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• How will Quantum computing affect us?

  - by CiscoIPPhone

  I am interested in quantum computing, but have not studied it in depth. Things like Shor's algorithm intrigue me. My question is: If quantum computing took off in a big way (i.e. functional quantum home computers were available) how would it affect us programmers and software developers? Would we have to learn how to make use of superposition and entanglement - would it change how we write algorithms? Would more mathematical programmers be required/would we need new skills? Would it change nothing at all from our perspective (i.e. would it be abstracted)? Your opinion is welcome.

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• How to change metamode in xorg.conf so that my game in FHD will be displayed only in the external monitor?

  - by Patryk

  I would like to launch my game only in the external monitor which I have attached to my laptop with hdmi cable. This is my current xorg.conf # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 319.60 (buildmeister@swio-display-x64-rhel04-15) Wed Sep 25 15:17:31 PDT 2013 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Files" EndSection Section "InputDevice" # generated from default Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "kbd" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" HorizSync 28.0 - 33.0 VertRefresh 43.0 - 72.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "metamodes" "1024x786,NULL;1280x720,NULL;NULL,1680x1050;NULL,1920x1080" SubSection "Display" Depth 24 EndSubSection EndSection Although with this config nothing changes (I have my game displayed in the laptop screen and exceeding a little bit onto the external monitor since I set it to be in 1920x1080) I have read this https://help.ubuntu.com/community/XineramaHowTo but with no luck of solving this issue. The only temporary solution for this problem now is to manually switch of the laptop display and then launch the game.

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• Who should determine team size?

  - by TaylorOtwell

  Developers, managers, or customers? I was recently involved in a situation where I felt like the customers were arbitrarily demanding for more developers on a team which already had too many developers. They were scared the project was going to be late (and it probably will be). Personally, I was scared we were going to fulfill Brook's Law. The group of programmers already lacked in-depth business knowledge, and some were even new to the technology (.NET), yet the customer wanted to add more developers who had even less business knowledge. The impression was that this would make the project get done quicker. I started wondering if the customer, who is extremely bright, but presumably knows little about IT project management, should really be the one determining team size.

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• Ask the Readers: Are You A Second Screen Multi-tasker?

  - by Jason Fitzpatrick

  Television watchers are no longer keeping their eyes continuously glued to the screen–increasingly smartphone, tablet, and laptop users have merged their mobile device and television time. Are you one of the second screen multi-taskers? Image courtesy of Umani, a TV-companion application for iPad. According to Nielsen user surveys, at least 80% of mobile device owners have used their device while watching television in the past month–27% said they use their mobile device alongside the television multiple times a day. What the survey results are light on, however, is an in depth look at what the users are doing with their second screen. This week we want to hear about whether or not you’re one of the second screen multi-taskers and what you use your mobile device for during your television/movie time. Sound off in the comments and then check back in on Friday for the What You Said roundup. How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It

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• C# books for the experienced programmer

  - by Michael Dmitry Azarkevich

  So I've been programming in C# for 3 years now (been programming in various languages for 3 years before that as well) and most of the stuff I learned I pieced together on the internet. The thing is, I want to understand C# more formally and in depth and so would like to get some books on the subjects. Any books you'd recommend? Also, I've heard good things about "C# 4.0 in a Nutshell", "Pro C# 2010 and the .NET 4 Platform" and "CLR via C#". What do you think of these? (The people at stackoverflow told me to take it here. Please, Please tell me I'm in the right place this time)

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• Lockdown Your Database Security

  - by Troy Kitch

  A new article in Oracle Magazine outlines a comprehensive defense-in-depth approach for appropriate and effective database protection. There are multiple ways attackers can disrupt the confidentiality, integrity and availability of data and therefore, putting in place layers of defense is the best measure to protect your sensitive customer and corporate data. “In most organizations, two-thirds of sensitive and regulated data resides in databases,” points out Vipin Samar, vice president of database security technologies at Oracle. “Unless the databases are protected using a multilayered security architecture, that data is at risk to be read or changed by administrators of the operating system, databases, or network, or hackers who use stolen passwords to pose as administrators. Further, hackers can exploit legitimate access to the database by using SQL injection attacks from the Web. Organizations need to mitigate all types of risks and craft a security architecture that protects their assets from attacks coming from different sources.” Register and read more in the online magazine format.

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• Video White Paper: Mega-Project Management: Reducing Risk & Complexity across the Value Chain

  - by Melissa Centurio Lopes

  Watch this short video white paper, to learn how Oracle Primavera can help you keep projects on track and protect your investments. You can also download the full white paper “Mega-Project Management: Reducing Risk & Complexity Across the Value Chain” to gain more in depth information about strategies for collaborating and sharing information and data in a systematic way across the value chain. Download the white paper in order to learn how your company can get the expected payoff from your next mega project. Register now to download the full complementary white paper, and discover how to: Improve decision-making and accountability through enterprise-wide visibility, workflows, and collaboration Reduce financial and performance risk

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• 3D rotation tool. How can I add simple extrusion?

  - by Gerve

  The 3D rotation tool is excellent but it only lets you rotate 2D objects, this means my object is wafer thin. Is there any way to add simple extrusion or depth to a symbol? I don't really want to use any 3rd party libraries like Away3D or Papervision, this is overkill for my simple 2D game. I only want to do this creating a couple motion tweens if possible. More Details: Below is what my symbol looks like (just with a bit more color). The symbol does a little 3D rotation and then flies away, it's just for something like a scoreboard within the app.

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• Java - learning / migrating fast

  - by Yippie-Kai-Yay

  This is not one of those questions like "How do I learn Java extremely fast, I know nothing about programming, but I heard Java is cool, yo". I have an interview for a Java Software Developer in a couple of weeks and the thing is that I think that I know C++ really good and I am somewhat good at C# (like, here I can probably answer on a lot of questions related to these languages), but I have almost zero experience with Java. I have a lot of projects written in both languages, I participiated in several open-source projects (mostly C++, though). Now, what should I do (in your opinion) to prepare myself for this Java interview. I guess migrating from C# to Java should be kind of fast, especially when you know a lot about programming in global, patterns, modern techniques and have a lot of practical experience behind you. But still two weeks is obviously not enough to get Java in-depth - so what should I focus on to have the best chances to pass the interview? Thank you.

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• In case you missed our Febrary Oracle Database Webcasts....

  - by jenny.gelhausen

  Click below to register and listen to the February Database Webcast replays: Maximize Availability with Oracle Database 11g with Oracle Database expert Joe Meeks. Think Your Database Applications are Secure? Think Again. with Oracle Security expert Roxana Bradescu. SANS Oracle Database Security: A Defense in Depth Approach with SANS senior instructor Tanya Baccam. Upgrading to Oracle Database 11g with Roger Snowden from Oracle Support's Center of Expertise. Consolidate for Business Advantage: From Storage to Scorecard with Oracle Business Intelligence and Enterprise Performance Management expert Tobin Gilman. Enjoy! var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-13185312-1"); pageTracker._trackPageview(); } catch(err) {}

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• First time shadow mapping problems

  - by user1294203

  I have implemented basic shadow mapping for the first time in OpenGL using shaders and I'm facing some problems. Below you can see an example of my rendered scene: The process of the shadow mapping I'm following is that I render the scene to the framebuffer using a View Matrix from the light point of view and the projection and model matrices used for normal rendering. In the second pass, I send the above MVP matrix from the light point of view to the vertex shader which transforms the position to light space. The fragment shader does the perspective divide and changes the position to texture coordinates. Here is my vertex shader, #version 150 core uniform mat4 ModelViewMatrix; uniform mat3 NormalMatrix; uniform mat4 MVPMatrix; uniform mat4 lightMVP; uniform float scale; in vec3 in_Position; in vec3 in_Normal; in vec2 in_TexCoord; smooth out vec3 pass_Normal; smooth out vec3 pass_Position; smooth out vec2 TexCoord; smooth out vec4 lightspace_Position; void main(void){ pass_Normal = NormalMatrix * in_Normal; pass_Position = (ModelViewMatrix * vec4(scale * in_Position, 1.0)).xyz; lightspace_Position = lightMVP * vec4(scale * in_Position, 1.0); TexCoord = in_TexCoord; gl_Position = MVPMatrix * vec4(scale * in_Position, 1.0); } And my fragment shader, #version 150 core struct Light{ vec3 direction; }; uniform Light light; uniform sampler2D inSampler; uniform sampler2D inShadowMap; smooth in vec3 pass_Normal; smooth in vec3 pass_Position; smooth in vec2 TexCoord; smooth in vec4 lightspace_Position; out vec4 out_Color; float CalcShadowFactor(vec4 lightspace_Position){ vec3 ProjectionCoords = lightspace_Position.xyz / lightspace_Position.w; vec2 UVCoords; UVCoords.x = 0.5 * ProjectionCoords.x + 0.5; UVCoords.y = 0.5 * ProjectionCoords.y + 0.5; float Depth = texture(inShadowMap, UVCoords).x; if(Depth < (ProjectionCoords.z + 0.001)) return 0.5; else return 1.0; } void main(void){ vec3 Normal = normalize(pass_Normal); vec3 light_Direction = -normalize(light.direction); vec3 camera_Direction = normalize(-pass_Position); vec3 half_vector = normalize(camera_Direction + light_Direction); float diffuse = max(0.2, dot(Normal, light_Direction)); vec3 temp_Color = diffuse * vec3(1.0); float specular = max( 0.0, dot( Normal, half_vector) ); float shadowFactor = CalcShadowFactor(lightspace_Position); if(diffuse != 0 && shadowFactor > 0.5){ float fspecular = pow(specular, 128.0); temp_Color += fspecular; } out_Color = vec4(shadowFactor * texture(inSampler, TexCoord).xyz * temp_Color, 1.0); } One of the problems is self shadowing as you can see in the picture, the crate has its own shadow cast on itself. What I have tried is enabling polygon offset (i.e. glEnable(POLYGON_OFFSET_FILL), glPolygonOffset(GLfloat, GLfloat) ) but it didn't change much. As you see in the fragment shader, I have put a static offset value of 0.001 but I have to change the value depending on the distance of the light to get more desirable effects , which not very handy. I also tried using front face culling when I render to the framebuffer, that didn't change much too. The other problem is that pixels outside the Light's view frustum get shaded. The only object that is supposed to be able to cast shadows is the crate. I guess I should pick more appropriate projection and view matrices, but I'm not sure how to do that. What are some common practices, should I pick an orthographic projection? From googling around a bit, I understand that these issues are not that trivial. Does anyone have any easy to implement solutions to these problems. Could you give me some additional tips? Please ask me if you need more information on my code. Here is a comparison with and without shadow mapping of a close-up of the crate. The self-shadowing is more visible.

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• Learning c++ by contributing to open source projects

  - by user1189880

  I have some general programming experience with a few different languages, my most skilled being php. I want to spend a lot of time over the next year learning c++ in much more depth and then eventually get to a good enough level to find a job as a junior developer working in c++. I really struggle to find things to develop as toy programs so want to contribute to an open source project in c++ to get really stuck in to. But the projects I see on github in c++ are very large and will require a lot of knowlege to even get started. Are there any smaller projects that I can contribute to or are there any other good ideas for learning c++ from a practical level.

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• How do I route my SMTP outgoing mail through gmail (Google Mail) ?

  - by Paula DiTallo

  Here is the quick answer:  Go into your client e software (e.g. Outlook, Thunderbird, etc.) for the account you are working on (usually default). Set the SMTP server to smtp.gmail.com Set the username as your gmail account user name (e.g. [email protected]). Gmail will need the username and password you use for that account, so if your default is set to some other email, be sure to set the username and password to that value, or click on the checkbox for username/password. Check TLS as the secure connection.   If you are looking for more in-depth info, check out Gina Trapani 's block on the topic.

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• Best keyboard drawer for programmers?

  - by David Pfeffer

  I'm a programmer with pretty severe neck problems. I program with three monitors, and I've found that my desk's short depth causes me to have to rotate my neck too much to see the "wing" screens. I can't get a deeper desk due to space restrictions. I'm looking for a keyboard drawer that can be installed onto a desk. However, I like the height of the keyboard on the desk. I'd like a drawer that is extremely low-profile/slim. My keyboard is less than 1" tall, so it'll fit pretty much anywhere. My ideal product would slide out from under my desk and "pop up" so that its surface is even with the desk. Does anything slim and nice like this exist? I'll even consider replacing the desk if a desk exists with this built-in.

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• Good book/resource recommendation for HTML5 mobile game development?

  - by Greg Bala

  The problem: I am taking an existing, 5 year old, html based MMORTS game and "HTML5-ing" it, "AJAX-ing" it and most importantly, optimizing for mobile devices like iPhone, android etc. For these devices, the application will be packaged as a downloadable app that is a wrapper for a browser which actually shows the game.. The Question Looking for a good book, or books, or in-depth articles that would help me learn: what tools I have in iOS, andriod applications for optimizing an html based game. things like caching of images, etc what kind of connectivity, or interactivity I can expect between the html/javascript pages and the wrapper - can I play sounds in the wrapper by triggering them from javascript? etc tip and tricks to optimize html/html5 & Javascript application to run well on mobile devices ETC :) Any recommendations would be greatly appreciated!!

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• Oracle Expert Live Virtual Seminars - Learn the tricks that only the expert know

  - by rituchhibber

  Oracle University Expert Seminars are exclusive events delivered by top Oracle experts with years of experience in working with Oracle products.         Introduction into ADF & BPM with Markus Grünewald - 11-12 December 2012 ADF/WebCenter 11g Development in Depth with Andrejus Baranovskis - 13-14 December 2012 Beating the Optimizer with Jonathan Lewis - Online - 17 January 2013 RAC Performance Tuning On-Line with Arup Nanda - 25 January 2013 Mastering Oracle Parallel Execution with Randolf Geist - 30 January 2013 Minimize Downtime with Rolling Upgrade using Data Guard with Uwe Hesse - 8 February 2013 For a full list of Oracle Expert Seminars near you or on line click here. Remember that your OPN discount is applied to the standard prices shown on the website.For more information, assistance in booking and to request new dates, contact your local Oracle University Service Desk.

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• Problems with NVIDIA drivers: White screen with full(or almost full)screen apps

  - by Felipe

  My NVIDIA graphic card is a 7050/610i. My problem is that after upgrading to the last NVIDIA drivers when I use fullscreen apps (or almost fullscreen) the windows goes white. My xorg.conf file: # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 270.29 ([email protected]) Wed Feb 23 16:38:34 PST 2011 Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" HorizSync 28.0 - 33.0 VertRefresh 43.0 - 72.0 Option "DPMS" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" Option "AddARGBGLXVisuals" "True" DefaultDepth 24 SubSection "Display" Depth 24 EndSubSection EndSection Section "Module" Load "glx" EndSection Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/psaux" Option "Emulate3Buttons" "no" Option "ZAxisMapping" "4 5" EndSection Section "InputDevice" Identifier "Keyboard0" Driver "kbd" # generated from default EndSection Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" EndSection Section "Device" Identifier "Device0" VendorName "NVIDIA Corporation" Driver "nvidia" Option "NoLogo" "True" EndSection Any idea on how to solve this? <--Sorry for bad english, ask for more info--

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• How to configure Ubuntu with Standard TV?

  - by Ryan Wyan

  Ubuntu 8 version nVidia card with driver 96.43.10-0ubuntu1 /etc/X11/xorg.conf Section "Screen" Identifier "Television Screen" Device "Television Device" Monitor "Television" DefaultDepth 24 Option "TVOutFormat" "COMPONENT" Option "TVStandard" "PAL-B" SubSection "Display" Depth 24 Modes "640x480@40" EndSubSection EndSection Section "Module" Load "glx" Disable "dri2" EndSection Section "Device" Identifier "Default Device" Driver "nvidia" EndSection Television is Sharp FlatX Standard TV, its specifications can be found at http://www.amazon.com/Sharp-X-Flat-32F630-Flat-Screen-32/dp/B0000AKVAV There were other screen sections which I removed. The TV shows just distorted image with just particles of different colors. I tried different resolution but did not figure out. Kindly help me how to setup TV with Ubuntu. I am newbie to this and not aware of subtle technicalities. Thanks indeed.

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• Improved Database Threat Management with Oracle Audit Vault and ArcSight ESM

  - by roxana.bradescu

  Data represents one of the most valuable assets in any organization, making databases the primary target of today's attacks. It is important that organizations adopt a database security defense-in-depth approach that includes data encryption and masking, access control for privileged users and applications, activity monitoring and auditing. With Oracle Audit Vault, organizations can reliably monitor database activity enterprise-wide and alert on any security policy exceptions. The new integration between Oracle Audit Vault and ArcSight Enterprise Security Manager, allows organizations to take advantage of enterprise-wide, real-time event aggregation, correlation and response to attacks against their databases. Join us for this live SANS Tool Talk event to learn more about this new joint solution and real-world attack scenarios that can now be quickly detected and thwarted.

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• How can I find a position between 4 vertices in a fragment shader?

  - by c4sh

  I'm creating a shader with SharpDX (DirectX11 in C#) that takes a segment (2 points) from the output of a Vertex Shader and then passes them to a Geometry Shader, which converts this line into a rectangle (4 points) and assigns the four corners a texture coordinate. After that I want a Fragment Shader (which recieves the interpolated position and the interpolated texture coordinates) that checks the depth at the "spine of the rectangle" (that is, in the line that passes through the middle of the rectangle. The problem is I don't know how to extract the position of the corresponding fragment at the spine of the rectangle. This happens because I have the texture coordinates interpolated, but I don't know how to use them to get the fragment I want, because the coordinate system of a) the texture and b) the position of my fragment in screen space are not the same. Thanks a lot for any help.

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• 3D texture coordinates for a cube

  - by Roshan

  I want to use glTexImage3D with cube. what will be the texture coordinates for it? i am using GL_TEXTURE_3D as target. I tried with u v coordinates same as 2d texture coordinates with z component 0-depth for each face. But that goes wrong. How to apply each layer to each face of the cube with target= GL_TEXTURE_3D? Lets assume i have 8 layers of 2D images in my 3D texture. I want all 8 layers to apply on each of the cube and not 1 layer on 1 face of the cube.

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• Best way to go about sorting 2D sprites in a "RPG Maker" styled RPG

  - by Aaron Stewart

  I am trying to come up with the best way to create overlapping sprites without having any issues. I was thinking of having a SortedDictionary and setting the Entity's key to it's Y position relative to the max bound of the simulation, aka the Z value. I'd update the "Z" value in the update method each frame, if the entity's position has changed at all. For those who don't know what I mean, I want characters who are standing closer in front of another character to be drawn on top, and if they are behind the character, they are drawn behind. I'm leery of using SpriteBatch back to front or front to back, I've been doing some searching and have been under the impression they are a bad idea. and want to know exactly how other people are dealing with their depth sorting. Just ultimately trying to come up with the best method of sorting for good practice before I get too far in to refactor the system effectively.

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• GLSL Bokeh using Quads and Textures

  - by Notoriousaur

  I'm trying to create a depth of field effect with bokeh sprites in GLSL. Specifically, what i would like to do is, for each pixel: See if the pixel is out of the focal range If it is, draw a quad and apply a texture to provide a bokeh sprite. This kind of implementation is seen in the Unreal Engine and by Matt Pettineo, however, both implementations are in DX11 and I'm using OpenGL. I'm a bit stuck on the drawing a quad and applying a texture bit. Does anyone know how I can do this, or provide any relevant links as to how I can do this? Thanks

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• Blank screen after installing nvidia restricted driver

  - by LaMinifalda

  I have a new machine with a MSI N560GTX Ti Twin Frozr II/OC graphic card and MSI PH67A-C43 (B3) main board. If i install the current nvidia restricted driver and reboot the machine on Natty (64-bit), then i only get a black screen after reboot and my system does not respond. I can´t see the login screen. On nvidia web page i saw that the current driver is 270.41.06. Is that driver used as current driver? Btw, i am an ubuntu/linux beginner and therefore not very familiar with ubuntu. What can i do to solve the black screen problem? EDIT: Setting the nomodeset parameter does not solve the problem. After ubuntu start, first i see the ubuntu logo, then strange pixels and at the end the black screen. HELP! EDIT2: Thank you, but setting the "video=vesa:off gfxpayload=text" parameters do no solve the problem too. Same result as in last edit. HELP. I would like to see Unity. This is my grub: GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="video=vesa:off gfxpayload=text nomodeset quiet splash" GRUB_CMDLINE_LINUX=" vga=794" EDIT3: I dont know if it is important. If this edit is unnecessary and helpless I will delete it. There are some log files (Xorg.0.log - Xorg.4.log). I dont know how these log files relate to each other. Please, check the errors listed below. In Xorg.1.log I see the following error: [ 20.603] (EE) Failed to initialize GLX extension (ComIatible NVIDIA X driver not found) In Xorg.2.log I see the following error: [ 25.971] (II) Loading /usr/lib/xorg/modules/libfb.so [ 25.971] (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32 [ 25.971] (==) NVIDIA(0): RGB weight 888 [ 25.971] (==) NVIDIA(0): Default visual is TrueColor [ 25.971] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0) [ 26.077] (EE) NVIDIA(0): Failed to initialize the NVIDIA GPU at PCI:1:0:0. Please [ 26.078] (EE) NVIDIA(0): check your system's kernel log for additional error [ 26.078] (EE) NVIDIA(0): messages and refer to Chapter 8: Common Problems in the [ 26.078] (EE) NVIDIA(0): README for additional information. [ 26.078] (EE) NVIDIA(0): Failed to initialize the NVIDIA graphics device! [ 26.078] (II) UnloadModule: "nvidia" [ 26.078] (II) Unloading nvidia [ 26.078] (II) UnloadModule: "wfb" [ 26.078] (II) Unloading wfb [ 26.078] (II) UnloadModule: "fb" [ 26.078] (II) Unloading fb [ 26.078] (EE) Screen(s) found, but none have a usable configuration. [ 26.078] Fatal server error: [ 26.078] no screens found [ 26.078] Please consult the The X.Org Found [...] In Xorg.4.log I see the following errors: [ 15.437] (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32 [ 15.437] (==) NVIDIA(0): RGB weight 888 [ 15.437] (==) NVIDIA(0): Default visual is TrueColor [ 15.437] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0) [ 15.703] (II) NVIDIA(0): NVIDIA GPU GeForce GTX 560 Ti (GF114) at PCI:1:0:0 (GPU-0) [ 15.703] (--) NVIDIA(0): Memory: 1048576 kBytes [ 15.703] (--) NVIDIA(0): VideoBIOS: 70.24.11.00.00 [ 15.703] (II) NVIDIA(0): Detected PCI Express Link width: 16X [ 15.703] (--) NVIDIA(0): Interlaced video modes are supported on this GPU [ 15.703] (--) NVIDIA(0): Connected display device(s) on GeForce GTX 560 Ti at [ 15.703] (--) NVIDIA(0): PCI:1:0:0 [ 15.703] (--) NVIDIA(0): none [ 15.706] (EE) NVIDIA(0): No display devices found for this X screen. [ 15.943] (II) UnloadModule: "nvidia" [ 15.943] (II) Unloading nvidia [ 15.943] (II) UnloadModule: "wfb" [ 15.943] (II) Unloading wfb [ 15.943] (II) UnloadModule: "fb" [ 15.943] (II) Unloading fb [ 15.943] (EE) Screen(s) found, but none have a usable configuration. [ 15.943] Fatal server error: [ 15.943] no screens found EDIT4 There was a file /etc/X11/xorg.conf. As fossfreedom suggested I executed sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.backup However, there is still the black screen after reboot. EDIT5 Neutro's advice (reinstalling the headers) did not solve the problem, too. :-( Any further help is appreciated! EDIT6 I just installed driver 173.xxx. After reboot the system shows me only "Checking battery state". Just for information. I will google the problem, but help is also appreciated! ;-) EDIT7 When using the free driver (Ubuntu says that the free driver is in use and activated), Xorg.0.log shows the following errors: [ 9.267] (II) LoadModule: "nouveau" [ 9.267] (II) Loading /usr/lib/xorg/modules/drivers/nouveau_drv.so [ 9.267] (II) Module nouveau: vendor="X.Org Foundation" [ 9.267] compiled for 1.10.0, module version = 0.0.16 [ 9.267] Module class: X.Org Video Driver [ 9.267] ABI class: X.Org Video Driver, version 10.0 [ 9.267] (II) LoadModule: "nv" [ 9.267] (WW) Warning, couldn't open module nv [ 9.267] (II) UnloadModule: "nv" [ 9.267] (II) Unloading nv [ 9.267] (EE) Failed to load module "nv" (module does not exist, 0) [ 9.267] (II) LoadModule: "vesa" [...] [ 9.399] drmOpenDevice: node name is /dev/dri/card14 [ 9.402] drmOpenDevice: node name is /dev/dri/card15 [ 9.406] (EE) [drm] failed to open device [ 9.406] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so [ 9.406] (WW) Falling back to old probe method for fbdev [ 9.406] (II) Loading sub module "fbdevhw" [ 9.406] (II) LoadModule: "fbdevhw" EDIT8 In the meanwhile i tried to install WIN7 64 bit on my machine. As a result i got a BSOD after installing the nvidia driver. :-) For this reason i sent my new machine back to the hardware reseller. I will inform you as soon as i have a new system. Thank you all for the great help and support. EDIT9 In the meanwhile I have a complete new system with "only" a MSI N460GTX Hawk, but more RAM. The system works perfect. :-) The original N560GTX had a hardware defect. Is is possible to close this question? THX!

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• Last week for early bird discounts to St. Louis Days of .NET 2012

  - by Arkham

  This is the last week to get the early bird $75 discount for St. Louis Days of .NET 2012 on Aug 2-4!! This year’s conference will have: A Microsoft keynote speaker discussing web technology and trends. Great sessions by great speakers! Over half of the sessions to be presented on Aug 3rd and 4th have been posted to the site and you can expect another 30 sessions to be posted this week. Although the MVC session has a waitlist, the other pre-compiler workshops on Aug 2nd still have spots available. Network with your peers at our Thursday and Friday evening social events. There will be food, drink, music, gaming, magic, and more! Open space sessions and a Lab in the Lounge where you can see what some of your peers are building and discuss in depth. While there is still room now, this year’s attendance will be capped at 900, so don’t hesitate! And remember, groups of 10 or more get an additional $25 off the ticket price.

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