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• Ubuntu 10.10 crashing on initialization, how to solve?

  - by Tom Brito

  Yesterday I installed Ubuntu 10.10, and on the first login it got frozen, so I powered off and on the computer, and it started well. Now, during the updates it got frozen again, and after every login again. I can't even change to the command line with ctrl+f1 or f2. Is there a way to get some log information on the initialization? I have no idea what can be causing this. Previously I was using Ubuntu 9.04, which is now not receiving new updates. Versions 10.04 and 9.10 behavior the same as 10.10, and version 11.04 crashes much on many situations. So, is there a way to get some log information on the initialization to help find what's wrong?

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• Install vim offline

  - by rosemary

  I have Ubuntu 12.04.02 desktop in my college Lab of around 15 pcs with no internet connection. I used to install packages : sudo apt-get install vim It was just fine. But, now I want to install vim locally(i.e.,using a pendrive or CD drive). Where and how can I accomplish this,as I am new to it. Through googling, I could get some sites offering packages, but I have merely any idea on how to carry on: https://launchpad.net/ubuntu/precise/+source/vim http://www.ubuntuupdates.org/package/core/precise/main/base/vim http://pkgs.org/ubuntu-12.04/ubuntu-main-i386/vim-gnome_7.3.429-2ubuntu2_i386.deb.html What should I exactly download and where to store it in my ubuntu machine and run commands to properly install vim offline? Any word of advice is appreciated!

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• Is it a bad practice to include all the enums in one file and use it in multiple classes?

  - by Bugster

  I'm an aspiring game developer, I work on occasional indie games, and for a while I've been doing something which seemed like a bad practice at first, but I really want to get an answer from some experienced programmers here. Let's say I have a file called enumList.h where I declare all the enums I want to use in my game: // enumList.h enum materials_t { WOOD, STONE, ETC }; enum entity_t { PLAYER, MONSTER }; enum map_t { 2D, 3D }; // and so on. // Tile.h #include "enumList.h" #include <vector> class tile { // stuff }; The main idea is that I declare all enums in the game in 1 file, and then import that file when I need to use a certain enum from it, rather than declaring it in the file where I need to use it. I do this because it makes things clean, I can access every enum in 1 place rather than having pages openned solely for accessing one enum. Is this a bad practice and can it affect performance in any way?

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• What are deferred callbacks?

  - by tentimes

  I understand the idea of a callback, where I pass a function into another function and that function then uses the supplied function at will. I am struggling to understand deferred callbacks, even after googling it. Could someone provide a simple explanation please? I program in Ruby, but also know C/C++ a bit, but most of all I was a experienced assembly language programmer. So I am wondering is it a bit like a stack of callback addresses that get pop'd? I am hoping to learn jquery or node.js and these deferred callbacks seem integral to both. I understand basic threading principles (though mutex object makes my head hurt ;)

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• How do you maintain content size vs. content quality in an application?

  - by PeterK

  I am developing my first Cocos2d iPhone/iPad game that includes quite a few sprites, I would need approximately 80 different. As this is for both normal and HD displays I have 2x of each sprite. I am using TexturePacker to optimize the thing. I would like to ask if there are any rules-of-thumb, tricks, ideas etc. to adjust to in regards to size of content, quality and how you maintain high-quality HD-based graphics due to its size vs. the device memory sizes? Also, is it a good idea to only have one copy of the sprites and scale it using code?

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• Where have the Direct3D 11 tutorials on MSDN have gone?

  - by Cam Jackson

  I've had this tutorial bookmarked for ages. I've just decided to give DX11 a real go, so I've gone through that tutorial, but I can't find where the next one in the series is! There are no links from that page to either the next in the series, or back up to the table of contents that lists all of the tutorials. These are just companion tutorials to the samples that come with the SDK, but I find them very helpful. Searching MSDN from google and the MSDN Bing search box has turned up nothing, it's like they've removed all links to these tutorials, but the pages are still there if you have the URLs. Unfortunately, MSDN URLs are akin to youtube URLs, so I can't just guess the URL of the next tutorial. Anyone have any idea what happened to these tutorials, or how I can find the others?

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• Chrome dispay Glich when GPU acc. on

  - by user289172

  Hy Everyone! I have some graphics glich when enable gpu acc. in chrome. If i disable acceleraion it fix the glich but, in full HD most of flash videos frame rate drop above frogs a**, so very slow... :) Any idea, what can i do? I Upload 2 pics from glich. My hardware: CM Hyper TX 3 on AMD A5300 with HD 7480D 6 GB RAM I use official AMD driver from amd.com, Ubuntu 14.04(I upgraded from 12.04, in Ubuntu 12, same glitch with old drivers.) I reinstalld x.org completly and purge all config files, but this didnt resolve the problem. If i use other drivers, i have some other problem ie.:nor automatic resolution chnge when connect new monitor, false refreshrate for displays and etc. Thanks for the help! http://i.stack.imgur.com/9PkrK.jpg http://i.stack.imgur.com/AMS22.jpg

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• Ubuntu 13.04 ERROR: /etc/apt/sources.list not found

  - by Richard Riley

  So, I tried uninstalling the LAMP stack I had following the Ubuntu documentation for it. I also manually removed dbconfig-common. Now, I'm unable to run apt-get update. When I do, I get the error message: E: The method driver /usr/lib/apt/methods/htp could not be found. After some digging, I've discovered that I no longer even have an /etc/apt/sources.list file. Also, I've received an error, when trying to run: sudo tasksel install lamp-server That aptitude can not be found. Does anyone have an idea of what I can do? I'm not able to find any documentation online that works - all the documentation out there is dated and no longer (or will not) work with 13.04. I followed this link previously prior to posting my question and it did not work for me: How do I fix a "E: The method driver /usr/lib/apt/methods/http could not be found." error?

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• Building a Java CMS - What Existing Product Should I Use?

  - by walnutmon

  I'm a Java developer and in need of a CMS. I've spent a lot of time reading about, and tinkering with Liferay but am concerned that it doesn't cover two of my three major concerns I need to have many sites with individual domains HTML/CSS designers need to be able to design the website templates, look and feel, and layouts in their own tools without having to worry about writing scripts Site and page building APIs must be understandable so that a custom builder interface can be created and harness the CMS as opposed to hacking it Liferay nails the first bullet point, but the second two appear to be unsolved. Does anyone have experience with a Java CMS that does all three? Or have any idea how to approach the problem if none exists? Has someone has used a Java CMS and has been able to add this functionality give some insight?

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• How can be data oriented programming applied for GUI system?

  - by Miro

  I've just learned basics of Data oriented programming design, but I'm not very familiar with that yet. I've also read Pitfalls of Object Oriented Programming GCAP 09. It seems that data oriented programming is much better idea for games, than OOP. I'm just creating my own GUI system and it's completely OOP. I'm thinking if is data oriented programming design applicable for structured things like GUI. The main problem I see is that every type widget has different data, so I can hardly group them into arrays. Also every type of widget renders differently so I still need to call virtual functions.

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• Is there any advantage/disadvantage to using robots.txt to disallow access to legal pages such as terms, privacy policy, etc.?

  - by CaptainCodeman

  As I understand, having repetitive content is a detriment to search engine placement. Given that many websites that use similar or even identical "Terms and Conditions" and "Privacy Policy" pages due to similar legal wording or due to copy & pasting from the same source, would it be a good idea to disallow access to these pages via robots.txt, in order to avoid being penalized for "non-original content"? Or, on the contrary, could the search engines identify this as circumvention and penalize the site for trying to hide content? Or does it not matter?

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• 525 m nvidia grapic card is not work in Linux

  - by mayank khandelwal

  i have dell dell inspiron 15r and company give the windows 7 64 bit os. i have 1GB 525m nvidia graphic card which work in windows very well but when i install the ubuntu 10.10 then graphic card is not work. ubuntu 10.10 give that message that i have nvidia graphic card which not active you want to active. when i say ok then its download driver from the net and then install it when restart computer then graphic terminal is not working other terminal is work well. i have not idea why that happen plz help me ?

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• Is it safe to configure "Shutdown" on "When laptop lid is closed" ?

  - by Takkat

  To setup a laptop owned by a complete PC novice any settings that may become hard to tackle remotely need to be avoided. The laptop will be administrated via SSH. One thing in my list are problems arising from improper wake-ups from suspend or hibernate as they may also affect network accessibility. This is why I thought setting up power management to "shutdown" on closing the laptop lid could be a good idea. However I am not sure if this is a safe way to do. What problems in addition to software not closing properly (and thus not saving their data) could I be faced if I proceeded as planned?

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• Optimization of a Hybrid Pagination Scheme

  - by Kaustubh Karkare

  I'm working on a Web Application using node.js in which I'm building a partial copy of the database on the client-side to decrease the load on my server. Right now, I have a function like this (expressed as python-style pseudocode, but implemented in JavaScript): get(table_name,primary_key): if primary_key in cache[table_name]: return cache[table_name][primary_key] else: x = get_data_from_server(table_name,primary_key) # socket.io return cache[table_name][primary_key] = x While this scheme works perfectly well for caching individual rows, I'd like to extend it to support the creation of paginated tables ordered according to the primary_key, and loading additional data using the above function for only the current and possibly the adjacent pages. Now, I don't want to keep the list of primary keys on the server to be retrieved every time I need to change the page (which, for reasons beyond the scope here, will be very frequent), and keeping it on the client side, subject to real-time create/delete events from the server, doesn't seem that good an idea, even after compression (using ranges, instead of individual values). What is the best way to calculate which items are to be displayed on a random page, minimizing the space requirements & the need for communication with the server?

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• Problem with WindowsXp on VirtualBox in 12.10

  - by umpirsky

  When I try to start it I get: Failed to open a session for the virtual machine WindowsXp. The virtual machine 'WindowsXp' has terminated unexpectedly during startup with exit code 1. Result Code: NS_ERROR_FAILURE (0x80004005) Component: Machine Interface: IMachine {5eaa9319-62fc-4b0a-843c-0cb1940f8a91} and in another dialog: Kernel driver not installed (rc=-1908) The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. Please reinstall the kernel module by executing '/etc/init.d/vboxdrv setup' as root. If it is available in your distribution, you should install the DKMS package first. This package keeps track of Linux kernel changes and recompiles the vboxdrv kernel module if necessary. When I try to run: $ sudo /etc/init.d/vboxdrv setup [sudo] password for umpirsky: sudo: /etc/init.d/vboxdrv: command not found Any idea?

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• apache2 server returns (400) syntax error

  - by Thomas E

  There are 900 paths in the googles index to our homepage containing illegal characters. Example: http://www.seriesam.com/filmaffisch/TC%4NK Note the character "%4N". I have no idea where they come from, but would like to update google index with a correct URL using "canonical" in the html code. But the problem is our apache2 server immediately sends a 400 error if you click the link above. How can I configure apache2 not to give an error code, but instead treat the link above as "correct"? Maybe replacing the char %4N with nothing.

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• Google Analytics: Why does "/" appear in goal funnel visualization?

  - by Lauren

  This is the goal funnel for checkout. Does anyone have any idea where the "/" is coming from? The cart page is at site: game on glove dot com (I don't want this stackoverflow page being indexed in google particularly well). Go to the site, click on the order button, make your selection, and click the button to enter the cart (it resolves to /Cart and /Shop-Cart). I believe I used the regular expression matching to match "cart". So why the "/" (I don't know what is causing the home page to reload when users are on the Cart page within a Colorbox lightbox where the only way back to home or "/" is to hit the exit button in the top right of the lightbox)? Here's my one guess for the former question but it doesn't seem likely: See the "check out with paypal" button? If you hovered over it, it does default to the home page which is what might be the "/"... but it really redirects the user to the paypal.com page so it shouldn't also load the home page.

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• Leading a not-so-good team

  - by vinoth

  How would you manage if you are allocated a team of 5 with, say, 4 incompetent programmers and you are asked to lead? Obviously you can't code for the 4 guys (you can, but that is not a good idea. At least I burned out doing that). Have you come across these kind of situations? Edit: I think I sounded rude by choosing a wrong word (incompetent) to address my problem. To rephrase the question, how do you deal with people who do not complete assigned tasks (for whatever reasons [ranging from incompetence to 'I don't care' stuff])?

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• 12.04 indicates filesystem check on next boot, but never does one

  - by pcm

  Just installed 12.04 32 bit on my machine, with 3 drives. When I open a terminal window or ssh in remotely, I see: Welcome to Ubuntu 12.04.1 LTS (GNU/Linux 3.2.0-29-generic-pae i686)  * Documentation:  https://help.ubuntu.com/ *** /dev/sda1 will be checked for errors at next reboot *** *** /dev/sda2 will be checked for errors at next reboot *** *** /dev/sdg1 will be checked for errors at next reboot *** Last login: Fri Aug 31 08:15:41 2012 from .... However, if I reboot, I never see it doing a disk check on boot up, like I used to see with 10.10. Note, after install, I was not seeing the grub menu on boot. I made a ISO disk with BootRepair and now I get the normal grub menu. Any idea as to why the disk check is not happening on boot (I know I can boot a Live CD and then check the disk - I just want the check on boot working)?

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• C# XNA Make rendered screen a texture2d

  - by redcodefinal

  I am working on a cool little city generator which makes cities in the isometric perspective. However, a problem arose where if the grid size was over a certain limit it would have awful lag. I found the main problem to be in the draw method. So I took the precautionary step of rendering only items that were onscreen. This fixed the lag but, not by much. The idea I have is to render the frame once and take a snapshot. Then, display that as a texture2d on screen. This way I don't have to render 1,000,000 objects every frame since they don't change anyways. TL;DR - I want to Take a snapshot of an already rendered frame Turn it into a Texture2D Render that to the screen instead of all the objects. Any help appreciated.

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• What are good ways to find collaborators for a coding weekend?

  - by tarrasch

  Not sure if this belongs here, feel free to push it somewhere else if needed. When i was at university we would sometimes come together into a room full of beer and fast food and crank out software in a weekend. Unfortunately the group has kind of split up and its just not possible any more. My question is now: Where can i find like-minded people on the Internet that would like to do something like this? I have an idea what i wanted to do next, but of course other people have ideas too.

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• Why doesn't cron complete my script?

  - by brickinthewall

  I have a backup script (rsync via ssh) which is run by cron (configured in /etc/crontab) 0 2 * * * root /bin/bash --login /opt/aebackup/sshbackup.sh If I run it as logged in root like following it runs prefectly fine. root@server:~# /opt/aebackup/sshbackup.sh If I run it via cron it would just stop after a while (not always on the same task in the script.. it seems pretty random, like the process is killed at some point randomly) Does anyone have an idea why my cron would do that? thanks for anything... I'm desperate!

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• wordpress hosting uk help [closed]

  - by Neenee Kale

  Hi so i am planning to develop a website (student information system) for my final year project. I am going to use wordpress and i am a beginner so i just found out i have to purchase a host if i am not going to use wordpress.com as my host. which i dont want to as there is loads of limitations if i want to build a website. so therefore i want to purchase my own host which is cheap and i pay for a year i the most i will pay is 50 pounds. could someone please recommend me a very good uk based word press host which will allow me to build a information system where people will be able to login and enter their details etc. I have researched many hosts by I need someone to recommend me what features are important to build a information system like this. I am a beginner in wordpress so therefore i dont have much idea on hostings.. thank you

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• What's typical in terms of royalties? [closed]

  - by Matt Phillips

  I'm a developer negotiating compensation for a commercialized version of some data analysis software I wrote (see my profile if you like). This is a completely new experience for me. I want per-unit royalties, but I don't have the slightest idea what the standard amount is. I also want to be compensated for my time, so that's an upfront R&D cost for the company I'm negotiating with, but distribution cost to them is presumably virtually nothing once it's out there. But then there's support costs. What sorts of deals have you folks negotiated?

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• How do I get "ruby" to do what "ruby1.9.1" does?

  - by Daniel

  I want to start off by saying... I really don't need to be using 1.9.2. I understand that you don't ever, ever use Python 3.2, so if the common advice is that I should use 1.8, I'll do that. But don't tell me to do that because it's easier. Whatever version I should be using, though, the question is still relevant: What's a good way to make one command do another command? (I suppose I could write a c program to launch ruby1.9.1, call the executable ruby, and put it in my bin, but this seems like less than a good idea)

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