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• How can I get nvidia-settings to work?

  - by Palace Chan

  I have an ASUS N56VM-TB71 with a GeForce 630M graphics card. I have ubuntu 12.04 and when I vga plugged in a dell monitor, i am able to use it. When I then use my laptops hdmi port to plug in my second monitor, nothing happens, so I went to nvidia-settings and I got the error: You do not appear to be using the NVIDIA X Driver, please run nvidia-xconfig as root and restart the X server. I ran this command and rebooted but I still cannot access nvidia-settings and I keep getting that error even though my /etc/X11/xconf.org is the one that got generated by running that command! What can I do to get around that and use my second monitor as well?

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• Finding files at more speed

  - by Chaitanya

  I have been using find command to find files on my 1 tb hard disk. it takes very long. then I used locate which proved to be faster with regular update using updatedb. But the limitation of locate is that I cannot find files with certain size or modified/created time. can you suggest me any ideas on how to find files at more speed or in that case how to pipe output of locate command in a way that all other information like size, time, etc. can be displayed or redirected to a file.

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• How can I gain access to a player instance in a Minecraft mod?

  - by Andrew Graber

  I'm creating Minecraft mod with a pickaxe that takes away experience when you break a block. The method for taking away experience from a player is addExperience on EntityPlayer, so I need to get an instance of EntityPlayer for the player using my pickaxe when the pickaxe breaks a block, so that I can remove the appropriate amount of experience. My pickaxe class currently looks like this: public class ExperiencePickaxe extends ItemPickaxe { public ExperiencePickaxe(int ItemID, EnumToolMaterial material){ super(ItemID, material); } public boolean onBlockDestroyed(ItemStack par1ItemStack, World par2World, int par3, int par4, int par5, int par6, EntityLiving par7EntityLiving) { if ((double)Block.blocksList[par3].getBlockHardness(par2World, par4, par5, par6) != 0.0D) { EntityPlayer e = new EntityPlayer(); // create an instance e.addExperience(-1); } return true; } } Obviously, I cannot actually create a new EntityPlayer since it is an abstract class. How can I get access to the player using my pickaxe?

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• window borders, menu bar missing over VNC

  - by zacaj

  I'm running Ubuntu 14.04 with Unity and Gnome3, however I don't have a screen hooked up anymore. I have installed x11vnc and run it with "-create" so that it will create a new X11 session, however when I VNC to it, the menu bar, window borders, etc are missing, windows are ordered based on creation time, and cannot be resized. Now, I don't really care if I end up with Ubuntu or Gnome's window manager, as long as this doesn't mess up my normal desktop stuff if I should happen to hook a monitor up again, and I'm not even attached to x11vnc if someone can point me to a good complete tutorial using something else, but I've been trying vino and tightvnc and rdp and x11vnc is the only one I've managed to get this far.

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• How do I use a 4GB USB flash drive to install Ubuntu 12.10?

  - by Logan

  I've downloaded "ubuntu-12.10-desktop-amd64" and used Pen Drive Linux to get it onto my USB. I then restarted my computer (a Windows 7 Home Premium edition) and entered the boot menu to have it boot from the Sandisk USB (it called it Sandisk Cruzer Cruzer). Linux came up and asked if I wanted to try or install. I picked install, connected to my Wi-Fi, and installed it. After my laptop restarted, Windows booted immediately. I have tried several times and cannot get a choice between the two. P.S. I have used the Windows Installer, Wubi, but at the last second it gave me some kind of error.

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• Multithreading synchronization interview question: Find n words given m threads

  - by rplusg

  I came across this question: You are given a paragraph , which contain n number of words, you are given m threads. What you need to do is , each thread should print one word and give the control to next thread, this way each thread will keep on printing one word , in case last thread come, it should invoke the first thread. Printing will repeat until all the words are printed in paragraph. Finally all threads should exit gracefully. What kind of synchronization will use? I strongly feel we cannot take any advantage of threads here but interviewer is trying to understand my synchronization skills? No need of code, just put some thoughts. I will implement by myself.

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• What is the easiest (preferably) graphical way to clone a hard drive to an image that I can open later?

  - by Roland Taylor

  I need to make a (preferably) mountable image of an 80GB Hdd, and store it on another hard drive. Is there some way that I can do this without losing data? Thanks for the answers I've received so far. The system in question cannot be used right now due to a problem with the power button :( [ugh!], but the information will really be useful =)! Thanks to all who answered so far, if anyone else wants to give me some tips I'll leave this open for a bit, as I still have not yet been able to clone the drive.

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• Public JCP EC Meeting on 12 November

  - by Heather VanCura

  The next JCP EC Meeting, and the last public EC Meeting of 2013, is scheduled for Tuesday, 12 November at 08:00 AM PST.  Agenda includes a discussion on invigorating your community participation in the JCP program. We hope you will join us, but if you cannot attend, the recording and materials will also be public on the JCP.org multimedia page. Meeting details below. Meeting information ------------------------------------------------------- Topic: Public EC Meeting Date: Tuesday, November 12, 2013 Time: 8:00 am, Pacific Standard Time (San Francisco, GMT-08:00) Meeting Number: 809 853 126 Meeting Password: 1234 ------------------------------------------------------- To start or join the online meeting ------------------------------------------------------- Go to https://jcp.webex.com/jcp/j.php?ED=239354237&UID=491098062&PW=NZjAyM2Q2YTVj&RT=MiM0 ------------------------------------------------------- Audio conference information ------------------------------------------------------- +1 (866) 682-4770 (US)   Conference code: 5731908   Security code: 1234 For global access numbers https://www.intercallonline.com/listNumbersByCode.action?confCode=5731908 Or +1 (408) 774-4073   

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• Why is Claws Mail starting in offline mode?

  - by Thanks

  I am sorry if this is not the best place to ask this, but hopefully someone might be able to help. After I upgraded to Ubuntu 11.10 from 11.04, Claws Mail 3.7.10 began starting in offline mode. It continues to do so upon every startup. I have searched and searched but cannot find any option that might affect this. Am I overlooking the option? Is this a bug with the current versions of Claws Mail and Ubuntu? Or is there some other way to fix this? Thank you.

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• Getting My Head Around Immutability

  - by Michael Mangold

  I'm new to object-oriented programming, and one concept that has been taking me a while to grasp is immutability. I think the light bulb went off last night but I want to verify: When I come across statements that an immutable object cannot be changed, I'm puzzled because I can, for instance, do the following: NSString *myName = @"Bob"; myName = @"Mike"; There, I just changed myName, of immutable type NSString. My problem is that the word, "object" can refer to the physical object in memory, or the abstraction, "myName." The former definition applies to the concept of immutability. As for the variable, a more clear (to me) definition of immutability is that the value of an immutable object can only be changed by also changing its location in memory, i.e. its reference (also known as its pointer). Is this correct, or am I still lost in the woods?

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• Keeping rotation between two objects

  - by user99

  In my XNA game I have two objects that collide. When the first object collides with the other it is able to latch on to it and move it about the world. I am having a problem with the math here (Math isn't my strong point). I currently have the second object latch on to the first and move around with it, but I cannot get it to keep it's original direction. So, if the object is facing up it should keep this direction relative to how it is being rotated with the original item. Any tips on how I could best to achieve this?

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• How do I resize my emacs22 window?

  - by Evan

  I tried searching for answers but can't find any. I'm running Ubuntu 10.04 LTS and have emacs22 installed: ii emacs22 22.2-0ubuntu9 The GNU Emacs editor (Emacs 22) ii emacs22-bin-common 22.2-0ubuntu9 The GNU Emacs editor's shared, architecture dependent file ii emacs22-common 22.2-0ubuntu9 The GNU Emacs editor's common infrastructure ii emacsen-common 1.4.19ubuntu1 Common facilities for all emacsen I find that I cannot resize the outer frame (X window) of the emacs session. When I move the mouse to the corner of the window, it doesn't change into the resize icon.... help!

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• Getting a domain sub-directory url for a new server

  - by Xianlin

  I have an web application server running tomcat and i need to publish my APIs to internet users. However I don't have a domain name for this server and I can only put the ip address of this server (e.g. 145.XXX.XXX.XXX) to point out where my API xml files are located. I have another web server running with a domain name "http://www.webserver.com" registered on the internet and I want to make use of its domain name to server my web application server API xml files location. How can I do that? using "www.webserver.com/api" or using "api.webserver.com"? which is better? Also I wonder if I want to publish a "rstp://145.XXX.XXX.XXX" web link for video streaming purpose, can I use "rstp://www.webserver.com/api" to replace it and how to do it? I always thought the url contain domain sub-directory name cannot point to another IP address, it only can point to another folder location on the webserver itself.

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• Multiple domains

  - by menardmam

  I got 6 domains : company.ca and company.com (because both where free, but we are a canadian company but can do business with the rest of the world). Then, we sell sportwear because of the company name is totally unknown to the world. Our product is we have bought product specific domain : chandails.ca and t-shirt.ca as well as shorts.ca and shorts.com. So those 6 domains are mine. Now what is the best way to do? Now all are 301 redirect to the main company name (.com) or make micro-site, super simple one page optimized for just shirt and one for shorts, then tell people to know more, go to the main site. Because now, I cannot really find the benefit of the search word in domain name edge if never somebody see something in that domain... I got confused and don't find strait answer to this question.

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• Tips for adapting Date table to Power View forecasting #powerview #powerbi

  - by Marco Russo (SQLBI)

  During the keynote of the PASS Business Analytics Conference, Amir Netz presented the new forecasting capabilities in Power View for Office 365. I immediately tried the new feature (which was immediately available, a welcome surprise in a Microsoft announcement for a new release) and I had several issues trying to use existing data models. The forecasting has a few requirements that are not compatible with the “best practices” commonly used for a calendar table until this announcement. For example, if you have a Year-Month-Day hierarchy and you want to display a line chart aggregating data at the month level, you use a column containing month and year as a string (e.g. May 2014) sorted by a numeric column (such as 201405). Such a column cannot be used in the x-axis of a line chart for forecasting, because you need a date or numeric column. There are also other requirements and I wrote the article Prepare Data for Power View Forecasting in Power BI on SQLBI, describing how to create columns that can be used with the new forecasting capabilities in Power View for Office 365.

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• Printing with Lacie Lightscribe requires root privileges

  - by James

  I have installed Lacie Lightscribe software on Ubuntu 12.04. Everything seems to be fine, the drive is detected, the proper media is detected, but when I click print I get the message "Printing Requires Root Privileges". I am the main (administrator) account on this computer, part of the sudo group and I cannot seem to find an answer to this dilemna in plain english. I've seen some apparently relevant posts which say things like "check whether the files /usr/4L/4L-gui and /usr/4L/4L-cli have any setuid-bits set. If so, remove them" but I need more detailed step-by-step instructions than that, please. Is there anyone who knows how to solve this?

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• How can I boot into Windows from GRUB rescue WITHOUT CD drive?

  - by user103968

  I took this from another website's string where i found no good answer This is my situation: installed Ubuntu without a CD (using A USB) dual boot installation (Windows 7+Ubuntu) didn't like the installation and decided to boot into Windows and delete the Linux partitions forgot to fix the mbr from within Windows Now, when I boot, I am stuck in the GRUB rescue limbo. Simple question: How can I boot into Windows from GRUB rescue? I cannot boot from CD because I don't have a CD drive, therefore the usual solutions (recovery CD etc) do not work. Any hints? Is there a way i can maybe do this through a USB? Thanks

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• Rotate 3D Model from a custom position

  - by Nipuna Silva

  I have a 3D Model like above in which i want to rotate it from a given location(pointed in red) but I can only rotate it from the middle. How can I rotate it from a custom point. Edit: I successfully able to rotate the model from the below position by getting the radius of the model and applying it to the world matrix Vector3 point = new Vector3(-radius, 0, 0); world = Matrix.CreateTranslation(-radius, 0, 0); But now I cannot change the position of the object and it always centered in middle of the screen. I think that's because i applied the above code. How can I place it anywhere I want?

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• OpenGL ES, orthopgraphics projection and viewport

  - by DarkDeny

  I want to make some simple 2D game on iOS to familiarize myself with OpenGL ES. I started with Ray Wenderlich tutorial (How To Create A Simple 2D iPhone Game with OpenGL ES 2.0 and GLKit). That tutorial is quite good, but I miss some parts of a puzzle. Ray creates orthographic projection using some magic numbers like 480 and 320. It is not clear to me why did he take these numbers, and as far as I can see - sprite is not mapped to the ipad simulator screen one-to-one pixel. I tried to play with parameters with which ortho matrix is created, but I cannot figure out what math is here. How can I calculate numbers (bottom, top, left, right, close, far) which will be parameters to orthographic projection matrix creation and have sprite on the screen shown in its original size?

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• Should I partition a 1TB Hard Disk whose primary use is media storage?

  - by Senthil

  I am going to get a 1TB hard disk. I will be storing 1080p or 720p movies, high-bitrate music and pictures in it. I use my PC 90% of the time only to play/listen/see those. I am running out of space in my current HD so I am getting another one. My specs are 2.7GHz Dual Core, 512MB GeForce 9400GT, 2GB DDR2 RAM and all the proper matroska codecs/players. I guess that is enough to play 1080p movies withough a glitch, given an ideal hard disk. I've read about proper partitioning giving performance improvement etc.. I don't want my hard disk to be the bottleneck. Can someone tell me whether I should partition my 1TB hard disk into many drives? If I should, what is the ideal size of each partition? Smooth playing of movies is very important to me. Once I start filling up the disk, there is no turning back. So I want to get it right before I start. Thanks.

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• Is it safe to convert Windows file paths to Unix file paths with a simple replace?

  - by MxyL

  So for example say I had it so that all of my files will be transferred from a windows machine to a unix machine as such: C:\test\myFile.txt to {somewhere}/test/myFile.txt (drive letter is irrelevant at this point). Currently, our utility library that we wrote ourselves provides a method that does a simple replace of all back slashes with forward slashes: public String normalizePath(String path) { return path.replaceAll("\\", "/"); } Slashes are reserved and cannot be part of a file name, so the directory structure should be preserved. However, I'm not sure if there are other complications between windows and unix paths that I may need to worry about (eg: non-ascii names, etc)

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• Deterministic Multiplayer RTS game questions?

  - by Martin K

  I am working on a cross-platform multiplayer RTS game where the different clients and a server(flash and C#), all need to stay deterministically synchronised. To deal with Floatpoint inconsistencies, I've come across this method: http://joshblog.net/2007/01/30/flash-floating-point-number-errors/#comment-49912 which basically truncates off the nondeterministic part: return Math.round(1000 * float) / 1000; Howewer my concern is that every time there is a division, there is further chance of creating additional floatpoint errors, in essence making it worse? . So it occured to me, how about something like this: function floatSafe(number:Number) : Number {return Math.round(float* 1024) / 1024; } ie dividing with only powers of 2 ? What do you think? . Ironically with the above method I got less accurate results: trace( floatSafe(3/5) ) // 0.599609375 where as with the other method(dividing with 1000), or just tracing the raw value I am getting 3/5 = 0.6 or Maybe thats what 3/5 actually is, IE 0.6 cannot really be represented with a floatpoint datatype, and would be more consistent across different platforms?

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• Google crawler not found an error inside of the <head> tag

  - by inckka

  I've found a crawler error in my site and it is listed as a page not found(404) link. Heres the broken link http://mydomain.com/blog/comments/feed/ I'm using Google web master tools and found that broken link coming from my web site pages' head tag. here's actual code where that link situated. <head> <link rel="alternate" type="application/rss+xml" title="My Domain Blog &raquo; Feed" href="http://www.my-domain.com/blog/feed/" /> </head> So Google report this link as a not found. Actually this link target is not an exact page or a location. But essential for the blog feeds. Anyway I have to fix this and remove from the Google crawler error's list. But haven't got any idea, because cannot redirect or do a 404 header with this link target. Have anyone got an idea of fixing this?

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• Result class dependency

  - by Stefano Borini

  I have an object containing the results of a computation. This computation is performed in a function which accepts an input object and returns the result object. The result object has a print method. This print method must print out the results, but in order to perform this operation I need the original input object. I cannot pass the input object at printing because it would violate the signature of the print function. One solution I am using right now is to have the result object hold a pointer to the original input object, but I don't like this dependency between the two, because the input object is mutable. How would you design for such case ?

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• 3D architecture app for Android or iPhone

  - by Manixate

  I want to make an app for 3D modeling on iPhone/Android. I cannot get the basic idea of how to get started. I have various options such as learning OpenGL ES, UDK or Unity3d but I want to create models(e.g architecture etc) in my app and then render them when user is finished modeling. I do not know if I am able to design models and then render them in the same app with various effects on the iPhone/Android using UDK or Unity3d. (Note: If you find this question unclear please ask, I may have skipped some vital information).

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