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• Front End Application Development

  - by gprime

  I want to start a side project at the company i work for. Right now we are a 100% web based company. I have an idea for a fun project that would install an application on your computer. Anyways, i am not here to discuss the product. I am here to ask about the front end application development. I am a good C++ programmer but only algorithms (I have over 10 years in web development). I have never made a UI application before (minus the old school VB days). I would like to know my options for the front end application for windows, osx and linux. What are the popular choices these days for the UI of applications in windows, osx and linux?

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• How do I temporarily reference a new web host using my existing domain name?

  - by Alex Angas

  On provider A I have an existing web hosting account running my site. On provider B I have my domain name registered pointing to the web hosting on provider A. I've just purchased a web hosting account with provider B and want to move my site there. Is there a way to temporarily use my domain name to point to provider B while I set up the site (e.g. just from my computer)? I tried to change the HOSTS file (Windows) and while pings resolved to what I set, HTTP requests don't.

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• Mouse cursor lag after lock screen, 64 bit 12.04

  - by Bill Jones

  Recently I have noticed that when I return to my computer after it has been "locked" for a while, the mouse pointer has significant lag. The cursor position appears to only update a few times a second. Moving the mouse results in the pointer "following" the movement in a jerky kind of way, and then continuing for some fraction of a second after I have stopped using the mouse. Replacing the mouse has no effect. (I have two differently branded and constructed usb optical mice). Plugging either mouse into a different usb port has no effect. Once the problem was resolved by "suspending" the system, and then re-starting it with the power switch, but this does not work every time. So far, the only fool-proof fix is to shut the system down and re-start it (re-boot). I have tried this suggested fix. It had no effect.

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• LibreOffice prints everything half size

  - by oldmankit

  Ever since I printed a document from Evince in landscape orientation, LibreOffice Calc / Writer refuses to print anything correctly. It is scaling everything by 0.5x and rotating it. To get the same effect, go to print - page layout tab - pages per sheet = 2. However, I don't want 2. I want 1. I have wizzed through all of the printing options a few times but can't get to the bottom of this. I've restarted my printer and computer several times. I have done sudo apt-get purge libreoffice* and reinstalled again. Still it will not print full size. (Of course I have checked that the page settings are set to A4 and portrait.) Update: this problem is specific to one printer only, to printing from within LibreOffice (Calc, Writer). With other printers / programs I have no problems.

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• After deploying services I get incorrect public adress

  - by user84471

  I deployed wordpress and when I type juju status I recievie this: public-adress: node-001185e6777fe When I found what is IP adress of this computer I tried type in webbrowser but I get 502 bad gateway. After juju status: hsf@ubuntu:~$ juju status 2012-10-05 11:26:49,385 INFO Connecting to environment... Enter passphrase for key '/home/hsf/.ssh/id_rsa': 2012-10-05 11:26:51,905 INFO Connected to environment. machines: 0: agent-state: running dns-name: node-00127968a7be.local instance-id: /MAAS/api/1.0/nodes/node-ab7c5eb6-0e08-11e2-bb37-001185e67955/ instance-state: unknown 1: agent-state: running dns-name: node-001185e677fe instance-id: /MAAS/api/1.0/nodes/node-82beae92-0e09-11e2-a134-001185e67955/ instance-state: unknown 2: agent-state: running dns-name: node-001185e6772b.local instance-id: /MAAS/api/1.0/nodes/node-5c21dc18-0e0a-11e2-a134-001185e67955/ instance-state: unknown services: wordpress: charm: cs:precise/wordpress-9 exposed: true relations: loadbalancer: - wordpress units: wordpress/2: agent-state: started machine: 1 open-ports: [] public-address: node-001185e677fe.localdomain 2012-10-05 11:26:52,459 INFO 'status' command finished successfully hsf@ubuntu:~$

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• Can I use GNOME applets in Unity?

  - by Moma Antero

  Applets are small programs that you attach and start from the GNOME's toolbar. See picture: http://www.futuredesktop.com/audio-recorder/recorder-applet.ogv My favourite applets are: rec-applet: Smart audio recorder applet. You can get this from Launchpad. clipart-finder: Find and download clipart to your computer. You can get this from the Launchpad. 1) Can I use these applets in UNITY as is? 2) What changes I have to make to applets' code (rec-applet and clipart-finder) to make them usable in Unity? 3) Where is the applet-specification for Unity?

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• How to add a command permanently to grub2

  - by tomodachi

  I have a fairly special setup, using Linux on a MacBook Laptop. to switch off my secondary graphics card in it I'm required to add these lines to my grub outb 0x728 1 outb 0x710 2 outb 0x740 2 outb 0x750 0 I do this by pressing 'e' for my selected grub menu option and adding the lines one by one . then finally booting . But as we know it's not permanent. I cant really figure out where i need to add it for grub to always append it to my Linux boot options. It's doesn't seem to belong in /etc/default/grub since here i can add stuff to the kernel boot line Honestly i'm afraid to fiddle to much with grub on my computer since getting it to triple boot Linux/Mac/Windows was a very delicate and timely matter. Does anyone have any idea of where to add it?

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• How to attend one off lectures? [closed]

  - by Senthil Kumaran

  Many times, we come across one-off lectures from famous Computer Scientists. Last year, I came across one by Ms. Barbara Liskov, but I could not go because the University Hall was bit far. Tomorrow, there is one by Dr. Knuth! Now the problem I am facing is, "I don't know much about the material he is going to talk", so I am not sure if I should plan and I fear it will be like going for a "temple". :) What is your advise and general strategy that you have followed whenever you wanted to attend a talk or lecture wherein, it may have been worthwhile if it were an introductory tutorial, but instead you were sitting in an advanced 1 hour lecture by a famous scientist.

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• Maya is lagging in a specific way...?

  - by Aerovistae

  My Maya installation worked perfectly. It is not my computer. Something caused it to stop working overnight, somehow. When I try to drag a vertex or something like that, it moves the vertex, but then I have to click like 3 times somewhere outside the mesh before the actual mesh will catch up and follow the vertex. Until I do that, it just stays as it was, with a floating vertex somewhere inside it or outside it. It makes modeling borderline impossible and completely infuriating. What ought to be happening is what we're all used to-- as I move the vertex, the mesh follows it actively, so I can see what it looks like at every given moment until I release the vertex in its new position. Other weird thing: this only applies to complex meshes, like a couple thousand faces. A simple cube works fine. What gives?? Anybody?

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• Questionable ethics regarding closed source softwares which are supposed to be open source.

  - by edem

  Several days ago I heard a sentence "Cracking company name routers are not a crime.". I asked "Why?" and the guy explained to me that company name used a linux distribution on their routers which source can not be closed because of their license but company name closed it. What do you think about this? Doing otherwise unethical "cracking" becomes ethical, or somewhat neutral if the software in question is "cracked" too? By "cracking" I don't mean breaking into a computer through someones' company name router but "cracking" my own router's OS which otherwise would be unethical.

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• How do I set up a headless server via VNC?

  - by Joe

  I'm trying to configure my system to run headless and access the desktop via VNC when necessary. It seems everytime I unplug the monitor while ubuntu is running, the system freezes and I am forced to do a hard shut down. If I start the computer up without a monitor it won't boot up all the way and I am still unable to access the desktop through VNC. I am able to VNC to it while there is a monitor attached to it. Automatic login is enabled. I want to VNC into my ubuntu machine without a monitor.

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• Why can't I get into my repositories?

  - by ken1943

  Upgraded from 10.04 to 10.10 by mistake and am having problems with some of my programs. They either don't work or they disappear from view on the screen. The Repositories menu item in Synaptic Packages Manager is a case in point. The computer does nothing when I choose this item. I am locked out of unless I edit /etc/apt/sources.list. The rest of the application seems to work, however. Update Manager just flashes on screen then disappears without doing, as does Printing. How do I downgrade from a higher to a lower level repository? I need to downgrade from 10.10 to 10.04. Each time Ubuntu upgrades to 10.10 evil things happen and the operating system really gets messed up. I really do not want to have to erase and install my operating system all over again if I can help it.

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• How do I install drivers for an AMD Radeon HD 6450?

  - by vanysha

  Hi everyone! I bought new computer. The Graphics card is AMD Radeon HD 6450, on Windows 7 it works fine but I try to install driver on Ubuntu, and it says that "No supported adapters detected". I downloaded the driver from here. After installing "Aditional drivers" says that driver is installed. Also my screen resolution in Ubuntu is not maximum. Can you help me install proper driver, please? Thanks in advance!

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• EPM 11.1.2 - Receive Anonymous Level Security token message in IE8 when trying to access Shared Services or Workspace URL

  - by Ahmed A

  If you get "Receive Anonymous Level Security token" message in IE8 when trying to access Shared Services or Workspace URL.Workaround:a. Go to Start > Run and enter dcomcnfgb. Expand Component Services, Expand Computers and right click on My Computer and select Propertiesc. Click on the Default Properties tab.  Change the Default Authentication Level to Connect.  Click apply and then OK.d. Launch the IE browser again and you will be able to access the URL.

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• How should I access frame buttons from a controller in an MVC approach?

  - by Loris

  I'm developing an italian card game using the mvc pattern. I have the class GameFrame that contains the view. The user's card are buttons (JButton objects). I have 3 controllers: GameController: to control the game in general. Contains the game loop. HumanPlayerController: to control the user input ComputerPlayerController: contains the AI of the computer PlayerController: is an interface with the makeTurn() method. It's implemented by HumanP.C. and ComputerP.C. HumanPlayerController implements ActionListener too. But what is the right way to access to the GameFrame buttons? I need it for understand which card was chosen. GameFrame and HumanPlayerController are in different packages. Should i make the JButtons public?

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• 12.10 starts up to just my desktop background [closed]

  - by Alex

  Possible Duplicate: Unity does not start after installing the fglrx drivers on 12.10 I have only just started using linux more than just instlling it on an old pc for fun and have just changed the driver settings from the default option. The computer starts up and goes through everything else well, but at slightly lower resolution. Once signing on to Ubuntu, it only displays my desktop background and cursor. Can i restore it to the default driver settings? I've spent a while transferring files and don't want to reinstall Ubuntu.

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• Unity Not loading after installing Nvidia proprietary drivers

  - by user108705

  I just got a new Nvidia GTX 650. The huge downside at this point is that whenever I use the open source driver, the computer is ridiculously slow. Whenever I use the proprietary drivers and restart, the desktop wallpaper will load and nothing more. I've tried restarting unity only to get a continuous rolling error. With the CCSM options, unity is enabled, yet nothing appears. Whenever I'm using proprietary drivers I get a microcode error which happens so quickly that I can't record the number.

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• Show Ubuntu logo in Byobu (tmux) status bar?

  - by RSoul

  For some reason my Byobu (tmux) status bar is showing TAB instead of the ubuntu logo. This: where it should be this: I've tried installing some different fonts, but have not corrected the issue yet. Any ideas? Further information: sudo apt-get install ttf-ubuntu-font-family Reading package lists... Done Building dependency tree Reading state information... Done ttf-ubuntu-font-family is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Update: fc-list on my computer shows all the fonts with the prefix /usr/share/fonts/ e.g., /usr/share/fonts/truetype/ubuntu-font-family/UbuntuMono-R.ttf: Ubuntu Mono:style=Regular But the same command on a working system shows fonts listed thus: Ubuntu Mono:style=Bold Italic Perhaps it's a font location problem?

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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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• What steps should be taken to make sure your software is usable by disabled people?

  - by Cromulent

  I want to make sure a piece of software I am writing is usable by people with various disabilities such as blindness and an inability to use a mouse and / or keyboard. Unfortunately I have no experience with things such as screen readers or other methods that disabled people use to make using a computer easier / possible. I've never really had much experience with disabilities at all and unfortunately I don't know any disabled people who I can ask. I was wondering what other people do to make sure that their software is available to a wide range of people with varying abilities? This seems to be a subject matter that is often ignored by developers and I think it is a real shame.

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• My SSD stopped working as it ends up in blue death right after windows 7 launches, how can I reset it for new windows install?

  - by HattoriHanzo

  As I mentioned in the title my SSD suddenly started to fail as after launching Windows 7 it goes straight to completely idle and after a few minutes it goes to blue death and restarts. I have an another HD with a windows xp on it and it works fine and I can also see the SSD and can access everything on it. Windows 7 on the SSD does work in safe mode though yet I didn't manage to find out what causes the problem. Since I can sill access the files and save them to another HD I'm looking for the best way to wipe and reinstall Windows 7. I have yet failed to find an easy to follow (or even understand) guide, different sources on the internet recommend different ways of doing this. And some guides are just simply full of terms I have no clue about. It's an OCZ Vertex 2 120GB. I"d very much appreciate if someone could give me an advice on what I should do, preferably in a way so I could regain the best possible performance as well. it doesn't matter if I don't understand the science behind it as long as I can follow the steps. Thanks!

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• Crash on shutdown when using second monitor

  - by plua

  I have recently added a second monitor to my setup. Instead of one VGA monitor, I now have one VGA and one DVI monitor hooked up to the computer. The displays work just fine. However, ever since this monitor was added Ubuntu (10.10) does not shut down properly. I go to shutdown and it starts shutting down but just hangs and I need to manually shut it down. This has been like this for weeks and I feel not comfortable shutting it down this way over and over again. Has anybody any idea what this can be? Or, also useful, does anybody know how to get some info on why this crash occurs? Any logs that can be used for this? Thanks! Paul

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• Google60 Emulates Search Engine Querying with 1960s Technology

  - by Jason Fitzpatrick

  Google60 is a novel little project that mimics the interface of a 1960s-era computer and mashes it up with modern Google search queries. Take it for a spin; you’ll never appreciate the speed of even the slowest modern browser more. While playing with the actual project is enjoyable, make sure to check out the project notes below the interface for an interesting look at design choices and emulating an old machine. Google60 [via Unpluggd] Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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• Shader Model 3.0 not available

  - by Romy

  I have Acer 4745G with ATI HD 5650 1GB VRAM. After I installed the COD Black Ops trough Wine Playonlinux and successfully installed, and I play the game and then appear message "Shader Model 3.0 not available". I have installed ATI driver 11.8 when I trying this game. And then I'm trying to install the driver from menu "System Administration Additional Driver, it doesn't work. I cannot log in, in the screen appear only the text for log in. And then I uninstall it trough recovery mode. And then I download ATI driver 11.11 from official ATI/AMD website, and then I restart my computer and my screen appearing only text again. I'm using Ubuntu (Ultimate Edition) 11.04. How to overcome this problem?

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• How to find manually installed packages?

  - by queueoverflow

  I installed a plain Ubuntu 10.10 on my computer and installed some software via apt-get. Last week I managed to break everything and just started from scratch, and I need to reinstall my software. Is there some way to create a list with all the packages that I have installed manually? So that it would give me a list like „texlive, ...“ and not „texlive, texlive-dep1, textlive-dep2, ...“ and all the standard packages removed? If I could somehow figure out which programs out of the regular install I have removed, that would be awesome too!

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