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• is there a bug with restart in edubuntu 12.04

  - by Ket

  After a clean install of edubuntu 12.04 on an Acer AO531-h netbook, restart doesn't work. The process starts normally but just before it shuts down the netbook freezes and I have to force shut down. The command "sudo reboot" has the same problem. I have no issues with shut down, only with restart. I'm absolute beginner. Netbook specs: Acer, intel atom CPU N270 @1.60GHz, 1.05 GHz 0.98GB RAM Dual booting with windows xp. No problems with windows.

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• java framework for a web wizard

  - by snippl

  I'd like to create a web wizard or a wizard on/within a website. I know there are several java frameworks for wizards but there is none for the web in particular. If I search for a framework, I always get wizards to create a website, applet, servlet and what not. But never how to create such a wizard itself. So the question(s) is: What framework should I use to create a web wizard? And what frameworks are there? The wizard will be the visualisation for a BPEL Process deployment on a apache ode. I thought a webapp would be an easy way because the apache is running anyway. I'm not bound to that, perhaps someone has a better idea.

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• Where should the database and mail parameters be stored in a Symfony2 app?

  - by Songo

  In the default folder structure for a Symfony2 project the database and mail server credentials are stored in parameters.yml file inside ProjectRoot/app/config/parameters.yml with these default values: parameters: database_driver: pdo_mysql database_host: 127.0.0.1 database_port: null database_name: symfony database_user: root database_password: null mailer_transport: smtp mailer_host: 127.0.0.1 mailer_user: null mailer_password: null locale: en secret: ThisTokenIsNotSoSecretChangeIt During development we change these parameters to the development database and mail servers. This file is checked into the source code repository. The problem is when we want to deploy to the production server. We are thinking about automating the deployment process by checking out the project from git and deploy it to the production server. The thing is that our project manager has to manually update these parameters after each update. The production database and mail servers parameters are confidential and only our project manager knows them. I need a way to automate this step and suggestion on where to store the production parameters until they are applied?

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• Folding at home refusing connection?

  - by user49191

  I am having a slight problem. I love contributing to folding at home, if some of you dont know what it is, it's a program that downloads work from the stanford university servers, has your computer process it (takes about 12 hours for 1 assignment depending on the processor, and then uploads it back. The problem with mine is that when I run FAHControl in terminal, it says Error 111 connection refused. This doesnt happen when i run folding at home on windows. Can someone tell me how to fix this? Thanks.

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• What's the progress on Haskell records?

  - by mmh

  Recently I stumbled once again on the issues of Haskells records, in particular the uniqueness of field names (it's a pain ...) I already read A proposal for records in Haskell from SPJ and Greg Morrisett but it's last update was 2003. Another paper Lightweight Extensible Records for Haskell from SPJ and Mark Jones is even older: It's from a Haskell workshop in 1999. Now I wonder if the process of giving Haskell new records made any progress. Does anybody know something about it or can point me to some further reading ?

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• Can't install gimp-plugin-registry

  - by Uri Herrera

  I tried to install the Ubuntu Studio Graphics meta-package, however it didn't install correctly.The package gimp-plugin-registry just won`t install, i tried the one in the Software center and the one on the WebUp8 PPA neither package works. The following NEW packages will be installed: gimp-plugin-registry 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 0B/1395kB of archives. After this operation, 3592kB of additional disk space will be used. (Reading database ... 402557 files and directories currently installed.) Unpacking gimp-plugin-registry (from .../gimp-plugin-registry_3.2-1_i386.deb) ... dpkg: error processing /var/cache/apt/archives/gimp-plugin-registry_3.2-1_i386.deb (- -unpack): trying to overwrite '/usr/lib/gimp/2.0/plug-ins/file-xmc', which is also in package gimp 2.7.3-2010110501~mm dpkg-deb: subprocess paste killed by signal (Broken pipe) Errors were encountered while processing: /var/cache/apt/archives/gimp-plugin-registry_3.2-1_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1)

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• Physics from other games

  - by Carlosrdz1

  I'm making a platform engine with XNA Game Studio, and I've solved almost everything about colliding stuff. But now, I'm searching for good physics for the player, I'm trying to emulate characters from other games like Mario from Super Mario World, or MegaMan X... do you know a website or something, where the physics from that games are revealed? I remember seen a page with something like that. Or what's the process you think is the best to emulate physics from other games? Just trial and error? Thank you.

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• Do PHP-FPM (and other PHP handlers) need execute permissions on the PHP files they're serving?

  - by Andrew Cheong

  I read in a post at Server Fault that PHP-FPM needs execute permissions. However, the answer in When creating a website, what permissions and directory structure? only grants read and write permissions to PHP-FPM. Maybe I don't quite understand how PHP handlers (or CGI in general) work, but the two claims seem contradictory to me. As I understand, when Apache / Nginx gets a request for foobar.php, it "passes" the file to an appropriate handler. That is, I imagine it's as if www-root (or apache or whomever the webserver's running as) were to run some command, /usr/sbin/php-fpm foobar.php Actually, no, that's naive, I just realized. PHP-FPM must be a running instance (if it's to be performant, and cache, etc.), so probably PHP-FPM is just being told, "Hey, quick, process this file for me!" In either case, I don't see why execute permissions are necessary. It's not like the webserver needs to literally execute the file, i.e. ./foobar.php Is the Server Fault answer simply mistaken?

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• Ubuntu 12.04 boot freezes

  - by Lajos Soukup

  I installed win7 on one of my machines. It works without any problem. Now I can not install Ubuntu 12.04 (11.10, 11.04) because the installation process stops in a very early stage: I can see that ISOLinux was loaded, then I can see some very simple icons, then I can see text messages of the kernel. The last message I can see: [6.177983] sr 5:0:0:0: attached scsi general ss1 type 5 At that point the system stops. I tried different versions (11.04) , I disabled, and then disconnected the hdd, but the same problem occured independently from my actions. I can boot a gparted live cd, but that system can not see my hdd. On the other hand, I can boot the installation cd of the latest stable Debian distribution without any problem, but I would prefer to use Ubuntu, because I use that distribution on all of our machines.s Configuration: Asus P8H61-MLE motheboard, Gigabyte GTS 450, Intel i5, 4gb ram, wd 1T sata hdd Any idea? Best regards, Lajos

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• What could be a reason for cross-platform server applications developer to make his app work in multiple processes?

  - by Kabumbus

  So we consider a server app development - heavily loaded with messing with big data streams.An app will be running on one powerful server. a server app shall be developed in form of crossplatform application - so to work on Windows, Mac OS X and Linux. So same code many platforms for standing alone server architecture. We wonder what benefits does distributing applications not only over threads but over processes as wall would bring to programmers and to server end users and why? Some people sad to me that even having 48 cores, 4 process threads would be shared via OS throe all cores... is it true BTW?

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• Seeking advice on system documentation

  - by Shadders

  I have a rating engine (it is basically an algorithm) which when I started had no formal documentation. We have created a functional specification/decomposition which is our business level document but now I need something more technical (a technical specification). What I am struggling to understand is what that document looks like, what format it should be in and to what level of detail we should go into. We are in the process of commenting all of the code. We also have a rough document called a Blueprint which reflects the flow of the model and is written in pseudo code. Is the combination of this blueprint and the model comments sufficient as a Technical Specification?

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• open source database project

  - by Jeff V

  What is the best way to build an open source database? I would like to build a database of all vehicles and the related maintenance information (i.e Oil Weight, Quantity, Tire Pressure, Windshield wipers etc). Currently this information is fragmented or just not put on line in an open way. Once collection began I would want to import into a DB and then be able to distribute freely. Is there a process (site or group) that I can start gathering this information in a reliable and verifiable way? Is there any issues that I should watch out for?

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• Custom mesh format - yea or nay?

  - by Electro

  In the process of writing my game prototype, I have found the OBJ format to be insufficient for my needs - it does not support any sort of animation, it doesn't support triangle strips (I'm targeting my ancient hardware). MD2 wouldn't fit the bill because it doesn't have support for named model pieces. MD3 would probably work, but like OBJ, it doesn't have support for triangle strips. Considering the limitations of the formats above, I've come to the conclusion that it may be necessary to write my own format to accommodate my requirements, but that feels like reinventing the wheel. So, I need a format which can specify indexed tri-strips, supports textures, UV-mapping, collision data, can have multiple named segments and supports animations (have I forgotten anything?). Is there any format like that which already exists, or do I have to write my own?

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• gpg passcode error

  - by shantanu

  I just created my gpg key using developer.ubuntu.com packaging page's documentation and also upload the public key in key server. When i import the key into launchpad it sent me an encrypted message. Now i give a command to decrypt the message gpg -d launchpad.txt it asked for a passcode. I gave one which i used to create gpg key. but it shows error again again. I repeat the process(gpg creation) again but stuck on .... passcode(decryption). What is the problem?

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• Prevent shutdown when rsnapshot is running

  - by highsciguy

  Since shutdowns during rsnapshot operation will lead to inconsistent/partial backups, I wonder how to delay the system shutdown while rsnapshot is active. The task is complicated by the fact that I need a solution which is compatible with non-expert users. I.e. I need to tell reliably to the user that he needs to wait until the process is finished and not to do a hard reset. Once this is the case shutdown should continue. A possible solution could be to replace the action of the window managers (mostly KDE) shutdown/restart/hibernate buttons by a script which first checks if rsync is active and shows a message if this is the case. But I do not know if this is possible in KDE.

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• At what point should data be sent back to server?

  - by whamsicore

  A good example would be the stackexchange "rate" button. When a post is upvoted the arrow changes color immediately. However there is a grace period for one to edit one's vote decision (oops! voted by mistake?). Is the upvote action processed immediately or does is only process after a set time period, or when the user leaves the page? How exactly is this rating processed? What is the standard for handling dynamic page edits (e.g. stackexchange rating, facebook posts?)

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• ffmpeg: cut multiple input files with seeking to one output file

  - by Josef Kufner

  I have list of video files (loaded from database), each with start and end time of requested interval: # file begin end v1.mp4 1:01 2:01 v2.mp4 3:02 3:32 v3.mp4 2:03 5:23 And I need to create single video file containing these intervals: [0:00]---v1---[2:00]---v2---[2:30]---v3---[5:50] I preffer usig ffmpeg, since it is installed on server. Caller program is written in PHP. It is easy to cut one input to one output (argument escaping removed for clarity): exec("ffmpeg -ss $begin -i $input_file -ss $begin -c copy $output_file"); I there any easier way than executing ffmpeg for each interval and then execute it once more to concatenate prepared clips together? I really do not like to have a lot of temporary files or dealing with complex process handling.

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• How to show other characters in online 2D rpg

  - by Loligans

  I have Player 1 and Player 2 I am using Json to send and retrieve player data between the client and the server, but when another player logs in, and is in the same map, how would I send that data to both players to update the graphics engine to show there are 2 Players on the map? About my game it is a 2D RPG tile based game it is 24x15 Tiles it is Real time Action it should interact anywhere between 10-150 ping players interact with each other when in the same map and can see each other moving around the game world is persistent, and is saved when the server shuts down Right now the server just sends the player Only their information which is inside a Json Object Here is an example of what I am talking about If you notice there are 2 separate characters in 2 separate clients, but they are running on the same server. I am trying to get them to show up on both clients, but I don't know how I should accomplish this. Should I send it as an added value in the Json object? Also what is the name of this process so I can look it up and find more info on it?

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• Slow wifi after upgrading kubuntu 13.04 to 13.10

  - by RedCow22

  After upgrading from kubuntu 13.04 to 13.10 suddenly my wifi connection is very slow. Ping times are varying from 200 up to 1500 ms to www.google.nl. When I connect my ethernet cable they drop to normal times like 8 or 9 ms. Anyone experiencing the same problem or know a solution I can try? During the upgrade process a few times they asked whether I wanted to keep or replace some kind of configuration file. I'm not sure anymore which file it was, but maybe this has something to do with it. Before the upgrade both wired and wireless connection worked perfect.

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• Looking for Non Hosted Audio & Video Podcasting Solution for Church Websites

  - by motboys

  I am looking for a solution that will do the following: User uploads audio and/or video files with title, desc. image etc Solution embeds info into ID3 tags Solution generates RSS feed Solution embeds new content in our website Content on website is searchable This is for a couple of church websites I manage. I am looking for the ability to do the above with a sermon mp3 and also a video. At the moment we are doing it with multiple steps / people involved and I want to automate the process. I can't seem to find a solution that does all of the above. Thank you!

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• What is the term for a 'decoy' feature or intentional bug?

  - by Freiheit

  I have forgotten a slang programming term. This thing is an intentional bug or a decoy feature used as a distraction. An example usage, "Hey Bob, QA is doing a review today. Put a $THING into the module so they actually have a problem to find". This can be used negatively, to have a very obvious intentional flaw to discover as a distraction from a real problem. This can also be used positively. Its like how you always let rescue dogs 'find' a victim when searching a disaster area. It can also be used to verify that a QA process is actually catching flaws. What is the term I am looking for?

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• Ask the Readers: How Do You Set Up a Novice-Proof Computer?

  - by Jason Fitzpatrick

  You’re into technology, you like tweaking and tinkering with computers, and, most importantly, you know how to keep your computer from turning into a virus-laden and fiery wreck. What about the rest of your family and friends? How do you set up a novice-proof computer to keep them secure, updated, and happy? It’s no small task protecting a computer from an inexperienced user, but for the benefit of both the novice and the innocent computer it’s an important undertaking. This week we want to hear all about your tips, tricks, and techniques for configuring the computers of your friends and relatives to save them from themselves (and keep their computer running smoothly in the process). Sound off in the comments with your tricks and check back in on Friday for the What You Said roundup to add see how your fellow readers get the job done. How Hackers Can Disguise Malicious Programs With Fake File Extensions Can Dust Actually Damage My Computer? What To Do If You Get a Virus on Your Computer

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• Turn Your Browser Pane into a Game of Katamari Damacy

  - by Jason Fitzpatrick

  If you’re a fan of Katamari Damacy, a quirky and fun Japanese puzzle game made popular on the PlayStation, you’ll love this Javas script hack that turns your browser pane and its contents into a giant HTML-collecting game of Katamari Damacy. Katamari Damacy, for the unfamiliar, is a addictive game based on the premise that a galactic prince is on a mission to rebuild stars, constellations, and moons accidentally destroyed by his father. You roll around and collect objects (making yourself an increasingly larger ball in the process). This script hack puts a ball on your web browser pane (works best in Chrome) that you can roll around collecting elements from the web page. At first you can only grab links but as you grow you can grab increasingly large objects like photo elements off the page. It doesn’t have the sophisticated graphics of the Playstation version, of course, nor the detailed back story, but it’s a clever little hack that is sure to delight fans of Katamari Damacy. Katamari Hack [KatHack] Internet Explorer 9 Released: Here’s What You Need To KnowHTG Explains: How Does Email Work?How To Make a Youtube Video Into an Animated GIF

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• Nameservers and migrating a VPS

  - by MeltingDog

  I am primarily a front end developer who has been tasked with upgrading my companies VPS. As far as I understand, this is just the process of obtaining a new VPS with WHM/CPanel and then migrating the existing accounts over to the new VPS, testing the sites out, then pointing the DNS to the new nameserver records. That sounds pretty straightforward. What I am having trouble understanding is how to set up the new nameservers on the new VPS. How do I obtain/establish the new nameserver records for the new, blank VPS?

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• Scheme of work contract

  - by Tommy

  I'm in the process of setting up a (one man) company and got to a item on my list "contracts and insurance". I will primary be offering custom software development but may also offer some "open source solutions", install, configure / manage e.t.c. I'm not sure how to approach a contract with a potential customer. I want to be flexible and offer the customer rights over the product (when not using open source of course) but I obviously want / need to be able to reuse code, already written and any future work. Is this possible or is it just something that people do but strictly they shouldn't? Is there a standard freelancing / contacting developer agreement? Going to a lawyer I'm sure is an answer but a very expensive one! If not do you end up with a fresh contract with each job / client and lots of trips to solicitors?

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