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• nvidia: switching dvi socket

  - by lurscher

  I have Ubuntu 10.10 x86_64 with Nvidia 9800 gt and Nvidia driver version 270.41.06 My video card has two DVI sockets, but I only use the single monitor configuration. Now, I think the main DVI socket might be busted, so I want to try to enable the other as the main one, however, I don't know how to achieve that. I tried just plugging the monitor in that socket but it won't auto-detect it (it would have been way too easy to just work). This is my xorg.conf: Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" Option "Xinerama" "0" 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: builtin, VertRefresh source: builtin Identifier "Monitor0" VendorName "Unknown" ModelName "AOC" HorizSync 31.5 - 84.7 VertRefresh 60.0 - 78.0 ModeLine "1080p" 172.8 1920 2040 2248 2576 1080 1081 1084 1118 -hsync +vsync Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce 9800 GT" EndSection Section "Screen" # Removed Option "metamodes" "1024x768 +0+0" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "CustomEDID" "CRT-0:/home/charlesq/lg.bin" Option "TVStandard" "HD1080p" Option "TwinView" "0" Option "TwinViewXineramaInfoOrder" "CRT-0" Option "metamodes" "1080p +0+0" SubSection "Display" Depth 24 EndSubSection EndSection

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• Ubuntu won't boot and it is stuck on the loading screen

  - by Jordan March

  I had just installed it as dual boot 2 days ago, and everything was fine. I was installing some programs (i think it was Play On Linux) and I don't think the install was 100% done when the battery died. Since then it won't boot into Ubuntu; it just stays at the loading screen. I did make separate partitions for boot root home and swap. Can anyone help me get it back and running again? Even if I have to reinstall it. I just don't want to go back through getting all those apps. I'm running Ubuntu 12.10 64bit on a Acer Aspire 5750 core i3 cpu 4gb ram

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• What are the factors that determine the default frequency of a shader call?

  - by user827992

  After i have been played for some days with various vertex and fragments shaders seems clear to me that this programs are called by the GPU at every and each rendering cycle, the problem is that I can't really quantify this frequency and I can't tell if is based on some default values or not because I don't have a big collection of hardware right now to do extensive tests. For what i know the answer could be really trivial like "it's the same of the refresh rate of your monitor", but i would like some good answers on that to be clear on this. For instance looks really odd to me that all the techniques used to control the amount of FPS that i have seen until now uses a call for the OpenGL function glutGet(GLUT_ELAPSED_TIME) to retrieve a value in ms about when the rendering started but I have to relies on the CPU to do the math. Why I can't set an FPS value in OpenGL if OpenGL clearly has a counter and a timer/clock? PS I'm referring to OpenGL 3.0+

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• How can I make KDE faster in Ubuntu 12.04. It's very slow

  - by Rizwan Rifan

  I installed the kubuntu-desktop package in Ubuntu 12.04 LTS, but the problem is KDE responses very slowly. If I click on an application's icon to run it, it appears after 10 seconds and sometimes does not appear at all. It hangs all the time. The cursor is almost impossible to follow because of the lag. I have read on the Internet that Unity uses more memory and CPU than KDE. But on my PC Unity runs smoothly and KDE does not. So what should I do to make KDE as fast, responsive and smooth as Unity? My specifications are as follows: RAM: 1.5 GB (DDR2) Processor: 3 GHz Dual Core Graphics Card: Intel HD graphics with 256 MB memory.

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• Writing a DB Python or Ruby

  - by WojonsTech

  I am planning on writing a database. I know it's crazy and people will tell me there is no good reason to do so. I am really using it to get better at programming overall, this database wont be used in production. I am planning on writing it Ruby or Python. I have some experience with both languages, but no job or large project experience. I don't want this to be a this is better than that randomly I really need some facts. The things that I need to know are which of the language are better at the following things. Searching arrays/hashes? Sorting? Threading? Sockets? Memory management? Disk Reads/Writes? base64 encode/decode? Again this is just a project for myself. I will port it on github for the hell of it, but I don't expect it to be amazing or going up against mysql or mongodb any day.

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• Trouble with 12.10 lag

  - by Brennan

  Well basicly lately I have been having lag problems with 12.10. I will post my specs, but before the update to 12.10, it said that I had intel graphics. Now it says I have Gallium. My specs: *Memory: 3.9 GiB *Processor: Pentium(R) Dual-Core CPU E5500 @ 2.80GHz × 2 *Graphics: Gallium 0.4 on llvmpipe (LLVM 3.2, 128 bits) (used to say intel graphics) *OS Type: 32-bit *Disk: 486.1 GB The output of the command sudo apt-cache check is this: E: Invalid operation check The output of the command sudo lspci -nnk | grep -A5 VGA is this: 00:02.0 VGA compatible controller [0300]: Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e32] (rev 03) Subsystem: ASUSTeK Computer Inc. Device [1043:836d] Kernel driver in use: i915 00:1b.0 Audio device [0403]: Intel Corporation NM10/ICH7 Family High Definition Audio Controller [8086:27d8] (rev 01) Subsystem: ASUSTeK Computer Inc. Device [1043:8445] Kernel driver in use: snd_hda_intel

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• File system layout for multiple build targets

  - by Yttrill

  I am seeking some ideas for how to build and install software with some parameters. These including target OS, target platform CPU details, debugging variant, etc. Some parts of the install are shared, such as documentation and many platform independent files, others are not, such as 64 and 32 bit libraries when these are separated and not together in a multi-arch library. On big networked platforms one often has multiple computers sharing some large server space, so there is actually cause to have even Windows and Unix binaries on the same disk. My product has already fixed an install philosophy of $INSTALL_ROOT/genericname/version/ so that multiple versions can coexist. The question is: how to manage the layout of all the other stuff?

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• Ikoula propose 1000 nouveaux serveurs virtuels dédiés Flex'Servers gratuits pendant un mois à l'occasion des TechDays

  Ikoula propose 1000 nouveaux serveurs virtuels dédiés Flex'Servers gratuits Pendant un mois à l'occasion des TechDays Ikoula avait déjà lancé une promotion sur son offre Flex'Server en proposant 500 seveurs gratuits. Aujourd'hui, l'entreprise renouvelle son opération à l'occasion des TechDays et relance son offre. Elle comprend désormais de nouvelles ressources à prix privilégié. Quatre configurations sont disponibles : de ½ à 4 CPU, de 256 Mo à 2 Go de RAM, et de 10 à 80 Go de disque dur. A l'occasion des TechDays, 1 000 Flex'Servers sont offerts pendant un mois. Après le premier mois, ces serveurs dédiés virtuels sont facturés à partir de 5.99€ HT/moi...

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• Clock drift even though NTPD running

  - by droffo

  I'm having a problem with the clock drifting on my PC. I'M running Ubuntu 10.10 on an somewhat crusty IBM e-server (1.5GB RAM, 2.4GHz CPU) ntpd is running (started at run level 2) servers are defined: server 1.us.pool.ntp.org server 2.us.pool.ntp.org server 3.us.pool.ntp.org server time.nrc.ca server ntp1.cmc.ec.gc.ca server ntp2.cmc.ec.gc.ca server wuarchive.wustl.edu server clock.psu.edu Looking at the log file, it would seem that the ntp daemon is running, but the system clock never seems to be set, however. If I manually set the time from a Casio "atomic" watch, the date/time displayed by the Clock applet drifts out of sync over time. Looking at the log file (below) it would seem the ntp daemon started ok and is running. So I am totally flummoxed right now :-( Here's a copy of my ntp.log file.

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• Critical Patch Update for October 2012 Now Available

  - by Steven Chan (Oracle Development)

  The Critical Patch Update (CPU) for October 2012 was released on July 16, 2012. Oracle strongly recommends applying the patches as soon as possible. The Critical Patch Update Advisory is the starting point for relevant information. It includes a list of products affected, pointers to obtain the patches, a summary of the security vulnerabilities, and links to other important documents. Supported products that are not listed in the "Supported Products and Components Affected" Section of the advisory do not require new patches to be applied. Also, it is essential to review the Critical Patch Update supporting documentation referenced in the Advisory before applying patches, as this is where you can find important pertinent information. The Critical Patch Update Advisory is available at the following location: Oracle Technology Network The next four Critical Patch Update release dates are: January 15, 2013 April 16, 2013 July 16, 2013 October 15, 2013 E-Business Suite Releases 11i and 12 Reference Oracle E-Business Suite Releases 11i and 12 Critical Patch Update Knowledge Document (October 2012) (Note 1486535.1)

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• Microsoft Developers Development Laptops [closed]

  - by FidEliO

  Possible Duplicate: What should I be focusing on when building a development PC? I am a Microsoft Developer on Sharepoint and ASP.NET. I am tring to buy a new laptop since the one that I have is an old one. From my point of view, Microsoft Development tools are becomming more and more resource-consuming (I don't find a suitable reason for it though). So I thought I would go for a Lenovo U260 i-7. I do not know exactly if it is going to meet my requirement so that is why I wanted to ask specifically Microsoft Developers about the specification of CPU, RAM, and Storage Disk. Thanks in advance

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• Ubuntu 12.10 live-usb won't boot

  - by user109175

  I own an Aleutia "Tango" low power PC. It uses a Intel Atom CPU N2800 @1.86GHz processor. I know there are Linux issues with the "Cedar Trail" graphics on this hardware but I can happily run Ubuntu 12.04 using the VESA graphics driver. I wanted to try out Ubuntu 12.10 so I created a live USB under 12.04 but I am unable to get this to boot. It gets as far as the Grub screen but after that the monitor shuts down. I have tried the F6 "nomodeset" option but that doesn't make any difference. Does anyone have any knowledge of this problem? Thanks in advance.

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• Blank Processes (?) in Natty Narwhal

  - by A Hylian Human

  I've noticed that there a seemingly blank processes (no process name, no cmdline info, only an ID), which also appear to cause my CPU to be running like crazy. My fans are going pretty much full speed and I have no idea what to do. Restarting does not help. Whenever I try to kill the process IDs, nothing happens. It's like new blank processes are continuously being created. I am really surprised that I am able to write up this question without Firefox lagging like crazy (and trust me, it's not Firefox causing the issue, as far as I can tell).

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• Beginner: How to Make Explorer Always Show the Full Path in Windows 8

  - by Taylor Gibb

  In older versions of Windows the Title Bar used to display your current location in the file system. In Windows 8 this is not the default behavior, however, you can enable it if you wish to. Display the Full Path in the Windows Explorer Title Bar Press the Windows + E keyboard combination to open Windows Explorer and then switch over to the View tab. On the right-hand side click on options and then select Change folder and search options from the drop-down. When the Folder Options dialog opens, switch over to the View options. Here you will need to tick the Display the full path in the title bar check box. That’s all there is to it. How To Switch Webmail Providers Without Losing All Your Email How To Force Windows Applications to Use a Specific CPU HTG Explains: Is UPnP a Security Risk?

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• Java is very slow on my laptop

  - by Ryan McClure

  I have 1.6.0_30 JRE on my 11.10 install. I have 3 GB of RAM and an Intel Core2 Duo CPU T6600 @ 2.20GHz × 2. Whenever I use my Java to play a game, the Java runs at about 4-5 FPS. When I used Windows, I found that I could get around 40 FPS. I'm not too terribly worried about this, but are there settings that I can tweak that I don't know about? If not, why is it that JRE Java can't do as much on Ubuntu as it can on Windows? Also, this may be related but I'm not too sure--My fan runs very fast when running a Java application. Is there a correlation?

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• Switching DVI socket

  - by lurscher

  I have Ubuntu 10.10 x86_64 with Nvidia 9800 gt and Nvidia driver version 270.41.06 My video card has two DVI sockets, but I only use the single monitor configuration. Now, I think the main DVI socket might be busted, so I want to try to enable the other as the main one, however, I don't know how to achieve that. I tried just plugging the monitor in that socket but it won't auto-detect it (it would have been way too easy to just work). This is my xorg.conf: Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 InputDevice "Keyboard0" "CoreKeyboard" InputDevice "Mouse0" "CorePointer" Option "Xinerama" "0" 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: builtin, VertRefresh source: builtin Identifier "Monitor0" VendorName "Unknown" ModelName "AOC" HorizSync 31.5 - 84.7 VertRefresh 60.0 - 78.0 ModeLine "1080p" 172.8 1920 2040 2248 2576 1080 1081 1084 1118 -hsync +vsync Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce 9800 GT" EndSection Section "Screen" # Removed Option "metamodes" "1024x768 +0+0" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "CustomEDID" "CRT-0:/home/charlesq/lg.bin" Option "TVStandard" "HD1080p" Option "TwinView" "0" Option "TwinViewXineramaInfoOrder" "CRT-0" Option "metamodes" "1080p +0+0" SubSection "Display" Depth 24 EndSubSection EndSection

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• Grid based collision - How many cells?

  - by Fibericon

  The game I'm creating is a bullet hell game, so there can be quite a few objects on the screen at any given time. It probably maxes out at about 40 enemies and 200 or so bullets. That being said, I'm splitting up the playing field into a grid for my collision checking. Right now, it's only 8 cells. How many would be optimal? I'm worried that if I use too many, I'll be wasting CPU power. My main concern is processing power, to make the game run smoothly. RAM is not a big concern for me.

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• Alternative to Firefox's Tab Groups feature for Chromium/Chrome

  - by Halkinn

  Firefox keeps crashing the whole time on my Lubuntu 12.04 since version 12, I don't know why, I am running it on a Pentium IV desktop so might be CPU shortage, however I use the same set of extensions and configurations that I have on Windows' Firefox and it rarely crashes, runs smoothly and besides on Windows it can handle much more tabs opened before some freeze actually happens. Chromium is working better so far on Lubuntu, but I really do miss the Tab Groups Firefox feature, which is great to group tabs and organize them, it really is a boost on my productivity. Are you aware of any add-on which is similar for Chrome/Chromium? I've searched around on Chrome's Web Store but no luck at the moment.

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• Graphic issue on intel945 chipset

  - by peeyush tiwari

  I used Intrepid(8.10) and my graphics used to work fine with compiz effects and all(on better resolution than 1024x768).Now I have upgraded to Precise(12.04)but I use gnome classic(with compiz effects)as my desktop but the compiz effects seem not to work, only unity 2D works. When I ran lshw -c video it gives: *-display UNCLAIMED description: VGA compatible controller product: 82945G/GZ Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 02 width: 32 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list configuration: latency=0 resources: memory:fea80000-feafffff ioport:dc00(size=8) memory:e0000000-efffffff memory:fea40000-fea7ffff Sysinfo shows: Display Resolution 1024x768 pixels OpenGL Renderer Gallium 0.4 on llvmpipe(LLVM 0x300) X11 Vendor The X.Org Foundation On SystemSettings: Memory 993.3 MiB Processor Intel® Pentium(R) 4 CPU 2.40GHz Graphics VESA: Intel(r) 82945G Chipset Family Graphics OS type 32-bit glxgears output comes to be around 100fps which used to be around 900fps in Intrepid

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• Upgrade to 12.04, nothing in dash, no date&time

  - by Nicolas

  I've upgraded from ubuntu netbook remix something to 12.04 lts, and I've got two issues. (Got an Asus eeePc 32bits, Intel 945GME x86/MMX/SSE2 and Intel Atom CPU N270 @ 1.6Ghz x2) Nothing in the dash. Only the "home" tab, other tabs are missing. No search result whatsoever. Missing elements in the system panel, privacy and date&time. No date&time on the right corner either. I've tried to reset unity with the terminal but the process was a whole mess full of errors. It did show date&time in the system panel (not on the top-right corner) while the process was going on in the terminal. But then it was such a mess (no more icons on the right corner amongst other things), and the process wouldn't complete: so I had to reboot the computer and get unity as before, still no date&time and privacy. Thanks for any help. nic

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• Developing a computer system based on Nand2Tetris [on hold]

  - by Ryan

  I recently finished a book called Nand2Tetris (nand2tetris.org) where I built my own computer system from scratch with its own machine language, assembly code, and a high level language called Jack that's translated to Hack binary. However, I feel like the "computer" I built throughout the course of this book (called the Hack computer) is a bit too simple for various reasons: 1) There are only two registers (D and A), whereas most computers have much more 2) Peripheral devices like mouse and keyboard have to be directly implemented 3) Peripheral devices use a pre-planned shared memory map to communicate with the CPU instead of using interrupts (which aren't covered at all) 4) Jack (the high level language) code doesn't compile to Assembly code directly, instead it compiles to an intermediate language, which in turn gets translated to Assembly. 5) There is no ROM or permanent storage device, everything is stored in RAM 6) No support for colored monitor, networking or sound I would like to build a more complicated computer system now based on what I've learned from Nand2Tetris. Does anyone know of any good resources or books to get started on this? (BTW by computer system I mean software that can emulate the hardware of a virtual computer with its own unique instruction set)

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• How to divide work to a network of computers?

  - by Morpork

  Imagine a scenario as follows: Lets say you have a central computer which generates a lot of data. This data must go through some processing, which unfortunately takes longer than to generate. In order for the processing to catch up with real time, we plug in more slave computers. Further, we must take into account the possibility of slaves dropping out of the network mid-job as well as additional slaves being added. The central computer should ensure that all jobs are finished to its satisfaction, and that jobs dropped by a slave are retasked to another. The main question is: What approach should I use to achieve this? But perhaps the following would help me arrive at an answer: Is there a name or design pattern to what I am trying to do? What domain of knowledge do I need to achieve the goal of getting these computers to talk to each other? (eg. will a database, which I have some knowledge of, be enough or will this involve sockets, which I have yet to have knowledge of?) Are there any examples of such a system? The main question is a bit general so it would be good to have a starting point/reference point. Note I am assuming constraints of c++ and windows so solutions pointing in that direction would be appreciated.

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• Partitions and cdrom are not mounted, and the bars are missing in Ubuntu 12.04

  - by nuit

  Provide my spec and sorry for my poor English first. MB: Gigabyte G31M-S2L (bios ver. F9) CPU: intel E5200 2G RAM HD1: WD 160G with 2 partitions (partition 1:60G, NTFS, win xp; partition 2:100G, NTFS) HD2: WD 320G with 2 partitions (partition 3:220G, NTFS; partition 4:100G, ext4, Ubuntu) Recently, I tried to install Ubuntu 12.04 Beta 2 on my desktop PC (on partition 4). At the beginning, everything looked great including the auto-mounting of partitions 1~3 and the unity (3D). However, after I deleted and re-allocated the partitions on HD2 and re-installed Ubuntu on partition 4, the partitions 1~3 are no longer auto-mounted when I logged in the desktop (and even the inserted cdrom would not be mounted either), and the launch bar and menu bar in unity (3D) are missing. The configurations during these two installations are all the same as default. Are there any possible reasons or solutions for this issue? Thank you in advance!

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• Can't install lib32ncurses5-dev or ia32-libs

  - by tito_drum

  I'm trying to install Android source and I keep getting this error. I kept with the installation but seems these packages are sort of required to have a complete and successful installation. this is my error Package lib32ncurses5-dev is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source Package ia32-libs is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'lib32ncurses5-dev' has no installation candidate E: Package 'ia32-libs' has no installation candidate E: Unable to locate package lib32readline5-dev E: Unable to locate package lib32z-dev I have a VM with Ubuntu on Intel® Core™ i5-2300 CPU @ 2.80GHz and 32-bit system

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• problems with graphic performance in Ubuntu 12.04

  - by Falk

  in advance: my English is not perfect ;) processor: Intel® Core™2 Duo CPU E8500 @ 3.16GHz × 2 memory: 3,9 GiB graphics: GeForce GTX 460 Ubuntu 12.04 32-Bit fresh installed (previously 11.10 32-Bit) driver: NVIDIAs accelerated Driver (Version current-updates) probelm: In Ubuntu 12.04 I have problems with the performance of the graphics (games for example: Volley Brwawl, Neverball, Beep and Minecraft), and effects of windows (always at minimize, maximize...) There are laggs at animations, and the laggs in games are extremely annoying. Problems occur only in Ubuntu 12.04, everything was good in 11.10. No Problems with YouTube videos, HD videos. Is there a solution? BBecause I have found nothing here in the Forum and on Google. Or is an update coming soonfor driver or whatever? (This Bug is already registered in Launchpad.) Thank you!

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