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• Formatted Ubuntu partition & now grub says "error: no such partition" - can't enter windows

  - by qwBJ

  I had installed Ubuntu (current version: 11.xx) alongside Windows Vista. Now I formatted the Ubuntu partition & merged it with another partition (without thinking, obviously). Now, when I restart the computer, GRUB probably tries to find the old partition (which does no longer exist) and says: error: no such partition. grub rescue> Now I dont know what to do (I'm a total beginner). I tried to re-install Ubuntu on the newly formatted partition but this won't work, because after removing the install-usb (which I am said to do during installation) I find the above error-message again. I guess I need some way to reconfigure grub OR to reinstall grub/ubuntu (on the newly formatted partition) OR to reinstall the windows boot manager (without reinstall. Windows), but I have no idea how to do either of these things.

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• LEGO Ornaments Bring Geeky DIY Charm to Your Holiday Decorating

  - by Jason Fitzpatrick

  Why settle for just a Death Star ornament when you can have a Death Star ornament you built yourself from LEGO? These DIY ornaments are a perfect geeky touch for your tree or gift for a LEGO loving friend. Courtesy of Chris McVeigh, we find nine DIY ornament guides that range from traditional (like teardrop ornaments and bulbs) to geeky (like Death Stars and Millennium Falcons). Hit up the link below to check out all the files and order the brick collections right through LEGO’s Pick a Brick service. LEGO Ornaments [via Geeks Are Sexy] HTG Explains: Why Screen Savers Are No Longer Necessary 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full

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• Automatically select headphones when plugged in

  - by Joachim Pileborg

  When I plug headphones into my desktop computer, they are not automatically selected for output, instead all sound still goes through my S/PDIF output to the stereo. The headphones alternative is added in the sound settings, and I have to manually select it as output device. $ cat /proc/asound/pcm 00-00: ALC898 Analog : ALC898 Analog : playback 1 : capture 1 00-01: ALC898 Digital : ALC898 Digital : playback 1 00-02: ALC898 Analog : ALC898 Analog : capture 2 I have done a Google search, as well as search askubuntu.com, but none of the answers in the hits I found seems to help. Also, after listening with the headphones and then unplug them, the previous output is not automatically selected, so I have no sound at all then. I have to manually select the correct output in the settings.

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• Why don't computers store decimal numbers as a second whole number?

  - by SomeKittens

  Computers have trouble storing fractional numbers where the denominator is something other than a solution to 2^x. This is because the first digit after the decimal is worth 1/2, the second 1/4 (or 1/(2^1) and 1/(2^2)) etc. Why deal with all sorts of rounding errors when the computer could have just stored the decimal part of the number as another whole number (which is therefore accurate?) The only thing I can think of is dealing with repeating decimals (in base 10), but there could have been an edge solution to that (like we currently have with infinity).

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• How can I send audio input as chunked HTTP?

  - by Noli

  I am trying to create an interface with an external server, and don't know where to start. I would need to take audio as input to my computer, and send it to the remote server as a chunked HTTP request. The api that i'm trying to connect to is described here p1-5 http://dragonmobile.nuancemobiledeveloper.com/public/Help/HttpInterface/HTTP_Services_for_NDEV_v1.2_Silver_Version.pdf I have never worked with audio programmatically, so don't know what would be the most straighforward way to go about this? Are there solutions that exist out there that already do this? I've come across references to Shoutcast, VLC, Icecast, FFMPeg, Darkice, but I don't know if those are appropriate for what I'm trying to accomplish or not. Would appreciate any guidance, Thanks

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• Better drivers for SiS 650/740 integrated video?

  - by Bart van Heukelom

  I installed Xubuntu 10.10 on an old box today and the graphical performance is horrid. According to lspci, the video card is this: 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 65x/M650/740 PCI/AGP VGA Display Adapter (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device 8081 Flags: 66MHz, medium devsel, IRQ 11 BIST result: 00 Memory at f0000000 (32-bit, prefetchable) [size=128M] Memory at e7800000 (32-bit, non-prefetchable) [size=128K] I/O ports at d800 [size=128] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel modules: sisfb Is there a way to make it faster? Alternative drivers? The additional drivers tool shows nothing. I'm specifically interested in improving Java's Java2D rendering speed, because I'll be running a "stat screen" written in that language on it.

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• How To Teach Independence

  - by Glenn Nelson

  In my IB Computer Science class I am routinely asked by... pretty much everyone how to do X or implement Y. I'm the only person with any significant programming experience in the class and I do not necessaries mind teaching people about programming but so many of the questions could be simply solved by doing a little investigating. What are some ways I could try to teach my fellow students how to be self-reliant programmers? All I can really think of is being a Google ninja & learning how to use an API.

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• Why is the hard drive still full after deleting some files?

  - by julio

  I have a server running Ubuntu Server 12.xx. Today some services stopped and I found some messages about full disk, so I ran df -h: Filesystem Size Used Disp Use% /dev/mapper/ubuntu-root 455G 434G 0 100% / udev 1,7G 4,0K 1,7G 1% /dev tmpfs 689M 4,2M 685M 1% /run none 5,0M 0 5,0M 0% /run/lock none 1,7G 0 1,7G 0% /run/shm /dev/sda1 228M 51M 166M 24% /boot overflow 1,0M 0 1,0M 0% /tmp I tried to delete some files remotely from a Windows computer by right-clicking and choosing "delete", but the hard drive remained full. Is there a Trash folder in Ubuntu Server? What could be happening?

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• Is there an algorithm for a pool game?

  - by Dmitri

  Hello! I am looking for algorithm to calculate direction and speed of balls in a pool game. I am sure there has to be some type of open source code for this since pool games are some of the oldest computer games I can remember. I mean, when one ball hits another, I need a algorithm to calculate direction of both of them. It will depend of exact angle of where they hit each other and on speed. I want to practice Java coding, so I am looking for java code or package that has this type of code.

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• Rosegarden don't work

  - by Brallan Aguilar

  I recently installed Rosegarden. When it had ran for the first time, it worked excellent. After, I had to restart my computer and when I ran it for the second time, something strange was occurred: according to the System Monitor, Rosegarden was running, in spite of I couldn't see the application, sometimes it's opened at other desktop and also Unity always has some instability problems like disappear the title bar of other programs or a zone is marked (for example, when we drag a window to the right side, we can see an "orange" area and the window's size is reduced to distribute at the middle of the desktop) at the left side of the screen and isn't hidden.

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• Address Is Approximate: A Brilliant Stop Motion and Street View Mashup [Video]

  - by Jason Fitzpatrick

  In this moving and brilliantly executed stop motion film, a small toy takes a voyage across the world without leaving the desk he lives on. Address is Approximate, a short stop motion film by Tom Jenkins, is a moving little film that combines Google Street View, stop motion, a collection of small desktop toys, and very clever use of office objects to great effect. [via GeekDad] How to See What Web Sites Your Computer is Secretly Connecting To HTG Explains: When Do You Need to Update Your Drivers? How to Make the Kindle Fire Silk Browser *Actually* Fast!

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• What is the *correct* term for a program that makes use of multiple hardware processor cores?

  - by Ryan Thompson

  I want to say that my program is capable of splitting some work across multiple CPU cores on a single system. What is the simple term for this? It's not multi-threaded, because that doesn't automatically imply that the threads run in parallel. It's not multi-process, because multiprocessing seems to be a property of a computer system, not a program. "capable of parallel operation" seems too wordy, and with all the confusion of terminology, I'm not even sure if it's accurate. So is there a simple term for this?

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• Installation on windows isn't going on

  - by Hese

  I downloaded the ubuntu on the USB. Then downloaded the windows installer. Restarted my computer. Till there was ok, but after a 40 minutes waiting the instalation isn't goind on. It has stoped on the 3/4. What to do? I removed the UsB to, after the instalation had stoped; It wasnt going on for 30 minutes. What to do now? Is it a disaster? UPDATE: I restarted my comp. Selecdet Ubuntu in the boot menu (not Windows). The reinstallation started but is "stops" in the same point. in about the 3/4.

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• Gumblar Attack

  Gumblar appears to be a combination of exploit scripts and malware. The scripts are embedded in .html, .js and .php files using obfuscated Javascript. They load malware content from Third Party sites without the user’s knowledge, while also stealing FTP credentials from the victim’s computer, which then allows it to spread and infect additional sites. Therefore, when someone visits such an infected site they get infected; if they have FTP credentials for a website on their machine then those sites get infected too. This explains the exponential growth of the exploit in such a short space of time.

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• LaTeX-like display programming environment

  - by Gage

  I used to be a hobbyist programmer, but now I'm also a fairly experienced physicist and find myself programming to solve certain problems quite a lot. In physics, we use variables with superscripts, subscripts, italics, underlines, etc etc. To bridge this gap to the computer we usually use LaTeX. Now, I generally use MATLAB for handling any data and such, and find it very irritating that I can't basically use LaTeX for variable names. Something as simple as sy has to be named either sigma_y or some descriptive name like peak_height_error. I don't necessarily want full on workable LaTeX in my code, but I do want to be able to use greek letters and super/sub-scripts at the very least. Does this exist?

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• Cannot Create a connection to Data Source VB 2010 [closed]

  - by CLO_471

  I seem to be having some issues with my Visual Basic 2010. I am trying to create a connection to a data source and it is just not working. Even my old connections in my other projects are not working. When I get into VB I try and create a connection by clicking Add New Data Source Database DataSet New Connection and when I click on New Connection the screen disappears and I am not able to select anything. Does anyone know of a glitch or something? I have checked my ODBC connections and all is good and I have been able to play around with my Access connections (which I am trying to connect) and Queries and everything seems to be working fine. I have rebooted several times, uninstalled and resinstalled VB and have also repaired the entire application. I am not sure what else to try or what else to do. Any help would be much appreciated. My computer specs are XP SP3, Core2 Duo at 2.80 and 3GB RAM

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• Learning Python is good?

  - by user15220

  Recently I have seen some videos from MIT on computer programming topics. I found it's really worth watching. Especially the concepts of algorithms and fundamental stuffs. The programs were written and explained in Python. I never had looked into this language before as I learned and doing stuffs with C/C++ programming. But the cleanliness and better readability of syntax attracted me. Of course as a C++ programmer for long time it's the most readable language for me. Also I heard Python library contains solid algorithms and data-structures implementations. Can you share your experience in this language?

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• How to add menu items in System menu

  - by Leonardo Montenegro

  I want to insert an item to System menu: Help and Support About Gnome About Ubuntu More specifically, I want to insert a new item under "About Ubuntu". Trying with alacarte doesn't work. Cloning "ubuntu-about.desktop" file and changing his attributes doesn't work too (I even rebooted the computer after that). Searching for categories in "/usr/share/desktop-directories" haven't worked too, and searching for "core" and "about" entries in /etc/xdc/menus neither. It isn't as easy as I thought it would be. Anyone have any suggestions?

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• I Installed Ubuntu 12.04 on a dell Inspiron 1501 along side windows vista using the windows installer but it wont boot into Ubuntu

  - by Nicholas

  I Installed Ubuntu 12.04 on a dell Inspiron 1501 with an AMD 64 along side windows vista using the windows installer but it wont boot into Ubuntu. It shows that Ubuntu is on the system when my computer boots up but when I select it to load it goes into a black screen and displays some error messages and tells me that the is no operating system installed. this is the error that i get: Try (hdo, 0):FAT16:no WUBILDR try (hdo, 1)NTFS: error: "Prefix" is not set. symbol not found:'grub_file_get_device_name' Aborted. Broadcom UNDI PXE-2.1 V2-1.0 copyright (c) 2000-2006 Broadcom corporation copyright (c) 1997-2000 Intel corporation All rights reserved PXE-EC8:PXE structure was not found in UNDI driver code segment. PXE-M0F Broadcom PXE Rom Operating system not found How can I fix this? I have tryed re-installing it but i get the same error.

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• Only recognizes one partition from multi partitions SD card

  - by Jay Ngo

  Hello everybody, I split my sd card into 2 partitions. When i use usb-card-reader to read my sd card, only the one partition shows up on the screen, the other doesn't. I have run the command "sudo fdisk -l" and the result is the same, only one partition is recognized. But i do believe both partitions of my sd card work fine, because i still can boot my single-board computer with that sd card and run some programms, which are inside that unreadable partition. How can i access both partitions of my sd card? Does anyone know how to solve this kind of problem? I really appreciate your help.

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• 3D engine for an online city/country simulation game (SimCity, Civilization)

  - by Dmitri

  I want to create a browser game, in which the user can control the development of a certain region (like SimCity or Civilization). One part of the task is rendering of the virtual world in a browser (3D or pseudo-3D). The rendering engine should a) work in a browser and b) ideally - be compatible with mobile devices (i. e. the representation of the virtual world should be visible both on desktop computer and mobile devices with the same codebase). Question: Which rendering engines (for SimCity-style games) fulfill aforementioned requirements (open and closed source) ?

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• Avoiding That Null Reference!

  - by TheJuice

  A coworker had this conversation with another of our developers. Names have been changed to protect the guilty. Clueless: hey! Clueless: I am using the ?? operator for null check below Nice Guy: hey Clueless: FundLoanRequestBoatCollateral boatCollateral = request.BoatCollateral ?? null; Nice Guy: that's not exactly how it works Clueless: I want to achive: FundLoanRequestBoatCollateral boatCollateral = request.BoatCollateral != null ? request.BoatCollateral : null; Clueless: isnt that equal to:  FundLoanRequestBoatCollateral boatCollateral = request.BoatCollateral ?? null; Nice Guy: that is functionally equivalent to FundLoanRequestBoatCollateral boatCollateral = request.BoatCollateral Nice Guy: you're checking if it's null and if so setting it to null Clueless: yeah Clueless: if its null I want to set it to null Nice Guy: if it's null then you're already going to set it to null, no special logic needed Clueless: I wanted to avoid a null reference if BoatCollateral is null   The sad part of all of this is that "Clueless" has been with our company for years and has a Master's in Computer Science.

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• bootable USB / installation requirements

  - by Chris Wilson

  Originally asked on One Hundred Paper Cuts Answers thread On the official site: http://www.ubuntu.com/netbook/get-ubuntu/download The instructions for creating a bootable USB key for installing Ubuntu Netbook Remix include a line saying: "Insert a USB stick with at least 2GB of free space" I recently installed UNR on a netbook -- in fact, the one I'm using right now -- and I went ahead despite only having a 1GB USB key on hand. Everything went smoothly and installed 100% correctly. If I had waited to go out and buy a 2GB USB key I would have spent that money unnecessarily and wouldn't have been able to use the computer in the meantime. I was wondering if there's a specific rationale for requiring a 2GB USB key, or if the instructions could be changed to indicate that it can be done with only 1GB. Thanks!

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• Friday Fun: The Rise of Atlantis

  - by Asian Angel

  The best day of the work week is finally here, so take a few minutes to have some fun while waiting to go home. In this week’s game you set off on a campaign across ancient Mediterranean regions to acquire multiple artifacts in a quest for success. Special Note: This flash version of the game allows you to play through three areas (Phoenicia, Babylon, and Egypt) of the overall campaign that is available in the full version. Even in its limited form it still provides a good amount of game play. How to See What Web Sites Your Computer is Secretly Connecting To HTG Explains: When Do You Need to Update Your Drivers? How to Make the Kindle Fire Silk Browser *Actually* Fast!

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• Can't boot Ubuntu 12.10 32 or 64 Bit, only Ubuntu 12.04 32 Bit [closed]

  - by Alexander

  Possible Duplicate: My computer boots to a black screen, what options do I have to fix it? i tried to install Ubuntu 12.04 64Bit, 12.10 32 and 64Bit, but it doesn't work. I'm used the Ubuntu 12.04 32Bit Start Disc Creator and also Unetboot on Win7, the installation-process are finished and i restart without the Stick. I can choose for example 12.10 and it starts writing "start ... [OK], ...", but then it hangs most on "Stop Kernel Messages [OK]". Then i can only shutdown normal the system and it writes stopping, shutdown and something like that. I am use an Aspire One D270 Netbook with Intel Atom N2600. It also doesn't work to try Ubuntu 12.10 from running on USB Stick. It starts, but then its black and the cursor blink on the left upside. Please can you help me? :(

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