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• How to perform a detailed and quick 3D performance test

  - by gsedej

  I am wondering how to quickly test performance of my 3D graphics. Since glxgears is not benchmark what should I use. Also glxgears sometimes stuck at 60FPS, you cannot even compare before/after driver update (e.g. adding xorg-edgers PPA). Even glxgears doesn't really work out of box. One possibility is screensavers, but you can't see FPS. I am also not willing to install 600MB nexuiz, specially if I am running on Live-CD. Other 3D games are also very big... Unigine tests are too demanding for opensource drivers (problems with too low OpenGL and probably texture compression (S3TC...)). I would also like to test OpenGL 2.x extentions. How to quickly test your 3D performance?

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• Ubuntu 12.04 crashing

  - by James Mullinix

  We have a server with 2x32gb sas raid 1 and 4x1tb raid 10 + 2x1tb hot spares. Whenever we try to copy the 1tb and 1.5e6 files to a backup location (even just using tty1 cp command) it fails. We have tried using backintime and dejadup, and resorted to a manual cp to an external usb2 HDD. When that failed, we tried installing an internal HDD on the mobo (not on raid) and another cp, which also fails. The failures lock up the system and we are left with an unfortunate hard reboot situation. After reboot, syslog tends to be empty (only containing newly booted data) and we haven't a clue where to start. It has been 3 weeks since our last successful backup and we are getting nervous... -using 3ware raid controller, 8gb ram and nvidia pciexpress graphics with a gigabyte mobo and xeon 4-core processor.

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• You do not appear to be using the NVIDIA X driver

  - by Vishal shekhar

  my laptop has nvidia GT540m yesterday i install nvidia-current after updating fromsudo apt-add-repository ppa:ubuntu-x-swat/x-updates then i write sudo nvidia-xconfig and then reboot my desktop visual effect changes and it look good like nvidia is working but still glx i not working and nvidia-setting tells me that You do not appear to be using the NVIDIA X driver my dkms status is nvidia-current, 304.43, 3.2.0-30-generic-pae, i686: installed lspci |grep VGA output : 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 540M] (rev a1) also i can not login to my admin account but when i login to standard user or guest it works but still NVIDIA X driver is not working can any one suggest something so that NVIDIA X Driver start working as i seen many forum but none worked for me earlier i tried nvidia-173 ,nvidia-current(before x-swat/updates reprository) but none works for me

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• Connect Lenovo W520 with TV using VGA output

  - by el10780

  I am trying to connect my Lenovo Thinkpad W520 with my 32 inch TV (Samsung) using he VGA output.The problem is that after connecting it with the TV I go to System Settings and then Monitors but it doesn't show up there.I rebooted my system and again nothing happened.So I tried to change my default video card in the BIOS and I chose to boot with Intel's card only.Again though nothing happened.I didn't tried with my NVidia video card because last time I did that Ubuntu was completely destroyed after saving the configuration file through the NVidia's X Server Control Panel.My laptop has NVidia Optimus technology,but I can choose from the BIOS which video card I want to use.After running : lspci | grep VGA in terminal the results are: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (It shows only the Intel's video card because curently I have chose to boot using only Intel's video card.If I chose from the BIOS that I want to use the NVidia Optimus Technology and the option to let the system whether or not the Optimus technology is supported then both cards will show up in terminal after running lspci | grep VGA.)

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• Handling cameras in a large scale game engine

  - by Hannesh

  What is the correct, or most elegant, way to manage cameras in large game engines? Or should I ask, how does everybody else do it? The methods I can think of are: Binding cameras straight to the engine; if someone needs to render something, they bind their own camera to the graphics engine which is in use until another camera is bound. A camera stack; a small task can push its own camera onto the stack, and pop it off at the end to return to the "main" camera. Attaching a camera to a shader; Every shader has exactly one camera bound to it, and when the shader is used, that camera is set by the engine when the shader is in use. This allows me to implement a bunch of optimizations on the engine side. Are there other ways to do it?

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• How do I install the driver for my Linksys AE1200 Wireless-N USB Adapter?

  - by Lewis Graham

  I recently downloaded Ubuntu from the main website with the hopes of dual booting it with Windows. While the operating system works, it says that I need to install a driver for my graphics card. When I type in my password the installation fails. I figure it is because I need Internet access. I tried to install my WiFi USB adapter with the installation disc but Ubuntu doesn't seem to run the setup when I click the exe. What are my available solutions as I would really like to use Ubuntu from my programming and Windows for my gaming needs? The name as read on the box is: Linksys AE1200 Wireless- N USB Adapter The description reads as such: ID 13b1:0039 Linksys (a comma messed up format) ID 046d:0a0b Logitech, Inc. ClearChat Pro USB (headset)

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• Ubuntu always freezes on a friend's machine

  - by missingfaktor

  I am posting this on my friend's behalf. I installed Ubuntu 12.04 on my friend's computer but it continuously froze, no desktop effects worked, and it was frankly unusable. I thought this might be an issue with Unity and how it interacts with his hardware, so I tried several other desktop environments on his machine. These include KDE, Xfce, and GNOME. The problems persisted regardless of the desktop environment. I would like to note that he dual boots his system with Windows 7. Even there no desktop effects work but the system is reasonably stable. The following screenshots describe some of his system information (He is running Xfce at this time): 1: 2: Card information: intel corporation 82G33/G31 integrated graphics controller (rev02). What is the issue and how can it be solved? Please let me know if I should add any more information. Thank you.

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• Windows 8 Consumer Preview and SkyDrive

  - by John Paul Cook

  SkyDrive integrates very nicely with Windows 8. More on that later. First, let’s discuss using Windows 8 x64 on VirtualBox. Since I wanted to test with x64 and didn’t have a Hyper-V server available, I used VirtualBox. The latest version of VirtualBox does list Windows 8 as a guest operating system choice. The first time I attempted the installation, I chose the experimental Direct3D graphics support. That didn’t work well. After what seemed like FOREVER looking at a completely black screen, I decided...(read more)

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• Listing technologies on a resume for a software position when your background is game programming?

  - by Ford

  So I'm thinking about applying for a entry level position in the software industry but my limited experience working and all my notable experience in college is with game technologies. Sure, the languages transfer over well but most of the technologies I have experience with are all related to graphics programming, engines of various types, and such, and do not transfer over at all. I feel like it would be inappropriate to just take my game programming resume and basically replace the word game with software for the reasons mentioned but on the other hand if I take them out I will only have languages and some technologies that I have some small passing experience with- which will obviously not reflect well on me. Should I leave them out or put them in, and if so how can I spin them to be appropriate?

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• Ubuntu 12.10 desktop/interface not showing on VirtualBox VM after login screen

  - by Jake

  I'm having some trouble with getting my Ubuntu to work on a VirtualBox VM. I made a clean installation of Ubuntu 12.10 on a VM without any errors. I arrive at the login screen, as soon as I press enter it does it's little loading thingy and then screen goes black, then this is all I get: http://i.imgur.com/zULUI.jpg I can access the terminal and pretty much all the other features through it, but I would like to have the GUI properly working. I've been looking around the web and looking at various fixes to similar problems, but can't seem to get it to work. I'm thinking this problem might have to do with the graphics? I'm running Windows 8 Pro as host, if that helps, might be some compatibility issues with VirtualBox in W8... Thanks in advance!

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• Ubuntu (and any other linux os) not booting from cd or usb

  - by Amith

  I will tell you the whole story,one night when i was using KDE on Ubuntu 10.10 Kwin crashed then i shut down the os next day when i booted it the display came completely garbled and i went to safe graphics mode ,it worked and in reinstalled the Nvidia drivers and then restarted .Then immediatly, It said No init found Busybox XX.XX then I thought ill do a fresh install I inserted the ubuntu cd provided to me by Canonical.When i pressed 'try ubuntu without installing' instead of the graphic boot screen i saw.Ubuntu 10.10 in regular text and a progress bar few seconds after that the screen was flooded with error messages first alot of white then red.I then went to my win7 installation and saw a website which told me to find a Ext3 reader and format the ubuntu partition and the swap.I did that and when i restarted. GRUB configuration not found grub> Then it took my win 7 ERD and restored 7's bootloder Xp and 7 were working i put in the livecd again,Same error,Now usin my seven,Please help geeks,Ive even tried Knoppix,Fedora,Debiane.t.c they wont boot and i want to retain my win 7 and winxp partitions,I really miss linux.

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• How do I advertise for volunteers for my open source project

  - by Code-Guru

  I have found a couple of related questions here on programmers.SE: How/where would I best advertise my open source project, in order to maximize my odds of finding collaborators? Where to find open source volunteers? My question is slightly different because I am primarily looking for non-coders to help with a few things in my new open source project. In particular, I'd like one or more people to create an icon and other graphics and to work on a web site, wiki pages, and/or other documentation. My project is a front-end for a baseball card database. So reaching out to baseball card collectors might be useful. Other than that, I would just like anyone who would like to contribute in small ways to a modest project. Where are some good places to advertise and find non-coder volunteers?

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• What is the ideal laptop for creative coding applications?

  - by Jason

  Hi, I am a creative coder using C++(cinder and OpenFrameworks) I am looking to upgrade from my MacBook, which slowed down to about 3fps this morning. My project involves particles systems and fluids reacting to audio analysis data and computer vision data in real-time. SD or HD? no biggie. I have asked many people what computer I need. Ideally, I want a MacBook Pro. But is that enough power? I've been told that I need a desktop for what I am doing though I'd rather stay portable I've been told that I should go PC linux to get the most power but I'd rather stay mac I've been told that RAM is more of bottleneck than processor speed I've been told that the Graphics Card is more important than CPU and that code optimizations such as using trees over lists, proper threading, sending tasks to the GPU make a bigger difference than the hardware!!! what's true?! what do I need? Any suggestions are greatly appreciated

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• Turn Your Browser Pane into a Game of Katamari Damacy

  - by Jason Fitzpatrick

  If you’re a fan of Katamari Damacy, a quirky and fun Japanese puzzle game made popular on the PlayStation, you’ll love this Javas script hack that turns your browser pane and its contents into a giant HTML-collecting game of Katamari Damacy. Katamari Damacy, for the unfamiliar, is a addictive game based on the premise that a galactic prince is on a mission to rebuild stars, constellations, and moons accidentally destroyed by his father. You roll around and collect objects (making yourself an increasingly larger ball in the process). This script hack puts a ball on your web browser pane (works best in Chrome) that you can roll around collecting elements from the web page. At first you can only grab links but as you grow you can grab increasingly large objects like photo elements off the page. It doesn’t have the sophisticated graphics of the Playstation version, of course, nor the detailed back story, but it’s a clever little hack that is sure to delight fans of Katamari Damacy. Katamari Hack [KatHack] Internet Explorer 9 Released: Here’s What You Need To KnowHTG Explains: How Does Email Work?How To Make a Youtube Video Into an Animated GIF

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• Which numeral systems are useful in computer science?

  - by authchir

  I am wondering which numeral system different programmers are using, or would use if their language has support for them. As an example, in C++ we can use: Octal by prefixing with 0 (e.g. 0377) Decimal by default (e.g. 255) Hexadecimal by prefixing with 0x (e.g. 0xff) When working with bitmask, I am using hexadecimal but would sometimes want to be able to express binary numbers directly. I know some programming language support it with 0b syntax (e.g. 0b11111111). Is there any other numeric system useful in some computer science domain (e.g. cryptography, codecs, 3D graphics, etc)?

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• Google I/O 2011: Accelerated Android Rendering

  Google I/O 2011: Accelerated Android Rendering Romain Guy, Chet Haase Android 3.0 introduced a new hardware accelerated 2D rendering pipeline. In this talk, you will be introduced to the overall graphics architecture of the Android platform and get acquainted with the various rendering APIs at your disposal. You will learn how to choose the one that best fits your application. This talk will also deliver tips and tricks on how to use the new hardware accelerated pipeline to its full potential. From: GoogleDevelopers Views: 11086 62 ratings Time: 48:58 More in Science & Technology

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• How do we install Unity-2D and dependencies offline?

  - by Takkat

  We have installed 11.04 32-bit on an old machine that has no internet connection and with a graphics card that is not suitable for running Compiz or Unity. Still, we would like to run Unity-2D on this machine. We are aware of answers to this Question. Sadly Keryx will not run on 11.04 32-bit because of unmet dependencies. Building an offline repository is not an option because of limited storage capacity. Is there any convenient other way to find, download, install, and eventually update unity-2 and all dependencies (preferably from an OS independent download path)?

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• Radeon HD5670 hangs after login

  - by pKaresz

  Thanks in advance for your advices. I installed, Ubuntu 12.04 today, on my PC with a Radeon hd5670 graphics card. The first error I encountered, (just like the first time Unity came out - after witch I waited to try Ubuntu again until now) is, that it hanged after login at the desktop wallpaper, with only the mouse cursor. Well actually the first problem was with the live CD, but I managed to install it, using the install now, not the try now. Live CD has the same problem, as after install. So, after installing and getting the error, I searched of course before asking this:) I found this: Ubuntu hangs at purple screen The accepted answer there helped me to get to this. (note, that the below picture is a screen taken from a working desktop, and then erased the parts that don't show on mine.) Note that there is nothing at the top except the brown bar. No shutdown button, no nothing. The system hangs, I can't click on anything, I can only wiggle around with my mouse XD

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• Can I hook my xbox up to my Ubuntu PC

  - by Anonymous John

  My old xbox 360 won't eject disks, it makes a sound,but won't open. I want to play games, so I think I could hook it up to my PC running Ubuntu 13.10 64-bit and maybe I could use my PC's DVD drive. Can this work at all, or am I just crazy? There is an HDMI port on the back of my graphics card. If I can't do that, is there any software for Ubuntu that can rip the game off of a CD and put it on a flash drive? I have heard xbmcbuntu works great for gaming, but it doesn't work with my PC.

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• soft question - Which of these topics is likely to be relevant in the future?

  - by Fool

  I hear some topics in computer science, such as object-oriented programming, are relevant today but may become obsolete in the future. I'm picking courses for a minor in computer science, and I need one more elective. Could someone help me choose topic(s) from the following list that would grant timeless knowledge, relevant and applicable in the future? Why are such topics relevant? Artificial Intelligence Human-Computer Interaction Object-Oriented Programming Operating Systems Compilers Networking Databases Graphics Automata and Complexity Theory Logic and Automated Reasoning Algorithms If some of these titles are too vague, I'll provide more info.

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• How are "Json.org"-like specs graphs called and how can I generate them?

  - by Sebastián Grignoli

  In http://www.json.org Douglas Crockford shows the specs of the JSON format in two interesting ways: In the right side column he lists a text spec that looks like a YACC or LEX listing. In the main body of the homepage, he put several images that gives us a simple way to visually understand the valid sequences that composes a JSON string. Those images look like a description of the path that a finite state automaton would follow when parsing the JSON string. Wich are the names (if any) of that listing format and that kind of graphics? Is there any software that renders a source file containing the specification into that kind of images?

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• Issues with nVidia GeForce 210 while watching movies

  - by David ???

  Ever since 10.04 I have been trying to resolve an issue with my graphics card - nVidia GeForce 210. I'm having issues when I watch movies - they are jumping all the time, even with Compiz disabled and when that is the only thing I am doing. I have tried the solution to How to get NVidia GeForce GT 210 drivers working on Lucid Lynx? but it didn't work. How can I fix this? Here are the steps I took: apt-get --purge remove xserver-xorg-video-nouveau edit /etc/default/grub to add the line GRUB_CMDLINE_LINUX="nouveau.modeset=0" sudo update-grub Reboot Download official Linux drivers from nVidia site. sh filename-of-downloaded-driver-package

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• HDMI Audio stops after TV turned off

  - by Ryan

  After the 12.04 Update my HDMI audio stops working anytime I turn off my 2nd monitor(plasma TV). Graphics card is a Radeon 6800 which has DVI out to 1st monitor, HDMI out to receiver which the TV gets it's Audio/Video. Audio is always via my receiver sound. Things work fine as long as it boots with the TV and Receiver on. Turn off the TV and BART's HDMI audio will go away, and the HDMI option vanishes from the sound menu. I had an occasional HDMI issue with 11.10 but turning on/off the TV would fix the sound. How can I hardcode things so that it always uses HDMI out of audio? I suspect the TV is sending a signal upon that 12.04 is now listening for. Turning the TV back on does NOT resolve this, and I'd suggest having the ability to override this new "feature" via sound menu.

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• T420 Triple Head with Optimus

  - by Rolo

  I see that this is possible on a T520 apparently (Triple-head on a Lenovo T520), but I can't see anyone claiming it's possible on a T420. I'm running 12.04 and have Bumbleebee installed and working fine but I can't get the display port monitor to display anything. The power light flicks on, but things only render on my VGA output monitor, and Ubuntu's display settings don't detect the third monitor. I'm not concerned with power management, ie, am happy to leave set on discrete graphics in the BIOS if that helps. Is this possible? Thanks.

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• Change screen resolution from terminal

  - by Keith

  When I enabled my Nvidia graphics card, it changed the resolution of my screen to larger than my screen. As the result I cannot access any functions that were previously on the right side of my screen. How do I undo this? I originally had 8.04 and was able to change the resolution to whatever I wanted. I'm a new user and can copy and paste commands from a post to terminal mode but that's about it. I have no idea what they are or what they mean.

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