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• Atheros 9250 wireless card keeps on disconnecting

  - by Vizi Balázs

  So I bought a Lenovo G575 laptop for learning purposes and found that the connection just simply disconnects if i'ts in use for downloading and it also does disconnect in every 2-5 minutes while browsing.I tested the card with Win7, it worked nicely.Since then I searched through all the topics connected to this card, also tried using older distros, Maverick ended up with the same results as the actual 12.04 distribution.I dont think it's the router cause i could access it from Win7.It's causing me a trouble using an external usb, cause it's taken from another PC in the house.I would be really grateful if someone could explain what should i do to fix it. Thanks in advance for the help

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• Used DBAN to wipe Lenovo u410 then installed Ubuntu. Need to install windows 8, but I get an error.

  - by David

  When I try to boot from my windows 8 USB (tested on a separate PC), I get this error text "The boot configuration data for your pc is missing or contains errors." I want to install windows again so I can fix a battery issue I'm having. Lenovo's power management app has an option to keep the battery at 60% if the laptop stays plugged in most of the time. I enabled this, then formatted without changing it back. I think there might be a raid setup that I may need to remove or something. I don't mind removing Ubuntu and starting fresh. I would just love some help with all this, I'm a noob when it comes to Linux.

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• How to draw a global day night curve

  - by Lumis

  I see many applications which have world-clock map, and I would like to make my own to enhance some of my mobile apps. I wonder if anybody has any knowledge where to start, how to draw a curved shadow representing the dawn and the sunset on the globe. See the example: http://aa.usno.navy.mil/imagery/earth/map?year=2012&month=6&day=19&hour=14&minute=47 I think that this curve goes up and down and creates an artic day/night etc Perhaps there is some acceptable approximation formula without a need to load data for each our and each global parallel and meridian...

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• Are Java certifications important for an architect role?

  - by Tahir Akram

  My this question is career path related. I want to know how much Java Certifications (SCJP, SCWCD and others) are important for an architect position. If a person posses a good experience in Java development and want to pursue his career on architect level, do you guys think he need to have certification on his CV. If he has never worked on lead developer roles? If you conducting my interview for an architect position. And I have worked as a Java web developer in different teams having 5 years of exp. Never lead any. And I am having certification badges on my CV. How can a developer make his career path towards being an architect in a team?

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• Connecting/Removing a Second Monitor with Multiple Workspaces

  - by Ben

  I am running 12.04 on a laptop. I use workspaces extensively to manage different projects. When I take my laptop home, I plug in an additional monitor. The problem I am having is that whenever I plug in the additional monitor, all of my windows, regardless of what workspace they were in before I connected the additional monitor, move to workspace 1. This forces me to go through all the windows and manually move the windows back to where I had them. I don't think adding a monitor to each workspace should cause windows to move around between workspaces. Any thoughts or ideas on how to fix this? Know of any workarounds? Thanks in advance!

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• Facebook Connect with CodeIgniter login problems

  - by Alastair Dewar

  Im having a problem using Facebook Connect on my latest website. Im running it using the CodeIgniter framework and Elliot Haughin's library (http://www.haughin.com/code/facebook/). Everything is setup okay, when the user goes to login, the request is sent to Facebook okay and returns with the code (which i presume identifies the session?). However, it doesnt seem to update the library, and after doing all this still thinks that the user is not logged in. It makes me think its a bug in the library itself, but I can't see anyone else with this problem. I have tried dumping the error log from the library but it doesnt find any problems. If someone could shed any light I would be so grateful!

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• Best way to address this Magento issue

  - by robgt

  I am in need of some advice/pointers on how best to attack a problem I am faced with in Magento 1.4.0.1. Here is the scenario: Consider a product catalog of multiple thousands of products in which there are many and various retail markup percentages. There is a need to sell some of those products to other retailers, and I need a way to easily categorise them into percentrage markup groups, so that the other traders can easily purchase items from us without needing to call and confirm pricing. All products prices are added to the magento database including VAT - so the actual retail value is the starting point. I think this needs to be done by adding an attribute on the products that determines the maximum discount level that can be applied to any given product. Obviously, this would entail a massive amount of work to update every product. Is there a way to achieve what we need that I don't yet know about (within Magento)? Can single attribute values be mass-populated somehow, without affecting other attributes such as name/description/etc?

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• Virtualbox will run from 32bit installation CD but not 64bit.

  - by MetaDark

  I am trying to set up Windows in Virtual Box, so I don't need to reboot in the rare occasion that I actually need it. The problem is, Virtual Box doesn't preform any errors when I insert the 32bit installation CD but when I try to use the 64bit installation; What!? I am already using the installation disc! I've checked my BIOS to see if I have SVM (AMD's version of VT) disabled and all I see is "Enabled" I have a K9N6PGM2-V2 motherboard A Triple Core AMD Athlon II A Nvdia NForce 430 integrated graphics card 4GB of RAM An 80GB IDE And a 1TB SATA I don't think the last three specifications matter but just in case XP I am pretty sure the CD isn't broken ( I am going to make sure in just a moment ), what could be the cause to this problem? Edit: The 64bit installation CD is not broken, but I found out when trying to install from the 32bit version that it's trying to upgrade, not preform a fresh install - Odd.

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• Sharing banner on 3rd party websites, concerned about limited resources

  - by Omne

  I've made a banner for my website and I'm planning to ask my followers to share it on their website to help improve my rank. my website is hosted on GAE, the banners are less than 5kb/each and I must say that I don't want to pay for extra bandwidth I've read the Google App Engine Quotas but honestly I don't understand anything of it. Would you please tell me which table/data in this page should be of my concern? Also, do you think it's wise to host such banners, that are going to end up on 3rd party websites, on the GAE? or am I more secure if I use free online services like Google Picasa?

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• Triangle Strips and Tangent Space Normal Mapping

  - by Koarl

  Short: Do triangle strips and Tangent Space Normal mapping go together? According to quite a lot of tutorials on bump mapping, it seems common practice to derive tangent space matrices in a vertex program and transform the light direction vector(s) to tangent space and then pass them on to a fragment program. However, if one was using triangle strips or index buffers, it is a given that the vertex buffer contains vertices that sit at border edges and would thus require more than one normal to derive tangent space matrices to interpolate between in fragment programs. Is there any reasonable way to not have duplicate vertices in your buffer and still use tangent space normal mapping? Which one do you think is better: Having normal and tangent encoded in the assets and just optimize the geometry handling to alleviate the cost of duplicate vertices or using triangle strips and computing normals/tangents completely at run time? Thinking about it, the more reasonable answer seems to be the first one, but why might my professor still be fussing about triangle strips when it seems so obvious?

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• To implement registration page with Vaadin or not?

  - by JVerstry

  This is a tactical implementation question about usage of Vaadin or in some part of my application. Vaadin is a great framework to login users and implement sophisticated web applications with many pages. However, I think it is not very well suited to desgin pages to register new users for my application. Am I right? Am I am wrong? It seems to me that a simple HTML/CSS/Javascript login + email registration + confirmation email with confirmation link cannot be implemented easily with Vaadin. It seems like Vaadin would be overkill. Do you agree? Or am I missing something? I am looking for feedback from experienced Vaadin users.

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• What is Object Oriented Programming ill-suited for?

  - by LeguRi

  In Martin Fowler's book Refactoring, Fowler speaks of how when developers learn something new, they don't consider when it's inappropriate for the job: Ten years ago it was like that with objects. If someone asked me when not to use objects, it was hard to answer. [...] It was just that I didn't know what those limitations were, although I knew what the benefits were. Reading this, it occurred to me I don't know what the limitations or potential disadvantages of Object-Oriented Programming are. What are the limitations of Object Oriented Programming? When should one look at a project and think "OOP is not best suited for this"?

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• What to do?! Upgrading from 12.10 to 13.04 failed :(

  - by Jon Ramirez

  I got an update reminder to go from 12.10 to 13.04. I followed the instructions, was able to download the package, and started installing. Up to a point where my computer (seemed to) restart and there was just a black screen (with the backlight on) for more than an hour. Then I decided that this was too long for an installation and forced my laptop to shut down. I think that messed it up. Now I'm stuck in what seems to be 13.04 with bits of 12.10 in it. I tried to upgrade again through software updater but it goes to Partial Upgrade. But when I try that, I get this error message: "An upgrade from 'raring' to 'quantal' is not supported by this tool." Help! What should I do! I'm running my Ubuntu on my Dell Inspiron.

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• Where to find a mentor?

  - by Fanatic23

  I have been looking around for resources that discuss about mentors, including questions in the stackexchange network. I see that the general response has been to join open source projects and/or check out local user groups if there exists any. Are we sure that joining open source project can get me a mentor? It can grab eyeballs, yes, if the project is exciting enough but a mentor? I am not so sure. What do you guys think? Finally, I'd want my mentor to be in a specific domain as opposed to just being a coding wizard and that makes the search even more difficult. Suggestions?

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• Can't enable Bluetooth 13.10

  - by user205872

  I'm a new user to Ubuntu. I previously installed Xubuntu 13.04 on my Compaq nx8420 and was able to use Bluetooth with no issues. I recently performed a clean install of Ubuntu 13.10 (not Xubuntu), and now can't enable bluetooth. I go to the default Bluetooth app, move the slider to 'On' and it slides straight back to 'Off'. Do I need to install any extra packages or use an alternative app to get Bluetooth working? I can't think of a reason why it would work in Xubuntu 13.04, but not Ubuntu 13.10. Thanks in advance for any help. Zac

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• systems/software engineering design process

  - by adam kim

  I just developed my first non-trivial android app. It was a complete nightmare. I came up with an idea, build the app, changed my idea, and implemented a lot of input from others on new features. All in all my app took 10 times longer than I think that it should have, it is almost impossible to look the source code and tell what's going on with the classes, and may or may not have unused methods that I'll never be able to find... So I would like an opinion from those of you with experience on how to plan out my designs for the future. I created a flow chart (pencil drawn) of a plan: I would like constructive criticism.

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• WordPress bot issues

  - by Paul

  I need to implement a blog into a clients site as he is unhappy with his current basic CMS driven solution. It needs to suit both seo and the current style and as I'm a front end dev/designer and they don't have budget to redevelop - the only solution I can think of is to setup a Wordpress blog and restyle to suit. My only worry about this is the current press reports on WordPress being affected by webbots. I understand the main worry Is if you use an id of admin, but I'm concerned that regardless of this the site could be bombarded with bot requests and cause timeouts! Is this valid? If so is there any way to avoid this issue!? If not can anyone recommend another good SEO friendly blog solution!?

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• Why would one overload the && and & operator?

  - by acidzombie24

  The same question goes for | and ||. Why would one overload or 'use' the & and && operator? The only use i thought of are Bitwise Ands for int base types (but not float/decimals) using & logical short circuit for bools/functions that return bool. Using the && operator usually. I cant think of any classes that use those operators. Absolutely none. I know a class might support + (and not '-') which combine two strings together. I seen an object such as datetime overload '-' so two dates can be subtracted to make a timespan (obviously you cant add two dates) but i never seen &, &&, | and || used. Does anyone know of a use? In any language?

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• Development on Terminal or IDE [on hold]

  - by Taylor Flores

  I've been using nano, make, gcc, and gdb for 6 months now and I've found it much easier than using VS or Codeblocks. But I'm wondering now: Is development on a terminal more/less efficient that using an IDE? In what situations is one preferred more sensible than the other? I'm not asking about opinions, I want to know if there's specific reasons to use one over the other. From what I can gather: terminals can be used on environments where a GUI is not available terminal projects can be created and configured more quickly IDEs contain better syntax highlighters (ie identity highlighters) This question is C biased, but I think it's relevant to other languages as well.

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• High Usage of RAM by wxPython's GUI and need some advice to reduce it

  - by user67024

  I've recently developed a GUI in wxPython for windows platform. It contains a five tabs, 4 of them are just richTextCtrl boxes and the other one has controls for uploading files, buttons, textctrls, a slider etc.. As I was new to GUI development in Python, I used wxFormBuilder to generate some of the code using a good amount of sizers. So, now the problem is that the GUI starts off with a initial memory of around 40MB which is too much for such a simple application (Or so I think) . Also, when the functions handling the functions use huge lists as the program is for debugging large data logs and identifying the problems in'em implying that I can't afford memory for GUI. So, how can I reduce that start working memory size? Is it a general issue in wxPython? And currently trying use profilers but not sure if it's going to help.

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• 3D BSP rendering for maps made in 2d platform style

  - by Dev Joy

  I wish to render a 3D map which is always seen from top, camera is in sky and always looking at earth. Sample of a floor layout: I don't think I need complex structures like BSP trees to render them. I mean I can divide the map in grids and render them like done in 2D platform games. I just want to know if this is a good idea and what may go wrong if I don't choose a BSP tree rendering here. Please also mention is any better known rendering techniques are available for such situations.

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• Will Unity allow users to change the color/appearance of the top-Panel?

  - by Sam

  I'm very excited by the functional design principles and keyboard shortcuts that are being implemented for Unity. And function of use is more important to me than looks. However, after experiencing the aesthetic beauty of the display of the top panel in gnome-shell, I was wondering if users would be able to alter the color of Unity's top panel? IMHO it does not look as good as the gnome-shell implementation (or mac OS X/iPad). I think if an alternate color/appearance were chosen for the panel, it would make a big difference aesthetically. Is there a way to make it Black like gnome-shell? Or are the color choices limited to theme-designs as pointed out in this answer? For efficiency and clarity, the Panel should be better differentiated from application controls. The panel should be a different color because it has a "constant (always present) state," unlike application controls. For contrast and easy-recognition, I would like to make the Panel black (like gnome-shell) but make the application controls (e.g., those of Firefox) "Inverted"

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• Should programming languages be strict or loose?

  - by Ralph

  In Python and JavaScript, semi-colons are optional. In PHP, quotes around array-keys are optional ($_GET[key] vs $_GET['key']), although if you omit them it will first look for a constant by that name. It also allows 2 different styles for blocks (colon, or brace delimited). I'm creating a programming language now, and I'm trying to decide how strict I should make it. There are a lot of cases where extra characters aren't really necessary and can be unambiguously interpreted due to priorities, but I'm wondering if I should still enforce them or not to encourage good programming habits. What do you think?

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• When to start thinking about scalability?

  - by Rits

  I'm having a funny but also terrible problem. I'm about to launch a new (iPhone) app. It's a turn-based multiplayer game running on my own custom backend. But I'm afraid to launch. For some reason, I think it might become something big and that its popularity will kill my poor lonely single server + MySQL database. On one hand I'm thinking that if it's growing, I'd better be prepared and have a scalable infrastructure already in place. On the other hand I just feel like getting it out into the world and see what happens. I often read stuff like "premature optimization is the root of all evil" or people saying that you should just build your killer game now, with the tools at hand, and worry about other stuff like scalability later. I'd love to hear some opinions on this from experts or people with experience with this. Thanks!

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• How do I handle a Controller that's not controlling a specific Model?

  - by Ben Brocka

  I've got a nice MVC set up going but my website requires some views that don't map directly to a model. Specifically I've got some generic Reports users need to run, and now I'm creating a utility for comparing some system configurations. Right now the logic is crammed into a Reports Controller and I'm starting a Comparison Controller but this feels like a big abuse of the system. Both controllers use an assortment of different Models to pull data from, and they're only related based on what the user is doing. Reports are run from the Reports Controller and their views are all grouped together in the file system/URL structure. Is this an acceptable use of the Controller paradigm? I can't think of a better way to structure my Controllers, and making a Controller for each model I'm using to make reports/ect doesn't seem like a good idea; I'd end up with one Controller/Model/View per report or comparison, vastly complicating the apparent structure of my site.

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