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• Arch linux ati graphics crash after grub install

  - by Jay

  Ok, so I've had an arch linux w/ gnome 3 installed for a while now. And a while ago I installed ubuntu as another partition, I think to fix an issue that cause arch to fail. So, it was all working fine, but then I went and reinstalled grub 1 on the arch partition; Ubuntu had overwritten it on the install. Then when I tried to boot into arch it booted, but the graphics wasn't working correctly: gdm wouldn't even show, and there were weird colors instead. So, I uninstalled xf86-video-ati and then installed xf86-video-vesa. That made gdm run in fallback mode and I was able to boot to gnome 3 fallback mode (or whatever it's called). But I can't seem to get the graphics working correctly.

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• Chipset GPU causes a massive slowdown

  - by zyboxenterprises

  My AMD Radeon HD 7700 recently broke (fan stopped working and GPU overheated), and now I'm running on internal chipset graphics, and it causes a massive slowdown of the whole PC. I've changed the graphics memory from 32MB (minimum) to 256MB (highest), and it hasn't made any difference whatsoever. I'm using Windows Aero, and disabling it should have made a small difference, but it didn't; the whole PC is still slow. I know that it's not the computer build, because I built it myself, and it was a lot faster when it had the AMD Radeon HD 7700 in it, which is the reason why I believe it's the internal chipset graphics that are causing the problem. Is this behavior normal? I don't have the cash right now to go out and buy a new dedicated GPU. I'm using an ASRock N68C-GS FX motherboard with an AMD FX 4100 (overclocked to 4.3GHZ), with 4GB RAM. The overclock was an attempt to resolve this issue, and it isn't related to this issue that the integrated graphics is causing a slowdown.

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• Intel HD 4000 driver not working

  - by Sagar Parakh

  I have a Dell Inspiron 15r se 7520. I have upgraded my system to Windows 8.1 few days back. After the upgrade, my Intel HD 4000 graphics driver stopped working. I have downloaded the latest driver from Dell website but during installation it said that my graphics driver is not compatible or validated and also my dedicated graphics driver AMD ATI Raedon HD 7730m also stopped working. There is also a problem with my screen brightness: I am unable to change it. How to make my graphics driver work?

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• How to use dedicated video card instead of onboard?

  - by Mathias Lykkegaard Lorenzen

  Hi there! I tried running DxDiag (DirectX diagnostics), and I noticed that my graphics card is set to the onboard one that comes with the Core i5 processor (some Intel HD stuff). On my computer, I also have a dedicated graphics card (an Nvidia 310). No serious gaming stuff, I know - just for programming. However, I would still love to know how to switch to that dedicated graphics card instead. My laptop is an MSI CX720.

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• Issues with new graphics card and drivers

  - by Ortund

  With my onboard graphics card (Intel HD 4000) I was able to use 1680x1050 screen resolution. Using the same screen and an Asus ENGTS250 graphics card with 296.10 drivers installed, I'm not able to use that resolution anymore. Also, I've been having other trouble with driver installations. Using 340.52 or 337.88, I can't boot into Windows 7. I see the Windows Welcome screen and then the screen goes black, loses signal and the computer locks up. I think the drivers issues and the resolution problems go hand-in-hand. I have a feeling I could use a newer driver than 296.10 which would give me access to use the 1680x1050 resolution I want to use, but I'm terrified that if I update or install another driver, that the computer will lock up again. Can anyone recommend a [better] driver for me to use?

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• Are there any OpenGL implementations which can use a server to do the rendering?

  - by user1973386

  Assume I have 2 independent machines, one running Debian sid, and the other running Windows 7. The one running Debian sid has a decent graphics card, the Windows 7 machine has no graphics card and a weak processor. The two are connected over a fast local network. Are there any OpenGL implementations, where Windows 7 would use the Debian machine's graphics card to do OpenGL rendering "over the network"?

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• DVI vs HDMI graphics card output

  - by Shack

  Asking on behalf of someone: I want to buy a new graphics card but do not know which would be best in terms of output, DVI or HDMI, the sound part of the HDMI is not really required, I just need something to go to my new 32 inch hd tv. It accepts both DVI and HDMI. I only need it for basic gaming but mostly as a media center to watch movies and tv shows on. Also for windows media center's TV application, I need a tv card, should I get a graphics card with bult in tv card, or a usb dongle??

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• How to fix "The system is running in low-graphics mode" error?

  - by jokerdino

  Note: This is an attempt to create a canonical question that covers all instances of "low-graphics mode" error that occurs to a user, including but not limited to installation of wrong drivers, incorrect or invalid lightdm greeters, low disk space, incorrect installation of graphics card like ATI and Nvidia, incorrect configuration of xorg.conf file while setting up multiple monitors among others. If you are experiencing the "low-graphics mode" error when trying to login but none of the following answers work for you, please do ask a new question and then update the answers of this canonical question as and when your new question gets answered. When I try to boot into my computer, I am getting this error: The system is running in low-graphics mode Your screen, graphics cards, and input device settings could not be detected correctly. You will need to configure these yourself. How do I fix the failsafe X mode and login into my computer? Answer index: The greeter is invalid

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• Drawing custom graphics on the iPhone: CALayer vs. CGContext

  - by Henry Cooke

  Hi all, I have an application in which I'm doing some custom drawing, a bunch of lines on a gradient background, like so (ignore the text, they're just UILabels): At the moment, that's all done by starting a new CGContext, drawing stuff into it with CGContextDrawLinearGradient and CGContextStrokePath, then finally saving the resulting image with UIGraphicsGetImageFromCurrentImageContext. The positioning info is calculated while I'm laying out those labels, so it'd be a PITA (and duplication of effort) to calculate it all over again when the containing UIView is drawn with drawRect, so I'm drawing it ahead of time into a UIImage. All works fine, so far so good. However, I have a sneaking suspicion that it may be more efficient to use CALayers to do this drawing. My (cursory) understanding of the difference between the two approaches is that a CALayer is more like a bunch of instructions to draw stuff, and so takes up less memory until it's actually drawn onscreen, whereas drawing everything into a UIImage ahead of time means that you've got a sodding great bitmap kicking around in memory all the time, whether it's drawn or not. Is that a correct understanding? What is generally considered to be the best way of drawing custom images on the iPhone?

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• How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?

  - by Olie

  I have a UIImage (Cocoa Touch). From that, I'm happy to get a CGImage or anything else you'd like that's available. I'd like to write this function: - (int)getRGBAFromImage:(UIImage *)image atX:(int)xx andY:(int)yy { // [...] // What do I want to read about to help // me fill in this bit, here? // [...] int result = (red << 24) | (green << 16) | (blue << 8) | alpha; return result; } Thanks!

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• How do I controll clipping with non-opaque graphics-item's in Qt?

  - by JJacobsson

  I have a bunch of QGraphicsSvgItem's in a QGraphicsScene that are drawn connected by QGraphicsLineItem's. This show's a graph of a tree-structure. What I want to do is provide a feature where everything but a selected sub-tree becomes transparent. A kind of "highlight this sub-tree" feature. That part was easy, but the results are ugly because now the lines can be seen through the semi-transparent svg's. I am looking for some way to still clip other QGraphicsItem's in the scene to the svg item's, giving the effect that the svg's are semi-transparent windows to the background. I know this code does not use svg's but I figure you can replace that yourself if you are so inclined. int main(int argc, char *argv[]) { QApplication app(argc, argv); QGraphicsScene scene; for( int i = 0; i < 10; ++i ) { QGraphicsLineItem* line = new QGraphicsLineItem; line->setLine( i * 25.0 + 1.0, 0, i * 25.0 + 23.0, 0 ); scene.addItem( line ); } for( int i = 0; i < 11; ++i ) { QGraphicsEllipseItem* ellipse = new QGraphicsEllipseItem; ellipse->setRect( (i * 25.0) - 9.0, -9.0, 18.0, 18.0f ); ellipse->setBrush( QBrush( Qt::green, Qt::SolidPattern ) ); ellipse->setOpacity( 0.5 ); scene.addItem( ellipse ); } QGraphicsView view( &scene ); view.show(); return app.exec(); } I would like the line's to not be seen behind the circle's. I have tried fiddling with the depth-buffer and the stencil buffer using opengl rendering to no avail. How do I get the QGraphicsSvgItem's (or QGraphicsEllipseItem's in the example code) to still clip the lines even though they are semi-transparent?

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• How to draw a rounded rectangle in Core Graphics / Quartz 2D?

  - by mystify

  I need to draw an outline for a rounded rectangle. I know I can make lines and arcs, but maybe there is also a function for rounded rects?

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• Where do you find images and graphics designers for your softwares ?

  - by ereOn

  Hi, As a programmer, I'm sure some of you already experienced the same problem: You create a good software (free, open-source, or for friend-only diffusion, whatever) relying on good code and good ideas but since you're a programmer and not an image designer, your program looks just bad. While it seems pretty easy to find motivated developpers to join for free an open-source project, it seems quite hard to find a single free graphic designer. What free and good resources do you usually use for your programs/websites ? Do you have any cool tip that you're willing to share ? Do you know any place where to find people involved into graphic design willing to participate to open-source projects ?

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• Where do you find images and graphics for your softwares ?

  - by ereOn

  Hi, As a programmer, I'm sure some of you already experienced the same problem: You create a good software (free, open-source, or for friend-only diffusion, whatever) relying on good code and good ideas but since you're a programmer and not an image designer, your program looks just bad. While it seems pretty easy to find motivated developpers to join for free an open-source project, it seems quite hard to find a single free graphic designer. What free and good resources do you usually use for your programs/websites ? Do you have any cool tip that you're willing to share ?

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• Graphics Question: How do I restrict the mouse cursor to within a circle?

  - by Dan

  I'm playing with XNA. When I click the left mouse button, I record the X,Y co-ordinates. Keeping the mouse button held down, moving the mouse draws a line from this origin to the current mouse position. I've offset this into the middle of the window. Now, what I'd like to do is restrict the mouse cursor to within a circle (with a radius of N, centred on the middle of the screen). Restricting the mouse to a rectangular region is easy enough (by adjusting the origin by the difference of the mouse position and the size of the region), but I haven't a clue on how to start doing it for a circular region. Can anyone explain how to do this? Any advice on where to start would be helpful.

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• Unity 3D Not working where as Unity 2D works fine [closed]

  - by Stephen Martin

  I updated from 11.10 to 12.04 using the distribution upgrade, after that I couldn't log into using the Unity 3D desktop after logging in I would either never get unity's launcher or I would get the launcher and once I tried to do anything the windows lost their decoration and nothing would respond. If I use Unity 2D it works fine and in fact I'm using it to type this. I managed to get some info out of dmesg that looks like it's the route of whats happening. dmesg: [ 109.160165] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung [ 109.160180] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state [ 109.167587] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 1226 at 1218, next 1227) [ 109.672273] [drm:i915_reset] *ERROR* Failed to reset chip. output of lspci | grep vga 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) output of /usr/lib/nux/unity_support_test -p IN 12.04 OpenGL vendor string: VMware, Inc. OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 0x300) OpenGL version string: 2.1 Mesa 8.0.2 Not software rendered: no Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: no The same command in 11.10: stephenm@mcr-ubu1:~$ /usr/lib/nux/unity_support_test -p OpenGL vendor string: Tungsten Graphics, Inc OpenGL renderer string: Mesa DRI Mobile Intel® GM45 Express Chipset OpenGL version string: 2.1 Mesa 7.11 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: yes stephenm@mcr-ubu1:~$ output of /var/log/Xorg.0.log [ 11.971] (II) intel(0): EDID vendor "LPL", prod id 307 [ 11.971] (II) intel(0): Printing DDC gathered Modelines: [ 11.971] (II) intel(0): Modeline "1280x800"x0.0 69.30 1280 1328 1360 1405 800 803 809 822 -hsync -vsync (49.3 kHz) [ 12.770] (II) intel(0): Allocated new frame buffer 2176x800 stride 8704, tiled [ 15.087] (II) intel(0): EDID vendor "LPL", prod id 307 [ 15.087] (II) intel(0): Printing DDC gathered Modelines: [ 15.087] (II) intel(0): Modeline "1280x800"x0.0 69.30 1280 1328 1360 1405 800 803 809 822 -hsync -vsync (49.3 kHz) [ 33.310] (II) XKB: reuse xkmfile /var/lib/xkb/server-93A39E9580D1D5B855D779F4595485C2CC66E0CF.xkm [ 34.900] (WW) intel(0): flip queue failed: Invalid argument [ 34.900] (WW) intel(0): Page flip failed: Invalid argument [ 34.900] (WW) intel(0): flip queue failed: Invalid argument [ 34.900] (WW) intel(0): Page flip failed: Invalid argument [ 34.913] (WW) intel(0): flip queue failed: Invalid argument [ 34.913] (WW) intel(0): Page flip failed: Invalid argument [ 34.913] (WW) intel(0): flip queue failed: Invalid argument [ 34.913] (WW) intel(0): Page flip failed: Invalid argument [ 34.926] (WW) intel(0): flip queue failed: Invalid argument [ 34.926] (WW) intel(0): Page flip failed: Invalid argument [ 34.926] (WW) intel(0): flip queue failed: Invalid argument [ 34.926] (WW) intel(0): Page flip failed: Invalid argument [ 35.501] (WW) intel(0): flip queue failed: Invalid argument [ 35.501] (WW) intel(0): Page flip failed: Invalid argument [ 35.501] (WW) intel(0): flip queue failed: Invalid argument [ 35.501] (WW) intel(0): Page flip failed: Invalid argument [ 41.519] [mi] Increasing EQ size to 512 to prevent dropped events. [ 42.079] (EE) intel(0): Detected a hung GPU, disabling acceleration. [ 42.079] (EE) intel(0): When reporting this, please include i915_error_state from debugfs and the full dmesg. [ 42.598] (II) intel(0): EDID vendor "LPL", prod id 307 [ 42.598] (II) intel(0): Printing DDC gathered Modelines: [ 42.598] (II) intel(0): Modeline "1280x800"x0.0 69.30 1280 1328 1360 1405 800 803 809 822 -hsync -vsync (49.3 kHz) [ 51.052] (II) AIGLX: Suspending AIGLX clients for VT switch I know im using the beta version so I'm not expecting it to work but does any one know what the problem may be or even why they Unity compatibility test is describing my video card as vmware when its an intel i915 and Ubuntu is running on the metal not virtualised. Unity 3D worked fine in 11.10

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• Ubuntu Gnome 14.04 Instal Nvidia drivers

  - by user3524668

  I have been looking all over the web, and tried every suggestion I found to get the nvidia drivers working on my computer with Ubuntu Gnome 14.04, with no luck. Every time I install a driver or choose to use the driver from addition drivers, when I reebot, I cannot log in again. It gets stuck at the logo screen. I need to go to the ALT + CTRL + F1 to purge all nvidia traces so I can get back. Is it possible to install the new nvidia drivers? I just upgraded from 13.10 to 14.04, I have an Asus N550VJ which has hybrid graphics with Intel 4000 / Nvidia 750M What Im looking for is to try the primus functionality to disable the discreet card and enable it whenever I want to play or run heavy graphic stuff. When I was in 13.10 I was using bumblebee, but, since, the nvidia prime is supposedly mature enough, I wanted to try it. Is this possible for Ubuntu Gnome 14.04. I read there was a bug with gdm, but also, saw that it was already fixed. Thank you very much for your help. Im not that well versed in linux.

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• OpenGL ES 2.0: Using VBOs?

  - by Bunkai.Satori

  OpenGL VBOs (vertex buffer objects) have been developed to improve performance of OpenGL (OpenGL ES 2.0 in my case). The logic is that with the help of VBOs, the data does not need to be copied from client memory to graphics card on per frame basis. However, as I see it, the game scene changes continuously: position of objects change, their scaling and rotating change, they get animated, they explode, they get spawn or disappear. In such highly dynamic environment, such as computer game scene is, what is the point of using VBOs, if the VBOs would need to be constructed on per-frame basis anyway? Can you please help me to understand how to practically take beneif of VBOs in computer games? Can there be more vertex based VBOs (say one per one object) or there must be always exactly only one VBO present for each draw cycle?

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• Ubuntu on the Sony Vaio VPCY 21S1E

  - by tiax

  My girlfriend got a new Subnotebook for Christmas (Sony Vayo VPCY21S1E), which comes with an "Intel HD graphics" vga adaptor. When I try to boot the Ubuntu installer from USB, the screen goes blank after a short while, before I even see the Ubuntu logo. However, when I select "nomodeset" in the boot options, I can boot it to the CLI login prompt. When I start X, though, that only works in VESA mode (I've read Intel eventually got rid of Usermode Mode Setting and only offers KMS now, which I've disabled to get it to boot). What can I do to enable a) higher resolution than 1024x768 in VESA b) hardware acceleration for compiz, video playback, etc?

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• Theme changes after resuming from suspend in 10.10

  - by mouche

  I'm using a Dell Inspiron 1520 and Ubuntu 10.10. I've read a lot of questions about graphics problems after resuming from suspend, but most of them are much more serious than mine. I can boot, login and use Ubuntu fine. The problem is that my theme for my top bar and bottom bar changes to gray and blocky (not rounded). Oddly enough, the theme for the title bars of my windows stay the same dark theme. Any ideas how I can fix this? It works fine if I logout and log back in.

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• VG.net 8.5 Released

  - by Frank Hileman

  We have released version 8.5 of the VG.net vector graphics system. This release supports Visual Studio 2013. Companies who purchased a VG.net license after October 1, 2013, are eligible for a free upgrade. We will be sending you an email. There is one cosmetic problem which wasted our time, as we could not find a work around. It occurs when your display is set to a high DPI. You can see the problem in the image of the toolbox below, which uses a DPI of 125%, on Windows 7: The ToolboxItem class accepts only Bitmaps with a size of 16x16. We tried many sizes and many bitmap formats. As you can see, this tiny Bitmap is then scaled by the toolbox, and the scaling algorithm adds artifacts. This is an "improvement" Microsoft recently added to Visual Studio 2013.

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• Which GPU with my CPU for 1080p flash?

  - by oshirowanen

  Based on the following site: http://www.adobe.com/products/flashplayer/systemreqs/ I need the following minimum spec to play 1080p flash video via a browser: CPU: 1.8GHz Intel Core Duo, AMD Athlon 64 X2 4200+, or faster processor RAM: 512MB of RAM GPU: 64MB of graphics memory I only have a 2.8GHz Pentium 4 process which is no where near as good as the processor listed above. I don't want to upgrade my processor as I think it will mean I have to change the motherboard etc. So, my question is, what is the cheapest PCI-E GPU I can buy which will allow me to play smooth 1080p flash video via a browser. I think the cheapest I can get is the 8400GS, but am not sure if that will be able to handle 1080p with the processor I have. I have looked at the GT520 and was wondering if this is the cheapest GPU which I need, or if there is something cheaper which will do 1080p with a 2.8GHz Pentium 4. Or, will I have to get something better than a GT520?

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• Triple-head on a Lenovo T520

  - by codeape

  Lenovo T520 with integrated Intel HD graphics + a NVidia card (Optimus) Ubuntu 11.10 on the computer. I would like to use the built-in screen plus two external screens. This PDF indicates that it is possible to connect up to four external monitors to the laptop. The information is Windows only. I was planning to disable the NVidia card, since I have read that Linux support for Optimus is not good. Questions: Has anyone set up three monitors on NVidia hardware? Has anyone set up three monitors using Intel HD 3000? Can I expect it to work out of the box, or are there tricks I need to be aware of?

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• How do I get TV out working on an ATI X800 GTO²?

  - by Liran

  Is there any way to make my graphics card (ATI x800) work with tvout? I know there are no proprietary drivers for this card only the opensource ones. It uses this cable for video out: http://warningdang.dynalias.com/magento/media/catalog/product/cache/1/image/265x265/9df78eab33525d08d6e5fb8d27136e95/a/3/a31b_1.jpg Personally I use the yellow RCA for tvout (in windows). I hope there is a way to work it out because it's a really important feature for me and one of the only reasons I boot windows. Thanks ahead!

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• Intel HD graphic drivers for ubuntu 10.10 64bit: the brightness says its being adjusted but it isn't

  - by James

  Hey all, I picked up an hp dm3t laptop with intel HD graphics and installed ubuntu 10.10 64 bit on it. It works great -- the only problem is that the brightness controls on the keyboard don't work. The brightness is always at full. When I try to adjust it down, the indicator graphic indicates that it's going down but the actual brightness doesn't change. Is there anything that I can try to make this work? I'd really appreciate any help. I asked this on superuser.com and someone commented that I should play around with the intel hd drivers. I'm a total noob -- how do I do that? What else can I try? I reallly don't want to do back to windows.

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