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• Screen dims on opening certain applications on Macbook

  - by yayu

  I have ubuntu 11.10 installed on an old 2008 macbook. There is an issue of screen dimming that I didnt find anywhere else on the forums. The issue is that the screen is dimmed when I open certain applications (Firefox, Software Center) and this cannot be readjusted by the physical brightness buttons on the keyboard. I tried a bunch of things on the barely barely visible screen, and had no choice but to restart. This has happened everytime. Does anyone know how to solve this?

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• How can I get a writable path on the iPhone?

  - by Kendall Helmstetter Gelner

  I am posting this question because I had a complete answer for this written out for another post, when I found it did not apply to the original but I thought was too useful to waste. Thus I have also made this a community wiki, so that others may flesh out question and answer(s). If you find the answer useful, please vote up the question - being a community wiki I should not get points for this voting but it will help others find it How can I get a path into which file writes are allowed on the iPhone? You can (misleadingly) write anywhere you like on the Simulator, but on the iPhone you are only allowed to write into specific locations.

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• Ubuntu One stuck and doing nothing

  - by Laurence Nagel

  Ubuntu One has worked fine for me for several weeks and I now have 8.2 GB of files in the clouds. Then, last night, Ubuntu One stopped working. When I fire up System > Preferences > Ubuntu One, it tells me that I have 8.2 GB stored (13.2 %) and that my status is Unknown. I've tried to restart to no avail. I even tried to remove, followed by clearing the password keyring and starting over. Still nothing. I've run out of buttons to push.

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• Window manager not loading when gnome-classic starts

  - by Dave M G

  When I boot up or log into gnome-classic (no effects), windows don't have the frame around them that has the minimize and close buttons and all that. After that, there all sorts of issues - for example, when I open a new window, it's in the very top left corner, obscuring the menu on the gnome panel... just a whole bunch of minor annoyances. I can get things working by by loading the compiz fusion icon and then selecting to reload the window manager. Of course this is less than ideal. How do I get the window manager to load automatically? Update: It seems that I get no window manager whenever I load Compiz, even after logging in. So it looks like the problem is more generally with Compiz's window manager.

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• Django: problem with merging querysets after annotation

  - by Björn Lilja

  Hi I have a manager for "Dialog" looking like this: class AnnotationManager(models.Manager): def get_query_set(self): return super(AnnotationManager, self).get_query_set().annotate( num_votes=Count('vote', distinct=True), num_comments=Count('comment', distinct=True), num_commentators = Count('comment__user', distinct=True), ) Votes and Comments has a ForeignKey to Dialog. Comments has a ForeignKey to User. When I do this: dialogs_queryset = Dialog.public.filter(organization=organization) dialogs_popularity = dialogs_queryset.exclude(num_comments=0) | dialogs_queryset.exclude(num_votes=0) ...dialogs_popularity will never returned the combination, but only the dialogs with more than 0 comments, or if I change the order of the OR, the dialogs with more than 0 votes! To me, the expected behavior would be to get the dialogs with more than 0 votes AND the dialogs with more than 0 comments. What am I missing? Or is there a bug in the annotation behavior here?

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• How can one use the "Add view" dialog in Visual Studio efficiently when working with ASP.NET MVC?

  - by Marek

  Does anyone else think that the add view dialog in VS is useless or is it just me? Why is there no search/filtering in there? I can not even paste the type name (without namespace) there to speed up the view creation. Plus, there are a lot of irrelevant classes there, including classes from all referenced libraries. Am I missing something or Microsoft never did any usability testing with that?? Is it possible to filter out types/assemblies in the dialog and/or better navigation compared to manually scrolling the combobox with all the types listed? Is it possible to include only types from a particular directory/assembly/namespace? (the ViewModels namespace for example) EDIT: As it seems from the answers that there is no usable workaround for this, I have filed a suggestion at Connect: https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=507784 Please vote for the suggestion if you find this is an important issue.

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• Login screen theme and background lost

  - by Sebastian Potasiak

  I tried to change my LightDM background and theme in Ubuntu 12.04 LTS beta 2, changing /usr/share/glib-2.0/schemas/com.canonical.unity-greeter.gschema.xml file (I don't even know if it would work, but I couldn't find any other way), and I failed and restored original file. Also, durning the same session I installed gnome-shell-extensions package, but it didn't work either. (I didn't remove it) Now my login screen looks a bit coarse, without theme and background. (It looks like MS Windows 95 a bit - square buttons and text fields) My question is, how to repair login screen (or how to customize it propely) and how to make gnome-shell-extensions work.

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• can't download music files purchased with ubuntu one from rhythmbox

  - by Andrea

  I used the link to Ubuntu One in Rhythmbox music player to purchase music. On the My Downloads page from Ubuntu One in the Rhythmbox it shows each of the files I purchased with and mp3 button and an AAC button. I should be able to download the files from these buttons but when I click on the button nothing happens - I was expecting a download manager to open up. I also was expecting the files to be transferred to my UbuntuOne account but don't see anything there either. (this is probably a second question) I am using 12.04 beta version of Ubuntu and the version of Rhythmbox that came with it: 2.96. Do I need to install something to be able to download these links? Thanks.

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• Order database results by bayesian rating

  - by One Trick Pony

  I'm not sure this is even possible, but I need a confirmation before doing it the "ugly" way :) So, the "results" are posts inside a database which are stored like this: the posts table, which contains all the important stuff, like the ID, the title, the content the post meta table, which contains additional post data, like the rating (this_rating) and the number of votes (this_num_votes). This data is stored in pairs, the table has 3 columns: post ID / key / value. It's basically the WordPress table structure. What I want is to pull out the highest rated posts, sorted based on this formula: br = ( (avg_num_votes * avg_rating) + (this_num_votes * this_rating) ) / (avg_num_votes + this_num_votes) which I stole form here. avg_num_votes and avg_rating are known variables (they get updated on each vote), so they don't need to be calculated. Can this be done with a mysql query? Or do I need to get all the posts and do the sorting with PHP?

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• 2D management game [on hold]

  - by Simon Bull

  Very newbie question but I have a game idea in mind. It will be 2d and data centric, like football manager. However I am struggling to find a platform that would suit. I am an experienced line of business developer so am happy to write code, but I would like a platform that does some of the leg work for me so was avoiding OpenGL. I would also like to be able deploy to iOS, android, windows and OS X. What are the options? To be more clear, the game is not a normal platform or shooter type game, so game maker is likely to be way too basic and unity seems a little over the top (though I am not sure if the GUI options would fit?). The majority of the game is more like business screens just displaying data and having buttons to click. Are there options for this type of game (May help to look at football manager)?

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• remastersys created Live DVD hangs in "Choose a picture"

  - by eos2012

  I used remastersys to create a Live DVD. Then, I used the Live DVD for the installation on another computer. The installation hung at the "Choose a picture" session. Both the "Back" and "Continue" buttons were disabled. It seemed like the installation was hung. I had to power-cycle the computer and reinstall from the Live DVD again. After the power-cycle, the installation from the Live DVD went successfully. Any idea why the installation hung at the "Choose a picture" session, and how to fix it without power-cycle the computer? Thanks a lot!

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• Best keyboard to use with RollerMouse

  - by jrdioko

  I recently purchased a RollerMouse, which seems like an excellent way to eliminate pain caused by mousing. My question is: what good keyboard can other programmers recommend that would work well with it. I currently have a Microsoft ergonomic keyboard, but the curve and large wrist rest make it hard to use with the RollerMouse. By "good", I mean: Works with the RollerMouse (no wrist rest) Ergonomic (a slight curve or other features designed to be easy on your wrists/arms) Good for programming (that would be its primary use, no need for fancy media buttons or anything like that) Suggestions?

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• Why can't the Unity panel be hidden?

  - by newboldrob

  I am a light Linux user. I have Natty installed on my netbook and used to have it dual-booted on my Windows 7 PC. After a total refresh of my notebook off came Ubuntu and I'm back to basics over there. But HERE (I'm running Natty on a HP-Mini) I've decided to poke around a bit to get the best user experience on this little thing. I really like the Unity interface but really hate the static Unity Panel. I have no clue why it's even necessary to be on globally. After all, in the classic interface, both panels can autohide or get filed aside with buttons on either side of the bar. On a 10" screen, real estate is at a premium. What intrinsic purpose does the static unity panel hold for the OS? There has to be a great reason for this thing to HAVE to be here. It ONLY goes away in fullscreen apps and I can't use everything fullscreen Why can the unity panel not be hidden?

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• How to fix Xubuntu LightDM Theme after installing unity.

  - by Christopher

  After successfully installing Xubuntu 12.04.1 on my laptop, I decided to install Unity. That went OK but then I realized there was no themes. So then I installed the themes and artwork, and got a really bad surprise. My lightDM greeter was still Xubuntu like I wanted but the buttons where you choose the user are really tall and I have a purple computer as the icon above my computer name. How do I get back to the original Xubuntu configuration or edit the CSS while keeping Unity? I know where all of the files are but don't know which file to edit or which CSS property to modify. Packages Installed: unity unity-services unity-mail Then I Installed: ubuntu-artwork light-themes ubuntu-wallpapers-oneric ubuntu-wallpapers-precise

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• How to insert in a blog sharing links to visitors Tweet, Facebook and so on social networks?

  - by Andry

  I am developing a web blog using ASP.NET, but I guess that the tech details like this, here, is not important. My aim is to insert in every post I create those nice buttons to the social networks account of my visitors so that they can quote or post the link to the blog entry in their space. How can I do this? I guess it also de3pend on the social network I want to use. Lets say, now, that I want to have links to Facebook, Tweet and Google circle accounts. Thankyou.

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• Why Google Analytics is displaying wrong landing pages?

  - by Salman

  I see all of my pages as Landing Pages in Google Analytics which cannot be true as I did not post those pages anywhere and I don't see any traffic hitting directly to that page. Also, I am using virtual page views on few buttons and I see those virtual pages as Landing pages too. For example, /click/request-a-quote 35000 views 35000 is too big a number to be ignored. Even if I ignore Virtual Pages Views, I see a lot of pages as Landing Pages that I am 100% sure that visitors ( atleast not so many users) are NOT hitting directly. Any advice, how to debug it? PS: I'm using the following code: var _gaq = _gaq || []; _gaq.push(['_setAccount', '<']); _gaq.push(['_setDomainName', 'none']); _gaq.push(['setLocalGifPath', '/images/_utm.gif']); _gaq.push(['_setAllowLinker', true]); _gaq.push(['_trackPageview','account/phase1']);

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• How can I create XML from Perl?

  - by pkaeding

  Hello I need to create XML in Perl. From what I read, XML::LibXML is great for parsing and using XML that comes from somewhere else. Does anyone have any suggestions for an XML Writer? Is XML::Writer still maintained? Does anyone like/use it? In addition to feature-completeness, I am interested an easy-to-use syntax, so please describe the syntax and any other reasons why you like that module in your answer. Please respond with one suggestion per answer, and if someone has already answered with your favorite, please vote that answer up. Hopefully it will be easy to see what is most popular. Thanks!

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• No sound after clean install

  - by John Cheednik

  Did a clean install of Ubuntu 12.10 and everything working great except for the sound. Ubuntu doesn't even seem to be recognizing the fact my HP dv6000 has the capability of making sound! I have the dummy output problem, and when I try to open alsamixer using terminal I get the message that no such file or directory exists. I can't get it to recognize any soundcards or audio devices at all. I've been working on the problem for a couple days now and have even taken the laptop apart to ensure that all cables are properly attached... When I go into the PhoenixBIOS there are no sound options that I can find. The laptop does make a loud beep if I press buttons in the BIOS, but once it boots to the hard drive, the thing is mute. HELP!

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• Tutorial/resource for implementing VM

  - by zaharpopov

  Hello, I want self-education purpose implement a simple virtual machine for a dynamic language, prefer in C language. Something like the Lua VM, or Parrot, or Python VM, but simpler. Are there any good resources/tutorials on achieving this, apart from looking at code and design documentations of the existing VMs? Thanks in advance for your answers and ideas Edit: why close vote? I don't understand - is this not programming. Please comment if there is specific problem with my question.

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• Building Interactive User Interfaces with Microsoft ASP. ...

  The ASP.NET AJAX UpdatePanel provides a quick and easy way to implement a snappier, AJAX-based user interface in an ASP.NET WebForm. In a nutshell, UpdatePanels allow page developers to refresh selected parts of the page (instead of refreshing the entire page). Typically, an UpdatePanel contains user interface elements that would normally trigger a full page postback - controls like Buttons or DropDownLists that have their <code>AutoPostBack</code> property set to True. Such controls, when placed inside an UpdatePanel, cause a partial page postback to occur. On a partial page postback only the contents of the UpdatePanel are refreshed, avoiding the "flash" of having the entire page reloaded. (For a more in-depth look at the UpdatePanel control, refer back to the

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• interface changed after restart on Xubuntu

  - by Svetlana

  Something happened a few times after using Xubuntu since 1 month ago. A few times after i restarted my laptop the interface was totally changed. The icons from the panel were different and almost everything. It looked great, it had a grey interface, very nice icons, buttons were bigger and everything looked great. I have no idea what happened, i tried to find the same interface/theme from Settings Manager but without succes. Can anyone please tell me what happened or how can i use the grey interface? It dissapeared after i restarted the laptop. Thank you

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• Are there any tweaks for fixing the appearance of Eclipse Juno on ubuntu?

  - by agnul

  As we have previously established ;-) running Eclipse on ubuntu is a bit disappointing on the UI side. Things are even worse now that Juno is out. Are there any tweaks specific to Gtk3 and Juno that help make things better? The new UI maybe needs some getting used to, but I'm not convinced. Padding got much worse with all the extra (useless?) space between panes. The gradient on the toolbar looks ugly, the quick search looks like it needs some more polish, the buttons to switch perspectives maybe would look nicer without the quick search bar, tabs are waaay to big. Not sure the color scheme has been fixed since I'm running a modified theme for the sake of old 3.7 (the infamous white on black tooltips)

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• Is there a purpose for using pull requests on my own repo if I am the only developper?

  - by marco-fiset

  So I got started with a real project of mine on GitHub and things are going pretty well and ideas are flowing a lot faster than I initially thought. In order to keep things organized, I setup some branches so I can develop different features separatly. Now when I push my branch to GitHub, I have that section where I have two buttons : Pull Request and Compare with the name of the branch I recently pushed to. I understand the purpose of the Compare button but I don't get why I would want to create a pull request on my own repo. Can someone explain me why I would do that? Is it useful to make pull request on my own repo if I am the only developper?

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• Gnome 3 panel and menus are all gone?

  - by Hannes

  I am running Ubuntu 11.10 using gnome 3 shell. I have set my pc to automatically log into gnome shell so I do not see the login screen. Today I installed some updates and now the gnome panel is gone. When my pc logs in I ONLY see the background. There are no menus, nothing! Even the exit, minimize and maximise buttons in the top tight corner of the windows are gone. Also, alt+f2 also does not work. Any ideas how to fix this? I have a Nvidia Geforce 7900GTO with the Nvidia proprietary drivers installed. I have also used the recovery mode and removed some packages that apparently were broken. Still does not work.

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• YouTube: Up & Running with Twitter Bootstrap

  - by Geertjan

  "Twitter Bootstrap is a free collection of tools for creating websites and web applications. It contains HTML and CSS-based design templates for typography, forms, buttons, navigation and other interface components, as well as optional JavaScript extensions. It is the most popular project on GitHub and has been used by NASA and MSNBC among others." (Wikipedia) Normally, when you read "getting started" instructions for Twitter Bootstrap, you're told to download various things from various sites. Then you're told to set up various folders and files, etc. What if it could be much simpler than that? Spend 7 minutes with me in this (silent) screencast and you'll see a complete development environment for developing applications with Twitter Bootstrap: Two things that could be added to the movie are the JavaScript debugger, the support for responsive design via switching between form factors in the embedded browser and Chrome with the NetBeans plugin, as well as how to convert the application to a native Android or iOS package via in-built Cordova support.

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