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• Designing call center applications, what to consider.

  - by Espen Schulstad

  We have customers calling in to place orders. What sort of considerations should I make when building a call center application. Speed is a factor here. We had a powerbuilder application that was extremly fast for a trained user. We want to have the same sort of speed in our new production system. So some thoughts I've made are: Hotkeys are important. Is it faster to use a "wizard", step by step, or should I try to place everything important about the order logically on one sceen and have another screen where you do all searches, pertinent for that order?

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• Problems after upgrading from 10.04 to 12.04

  - by Paul D

  I upgraded to 12.04.1 from 10.04 recently and am running the Gnome Classic (no effects) desktop. I spent a couple of days tweaking the appearance and behaviour but there are two issues that I can't resolve. The mouse cursor frequently disappears, especially when scrolling through web pages or hovering over links/icons with tooltips. Moving the mouse brings the pointer back but it vanishes again almost immediately. Note I don't have unclutter or Parallels installed. The screen no longer fades to black when left idle for too long - it just cuts out. Bad news when watching content online. Any tips greatly appreciated. Cheers...

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• Change administrator username

  - by Fazlan

  I have accidentally typed my name wrong when I created the administrator account. Although I managed to change the user name at the login screen, I am unable to rename the /home/oldusername to /home/newusername. I tried most of the online tutorials, and it failed. The code I tried was this: usermod -l newusername -m -d /home/newusername oldusername But the output is: cannot lock /etc/passwd; try again later. How can I fix the issue and change the folder to newusername and expect all the applications to work as before?

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• Function keys and Hot are switched

  - by Brian

  I recently got a new laptop and installed 12.10 on it. I noticed right away that the "hot keys" on the F keys didn't always do what was pictured and also I noticed that the "hot keys" and the function keys were reversed. e.g. to close a window I have to hit alt-fn-F2 instead of just alt-F2. This is pretty annoying because I've been using the same keyboard shortcuts for years and I don't really want to have to re-learn them. I would also like to switch what the hot keys do, for example the F3 key is pictured as increase screen brightness but it really puts the computer to sleep. I would like to change this back to increase the brightness I looked in keyboard shortcuts settings but these options are not in there. I also downloaded gconf-editor but was unable to find where to change the shortcuts on it. (they weren't at apps \ metacity \ keybinding_commands like others described) any help would be greatly appreciated

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• Collision representation in game overworlds

  - by Akroy

  I'm implementing a 2D overworld where one can walk through an area that is not tile based. I was wondering the best way to implement collisions. In the past when I've done similar things, I've used one image (or set of images) to show an elaborately drawn world and then a second binary image that does nothing but differentiate "wall" and "not wall". Then, I'd use the first for all drawing to the screen, but the second for collision detection. Having another image of the same size to represent collisions seems like lots of overhead. Is there a better way to handle this? (I'm currently using C++ with SDL, although I'm more interested in general concepts)

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• Convincing Upper Management the need of larger monitors for Developers

  - by The Rubber Duck

  The company I work for has recently hired on several developers, and there are a limited number of monitors to go around. There are two types in the office - a standard 15" (thankfully flatscreen) and a widescreen 23". No developer has a machine capable of a dual monitor setup, and the largest monitors went to the people who got here first. Three or four new senior level developers only have a 15" monitor to work on. To make matters worse, there are perhaps a total of 25-30 DBAs/Testers/Admin types in the company who all have dual screen 23" setups. We have brought the issue to management, and they refuse to take away large monitors from people who have been here for years for the sake of new employees, even if they are senior level. We have pitched the idea of testers sacrificing a large monitor for one of our small ones, but they won't go for that either. What can I say to management to illustrate the need of monitors for developers?

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• Only one resolution available in Xorg.conf

  - by Kévin Guilbeault

  I recently upgraded to Ubuntu 12.10 and when I try to change my resolution in NVIDIA X server settings, I only get the native one (1600x900). When I had 12.04 installed, all resolutions were available in the drop down list. My goal is to have twinview working again. I used to set my two screens to twinview and clones, using my HDTV resolution (1360x768) which was previously available in 12.04 for my laptop screen too. In 12.10, I tried to install all of the NVIDIA drivers available except the nouveau driver. I tried to add a new mode using Xrandr --newmode / --addmode, but it didn't work; it coudn't detect my output. I'd like to know if this is a known bug and if there's something to do with that. Thanks!

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• Ask the Readers: How Do You Give an Old Laptop a New Life?

  - by Jason Fitzpatrick

  That powerhouse laptop you bought back in 2006 can’t compete with the sleek ultrabook you just unboxed–but that doesn’t mean you should ship it to the dump. How do you give an old laptop a new lease on life? Whether you tear it apart and rebuild it into something brand new, put it on night duty as a backup station, or install a lightweight Linux distro before passing it on to your relatives, we want to hear all about your tools and methods for keeping old laptops out of the junk bin. However big or small your repurposing project, sound off in the comments below with your tips, tricks, and tools. Make sure to check back in on Friday for the What You Said roundup to see how your fellow readers revitalize their old laptops. How To Delete, Move, or Rename Locked Files in Windows HTG Explains: Why Screen Savers Are No Longer Necessary 6 Ways Windows 8 Is More Secure Than Windows 7

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• Update information outdated, "Failed to fetch cdrom"

  - by user285603

  I have a warning triangle on the top of my screen. When I click on it, it says that my update information is outdated. When I type sudo apt-get update && sudo apt-get upgrade into a terminal, I get this message: W: Failed to fetch cdrom://Ubuntu 14.04 LTS _Trusty Tahr_ - Release i386 (20140417)/dists/trusty/main/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs W: Failed to fetch cdrom://Ubuntu 14.04 LTS _Trusty Tahr_ - Release i386 (20140417)/dists/trusty/restricted/binary-i386/Packages Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs E: Some index files failed to download. They have been ignored, or old ones used instead. Any ideas?

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• pygame.Rect around circle

  - by geekkid

  I'm trying to make a pong game in pygame , but i can't figure out how to but a ball circle , which i can create with pygame.draw.circle into a pygame.Rect object so i can use the colliderect function and manipulate the ball's position. For example, with rectangles, i can do something like this : rect = pygame.Rect(255, 255, 100, 100) pygame.draw.rect(screen, yellow, rect) and then when i change the pygame.Rect object position , the drawing primitives position also changes. How can the same effect be achieved when i want to draw a circle, instead of a rectangle? Thank you.

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• Visual Studio 2010 - Faster Startup with /nosplash

  - by MikeParks

  I read a blog the other day about the /nosplash switch in Visual Studio. Apparently, it's been around a while and I'm a little late on finding out about it. I figured I'd share it for those of you that come across this and didn't know about it as well. Basically all it does is turn off the Visual Studio splash screen which speeds up initial startup time. It's not a big difference but every little bit helps. I choose speed over looks. You can set the switch by right clicking on Visual Studio, selecting Properties, and adding "/nosplash" on the target Property, so it will look like this: "C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe" /nosplash. Feel free to try it out and see if you like it. You can always change it back by just removing the /nosplash switch when you're done testing. There are plenty more Visual Studio switches out there but this is the main one that came in handy for me.   - Mike

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• Problems with Intel graphics and external display

  - by dpcat237

  I have Asus Zenbook ux31 with Intel HD 3000 GPU and Ubuntu 12.10 64 bits. I usually use external monitor and when update GPU controller it removes previous configuration. So after updates Ubuntu only detect external monitor and when I enter to Ubuntu with laptop's monitor Unity doesn't start and I only see black screen. If I re-install Ubuntu all works fine until next GPU update :(( Another think that after some GPU update Ubuntu doesn't detect fine monitor and I have to restart 1-2 times Ubuntu to Unity starts fine ¬¬ Someone have some problem and know some solution? I hope some day Intel GPU will work fine with Ubuntu!

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• How to start gkrellm so that it shows up on all virtual desktops?

  - by Jonik

  I'd like to open the GKrellM system monitor so that it is present on all virtual desktops. How to do that? Using Ubuntu 11.04 (Natty) & classic GNOME (not Unity). Bonus questions: How to skip the gkrellm window from the taskbar (on the bottom of the screen)? How to launch it automatically when logging in? (I can ask those separately, too. Or please point out if some of these are already covered.)

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• Design difficulty for multiple panel forms [closed]

  - by petre

  I have form that consists of multiple panel on the right, a treeview on the left and a terminal richtextbox on the bottom. When i click on a node of the treeview i bring up the panel that is attached with the node. For example i have 10 nodes on the treeview, i have 10 panels that are attached to this nodes. On every panel, i have many textboxes, labels, comboboxes etc. I don't dynamically construct and dispose the items on the panels, i create the items in the designer file of the project. In that case, there is a problem. I really find it difficult to align or place items on the panel because there seems a lot of aligning lines on the screen. What should be done to make the design of the panels easy? I don't want to construct items dynamically. Do i have to do that dynamically or is there a design procedure that make this process easy?

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• What are some methods for pulling information and interacting with flash games?

  - by Xploit

  In general, how should I approach interacting with a flash game pragmatically? The flash game is online and I would like to be able to pull information from the game, make computations, and send the appropriate keystrokes back to the flash game? I'm having difficult deciding how to begin. Any specific libraries or languages that you feel would be best for accomplishing this task? I would like it to be as fast as possible. Are there ways of doing this without taking screen shots and simulating keyboard presses?

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• Got problem with installation. "No root file system is defined."

  - by user92322

  I'm very new with Ubuntu and generally with linux. I saw ubuntu and it seems like this OS is really good and stable, and so I decided to install it alongside my windows 7 OS. I have a few problems with the installation. Here is what I did: I downloaded the 64bit version from Ubuntu official website, and burned it on a dvd. I set the boot sequence to first load from my CD-Rom. Ubuntu installation started, and I chose "Install Ubuntu" in the menu. (where there is also a "Try Ubuntu" option) I clicked forward until I got into the installation type screen As you can see, the installation wont show my actual details about my hard drive! I have 1 hard drive with 750 GB - 80 GB - My main drive with windows 7 OS 600GB - All of my stuff 20GB Free space that I saved for Ubuntu But the installation wont show that!

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• Installer doesn't recognise windows 7 install

  - by SirWaffleRaptor

  I will start off saying I searched a bit for this problem with little success. You see, I am an utmost noob when it comes to Ubuntu and Linux based OS (hence why I want to install it and discover it) and the thread I found were too specific for me to do anything with. Therefore, if you find a thread that is noob-friendly and answers my question, please link it below or please try to answer as simply as possible :) The problem: I want to install Ubuntu 12.04 LTS 64 bit alongside Windows 7 on my main hard drive (to get the choice which one to start when booting). Pop the CD in, reboot and get to the installer screen. I know I'm supposed to have 3 options, but I'm only given the option to erase my hard drive or "do something else". Therefore, my question is: how do I make Ubuntu recognise Windows 7, so it may install alongside it?

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• How can I keep the correct alpha during rendering particles?

  - by April

  Rencently,I was trying to save textures of 3D particles so that I can reuse the in 2D rendering.Now I had some problem with alpha channel.Some artist told me I that my textures should have unpremultiplied alpha channel.When I try to get the rgb value back,I got strange result.Some area went lighter and even totally white.I mainly focus on additive and blend mode,that is: ADDITIVE: srcAlpha VS 1 BLEND: srcAlpha VS 1-srcAlpha I tried a technique called premultiplied alpha.This technique just got you the right rgb value,its all you need on screen.As for alpha value,it worked well with BLEND mode,but not ADDITIVE mode.As you can see in parameters,BLEND mode always controlled its value within 1.While ADDITIVE mode cannot guarantee. I want proper alpha,but it just got too big or too small consider to rgb.Now what can I do?Any help will be great thankful. PS:If you don't understand what I am trying to do,there is a commercial software called "Particle Illusion".You can create various particles and then save the scene to texture,where you can choose to remove background of particles.

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• Changing the rendering resolution while maintaining the design layout

  - by Coyote

  I would like to increase the FPS of my project. Currently I would like to try reducing the resolution at which the scenes are rendered. Let's say I never want to draw more than 1280*720. What ever the real resolution is. How should I proceed? I tried pEGLView->setFrameSize(1280, 720); but only reduces the displayed size of the frame on screen (boxing). In my activity I tried setting the size of the "surface" but this seems to completely break the layout (as defined by setDesignResolutionSize). @Override public Cocos2dxGLSurfaceView onCreateView() { Cocos2dxGLSurfaceView surfaceView = new Cocos2dxGLSurfaceView(this); surfaceView.getHolder().setFixedSize(1280, 720); return surfaceView; } Is there a way to simply change the rendered

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• Question about creating a sprite based 2-D Side Scroller with scaling/zooming

  - by Arthur

  I'm just wondering if anyone can offer any advice on how best to go about creating a 2-D game with zooming/scaling features akin to the early Samurai Showdown games. In this case it would be a side scroller a la Metal Slug, the zooming would come in as more enemy sprites entered the screen, or when facing a large sized boss. A feature that would be both cosmetic as well as functional to the game. I've done some reading and noticed a few suggestions that included drawing different sized sprites, a standard size and zoomed out size. Any thoughts? Thanks for your time.

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• error: no device connected

  - by Prabath Swarna

  I did a fresh install of 12.04 and it went fine, worked on it for several days, but one day the browser crashed and i reset the machine, after that I get this error when i boot; error: no device connected error: no device connected error: no device connected error: no device connected This comes after the BIOS confirmation, and it stays for about 30 seconds, then the grub menu comes and when I selected the default the screen becomes purple and stays like that for a whole Minuit. I thought maybe that is because I have 500GB HDD so i ran the boot-repair, It did nothing at all. I'm sure I did the boot-repair thing right, sorry I forgot the paste URL. If i reinstalled will this error persist.

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• No useful DVB-T card found

  - by Edu

  I am using Ubuntu 12.04 3.2.0-26 kernel and I just added a DVB-T card. I did install the media_build as in (http://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers) After that the Restricted Drivers appeared on the screen and I installed the Firmware for DVB Cards. lsusb shows Bus 002 Device 005: ID 048d:9005 Integrated Technology Express, Inc. which is my card. lsmod shows these things regarding dvb dvb_usb_it913x 22173 0 dvb_usb 32369 1 dvb_usb_it913x dvb_core 110010 1 dvb_usb rc_core 26343 2 dvb_usb_it913x,dvb_usb Nevertheless there is no /dev/dvb on my linux and Kaffeine does not find the TV turner. Can anybody help me installing my TV Card? Thanks

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• After installing Ubuntu 12.10, Windows 8.1 disappears from start up menu

  - by Vaz

  I'm very new to Ubuntu (12.10), so I apologise if I'm not clear at any point! I had a Windows 8 (upgraded to Windows 8.1) and was fed up with it, so I converted to Ubuntu 12.10. I'd hoped to Dual Boot to at least get the benefit of both worlds. I created a partition for it in Windows and installed from a LiveUSB key (and installed into that parition). So now Ubuntu works great, but Windows 8.1 no longer shows up on the start up screen (where you theoretically pick which OS you want to boot in). I was going to try "Boot Repair" as mentioned here and restore MBR, but I don't want to start messing around with stuff I'm not entirely clear with. EDIT: For any of those who stumble here with the same problem, I just read here that a user wiped out his Windows partition by accident... I checked my own computer with sudo fdisk -l and there's only one Device Boot (dev/sda1). I'm not an expert, but I'm guessing that means Windows has been written over.

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• Weird execution of ruby/git executables in Windows [migrated]

  - by Frexuz

  Something strange has happened. I can't run some command line executables in Windows anymore. Steps: Open cmd Run an executable, such as ruby -v or git -h When I do that, a new command prompt opens, running that command (I think, it's too fast to see), and instantly closes again. I've managed to print screen the new command prompt, and it shows that it's running inside this path: C:\Documents and Settings\Administrator\Local Settings\Temp\3582-490 Inside this folder, is the executable I'm tring to run. If I run ruby, then ruby.exe is in there. If I run git, then git.exe is in there. And it's always emptying the folder in between, so there is always just one .exe file

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• No GUI before login on Ubuntu 14.04

  - by Pablo Chinchilla

  After I installed Ubuntu 14.04 as the only OS on my computer on nomodeset to install the Nvidia drivers for my video card. I installed it and all is working properly. The only problem that I have is that when I turn on my compurter I only see command lines instead of the Ubuntu logo. After that the login screen works in a proper way even with the GUI. I only want to get the Ubuntu logo instead of the command lines. PS: when I turn off my computer, the same thing is repeated.

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