some value for a resume?

  - by systempuntoout

  This fall I'm 99% going to London to attend the awesome Devdays 2011; I have many reasons to go there and some of them are: Professional stuff Great people Awesome topics Unicorns Passion London :) Obviously all the cool technologies that will be discussed are light years far from my daily work but useful for my side projects and maybe for some future employment. Now, to get to the point; a coworker said to me that he won't come with me because Devday London is expensive, and something expensive should reward you with a certificate, a certificate that could have some value to the eyes on an employer. Is he right? Do you think that attenting to this kind of event have some value on a resume? Should it be highlighted? Does it have any value for a future employer?

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• Sceptic in a SCRUM Team

  - by Sorantis

  My company has recently switched to an Agile WoW and as a part of it we've started using SCRUM. While I'm very comfortable with it and feel that this WoW is superior to a traditional one, some of my teammates don't share the same opinion. In fact they are very skeptical about "all that agile stuff", and don't take it seriously. As an example, one of the teammates is always late on the meetings, and doesn't really care about it. The management IMO tries not to notice this (maybe because it's a new Wow, and it takes time for the people to get used to it). My question is, how to address this issue not raising a conflict inside the team?

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• Are there jobs which are oriented towards optimisation programming or assembly

  - by jokoon

  3D engine programmers have to care a little about execution speed, but what about the programmers at ATI and nVidia ? How much do they need to optimize their driver applications ? Are there jobs out there who only purpose is execution speed and optimisation, or jobs for people to program only in assembly ? Please, no flame war about "premature optimisation is the root of all evil", I just want to know if such jobs exists, maybe in security ? In kernel programming ? Where ? Not at all ?

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• How do I get the point coords of a rotated SFML shaperect?

  - by user15498

  I am trying to get collisions of bullets working, and am using SFML. I am using code to get the position of the points of the rectangle for collisions, however I think there's a way to do this without having to get points but by simply getting the points from SFML, since the shape is a rectangle and the points are stored in that way. Is there a way to do that? Through a combination of getPoint() and getGlobalBounds() maybe? While on this topic, is it better to use shapeRects or sprites? I used to only use sprites, however with the addition of textures and more low level stuff I think it would be best to switch to using rectangles and setting their size.

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• VNC Server not responsive after a few days

  - by assylias

  I am new to Ubuntu (11.10) - I installed Ubuntu on a box which has no screen and no keyboard. I connect to that box via tightvncserver. The box is mostly used as a file and media server (i.e. samba + XBMC). So far so good. I can connect via VNC to the box and take control of it. But after a few days, when trying to connect via VNC, I don't get a response. The media server is still on, ping is fine, but VNC is down. The only solution I have found is to plug a screen and keyboard and reboot. I am not sure how to diagnose the problem (maybe some log files?) or if this is just a configuration issue. Any help appreciated.

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