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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 are hybrid VB6/.Net applications functioning in the Real World?

  - by Dabblernl

  I am maintaining a VB6 application and we are studying how to migrate to .Net We are considering doing this gradually by implementing new features in COM visible .Net classes and migrating existing functionality slowly. I found some instructive 'Hello World' examples about how to do this and it works fine with our App. But how is the real world behaviour of these hybrid applications? Are they stable, maintainable? Particular of our program is that more users on the same computer will use it by switching user accounts. EDIT: The VB6 app reads data from a USB connection and stores it in an Access database. The user can call up various views on the data. The data is cached in a hardware device, so interuptions in the reading of it are not fatal.

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• Failed Update & Mouse Issues

  - by James

  I`m using my gfs computer - but I do have Ubuntu 11.10 up and running well to some degree. Still need to work out some bugs but not quite sure how to do that. My mouse is only somewhat responsive - cursor moves, and able to click on things but still unable to do a double click function. Left mouse button still not working at all. Tried running updates but it keeps coming up synaptic error. Not sure what that means. I have read that some people have done reinstalls of Ubuntu and it corrected the problems - not sure if that could work. Comments would be appreciated. Installed Ubuntu 11.10 but thinking of trying to wipe the system to do a fresh install can someone tell me how I get back to the Ubuntu installation menu. Wondering if gnome may need to be reset but not sure.

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• HTG Explains: What is DNS?

  - by Chris Hoffman

  Did you know you could be connected to facebook.com – and see facebook.com in your web browser’s address bar – while not actually being connected to Facebook’s real website? To understand why, you’ll need to know a bit about DNS. DNS underpins the world wide web we use every day. It works transparently in the background, converting human-readable website names into computer-readable numerical IP addresses. Image Credit: Jemimus on Flickr How To Switch Webmail Providers Without Losing All Your Email How To Force Windows Applications to Use a Specific CPU HTG Explains: Is UPnP a Security Risk?

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• Which DB should I use for my newbie program?

  - by knijo

  I'm really new to programming, and I need some advice. I'm currently working on a very simple program to maintain a list of users at a company, as well as their clock in and clock out info. I would like to make this application easy to distribute (on a cd probably), and I'm looking for advice on which database to use for storing my data. My application is implemented using java and swing. A friend recommended MySQL, but I don't want to go installing the db server on every computer the application is installed on. Another friend recommended Access. Any tips would be greatly appreciated

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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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• How to run 2 X sessions with different display managers?

  - by ved2254

  I read about the virtual terminals a little and that gave me an idea. I searched for a way to have two X sessions simultaneously. I had a look at these sites : 1. How to run multiple user X sessions on the same computer, at the same time? 2. How to drag windows between 2 X servers? I tried startx -- :1 but my earlier terminal (on Ctrl+Alt+F7) hung up. How do I ensure this does not happen? My main need is to get Unity on :0 and Gnome-shell on :1 and switch between them like workspaces. As per 2., switching is not recommended as it is not easy. But if I get at least 1., then I'd be happy. I have Ubuntu 12.04 64bit.

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• PC noisy due to high load - why?

  - by Jinx

  I just installed an ubuntu on my pc(Dell Inspiration I560SR-358, with CPU E5700 3GHz, 4G memory, and NVIDIA GeForce G310). The pc becomes noisy before that it's quiet with a windows 7 on it. How come? How to set it to be quiet again in unbuntu 10.04. One of the two cpu usage is always 100%. I think that is the reason. //re-edit Everything gets ok after I restart the computer.But the fan is still running which makes it noisy, if i switch to windows 7, it becomes quiet again.

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• Rebooting yes, Shutdown no

  - by Chiotis Leonidas

  Hello everyone and thanks in advance. I am new in Ubuntu and have the 12.04 version dual boot with Windows XP. I have the following problem. The laptop can reboot using the reboot option from the menu but it cannot shut down. It starts shutting down, the dots appear but then it freezes and does not turn off. Sometimes it shuts down normally (usually just after an update) but then it loses that capability again. Some strange things, I noticed that when the dots freeze, the USB mouse loses power, BUT the usb-powered cooling pad continues to work The only Fn shortcuts that work all the time are the Volume up, down and mute, BUT sometimes when the other Fn combinations (screen-off etc) work the computer shuts down normally I searched a lot on my own, please help.

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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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• Is there any way to downgrade or revert an update to the kernel?

  - by David

  Today I installed the linux 3.9 Kernel update (because I heard it would fix sound through HDMI which I no longer have since installing 13.04). After restarted my computer and logging in my screen has only a desktop, and no dock or tool bar. I tried to reset unity and compiz using guides like this one but nothing happens, even after reboot. Is there any way to downgrade or reset the update? EDIT: Running uname -a in terminal brings up 3.8.0 as my current kernel for some reason.

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• Ubuntu will not load up from my USB

  - by Ryan Mungwira

  I have a Sony Vaio Duo 13 and I am trying to get Ubuntu 13.10 to run on a partition on my Ultrabook but it will not load up from the USB drive. It goes to the black screen that asks if you just want to Try Ubuntu or if you want to Install it. I click just to try and it will not load. It acts like it is going to start up but then it just goes to a blank black screen and then I have to a hard restart. It does that when I click install as well. And I have tried disabling the Secure Install on my computer as well and nothing happens! What do I do?!?

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• Jumping over non-stationary objects without problems ... 2-D platformer ... how could this be solved? [on hold]

  - by help bonafide pigeons

  You know this problem ... take Super Mario Bros. for example. When Mario/Luigi/etc. comes in proximity with a nearing pipe image an invisible boundary setter must prevent him from continuing forward movement. However, when you jump and move both x and y you are coordinately moving in two dimensions at an exact time. When nearing the pipe in mid-air as you are falling, i.e. implementation of gravity in the computer program "pulling" the image back down, and you do not want them to get "stuck" in both falling and moving. That problem is solved, but how about this one: The player controlling the ball object is attempting to jump and move rightwards over the non-stationary block that moves up and down. How could we measure its top and lower x+y components to determine the safest way for the ball to accurately either fall back down, or catch the ledge, or get pushed down under it, etc.?

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• Media Hint Brings Hulu, Netflix, and Pandora to non-U.S. Residents

  - by Jason Fitzpatrick

  Chrome: If you’re outside the United States you know all too well how irritating it can be when you’re denied access to streaming services because of your location. Stop missing out and start streaming with Chrome extension Media Hint. So what’s the secret sauce? The extensions routes your traffic–just the traffic for the streaming service–through U.S.-based proxies so you can enjoy content unavailable in your home country. The extension requires no configuration or registration, simply install it and visit Hulu, Netflix, or Pandora to start streaming. Media Hint is a free extension, Chrome only. Media Hint [via Digital Inspiration] 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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• Getting software development Jobs oversees [on hold]

  - by Mario Dennis

  I live in Jamaica and I am currently pursuing a Bsc. in Computer Information Science. I have worked on a few projects and have learn Struts 2, Play Framework, Spring, Mockito, JUnit, Backbone.js etc in my spear time. I have also learn about SOLID and DRY software development as well as architecting software system using Service Oriented Architecture and N-tier Architecture. What I want to know is given all of this can I get a job oversees before completing a degree, how difficult will it be, and what is the best way to go about doing it?

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• How do I add pcie_aspm=force to my boot options?

  - by nargo7

  I just upgraded to 11.10 from 11.04 on my laptop (I don't have Windows) by downloading from the Ubuntu website. The laptop battery is in bad condition, but I was using it with the 11.04 plugged to AC all the time, and everything was fine. After installing 11.10, the laptop seems to not notice that it is connected to AC, so it shuts down a few minutes after starting. I read that I have to type pcie_aspm=force in the boot command, so I tried accessing it by pressing the "F6" key while booting, and then the other F keys, but nothing happened. I also found that I can write that instruction in the terminal window, but I don't know in which file or location. I would appreciate some help, but I am not a computer engineer, so please write the instructions in plain English.

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• When to use C over C++, and C++ over C?

  - by Dark Templar

  I've been introduced to Computer Science for a little over a year now, and from my experience it seems that C and C++ are both considered one of the "ultrafast" languages out there, whereas others such as Python and such scripting languages are usually deemed somewhat slower. But I've also seen many cases where a software project or even a small one would interleave files where a certain number n of those files would be written in C, and a certain number m of those files would be written in C++. (I also noticed that C++ files almost always have corresponding headers, while C files not so much). But my main point of inquiry is to get a general sense of intuition on when it is appropriate to use C over C++, and when it is better to use C++ over C. Other than the facts that (1) C++ is object-oriented whereas C is not, and (2) the syntaxes are very similar, and C++ was intentionally created to resemble C in many ways, I am not sure what their differences are. It seems to me that they are (almost) perfectly interchangeable in many domains. So it would be appreciated if someone could clear up the situation! Thanks

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• ubuntu 14.04LTS flickering

  - by user292609

  when I start the computer, makes a big high pitch sound and the only thing I can see on the screen is "[[23" written everywhere . I have to start it always through the recovery mode. Ubuntu desktop screen does not flick, but every window that can maximmize and minimize does it like crazy. Like firefox browser, terminal, vlc.. I have a Lap top Acer Aspire One with AMD/ATI graphic card. I read many forums about flickering screen and I try many things , but I still have the problem. I am very new in Ubuntu. Please help

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• Administrator user session only shows a terminal

  - by Saariko

  Weird problem: After upgrading to 11.10 (and I am sure that I worked with it for couple of days). We had a power failure, and now, when open the computer, what I get is a screen, with a scrollable list of users (administrator is one of them). When I select the administrator user, and login, I get on the top left a terminal window. That's it ! I don't see my regular ubuntu desktop. What's wrong? I have tried some of the issues mentioned here: Delete the .Xauthority sudo apt-get update *I had some DNS errors, so had to fic my /etc/resolv.config (works now) please advise.

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• What is the history of why bytes are eight bits?

  - by DarenW

  What where the historical forces at work, the tradeoffs to make, in deciding to use groups of eight bits as the fundamental unit ? There were machines, once upon a time, using other word sizes, but today for non-eight-bitness you must look to museum pieces, specialized chips for embedded applications, and DSPs. How did the byte evolve out of the chaos and creativity of the early days of computer design? I can imagine that fewer bits would be ineffective for handling enough data to make computing feasible, while too many would have lead to expensive hardware. Were other influences in play? Why did these forces balance out to eight bits? (BTW, if I could time travel, I'd go back to when the "byte" was declared to be 8 bits, and convince everyone to make it 12 bits, bribing them with some early 21st Century trinkets.)

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• Caption Competition 4: Fist Full of Captions

  - by Simple-Talk Editorial Team

  Once again we ask: What’s going on here? The best caption wins a $50 Amazon voucher. Computer-y answers for preference, but don’t let a lack of electronics stop you from dazzling us with your bon mots. Some examples to set you on your merry way: “You know what it’s like. Someone turns up to an interview in a long coat, they seem fine, but when they start the job it turns out it was a bunch of penguins.” “When I said we needed cold callers, this wasn’t really what I meant.” “Linux developers seek inspiration for new Logo” “Residents of Antarctica hold press conference to protest about Global Warming.”  You can do better. Make us laugh, win fabulous prizes. Answers in the comments, please.

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• Ubuntu One isn't syncing in Windows 7

  - by tuxtu

  Ubuntu One was working just fine in friend's computer on Windows 7. Problem is that, suddenly it has stopped syncing. I want to share some observation regarding this problem. Hope this could be helpful to solve the problem. If I upload any file directly on web (using browser), the amount of file size (KB/GB) changed in both places, Web dashboard and Ubuntu One control panel on Windows 7, but I can't find the file on PC. "File sync in progress" hangs on the U1 control panel on windows for indefinite time. If I keep any file in the U1 synced folder, that's not available on the PC and the total amount of file size isn't changed anywhere. "File sync in progress" dialogue is always there, since the starting of the PC. User using the PC with administrative previlage. Hope this problem will be solved quickly.

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• Upgrade to 13.04 was not successful. Gstreamer not working. What do?

  - by user172214

  I finally decided to upgrade to 13.04. In the middle of the installation my computer froze completely, and so I decided to force quit. I log back on, and notice that the login says 13.04, but not everything was updated. So I run the software updater. Some of the stuff gets updated, but not everything, I suppose. I try to run Rhythmbox, but it says that it's not able to form playback, and that the Gstreamer was messed up, and to please check installation. I don't know what other bugs maybe running. That's just the first I've encountered. The software updater won't let me update anymore because it says the updates need authentication.

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• BURG broken by Windows

  - by Sallée

  I have successfully installed, using Super Boot Manager, BURG in a computer at my work. After I boot into Windows XP, BURG is no longer operational. The machine just boots to the BIOS screen, goes black, and then boots to the BIOS screen again ad infinitum. The only way to recover I have found so far is to use a Boot-Repair USB, which restores either GRUB2 or MBR, not BURG. Everything works fine under GRUB2, but I prefer the improved look of BURG to make things easier on my students.

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• Help with Dial Up

  - by iSeth

  I am trying to set up a computer for my friend that has dial up. The problem is nothing I try can detect the modem. GnomePPP can't find it and I can't figure Kppp out. I've been looking all over the net on my ethernet trying to find an answer but I keep getting routed back here. I have also tried using scanModem and it finds something like Conexant Systems, Inc. HCF 56k Data/Fax/Voice Modem but the rest of it is really confusing. I've also tried this but I'm not very terminal savvy and it didn't work. It seems like I have to compile a driver but I don't know which one or how to do it. I have also tried multiple modems. Any help would be appreciated. Thanks EDIT: scanModem thinks the modem is disabled on startup. EDIT: I reinstalled Ubuntu but the problem persists.

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