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• opengl libraries for ubuntu running on Virtual Box

  - by vboxuser

  I am having Ubuntu 10.04 running on VirtualBox. Guest additions are installed successfully. But Guest additions do not provide the OpenGL library. To run open GL demo what needs to be installed. Some google links suggest Mesa utils. By my understanding is Mesa utils do not use vbox drivers to achieve hardware acceleration. Ubuntu 10.04 is running on VirtualBox and not on bare metal. The host comprise of Zx400 CPU with nvidia graphics driver. But this is not relevant since I would be using the vbox drivers provided by guest additions on VirtualBox. In this scenario how do I get OpenGL libraries on Ubuntu?. (Specially I am looking for solution other than Mesa, since mesa has support only for VMware and not for VirtualBox) How to get Opengl libraries which use vbox drivers for 3D hardware accleration?? As i already mentioned, ubuntu 10.04 is running on VirtualBox and not on bare metal. the host comprise of Zx400 CPU with nvidia graphics driver. but this is not relevant since i would be using the vbox drivers provided by guest additions on VirtualBox. In this scenario how to i get OpenGL libraries on Ubuntu. (Especially i am looking for solution other than Mesa, since mesa has support only for VMware and not for VirtualBox Thank you

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• How to force Multiple Monitors correct resolutions for LightDM?

  - by Hanynowsky

  I am affected by the BUG: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/874241 Otherwise, if like me you have a laptop connected to a second monitor of higher resolution, LIGHTDM at the login stage, mirrors the displays in both screens and assign to them a common resolution (1024X768) in my case, instead of extending the desktop (Primary screen with the greeter and secondary with just a logo as mentioned in the Multiple Monitors UX specifications book for 12.04). Here is my xrandr -q @L502X:~$ xrandr -q Screen 0: minimum 320 x 200, current 1920 x 1848, maximum 8192 x 8192 LVDS1 connected 1366x768+309+1080 (normal left inverted right x axis y axis) 344mm x 193mm 1366x768 60.0*+ 1360x768 59.8 60.0 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 287mm 1920x1080 60.0*+ 1600x1200 60.0 1680x1050 60.0 1280x1024 60.0 1440x900 59.9 1280x960 60.0 1280x800 59.8 1024x768 60.0 800x600 60.3 56.2 640x480 60.0 DP1 disconnected (normal left inverted right x axis y axis) I tried to force lightdm to execute some xrandr commands in order to set the right resolution for each monitor and extend the desktop, but I get a LOW GRAPHICS MODE ERROR (You're running in low graphics mode, your screen, input devices...did not get detected..) I created a simple script named lightdmxrand.sh: #!/bin/sh xrandr --output HDMI1 --primary --mode 1920x1080 --output LVDS1 --mode 1366x768 --below HDMI1 And told lightdm to run it : /etc/lightdm/lightdm.conf [SeatDefaults] greeter-session=unity-greeter user-session=ubuntu greeter-setup-script=/usr/bin/numlockx on display-setup-script=/home/hanynowsky/lightdmxrandr.sh Someone knows what is wrong!? Thanks in advance.

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• Wireless drivers

  - by Kencer

  The results for my laptop are as below. How will i install wireless drivers and graphics? $ lspci 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:14.0 USB controller: Intel Corporation Panther Point USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation Panther Point MEI Controller #1 (rev 04) 00:1a.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 1 (rev c4) 00:1c.1 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 2 (rev c4) 00:1c.3 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 4 (rev c4) 00:1d.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Panther Point LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation Panther Point 6 port SATA Controller [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation Panther Point SMBus Controller (rev 04) 02:00.0 Network controller: Broadcom Corporation Device 4365 (rev 01) 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 07) $ sudo lshw -c network *-network UNCLAIMED description: Network controller product: Broadcom Corporation vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:02:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:f0500000-f0507fff *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: eth0 version: 07 serial: 3c:97:0e:85:c0:0d size: 100Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=172.16.96.36 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s resources: irq:43 ioport:2000(size=256) memory:f0404000-f0404fff memory:f0400000-f0403fff $ rfkill list all 0: tpacpi_bluetooth_sw: Bluetooth Soft blocked: no Hard blocked: no

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• Should I use OpenGL or DX11 for my game?

  - by Sundareswaran Senthilvel

  I'm planning to write a game from scratch (a BIG Game, for commercial purpose). I'm aware that there are certain compute libraries like OpenCL, AMD APP SDK, C++ AMP as well as DirectCompute - both from MS (NOT interested in CUDA) are available in the market. I'm planning to write the game from the scratch, which includes the following engines... Physics Engine AI Engine Main Game Engine (... and if anything is missed). I'm aware that, there are some free physics engine libraries in the market. Not sure about free AI engine libraries. I'm bit confused in choosing between the OpenCL, AMD APP SDK, and C++ AMP libraries (as already mentioned i'm NOT interested in CUDA). I want my game to be published in Windows/Android/Mac OSX. It means it should be a cross-platform game. I will be having "one source code" that i'll compile for various platforms like Windows/Android/Mac OSX, and any others if i missed. Note: Since I'm NOT a Java guy, kindly do NOT suggest me the Java Language. For Graphics language should i use OpenGL or DirectX 11? I have heard that OpenGL runs on a single core, and not sure of DirectX 11. Between OpenGL and DirectX which one should i follow? or else, are there any other graphics language that i need to start with? I want to make use of the parallelism in GPU as well as CPU.

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• What is the program "Additional Drivers" (jockey-gtk) talking me about?

  - by Robert Vila

  The program says: "No proprietary drivers are in use on this system" But it doesn't say if it is talking about graphical drivers only or what. Then, it lists two drivers: NVIDIA accelerated graphics driver (version 173). NVIDIA accelerated graphics driver (version current) [recomended] Both have exactly the same description. What is the difference then? When I select the 1st one, it says: "This river is not activated",and there's a button to "activate" it. When I select the 2nd one, it says: "This river is activated but it is not currently in use", and the button is to "remove". So which one is in use? Why or what for should I have activated (enabled) and not in use? If it is in use it is activated? What is the difference between activate and remove? and what is the relationship between installed, activated, in use, enabled and removed, disabled, inactive and not-installed? Why can I activate the inactivated and remove (but not deactivate) the activated that is not in use? All this is very puzzling... What other drivers can I use for an Apple MacBook pro 3,1 and how? I see that there's a nouveau and I heard that there was going to be a new open source even better. > -display > description: VGA compatible controller > product: G84 [GeForce 8600M GT] > vendor: nVidia Corporation

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• Never before had a problem with Ubuntu desktop graphical display; Trying to use nvidia GT630

  - by focaccio

  I've been using ubuntu since 9.04 and never had a problem with Ubuntu brining up the desktop graphical user interface. However I am currently not able to see anything graphical past the install screens. I have an Intel DP55KG motherboard and just installed an nvidia gt630 graphics card (zotac), since the old graphics card failed. I can install the server and see text. So I do a apt-get install ubuntu-desktop...or apt-get install kubuntu-desktop...or apt-get install xubuntu desktop, but after the reboot there is no display...its like something is hung up. I tried using the Live quantal dvd and I do see the graphical prompt to try without installing, but after that the screen goes blank. I've tried two monitors and the same thing happens. There is a faint "glow" on the screen and I do not get a "no input signal" from the monitor, so something is happening. I can install an old OEM of XP so I know the video card and motherboard are at least semi functional. Any help is appreciated. Thanks, Greg

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• Strange resolution on Ubuntu 11.10

  - by FSchmidt

  I only just installed Ubuntu 11.10, so excuse me if this question is silly ;-) I have a Fujitsu Esprimo Mobile V655, nvidia 8200 graphics, and recently installed Ubuntu 11.10 using wubi. I had to modify booting commands to include nomodeset; otherwise Ubuntu would not boot. Now I did set my screen resolution to 1280 x 720, which is the correct resolution for this screen. Still, the display seems imperfect. The font sizes seem unnatural(too large / stretched) and text is quite blurry (especially in Firefox). Could it have something to do withe the nvidia graphics driver and/or the nomodeset parameter? How can I fix this? Update: I used jockey-gtk to update nvidia to the current version. This improved the resolution dramatically (no blurriness, fonts are good). It also means that I no loger need to include nomodesetin the boot commands. However, other problems were brought up by this. It seems that certain files cannot be accessed - icon (images) are missing, some task bars are completely unstyled (grey, block-form, win97 style). I also get this error message(roughly translated from German, so may be slightly different from actual) every time I reboot: Could not apply the stored configuration for the monitor: none of the chosen modi is compatible with the available modi. I have tried nvidia-xconfig, unity --reset , no improvements. Can anyone help, please?

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• 13.10 Saucy login issues; black screen, loop, and freeze

  - by user135598

  Once upgraded to I 13.10 I was not able to get past the login screen. I had the black screen. Also; I can not log on with low graphics mode from recovery either. It makes no difference if I try default graphics driver or not. Then after running sudo install -f from recovery root prompt I got a login loop. I have purged fglrx, fglrx-legacy, and nvidia-current. I updated my repository with xorg-edgers and reinstalled nvidia-current. Now it semi-freezes at the login screen when I try to log on as my normal user. I say 'semi' because I can still use my mouse to click on the upper right hand Ubuntu logo and Shut Down or Restart the PC. I still cannot log on with my user name, but I can through the Guest login. While logged in as Guest I added a new user account with administrative privileges. I CAN log into this account without problem and from here am able to see that my .dmrc file in my original account reads: [Desktop] Session=XBMC I have changed 'Session=XBMC' to 'Session=ubuntu' and rebooted, but to no avail. The file resets itself and makes a backup of my changes. Any help would be greatly appreciated.

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• Randomly Freezes - How Can I Diagnose the Problem?

  - by j0rd4n

  At random times, Ubuntu 10.04 freezes, and I have to do a hard shutdown. It was upgraded from 9.10 which didn't freeze. First, is this is common problem with a quick answer, and if not, what can I do to diagnose it? I've tried checking application/kernel logs, but nothing gives me a clue as to what caused the problem. My guess, is that since the OS froze, no logs could be updated. Ideas? SOLUTION: Solved it. My particular problem was my graphics card (integrated Radeon 9000 series). netconsole revealed I was getting the error: "reserve failed for wait". After trial-and-error, I manually configured my video card and disabled hardware acceleration. Completely fixed the issue. Here is what I did: Manually Created xorg.conf Ubuntu automatically configures xorg.conf and doesn't use a file. To edit this file, you have to tell Ubuntu to explicitly create one and then edit it. Here are the steps: Restart system Hold Shift as GRUB boots Select root terminal in GRUB login menu Execute: X -config xorg.conf.new Copy: cp xorg.conf.new /etc/X11/xorg.conf Disable Hardware Acceleration The following is specific to my Radeon card, but I'm sure other cards have a similar setup. Edit xorg.conf Find "Device" section for graphics card Uncomment "NoAccel" option and set to "True" Save + reboot Hope that helps.

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• What is the R Language?

  - by TATWORTH

  I encountered the R Language recently with O'Reilly books and while from the context I knew it was a language for dealing with statistics, doing a web search for the support web site was futile. However I have now located the web site and it is at http://www.r-project.org/R is a free language available for a number of platforms including windows. CRAN mirrors are available at a number of locations worldwide.Here is the official description:"R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S. There are some important differences, but much code written for S runs unaltered under R. R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, ...) and graphical techniques, and is highly extensible. The S language is often the vehicle of choice for research in statistical methodology, and R provides an Open Source route to participation in that activity. One of R's strengths is the ease with which well-designed publication-quality plots can be produced, including mathematical symbols and formulae where needed. Great care has been taken over the defaults for the minor design choices in graphics, but the user retains full control. R is available as Free Software under the terms of the Free Software Foundation's GNU General Public License in source code form. It compiles and runs on a wide variety of UNIX platforms and similar systems (including FreeBSD and Linux), Windows and MacOS."

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• What's the right/standard way of achieving separation of concerns?

  - by Ghanima

  Some background: I want to start developing games, and taking some of the advice given in this site, I've started with something simple and familiar, such as pong, tetris, etc. I want to take as much time as needed to make sure that I have the basics right before moving on to something bigger. I have medium programming experience but I realize making games is a different thing. I find myself wondering many things like should this be in a separate class? Should this module handle this stuff or is it better to let other modules have that kind of functionality? For example, the bouncing of a ball in pong, right now is handled in the ball module, but maybe it's better that some other module did it. Right now I have different modules: one for the graphics, one for the game logic, and others for the objects (depending on the kind of movement required, not all the objects are alike). I know I am asking a lot, any tips you have will be very much appreciated. Short question: What's the right or standard way of separating the modules? What have you found most effective? Is it enough to just keep the drawing (graphics) and the logic separate? Is it necessary to have a lot of classes? (for example for the objects in the game, to handle the movement, etc)

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• Multi-screen and Nvidia GT220

  - by Bohors

  Excuse me first for my broken English I have 3 monitors on two Nvidia GT220. Unity 2D works fine after using the proprietary drivers. But no way to use compiz effects. I'm on Ubuntu 11.10 (I also tested for curiosity 12.04 for the same result) I noticed in the "System Settings" / "details" that my graphics card is not recognized (graphics card "unknown") and "View" only returns me my first screen (with the correct resolution) also in unknown. $ lspci | grep VGA 01:00.0 VGA compatible controller: NVIDIA Corporation GT216 [GeForce GT 220] (rev a2) 05:00.0 VGA compatible controller: NVIDIA Corporation GT216 [GeForce GT 220] (rev a2) xorg.conf : Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 Screen 1 "Screen1" Below "Screen0" Screen 2 "Screen2" RightOf "Screen0" InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" Option "Xinerama" "1" 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" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor0" VendorName "Unknown" ModelName "Acer V243HL" HorizSync 30.0 - 80.0 VertRefresh 55.0 - 75.0 Option "DPMS" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor1" VendorName "Unknown" ModelName "LG Electronics L1920P" HorizSync 30.0 - 83.0 VertRefresh 56.0 - 75.0 Option "DPMS" EndSection Section "Monitor" # HorizSync source: edid, VertRefresh source: edid Identifier "Monitor2" VendorName "Unknown" ModelName "Acer V243HL" HorizSync 30.0 - 80.0 VertRefresh 55.0 - 75.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce GT 220" BusID "PCI:1:0:0" EndSection Section "Device" Identifier "Device1" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce GT 220" BusID "PCI:5:0:0" Screen 0 EndSection Section "Device" Identifier "Device2" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce GT 220" BusID "PCI:5:0:0" Screen 1 EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "TwinView" "0" Option "TwinViewXineramaInfoOrder" "DFP-0" Option "metamodes" "1920x1080_60_0 +0+0; nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen1" Device "Device1" Monitor "Monitor1" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "CRT: nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen2" Device "Device2" Monitor "Monitor2" DefaultDepth 24 Option "TwinView" "0" Option "metamodes" "DFP: nvidia-auto-select +0+0" SubSection "Display" Depth 24 EndSubSection EndSection Section "Extensions" Option "Composite" "Disable" EndSection Have you any idea? thanks

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• Having extreme issues getting Compiz working on Ubuntu 11.10 (32-bit)

  - by Josh Hornell

  I have been working very hard the past few days to try to get Compiz configured and working correctly but I have been running into a lot of issues. I first installed the CompizConfig Settings Manager and tried different features such as the desktop cube and couldn't get any of them to work. Then I read that I may not have the right graphics card drivers installed (Nvidia GT540m). So I went into the Additional Drivers tool and it shows that 'no proprietary drivers are in use on this system', which struck me as a bit odd as when I very first installed Ubuntu it showed that my Nvidia drivers were installed an active until I downloaded and installed the updates to Ubuntu and since then it's shown empty. I then tried to install my graphics card drivers manually via this article How do I install the latest Nvidia drivers via the Additional Drivers tool?. I rebooted and had no issue although I tried to go back into the CompizConfig Settings Manager and couldn't get anything to work as well as my Additional Drivers tool still showed no drivers installed. I feel like I've tried about everything I can think of and any help would be much appreciated!

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• How do I get a Dell Latitude e6420 working?

  - by David_G

  I've just installed Ubuntu 12.04 (64-bit) on a brand new Dell Latitude e6420, and I'm having a few problems. This laptop has an Optimus (?) setup - i.e. integrated gfx and an Nvidia Quadro NVS 4200M. First problem - I ran setup, etc, and discovered that I can only run unity2d - If I try and login with unity3d, it just defaults to 2d. This is with nvidia-current installed (302.07). Note also that I can't run nvidia-settings ("You do not appear to be using the NVIDIA X driver."), and there is no additional drivers found ("No proprietary drivers are in use on this system"). I tried to troubleshoot this, and removed nvidia, leaving (I guess) just Nouveau drivers - In that case, unity3d did work, but I was stuck with the open source Nouveau drivers powering the integrated graphics. So, obviously, I want to run unity3d, and be using the more powerful Nvidia graphics card. I've tried a bit of tinkering around, but I'm not sure the best way to proceed, or perhaps more importantly, I'm not sure of what the best final solution might be. I've heard about bumblebee - but frankly, I would prefer to have the proprietary Nvidia drivers working properly. Any help would be much appreciated!

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• cannot boot ubuntu 13.10 with my usb, Can i change the kernal on my laptop to run it?

  - by Carlos Dunick

  Currently i am running 12.04 and looking for an upgrade to 13.10 I first tried a bootable 64bit usb and failed. With the message saying "Kernal requires an x86-64 CPU but only detected an I686 CPU Unable to boot please use a kernal appropriate for your CPU" then tried 32bit and same message came up. Is this due to my laptop simply being to slow? or can/should i change the kernal somehow? Acer Aspire 5710z Intel Pentium dual core processor, 1.73Ghz, 533 MHz FSB, 1 MB L2 cache. 2GB DDR2 lspci 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03) 00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03) 00:1b.0 Audio device: Intel Corporation NM10/ICH7 Family High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 1 (rev 02) 00:1c.2 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 3 (rev 02) 00:1c.3 PCI bridge: Intel Corporation NM10/ICH7 Family PCI Express Port 4 (rev 02) 00:1d.0 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 (rev 02) 00:1d.1 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 (rev 02) 00:1d.2 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 (rev 02) 00:1d.3 USB controller: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 (rev 02) 00:1d.7 USB controller: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02) 00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7-M Family) SATA Controller [AHCI mode] (rev 02) 00:1f.3 SMBus: Intel Corporation NM10/ICH7 Family SMBus Controller (rev 02) 04:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express (rev 02) 05:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01) 06:00.0 FLASH memory: ENE Technology Inc ENE PCI Memory Stick Card Reader Controller 06:00.1 SD Host controller: ENE Technology Inc ENE PCI SmartMedia / xD Card Reader Controller 06:00.2 FLASH memory: ENE Technology Inc Memory Stick Card Reader Controller 06:00.3 FLASH memory: ENE Technology Inc ENE PCI Secure Digital / MMC Card Reader Controller

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• Information about rendering, batches, the graphical card, performance etc. + XNA?

  - by Aidiakapi

  I know the title is a bit vague but it's hard to describe what I'm really looking for, but here goes. When it comes to CPU rendering, performance is mostly easy to estimate and straightforward, but when it comes to the GPU due to my lack of technical background information, I'm clueless. I'm using XNA so it'd be nice if theory could be related to that. So what I actually wanna know is, what happens when and where (CPU/GPU) when you do specific draw actions? What is a batch? What influence do effects, projections etc have? Is data persisted on the graphics card or is it transferred over every step? When there's talk about bandwidth, are you talking about a graphics card internal bandwidth, or the pipeline from CPU to GPU? Note: I'm not actually looking for information on how the drawing process happens, that's the GPU's business, I'm interested on all the overhead that precedes that. I'd like to understand what's going on when I do action X, to adapt my architectures and practices to that. Any articles (possibly with code examples), information, links, tutorials that give more insight in how to write better games are very much appreciated. Thanks :)

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• Freeze on Boot WindowsXP

  - by kyle

  Ok first off I know I should have Windows 7 but i don't Its a really old computer and i'm not sure if it can run the latest OS of ubuntu but i'm trying any whay so here are my specs or what i could have gathered from the computer(viruses are every where and most of the drivers are gone) Specs OS WindowsXP(it isn't letting me know which one that is blocked) Graphics card(can't access device manger it is blocked also) graphics card is 2003-2004 era though ram 512mb last time i checked USB(Drivers Gone) Wireless Card(Drivers Gone) Lan Card(Drivers Gone) Audio(Drivers Gone) CD Drive (it runs and works but i can't check its properties that's blocked to) Computer Dell Inspiron 600m Good News I have the Driver CD for everything Bad News I Don't have the OS CD I know the Computer is trash but i want to flash it anyway and just install linux(ubuntu) The second problem is it doesn't even want to load the CD all the way it is just stuck at the Ubuntu Screen with all the bubbles orange and if i resart it just does it again. any help would be nice. EDIT: okay i tried the first comment and it said i need a firmware file from http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware the firmware is b43/ucode5.fw, b43-open/ucode5.fw is there any other way of installing this firmware without being in the Ubuntu because what I have read is I need to be in Ubuntu to do this... Thanks for all the help you are giving me i have read your comments but i don't want to wait another two hours downloading that if i can get it working on this...

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• How to debug a fatal system crash - [graphical loop DOTA2]?

  - by Huw

  Whilst playing DOTA2, I occasionally and apparently randomly seem to be experiencing a fatal crash where the display freezes fixed and the audio loops over approx the last .5 of a second. Now, I'm interested in resolving this - but my trouble is I don't know where to start. The error appears non-reproducible (I've tried returning to games and deploying the same combination of events in hopes of pinning to to a certain shader etc), and I don't know which part of 'the stack' it might be coming from. Variables that occur to me: I custom build this system, did I do something wrong - is my PSU not providing enough power to the graphics card? I am running Steam and DOTA under Linux, could this new software have a bug Might it be something to do with my ATI Catalyst graphics drivers Is some other background process interfering I'm usually mid game when this occurs, so i quickly kill the power and reboot (when i'm lucky i can get back in with only 1-2 mins lost!). So my question here relates to logs. Where should I start to look or how might I set up logs to help me pin down a fatal crash of this kind by recording moments up to / before a crash and is this likely to be something I should push Steam to do, or is there something at a system level? Then perhaps I can return with a more specific question and perhaps even a bug report :) Many thanks in advance.

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• Enabling GTX 570

  - by Silas

  Hello i just built up my new system: Asus Rock Z77 Extreme 4 Intel i7 3770k 16 Gb Corsair Ram Zotac Nvidia GTX 570 bequiet! 630W Power supply 120 GB SSD So after i installed UBUNTU 12.04 64 bit. It ran smoothly. I downloaded and installed all the recommended updates. After checking the Sytem details the GTX 570 didnt show up as graphics unit. so i figured i needed to download the drivers. So i did but being a complete newbie to linux i didnt succeed in installing them. (I think) Anyway after several tries and errors i shut down the PC and restarted it. Resultung in do Signal to my screen after trying to reboot and all the monitor outs with no result i took out the graphic card and now it boots normally but after booting it says there is a problem with the system the graphics cant be recognized something something. So Question A: What do i do? I Like linux but the arbitrarity of the Errors that occur without any changes to the system scare me. Question B: Is there A beginners guide to Ubuntu where i could start from scratch because i really want this to work? Question C: Now that the System is (suddently) showing these graphic errors So far without visible consequence despite the error message. should i reinstall the GPU and give the driver installation another try or the other way around? Ill be very grateful for any help. Thank you in advance!

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• background in JAVA [closed]

  - by leen.zd

  how can i put a background image in my java code? this is my code... what's error? import java.awt.Container; import java.awt.Dimension; import java.awt.Graphics; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; import javax.swing.JFrame; import javax.swing.JPanel; public class background extends JFrame { private Container c; private JPanel imagePanel; public background() { initialize(); } private void initialize() { setDefaultCloseOperation(EXIT_ON_CLOSE); c = getContentPane(); imagePanel = new JPanel() { public void paint(Graphics g) { try { BufferedImage image = ImageIO.read(new File("http://www.signe-zodiaque.com/images/signes/balance.jpg")); g.drawImage(image, 1000, 2000, null); } catch (IOException e) { e.printStackTrace(); } } }; imagePanel.setPreferredSize(new Dimension(640, 480)); c.add(imagePanel); }

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• Screen flickering / scrambling on an Asus UL30A

  - by user55059

  Recently my Laptop screen started to flicker. You can view the phenomena here: YouTube Sometimes the screen is totally scrambled, but most of the time it starts with the Title bar only. It happens inconsistently. My Laptop is Asus UL30A and I'm using Ubuntu 11.10. Output from command: sudo lshw -C display; lsb_release -a; uname -a; xrandr *-display:0 description: VGA compatible controller product: Mobile 4 Series Chipset Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 07 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:44 memory:fe400000-fe7fffff memory:d0000000-dfffffff ioport:dc00(size=8) *-display:1 UNCLAIMED description: Display controller product: Mobile 4 Series Chipset Integrated Graphics Controller vendor: Intel Corporation physical id: 2.1 bus info: pci@0000:00:02.1 version: 07 width: 64 bits clock: 33MHz capabilities: pm bus_master cap_list configuration: latency=0 resources: memory:fe800000-fe8fffff LSB Version: core-2.0-ia32:core-2.0-noarch:core-3.0-ia32:core-3.0-noarch:core-3.1-ia32:core-3.1-noarch:core-3.2-ia32:core-3.2-noarch:core-4.0-ia32:core-4.0-noarch Distributor ID: Ubuntu Description: Ubuntu 11.10 Release: 11.10 Codename: oneiric Linux steelke 3.0.0-14-generic-pae #23-Ubuntu SMP Mon Nov 21 22:07:10 UTC 2011 i686 i686 i386 GNU/Linux Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 293mm x 164mm 1366x768 60.0*+ 1360x768 59.8 60.0 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) DP1 disconnected (normal left inverted right x axis y axis) DP2 disconnected (normal left inverted right x axis y axis) I already rolled back the kernel to 3.0.0-14 instead of 3.0.0-17 as mentioned in this post, but without result. I guess the problem is related to the driver, because I don't see similar behaviour in the BIOS Setup. Any tips or help is welcome.

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• How do I use LibreOffice's 3d transitions in Impress?

  - by Lvkz

  How can I get the 3D transitions working on Impress? I got a presentation coming soon, and as a requirement of the course the professor want us to use transitions on our "Power Point" chapter, obviously I have been using LibreOffice in every exercise but the native transitions are kind of lame, so when I install the newer version of Ubuntu, always install the extra package to the transitions - I had installed the 3D package: libreoffice-ogltrans 1:3.4.3-3ubuntu2 In previous versions of Ubuntu and worked perfectly, but for some reason is not working in this release. I got LibreOffice 3.4.3, Ubuntu Oneiric Ocelot (11.10) and my hardware is not relevant because I had it working before on previous releases. I know is not critical, but for my class is a pretty important deal, and can be a perfect opportunity to show the class that the cool stuff are not only in Windows. As a recomendation of one of Eliah Kagan, I'm putting the output of: sudo lshw -C video *-display:0 description: VGA compatible controller product: Mobile 4 Series Chipset Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 07 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:46 memory:f6c00000-f6ffffff memory:e0000000-efffffff ioport:efe8(size=8) *-display:1 UNCLAIMED description: Display controller product: Mobile 4 Series Chipset Integrated Graphics Controller vendor: Intel Corporation physical id: 2.1 bus info: pci@0000:00:02.1 version: 07 width: 64 bits clock: 33MHz capabilities: pm bus_master cap_list configuration: latency=0 resources: memory:f6b00000-f6bfffff And I'm not using Unity - it don't there anyways -, I'm using instead Gnome Shell.

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• How can I go about learning to write a shader

  - by Donutz

  So here's the background: I'm writing a game, just for my own amusement and education really. I've already come to the conclusion that XNA was the way to go for graphics, I've bought a couple of books, I've gotten basic game graphics going, and that's great. Now I'm starting to get a little in-depth and I'm starting to need to do stuff not covered in my (beginner) books. In particular, I need to display a sprite using a mask. Actually, what I need to do is display a generic sprite with a different color for each player. After banging around on the web, it seems the way to go is to have a color texture (one for each player) which I display using the mask, then display the generic part of the sprite. This has to be done dynamically, i.e. at runtime because there are too many sprites to keep in memory if I try to generate all the permutations at startup. So, I need to use a shader. Fine. I've downloaded a sample shader program, and managed to hit it with a hammer until it does something close enough to what I want so that I know I'm on the right track. And here, we come to my problem... I have no friggin' clue what I'm doing. While there are a lot of samples and such about shaders, no one ever actually explains what's going on. For instance, I can't find any real docs on Tex2D. I feel like the guys in Zoolander poking at the computer. So, my question (yes, I have a question) -- where is a good URL or what is a good book to take me from dumskie to reasonably competent to write a basic shader?

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• Farseer circle hangs where it's spawned

  - by necrosmash

  I'm currently trying to simply spawn a circle in Farseer. However, it's stuck wherever I spawn it! The game is updating fine, as I can see the circle spinning in place when I spawn it because of how I currently have gravity set up (following code from Game1.cs): // Initialise the screen center for use with // the Level class screenCenter = new Vector2(graphics.GraphicsDevice.Viewport.Width / 2f, graphics.GraphicsDevice.Viewport.Height / 2f); world = new World(new Vector2(20, 20)); currentLevel = new Level1(screenCenter, circleSprite, groundSprite, ref world); Level1 constructor: public Level1(Vector2 screenCenter, Texture2D circleSprite, Texture2D groundSprite, ref World world) { player = new Player(ref world, screenCenter, circleSprite); ground = new Ground(ref world, screenCenter, groundSprite); listLevelItems = new List<LevelItem>(); listLevelItems.Add(player); listLevelItems.Add(ground); } Player constructor: public Player(ref World world, Vector2 screenCenter, Texture2D sprite) { setSprite(sprite); setPosition((screenCenter / MeterInPixels) + new Vector2(0f, 0f)); playerBody = BodyFactory.CreateCircle(world, 96f / (2f * MeterInPixels), 1f, playerPosition); getBody().BodyType = BodyType.Dynamic; // Ball bounce and friction getBody().Restitution = 0.3f; getBody().Friction = 0.5f; } If I use a breakpoint and change the playerBody position while the game is halted, the ball does move, but stays fixed in its new location. Any help would be greatly appreciated.

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• No Unity after ubuntu 12.10 upgrade

  - by Aivaras

  After I upgraded to Ubuntu 12.10 from 12.04, there was low graphics and no Unity. Just the mouse and the wallpaper. So, I got into the terminal via Ctrl+Alt+T, launched Chrome and searched for a solution. As a result, I tried this: sudo sh amd-driver-installer-12.6-legacy-x86.x86_64.run It did not work. Then I tried this: sudo add-apt-repository ppa:makson96/fglrx sudo apt-get update sudo apt-get upgrade sudo apt-get install fglrx-legacy It did not work too. I removed the repository, got back the the xorg version to 1.13, and tried this: sudo sh /usr/share/ati/fglrx-uninstall.sh sudo apt-get remove --purge fglrx fglRx_* fglrx-amdcccle* fglrx-dev* xorg-driver-fglrx sudo apt-get remove --purge xserver-xorg-video-ati xserver-xorg-video-radeon sudo apt-get install xserver-xorg-video-ati sudo apt-get install --reinstall libgl1-mesa-glx libgl1-mesa-dri xserver-xorg-core It did return the screen resolution back, but still no Unity. Is there something what could I do? My graphics card is: lspci | grep VGA 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RV620 [Mobility Radeon HD 3400 Series]

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