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• Gnome 3 - Multiple Video Cards - Xinerama -- Forced Fallback Mode

  - by Alvin

  Just installed a 2nd nvidia video card -- previously had gnome 3 working perfectly with 2 monitors on a a single video card using twinview tried a number of things thus far twinview on 1 card + xinerama no xinerama no twinview various manual xorg.conf hacks based on random forums (couple references below) xinerama no twinview with and without Extensions Composite The last one is what I'm using now -- it results in a forced fallback mode with Composite Disable set at the end of xorg.conf via nvidia-settings Section "Extensions" Option "Composite" "Disable" EndSection when I disabled that last snippet it boots to gnome 3 full with the left monitor on a black screen and the middle monitor as primary but non-responsive switching to console mode Ctrl+Alt+F1 and then switching back I get 3 black screens with a mouse that can move around but nothing to interact with issue seems related to OpenGL and the multiple video cards -- I can boot into Unity without issue though my Glx-Dock shows up with the black background as barely shows in the screenshot below indicating the OpenGL is not initiated has anyone had any luck with getting Xinerama to work with Multiple NVidia Video Cards with OpenGL support? Found this in the logs while looking a bit further [ 23.208] (II) NVIDIA(1): Setting mode "nvidia-auto-select+0+0" [ 23.254] (WW) NVIDIA(1): The GPU driving screen 1 is incompatible with the rest of the [ 23.254] (WW) NVIDIA(1): GPUs composing the desktop. OpenGL rendering will be [ 23.254] (WW) NVIDIA(1): disabled on screen 1. [ 23.277] (==) NVIDIA(1): Disabling shared memory pixmaps [ 23.277] (==) NVIDIA(1): Backing store disabled [ 23.277] (==) NVIDIA(1): Silken mouse enabled [ 23.277] (==) NVIDIA(1): DPMS enabled According to this page at the NVidia User Docs http://us.download.nvidia.com/XFree86/Linux-x86/173.14.09/README/chapter-14.html I may be out of luck =( Starting this question with the hopes that others may be able to help debug and perhaps gain answers over time as I really want to get the full gnome 3 back.

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• OT: Fixing choppy video playback on OS X

  - by terrencebarr

  This is a bit off-topic but I wanted to share because it seems a lot of people are running into issues with choppy video playback and stutter on Mac OS X. I am using a Mac Mini with Snow Leopard (10.6.8) as a home media center and it has worked great in the past, playing back music and videos from multiple sources (web, quicktime, VLC, EyeTV). A few weeks ago the video playback from all my sources started to become choppy, to stutter, and often the picture would hang for seconds at a time. Totally unusable. Drove me nuts for two weeks. After much research and trial-and-error it turns out the problem was an outdated Flash Player which seems to have messed up the video pipeline for the entire system. The short is, I updated the Flash Player to version 11 directly from the Adobe web site, rebooted the Mac Mini, and all is well again! Judging from the various posts across the web, video playback appears to be a fairly widespread problem for Mac users and I hope this helps some of you out there! And I can’t wait to get rid of Flash altogether – I can’t remember the times it has crashed my browser, hung my system, and screwed up things. Thanks Adobe ;-( Cheers, – Terrence Filed under: Uncategorized Tagged: Adobe Flash, Mac OS X

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• Shooting Print Quality Pictures with a Camera Phone [Video]

  - by Jason Fitzpatrick

  Camera phones get a lot of grief for being underpowered but in this video tutorial the crew at SLR Lounge shows how basic technique and a good eye overcome all. Last year over at the photo blog FStoppers they put together a video showing off how you could use the iPhone as a fashion camera–essentially arguing that the camera wasn’t as important as the photographer. A lot of people said “Well yeah, but you had professional models and thousands of dollars in lighting equipment!” in reaction to the video. In turn the crew at SLR Lounge decided to make their own video showing that using only an iPhone camera and two reflectors (as well as an attractive but informal model). It of course helps to have some side kicks to help hold up your reflectors but the point still stands about modern camera phones being perfectly capable of good photos. The SLR Lounge iPhone Photo Shoot – A Follow Up Tribute to The FStoppers [YouTube] What is a Histogram, and How Can I Use it to Improve My Photos?How To Easily Access Your Home Network From Anywhere With DDNSHow To Recover After Your Email Password Is Compromised

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• Sound not working after installing PCI video card and then removing it

  - by bakhshu

  I am running 11.10 on a HP/Compaq Presario sr1010z, and the video/audio was working fine with whatever was in the machine already. Then I installed a new video card (PCI/nVidia), which disabled the audio/video on the old one automatically. But that card didn't work out too well so I removed it. Now the video is back to normal, but the audio is gone. I have tried the following: 1. In BIOS, set audio to on/enable rather than Auto 2. Looked for hardware in System Settings Sound, but nothing shows up there 3. But when I run the sysinfo utility, I get the description of the audio controller When I do a 'sudo aplay -l', I get 'aplay: device_list:240: no soundcards found...' And then when I do a 'lspci -v | grep -A7 -i "audio"' I get the following: 00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] SiS7012 AC'97 Sound Controller (rev a0) Subsystem: Hewlett-Packard Company Device 2a05 Flags: bus master, medium devsel, latency 32, IRQ 5 I/O ports at a000 [size=256] I/O ports at a400 [size=128] Capabilities: 00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f) (prog-if 10 [OHCI]) Any ideas on how to fix this? Thanks

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• Projet Tango : après les smartphones capables de capturer des images en 3D, Google plancherait cette fois-ci sur les tablettes

  Projet Tango : après les smartphones capables de capturer des images en 3D, Google plancherait cette fois-ci sur les tablettes Après avoir dévoilé son projet Tango, qui prévoit des smartphones disposant de capteurs 3D capables de récréer l'environnement dans lequel l'utilisateur se trouve en 3D sur l'écran, Google devrait produire un nombre restreint de tablettes dotées d'un écran de 7 pouces elles aussi capables de capturer des images en 3D. Les tablettes seraient équipées de deux caméras orientées...

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• LEGO Lord of the Rings Cut Scenes Spliced into a Full Length Movie [Video]

  - by Jason Fitzpatrick

  If you take all the cut scenes from the LEGO Lord of the Rings video game and splice them end-to-end, the result is an hour and a half LEGO Lord of the Rings movie. Check out the full video here. Courtesy of SpaceTopGames, this mega splice includes every cut scene from the video game, weighs in at one hour and thirty one minutes, and actually works really well as a movie when strung all together. LEGO Lord of the Rings – All Cutscenes [via Freeware Genius] HTG Explains: Does Your Android Phone Need an Antivirus? How To Use USB Drives With the Nexus 7 and Other Android Devices Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder?

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• Introduction to Reading Electronics Schematics [Video]

  - by Jason Fitzpatrick

  If you’re interested in electronics tinkering but a bit overwhelmed by learning electronics schematics, this helpful introductory video will get you started. Courtesy of Make magazine, this video tutorial covers what a schematic is, how schematics are laid out, and the basics of reading a schematic and its component symbols. When you’re done with the video you’ll have a better grasp of electronics circuit schematics than most of the population and, hopefully, and increased comfort reading schematics for all those DIY projects we post here. Collin’s Lab: Schematics [Make via Hacked Gadgets] HTG Explains: When Do You Need to Update Your Drivers? How to Make the Kindle Fire Silk Browser *Actually* Fast! Amazon’s New Kindle Fire Tablet: the How-To Geek Review

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• Video: Telerik Silverlight Chart showing live data from SharePoint 2010

  - by Sahil Malik

  Ad:: SharePoint 2007 Training in .NET 3.5 technologies (more information). In this video, I demonstrate  - The process of writing, authoring, deploying, configuring, and debugging a Custom WCF service in SharePoint 2010 Integrating it with the Telerik Silverlight RAD Chart, that shows live data from the server showing CPU Usage of your web front end – can be enhanced to show whatever else you want. Doing all this in Visual Studio 2010, how you’d put your project together, how do you go about diagnosing it, debugging it – the whole bit. The whole presentation is about 45 mins, and it’s mostly all code, so plenty of juicy stuff here! At the end of this, you have a pretty sexy app running .. just fast forward to the end of the video below, and you’ll see what I’m talking about. :) You can watch the video here Comment on the article ....

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• offline installation of video plugins

  - by israel

  Please help I installed Ubuntu11.10 32bit in an IBMTP41 notebook, that is NOT connected to the internet, tried running video files such as .mp4,.flv,.avi,.Xvid, in Movie Player but it asks for plugins, see the list below mp4: MPEG-4 AAC decoder; H.264 decoder flv: SorensonSpark Video decoder; MPEG-1 Layer3(MP3) decoder avi: MPEG-1 Layer3 (MP3) decoder; MPEG video decoder XviD: AC-3 (ATSC A/52) decoder; XviD MPEG-4 decoder how do i donwload (from another computer with internet) and install all these plugins and their dependencies. I also want to install the VLC Media player and its dependencies I assume this is related to the restricted codecs and I have tried donwnload/install them with no success. I'll appreciate all ur help

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• Free Universal Construction Kit Links Different Construction Toy Systems

  - by Jason Fitzpatrick

  If you or a young tinker in your household is disappointed that there is no way to link LEGO bricks and Lincoln Logs (or other construction toys on the market) this project is for you. Free Universal Construction Kit is project oriented around creating inter-operable linking bricks that allow the user to link previously non-compatible building system. Using the bricks you can, for example, attach LEGO bricks to a K’Nex construction. The adapter bricks are all available as free 3D printer models–download them, fire up your 3D printer, and start mish-mashing your construction sets. Free Universal Construction Kits [via Make] The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos

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• Totem streams only certain video from iphone

  - by Hans Schmidt

  I recently installed a plug-in for Totem movie player. This allows the app to receive and play AirPlay-streamed video from iphone to totem player: http://www.omgubuntu.co.uk/2011/01/airplay-video-playback-comes-to-totem Actually this works fine with youtube videos. But when it comes to other apps in iPhone (such as Digital TV App) the streaming does not work. In the app I can choose Totem Player, but Totem Player itself stays empty, i.e. nothing will be streamed. As mentioned choosing Totem Player for youtube video works fine. Do you guys have any idea what makes the difference that it works only for youtube?

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• FigurePrint Brings Your Minecraft Creations to Life

  - by Jason Fitzpatrick

  If you love Minecraft so much you wish your finest creations could sit on your desk, FigurePrint is happy to oblige with a little 3D printing magic. Using their helper app you can export a section of your Minecraft world, big or small, upload it to their servers, and receive a full-color 3D printed model of it in the mail. The pricing is based on the size and complexity of model. Hit up the link to read more about their Minecraft printing services (as well as their Xbox Live avatar printing and World of War Craft printing). FigurePrint: Minecraft [via Wired] 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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• La vidéo de la semaine de Kat : Opéra répond à Google dans un spot publicitaire décalé

  La vidéo de la semaine de Kat : Opéra répond à Google de manière décalée Récemment Google a lancé la diffusion d'une campagne publicitaire en format vidéo pour vanter les performances et la rapidité de son navigateur Chrome. Opera répond de manière humoristique en publiant son propre spot vidéo, un poil satyrique de celui de Mountain View, dans lequel un test de vitesse est réalisé entre son browser et... une patate. A voir ici : http://youtube.com/watch?v=zaT7thTxyq8 Et, pour ceux qui ne l'avaient pas encore vue, voici "l'originale" diffusée par Google : http:...

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• ubuntu 10.10: Totem streams only certain video from iphone

  - by Hans Schmidt

  I recently installed a plug-in for Totem movie player. This allows the app to receive and play AirPlay-streamed video from iphone to totem player: http://www.omgubuntu.co.uk/2011/01/airplay-video-playback-comes-to-totem Actually this works fine with youtube videos. But when it comes to other apps in iPhone (such as Digital TV App) the streaming does not work. In the app I can choose Totem Player, but Totem Player itself stays empty, i.e. nothing will be streamed. As mentioned choosing Totem Player for youtube video works fine. Do you guys have any idea what makes the difference that it works only for youtube?

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• ASP.NET Data-Aware Reporting: Getting Started Video

  Check out this very useful XtraReports getting started video that shows you how to create your first data-aware web report: Even if youre an XtraReports pro-user now, I recommend watching the video. Why? As promised, this is one of the first re-recorded videos that uses Visual Studio 2010 as well as DXperience v2010.1 release. Not only that, the screencast reflects some of the newer elements and features of XtraReports starting with the DXperience v2010.1 release. Check out the video and then...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Where can I find Cinema4D for game development tutorials ?

  - by George Profenza

  Hi, I started to learn Cinema 4D. I've noticed it's really easy to use for motion graphics, but I want to use it for modeling for games/realtime 3d engines. Before I used 3dsmax and it was easy to estimate how a model would look/behave in a 3d engine. The two main things I did was displaying Polygon triangles and displaying the Polygon Count. I've found the Total Polygons tick in HUD settings in Cinema 4D, but I can't find any display mode that will show triangles. Is there there a way to display triangle faces/not quads in Cinema4D ? If so how ? There is a Triangulate function, but I'd rather not Triangulate/Untriangulate all the time, especially since it's converting back and forth between the two doesn't always produce the same result. I imagine I'm asking for old school techniques, but I plan to use these to make low poly models for web(canvas/webGL) and mobile.

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• Textures of .x model deformed in XNA

  - by marc wellman

  I want to have a 3D model with textures built in SketchUp 8 be imported as a .x model in XNA. So far I have used several .x exporters like http://edecadoudal.googlepages.com/xExporter.rb 3D RAD zbylsxexporter With all of them I have the same problem: The model gets built correctly but the textures are deformed. The sizes of my texture files are multiples of four and inside Sketchup the model looks prefect. That's the texture file which is 256x256: And this is how it looks like in my XNA program: What can I do?

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• Boat passing under a bridge in a 2D tile based RTS

  - by aleguna

  I'm writing a 2D tile based RTS. And I want to add a 'pseudo 3D' feature to it - bridges over the rivers. I havent't start any coding yet, just trying to think how it fits the collision detection model. A boat passing under the bridge and a unit moving over the bridge will eventually occupy the same cell on the map. How to prement them from colliding? Is there a common approach to solve such a problem? Or I need to implement a 3D world to do this?

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• Is it a good idea to simplify an character -driven game engine to the point it's unnecessary to learn scripting/programming ?

  - by jokoon

  I remember, and I still think, that one cannot even make a prototyped 3D game to test just simple behaviors without using gigantic tools like unity or knowing extensive C++ programming, design pattern, a decent or basic 3D engine, etc. Now I'm wondering, since I know programming, that I'm still more lucky that the ones who need to learn programming prior to know how to make something: even scripted engines such as unity are not for kids, and to my sense they tend to dictate their ways of doing things, which is not the case with engine like ogre or irrlicht. I remember toying a little with the blender game engine, it was possible to link states or something I don't remember very well. Now I'm thinking that character driven games occupies a big part of the game market. Do you think it is a good idea to make a character-controlled oriented game engine which allows only to build AI instead of anything else ?

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• View Frustum Alternative

  - by Kuros

  I am working on a simulation project that requires me to have entities walking around in a 3D world. I have all that working, matrix transformations, etc. I'm at the point where I need what is essentially a view frustum, so I can give each entity a visible area. However, when looking over the calculations required to do it, it seems like a perspective frustum is only required to be able to project it onto a 2D screen. Is there another, easier to code solution, that would function better, such as an orthogonal perspective? Could I just define a shape mathematically and test wether the coordinates of the objects are inside or out? I am not really a 3D coder (and I am doing this all from scratch, not using an engine or anything), so I would like the simplest solution possible for my needs. Thank you!

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• Scan-Line Z-Buffering Dilemma

  - by Belgin

  I have a set of vertices in 3D space, and for each I retain the following information: Its 3D coordinates (x, y, z). A list of pointers to some of the other vertices with which it's connected by edges. Right now, I'm doing perspective projection with the projecting plane being XY and the eye placed somewhere at (0, 0, d), with d < 0. By doing Z-Buffering, I need to find the depth of the point of a polygon (they're all planar) which corresponds to a certain pixel on the screen so I can hide the surfaces that are not visible. My questions are the following: How do I determine to which polygon does a pixel belong to so I could use the formula of the plane which contains the polygon to find the Z-coordinate? Are my data structures correct? Do I need to store something else entirely in order for this to work? I'm just projecting the vertices onto the projection plane and joining them with lines based on the pointer lists.

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• Google offre son codec video VP8 sous licence open source, Firefox l'intègre déjà

  Google offre son codec video VP8 sous licence open source, Firefox l'intègre déjà A l'occasion d'I/O (Innovation et Ouverture), sa conférence annuelle pour les développeurs, Google a fait plusieurs annonces importantes. Il a ainsi révélé que son codec vidéo VP8 sera désormais disponible en open source et sans royalties. Il s'agit d'un concurrent libre, en opposition aux technologies propriétaires comme H.264, permettant un encodage vidéo de qualité pour une consommation de bande passante limitée. Tout ceci fait partie d'un projet autrement plus vaste, WebM, dont le but est la création d'un format multimédia ouvert hautement qualitatif. Pour cela, les d...

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• Polygon count budget

  - by Lautaro

  Is there any smart way to think about polygon budget relating to PC gaming today? My game will have one static 3d background scene and two fighters. No more enemies. I am thinking about having animated 3d models in the background for atmosphere, like spectators. So how could i find out what the polygon count for the player models and background scenarios could be. I guess the question is, what is a for today typical polygon count that most PCs can handle?

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• Asset Discovery Video

  - by Owen Allen

  A while back, I mentioned that we'd started putting together videos that explain some aspects of Ops Center. (The first one I talked about shows you how to create a server pool.) Well, there's another video that I wanted to show you; this one is about discovering assets. There are a few different tools you can use to discover assets in Ops Center, each one appropriate for different types of assets or different environmental needs. Salvador put together this video that walks you through the options in the Add Assets wizard, explaining when each option is used and how to use them: &amp;lt;span id=&amp;quot;XinhaEditingPostion&amp;quot;&amp;gt;&amp;lt;/span&amp;gt; We're adding more videos as we go, so if there's something else you'd like to see explained in video form, let me know.

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• Having trouble's understanding NIF model file format?

  - by NoobScratcher

  I'm attempting too develop a 3rd party application to make it easy to import 3d model part's into my mod for skyrim the plan was to have a fileviewer and preview window of the nif model but since , I don't know what the NIF file format actually is or where to get the vertex data from it or the hole nine yards of parsing a text file in detail I'm at a lost what to do. I'm very good at C++ but not at this super over complicated file formats , id much prefer .obj over the nif file format specification here -- http://niftools.sourceforge.net/doc/nif/index.html If someone could help me in understanding the file format in a natural and simple way and the exact parsing needed to create the 3D Model in the frustum and a explanation on how you figured that out would be happy to know. I use cygwin , notepad++ , win32 7

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