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• Compiz ( or even compositing in general) is not starting up when I login. Solution?

  - by ender.cc

  Whenever I log into a desktop environment, it doesn't seem that compositing is starting. Unity 2D works fine, but when I go to Unity 3D Compiz doesn't start up. I have to type compiz --replace & in terminal every time I login. Another example is when I log into a Cinnamon session, theming support is suddenly gone (although this may be a separate issue). If it helps im using the latest (295.40) NVIDIA drivers. EDIT: I am having exactly the same issue in both cases, upgrading from 11.10 and with a clean installation, in 32 and 64 bits. Related post.

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• How can I get my printer working after upgrading to (K)ubuntu 13.10?

  - by Sparhawk

  When using (K)ubuntu 13.04, my network printer worked fine. After upgrading to (K)ubuntu 13.10 today, I can no longer print. I get the error "The printer is not responding." I've tried to add the printer again, and it is automatically recognised. I can add it, and select it from print dialogue boxes, but I get the same error. Brother HL-2040, Kubuntu 13.10 (KDE 4.11.2) ==EDIT== I attempted connecting the printer directly with a USB cable, and this worked fine, so it's not a problem with drivers. (FWIW I'm using the recommended HL-2040 Foomatic/hl1250.) Further, it prints fine over the network from my wife's MacBook.

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• How to find a programming mentor?

  - by Dvole

  I decided to learn programming. I've been reading SO for few days, and I think I will start with C++, as I read some articles. I am aware of loops, arrays, program logic and objects a little and I need someone to look me over and help me with small questions I get when doing my first projects. So here is the question - where do I find such guy? I don't got any friends who program and all. EDIT: 2 years later, I am still looking for mentor. I did not actively code just started 3 months again. I work on Objective-C and iOS programming and game programming with Cocos2d. If you want to become my mentor, drop me a or comment.

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• The shortest licenses

  - by Darek Nedza

  What are the shortest licenses with aims for programmers/code. I have found only MIT that is page-long. What are other licenses that have approximately the same length or even shorter? Edit: Ok, length is not only criteria(I haven't expected one-line licenses, I have understaminate you people). I need easy to read and short licenses. It is meant for people who want to use my code not for lawyers who want to read long licenses. I am creating small codes to use by most people probably free of charge. I don't want useless information to be required, for example: what is X(for example: what is software, source code etc.) very specific information(for example: you can use it shop, opera, school... free of charge; but instead "use it everywhere but don't take money" Depending on type of code I would like to allow/disallow commercial usage.

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• Philosophy of scroll bars [closed]

  - by Parkhid

  Please suppose I want to design my own text editor . simply like notepad. Without using any richtextbox or other controls LIKE EDIT in C++. Main Handle is just a window in C++ or usercontrol in C#. The Question is here for scrolling option , how can I perform scrolling when user is typing. I mean vertical scrolling here . What is Philosophy of works of scroll bars in C++ windows or C# user controls ? Should I Clear the (Usercontrol or Window) When User reaches to end of (Usercontrol or Window) and then Put caret on start of (Usercontrol or Window) ? What about scrolling with thumb or hand scrolling ? How can I find the Text Position which scroll to ?

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• Is it a good idea for exams to be done on a computer?

  - by vemv

  In some colleges students are let to use an IDE and Internet and in mine you have to write down your solution in paper. As far as I know, it's pretty much impossible to make a correct non-trivial program on the first try. I'd be fine with no using computers if my teachers assessed my approach instead my code -literally-... that's not the case unfortunately. Which ones are more usual, 'written' or 'coded' exams? And which way is the most adequate? Edit - question title changed (it used to be Should students have the right to do exams using a computer?)

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• Workflow of sharing code for small teams

  - by Mihalis Bagos

  Problem is, we have developed a small CMS, that is different per implementation (currently). Of course development of this is never complete. Sometimes, we are working on more than one project that implements it (by copying-pasting the code files of the CMS to each project), and we add a new feature that we want to share on other projects as well (these can be small ones too, ie a custom ajax JSON controller - we use MVC) What we want to do is quickly and uniformly share the code with all other projects, via a version control system (or something similar), and generally organize the workflow as we know this isn't a very good workflow that we have. What would you suggest? Also, at the momment, the software we use is Visual Studio 2010, so we are strongly considering TFS, but even if we get it we still don't know the ideal workflow, or even if TFS supports what we want to do. Edit: Also note, we have specific implementations that have modifications over the CMS base that we want to KEEP only in the project area. (ie: a specific feature that we DONT want to share with the base CMS code)

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• How to force update-grub to use UUID?

  - by user276851

  When I run "update-grub", the file "grub.cfg" will contain lines like this. menuentry 'Ubuntu...' { ... linux /boot/vmlinuz... root=/dev/md124 ... ... } For the line of linux, is it possible to let it use UUID? Like, linux /boot/vmlinux... root=UUID=xxx Right now, every time after I do update-grub, I have to manually edit the line to use UUID. Otherwise, the boot will fail. Thanks for the help.

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• sprite group doesn't support indexing

  - by user3956

  I have a sprite group created with pygame.sprite.Group() (and add sprites to it with the add method) How would I retrieve the nth sprite in this group? Code like this does not work: mygroup = pygame.sprite.Group(mysprite01) print mygroup[n].rect It returns the error: group object does not support indexing. For the moment I'm using the following function: def getSpriteByPosition(position,group): for index,spr in enumerate(group): if (index == position): return spr return False Although working, it just doesn't seem right... Is there a cleaner way to do this? EDIT: I mention a "position" and index but it's not important actually, returning any single sprite from the group is enough

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• how to focus the desktop on unity

  - by user25119

  I'm using Ubuntu 11.10 (unity 4.24.0) and I can't seem to focus the desktop. For example, if I press Mod4+D, the window I had opened stays focused, but the image is see is my wallpaper. If I minimize all windows one by one, the last window I minimize is still focused when the desktop finally appears. This means I can't add desktop icons, nor use the mouse in it. I thought about reporting a bug, but everything works fine on other computers with the latest version of Ubuntu I've used, so I'm wondering about what's happening. Before, when I pressed Mod4+D, the Unity Top Menu would say "Desktop - File Edit ..." and I could use the desktop properly. Thanks in advance!

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• Why isn't my touchpad behaving like said in synclient?

  - by pirad

  I use a small skript to get my touchpad doing what it should: synclient LockedDrags=1 PalmDetect=1 PalmMinWidth=200 RightEdge=5340 VertTwoFingerScroll=1 HorizTwoFingerScroll=0 VertEdgeScroll=0 CoastingSpeed=0 LeftEdge=1800 TopEdge=1900 CircularScrolling=1 CircScrollDelta=0.2 CircScrollTrigger=3 TapButton1=1 TapButton3=3 TapButton2=2 & syndaemon -i 1.3 -d -t -R -k And when running synclient everything looks fine. But when I try to scoll, or tap nothing happens. Even after running killall syndaemon nothing happens. Has anybody an idea? I also have a trackpoint. edit: One problem is: It worked at some point on my system (wich I installed just yesterday= but then something changed and I don't know what and since then it doesn't work any more. edit2: Here's the xorg-log part about touchpads: http://paste.ubuntu.com/1042995/

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• Translating with context

  - by translate

  Is there a way I can see the result of my work while I am translating? It is difficult to translate without context. If I could see how my work will appear while I am doing it, translating is much easier. Edit from Oli: I understand this question to be from somebody who is translating an application. Translators often only have a list of phrases to translate without being able to see where those phrases are used in the app. This person wants a way to quickly locate a string inside an application so they can understand the phrase better and provide the best possible translation.

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• Unwanted systray icons

  - by Sparrowhawk4

  Is there any way to manage the icons in your systray? It's not highly important, but it annoys me having icons there that I don't want or use. It seems a little strange that it's so easy to customise just about everything else, but I can't for the life of me find a way to edit the systray. Maybe I'm just missing something? If there are specific ways of getting rid of each one, the I'd like to remove the Ubuntu One icon, the mail icon, and possibly the icon that says En1, and allows you to choose between UK and US English, unless that is important and I haven't realised it. I'm using Ubuntu 13.10.

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• 100% APC Fragmentation - Cacherouter & Pressflow install

  - by granttoth

  My APC cache has a 100% fragmentation. I'm not quite sure I understand what is going on here. For testing I jacked the available memory up to 512. After a day the total available free memory shows 73% but I still have 100% fragmentation. Would you gurus please look at my settings and offer your advice? Oh, I have read people suggest that I disable apc.stat when possible but when I do the site crashes. I am using the Pressflow build of Drupal 6 with the cacherouter module installed. Edit: (added screenshot) http://i.imgur.com/DqZEX.png

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• What to bring to a programming interview? [closed]

  - by ddrum

  I have just completed my Master's degree in Computer Science and have gotten my first job interview as a developer. I do not have much experience in large scale development projects, but I am hoping my university education counts for something. I am wondering, what materials should I bring that would impress my interviewers? What do most interviewers expect, especially from a new graduate? **Edit: The job interview went OK, except I forgot my pants. Thanks for all the great advice!

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• Hosting my own SVN repositories

  - by TheAdamGaskins

  I've been experimenting with Google Code and Sourceforge and the like, and am happy with what I've found. The main problem with them, is that you have to have your project be open source to use them, so anybody can edit them. So... is there some way I can have my own svn repositories on my own server? I have FTP access, cpanel, and all that. If it helps any: Operating system Linux cPanel Version 11.26.20 Architecture x86_64 MySQL version 5.0.91-community-log Apache version 2.2.13 PHP version 5.2.11 cPanel Pro 1.0 (RC1)

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• Splashing Liquid Using Cocos2d

  - by Maverick

  I am new to game development in iOS. My problem is that I want to give a water splash effect on the screen as like someone has just randomly thrown water from any corner of the screen. I will be grateful to know any tutorials, or libraries that wil help me achieving this effect. Thanks in advance. Edit: Sample Liquid Simulation I wanted to simulate the behavior like this IMAGE. Like a liquid is poured in glass. I hope it clears what I asked. Thanks for your precious time.

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• windows are moving slowly on ubuntu 11.10

  - by myildirim

  Video Card : ATI Mobility Radeon HD 3650 Therefore my video card ATI when i check system info Driver : VESA: M86 Experience : Fallback i checked compiz config manager and disable all effects insipite of this windows are moving slowly.It does not for all windows,for example when i use google chrome and scrool up/down there is no effect but when i move window to another position it moves slowly but when i use pdf reader when i scrool up or down it moves slowly.How can i solve this ? i use core 2 duo intel cpu and run ubuntu 11.10. Edit : The Solution : Upgrade kernel and then update all graphic card drivers.Now there is no problem .

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• OpenGL: Drawing to a texture

  - by Danran

  Well im just a bit stuck wondering how to draw an item to a texture. Specifically, i'm using; glDrawArrays(GL_LINE_STRIP, indices[0], indices.size()); Because what i'm drawing via the above function updates every-frame, i'm just totally not sure how to go about drawing what i have to a texture. Any help is greatly appreciated! Edit: Well unfortunately my graphics card doesn't support FrameBuffer Objects :/. So i've been trying to get the copy contents from backbuffer method working. Here's what i currently have; http://pastebin.com/dJpPt6Pd And sadly all i get is a white square. Its probably something stupid that i'm doing wrong. Just unsure what it could be?

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• ubuntu 12.04 sound not working in applications

  - by user109887

  I run Ubuntu on a DELL Vostro 3500 laptop. Everything was working perfectly since this morning, after an update... I can't play any multimedia sound anymore, that includes youtube and others, mp3 in Rythmbox, sound of video in VLC. I can see my device in the setting window and I can play tests sound, but nothing else. Any idea? EDIT: I'm switching very often from to HDMI output, which is deconnected right now. I've tried running VLC, and in the audio menu, you can choose the output so now I can listen to music via VLC but not with other programs. Looks like ubuntu is not totally switching the audio device after unplugging the HDMI cable. Is there any command line which can do so?

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• DualBoot 32Win & 64Mac from Live USB +Persistance

  - by josephsmendoza

  So I have a 32 bit Live USB with persistance that I use to write code, cause that's just how I roll. I can boot it onto my school computers(32 bit Win) no problem, but obviously not my Mac (2007 iMac, 64 Bit). Currently I use VMWare Fusion 6 Pro and a Plop Linux image to use the usb at home, but I can only get 900mb of ram for my VM. I was hoping to make a Live USB that can boot 32 bit and 64 bit for mac, with a shared persistance file, this way I can use my computer's full 2GB. Also, I'm not allowed edit any part of this Mac. Do Not reply telling me it's impossible. Please only solutions. Thank you, and have a unicorntastic day!

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• Not Found Apadche2

  - by user285814

  i have installed apache2, actual php version, mysql server and vsftp on my new ubuntu server. I also installed wordpress and gave the user www-data all rights for /var/www/* and put it to 755. I hooked the Domain to the server with * and @ a-record. Now, everytime when i open a Page, it says 404 file not found on server. i dont know how to fix this. can you help me? Edit: I think its because mod_rewrite. i installed mod_rewrite with: sudo a2enmod rewrite sudo service apache2 restart but it still doesnt work.

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• How much will be difference between building php sites with SVN and not using it

  - by user1315279

  I have been developing PHP sites for about 5 years but never used SVN. But i am going to start in new company and they use SVN. Tomorrow is my first day. I want to know that how site developement differes with SVN. WITHOUT SVN I make test account on Linux server via cpanel I make database tables Put all files in /home/user/public_html and i use PHP designer as IDE to edit files and i can see the results on test.mydomain.com I just want to know how much will be the difference with SVN. I mean what will be the steps

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• Shutdown issues on my Dell XPS M1530

  - by CppLearner

  On my Dell XPS M1530 lapttop, I am facing issues with shut-down option after upgrading to 12.04 LTS from 11.10. Sometimes it shutdowns "cleanly". But other times everything goes down but I can still see the power LED glowing (even after removing the power cord). If I keep it like that laptop temperature increases. So finally I opt for "hard shut-down" (i.e. pressing the power button on). Any thoughts what is happening here?. Edit: I just found this link to already reported bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/987933

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• Ubuntu server and services

  - by Vicenç Gascó

  I've been using Linux+Plesk Virtual Server as a web server for a while, but I want to give a try on doing it manually, so my question is: I'll have a server which is: 80GB HDD, 4GB RAM, 1TB Bandwith, 1 Dedicated IP. And I use the following things on my Virtual nowadays: Mail server DNS server Apache + PHP 5.5 + MySQL FTP SSH My question is, without Plesk, can I achieve manually all those functionalities -know that I am not a terminal pro-, actually upgrading some of them to look like that with ubuntu server?: Mail server (with a nice webmail included) DNS server nginx + PHP 5.5 + MySQL + MongoDB FTP + SFTP SSH GIT Server Which ubuntu server should I chose? [EDIT] I almost forgot, I'd like to know how much Bandwith and CPU is using each of my webapps (one per domain usually), and the overall (not just from the webapps, but also mail, dns, etc...) ... usually Plesk does that for me, and I don't know how to measure that without it!

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