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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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• gnome-file-share-properties doesn't work

  - by Riccardo Magrini

  I've configured gnome-file-share-properties on all my Ubuntu's PC for sharing the directory Public to each other. I following some guide found on Internet for the configuration of it, all explain the same procedure but in my case I don't see any Public directory shared with the PC. Following this link http://library.gnome.org/users/gnome-user-share/stable/gnome-user-share-getting-started.html.en I'd see the directory Public plus the name of PC that shares its directory on Nautilus Places. In my case I don't see anything, therefore on the Network place see all the machines 'n if I try to click on one receive this: "DBus error org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)" note: I don't want to use Samba because I've all Ubuntu PC, and the firewall is disabled on all PC.

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• dynamic grid style form that lets you update multiple rows in a single post in asp.net mvc

  - by Charlie Bear

  I'm starting out with MVC but not sure it's the best option. I need to create a form that is based upon a collection. Eg it might look like this: product Price Item 1 [textbox] Item 2 [textbox] [submit button] where "item" is pulled from the database and textbox allows users to update the price. essentially this is a type of datagrid but i don't want webforms style update each row one at a time i need to update the entire set of text boxes in one post. Ideally I don't want a javascript based solution as it has to work without javascript. Is this possible in MVC or should I stick to webforms (where I could do this in a repeater by iterating through he repeater items on postback)

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• How is a software backdoor implemented?

  - by rdasxy

  The wikipedia article on Limewire says that "LimeWire 5.5.11 and newer have been disabled using a backdoor installed by the company". How are such backdoors implemented? Is it as simple as the the program going out and checking a web service and disabling itself? If it's in fact so simple, it has to be stored somewhere on the user's drive (in a plist, or in the registry for example). It's hard to imagine no one has in fact figured out a way to turn that flag off and use the program.

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• How does twitter server get to know single tweet ID from URL fragment segment?

  - by Morgan Cheng

  Each tweet has a single URL such as http://twitter.com/#!/DeliciousHot/status/23189589820702720. The tweet identification (/DeliciousHot/status/23189589820702720) is in the URL fragment segment which is not actually sent to server. Originally, I thought it works this way: The URL response doesn't have this tweet specific info. It is JavaScript module that extracts tweet id from current browser URL and fetch tweet payload with AJAX. The page content is then updated with the tweet payload. To my surprise, it is doesn't work this way! With Firebug, you can view that response of http://twitter.com/#!/DeliciousHot/status/23189589820702720 has tweet payload "10 Signs of a True Gentleman" text in inline JavaScript. The tweet payload is not fetched by another AJAX. So, how does Twitter server get to know the expected tweet ID even it is in URL fragment segment?

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• How can I force a preferred sound output device to be used?

  - by Dave M G

  In my sound settings interface, there are two devices for sound output: Both refer to the same physical device, which is a network sound device. Both work, but only with the second one, Simultaneous output to Kenwook Audio Device Digital Stereo (IEC958) on mythbuntu@mythbuntu, does the output volume respond to being changed. The first one always plays at the same level, and ignores volume settings. Every time I boot, the first one is selected. How can I make it so the second one is the default and the first one is disabled or at least never selected?

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• Java Http request on api.stackexchange with json response

  - by taoder

  I'm trying to use the api-stackexchange with java but when I do the request and try to parse the response with a json parser I have an error. public ArrayList<Question> readJsonStream(InputStream in) throws IOException { JsonReader reader = new JsonReader(new InputStreamReader(in, "UTF-8")); reader.setLenient(true); try { System.out.println(reader.nextString()); // ? special character return readItem(reader); } finally { reader.close(); } } public ArrayList<Question> readItem(JsonReader reader) throws IOException { ArrayList<Question> questions = new ArrayList<Question>(); reader.beginObject(); while (reader.hasNext()) { System.out.println("here");//not print the error is before String name = reader.nextName(); if (name.equals("items")) { questions = readQuestionsArray(reader); } } reader.endObject(); return questions; } public final static void main(String[] args) throws Exception { URIBuilder builder = new URIBuilder(); builder.setScheme("http").setHost("api.stackexchange.com").setPath("/2.0/search") .setParameter("site", "stackoverflow") .setParameter("intitle" ,"workaround") .setParameter("tagged","javascript"); URI uri = builder.build(); String surl = fixEncoding(uri.toString()+"&filter=!)QWRa9I-CAn0PqgUwq7)DVTM"); System.out.println(surl); Test t = new Test(); try { URL url = new URL(surl); t.readJsonStream(url.openStream()); } catch (IOException e) { e.printStackTrace(); } } And the error is: com.google.gson.stream.MalformedJsonException: Expected literal value at line 1 column 19 Here is an example of the Json : { "items": [ { "question_id": 10842231, "score": 0, "title": "How to push oath token to LocalStorage or LocalSession and listen to the Storage Event? (SoundCloud Php/JS bug workaround)", "tags": [ "javascript", "javascript-events", "local-storage", "soundcloud" ], "answers": [ { "question_id": 10842231, "answer_id": 10857488, "score": 0, "is_accepted": false } ], "link": "http://stackoverflow.com/questions/10842231/how-to-push-oath-token-to-localstorage-or-localsession-and-listen-to-the-storage", "is_answered": false },... So what's the problem? Is the Json really malformed? Or did I do something not right? Thanks, Anthony

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• Understanding run time code interpretation and execution

  - by Bob

  I'm creating a game in XNA and was thinking of creating my own scripting language (extremely simple mind you). I know there's better ways to go about this (and that I'm reinventing the wheel), but I want the learning experience more than to be productive and fast. When confronted with code at run time, from what I understand, the usual approach is to parse into a machine code or byte code or something else that is actually executable and then execute that, right? But, for instance, when Chrome first came out they said their JavaScript engine was fast because it compiles the JavaScript into machine code. This implies other engines weren't compiling into machine code. I'd prefer not compiling to a lower language, so are there any known modern techniques for parsing and executing code without compiling to low level? Perhaps something like parsing the code into some sort of tree, branching through the tree, and comparing each symbol and calling some function that handles that symbol? (Wild guessing and stabbing in the dark)

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• Ubuntu installation accuses false RAID

  - by rOim

  I'm trying to install a Ubuntu 12.04/Win7 dual boot on my machine (with 2 750GB HDs). Problem is, during the partitioning, the installation says I'm using RAID, and shows only one HD, with 1.5TB. I have, however, disabled raid on the setup, and installed Windows 7 only on HD 1, and want to keep Ubuntu to HD 2. I'm afraid to "resize" the partitions using the installer since that could mess my win7 installation. I did try to use the alternate installer, but had the same results.

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• How do I set up XDMCP access via GDM?

  - by np_hard

  I am a newbie to ubuntu linux, and want to setup xdmcp access, so i can access it from my windows box using xming. part of it is learning exercise also, since i know i could use vnc to directly connect to ubuntu. I modified the gdm's custom.conf file like this [xdmcp] Enable=true but when i launch xlaunch, i see a blank screen, further diagnosing with wireshark, i got that the udp port 177 on the linux box is unreachable so i disabled the firewall on linux box, but still same result. I checked with nmap and there is no service listening on UDP 177 port, the gdnsetup on natty is quite different from the older version, where setting up xdmcp was in UI

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• How can I optimise ext4 for reliability?

  - by amin

  As ext4 was introduced as more reliable than ext3 with block journals, is there any chance to suppose it 100% reliable? What if enabling block journaling on it, which is disabled by default? As friend's guide to explain my case in more detail: I have an embedded linux device, after installation keyboard and monitor is detached and it works standalone. My duty is to make sure it has reliable file-system so with errors there is no way for manual correct faults on device. I can't force my customer to use a ups with each device to ensure no fault by power-failure. What more can ext4 offer me besides block journaling? Thanks in advance.

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• how to make ext4 more reliable?

  - by amin

  hi dears as ext4 introduced more reliable than ext3 with block journals, is there any chance to suppose it 100% reliable? what if enabling block journaling on it, which is disabled by default? as friend's guide to explain my case in more detail: i have an embedded linux device, after installation keyboard and monitor is detached and it works standalone. my duty is to make sure it has reliable file-system so with errors there is no way to fsck on device. i can't force my customer to use a ups with each device to ensure no fault by power-failure. what can you offer me more than enabling block journaling? thanks in advance

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• Help! How to get the event handler with IE Dom interfaces?

  - by usfree74

  Hey Gurus, I am working to use IE Dom interface to automate IE page access. I am trying to get all event handlers defined in a page. I am using IHTMLElement object now for this purpose. If the html page defines "onclick=xxx", element.onclick returns the click handler. However, if an event handler is defined in javascript, element.onclick simply returns NULL. What's the right way to get the event handler then? Thanks, xin Below is an example that uses javascript to define event handler. $(document).ready(function(){ $("a").click(function(event){ $(this).hide("slow"); alert("Thanks for visiting!"); window.location="http://cnn.com"; }); }); jQuery

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• how to implement a login system under php?

  - by kevin

  Are there any good tutorials on how to create your own registration, authentications using php/mysql/or javascript.

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• Freeze when installing 13.10

  - by ckiwun

  guys! I encountered an installation problem when I try to make a dual boot computer of win8 and ubuntu 13.10. I follow this guide:http://overtond.blogspot.tw/2013/10/ubuntu-on-gigabyte-p34g-ultrablade.html because the same of the laptop GIGABYTE p34g. I disabled the secure boot(as well as 3D graphic acceleration and Intel rapid start as the above script advised) and start installing. However, installation got stuck like this(http://ppt.cc/iMYQ). I have been bothered by this for a week. Any advice would help, thanks!

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• Having tried differen ways but none worked - How do I disable a service from auto-start at boot in Ubuntu?

  - by Howard Guo

  This really doesn't make sense. I've been using many other distros and never had such difficulty managing autostart services. I found three ways of disabling autostart services, and none of them works for me: update-rc.d -f service_name remove chkconfig --level 12345 service_name off sysv-rc-conf I tried all the three ways to disable mysql daemon, mongo daemon, redis server, cups daemon, yet all of the utilities confirmed that the daemons are disabled, yet they still automatically start on boot. Please suggest the most correct way to disable services from auto-start at boot. Thank you! btw, it's running 12.04

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• why doesn't hitting enter when a SELECT is focused submit the form?

  - by Marc

  Consider the following HTML: <form action=""> <input /> <select> <option>A</option> <option>B</option> </select> <input type="submit" /> </form> If the focus is on the input (text box) and I hit enter, the form submits. But, if the focus is on the select (dropdown box) and I hit enter, nothing happens. I know I could figure out some JavaScript to override this, but I want to know why hitting enter doesn't just work? Is there something I would break by capturing the enter with JavaScript (maybe some native keyboard accessibility of the dropdown)?

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• Alternative to Google Adsense which has good international coverage

  - by Yoga

  I have a technical blog (programming related) which has around 500 visit per days, 70% are international visitors and 30% are from US/CA. Google Adsense disabled my account due to invalid clicks so I can't use them (no need to explain here, they suck hard and never respect and listen to the publishers' appeal) I have tried adbrite and recently using chitika but they almost give me nothing, e.g. chitika 13,865 Page Views 4 clicks $0.01 The performance is so poor even I don't want to mention about it. I am already putting a full top banner and a 350x200 box in article body. I am researching if any alternative would provide more revenue for my internation visitors or technical visitors. Thanks.

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• I have installed ubuntu into my windows 7 64 bit, i am having problems with boot

  - by noob

  I have a problem I have not found any solution to, I am not so familiar with ubuntu commands or ubuntu in general. My problem started when I chose in windows 7 settings/ bootloader settings as ubuntu default, and it boots straight into grub, and in grub if I choose windows, it goes to the loader for half a sec, and goes straight back to grub. So I have disabled my windows 7 completely. And I have not found any way to boot back to windows, so I could go to settings and set it to windows... My only option seems to be re-installing the whole Windows 7...thus loosing all my saved games etc... I am fine using ubuntu for basic needs, but I am getting desperate here...

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• How to modify the default position of desktop icons

  - by Hanynowsky

  Is it possible to modify the default desktop icons position so that icons move a little bit to right. If yes, how? As far as I know, there is no tweak for that in Nautilus. When I click "Organize Desktop by Name", the icons get aligned to the left of Desktop: that's fine, but they're too close to the launcher when it's in AUTO HIDE mode. So when Launcher is revealed, it comes over icons. Reproduce: Download some files from your browser or copy files/folders from a folder to the desktop, then these latter will be placed just like the screenshot. Their position is fine when the launcher is hidden, but when revealed, it hides a part of the icons. There is no problem when LAUNCHER AUTO-HIDE MODE is disabled. Thanks in advance.

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• x.lastChild.nodeValue

  - by Zeb-ur-Rehman

  <html> <head> <script type="text/javascript" src="jQuery.js"> <script type="text/javascript"> x=document.getElementByTagName("p"); document.write(x.lastChild.nodeValue); </script> </head> <body> <p id="intro">Hello World 1!</p> <p id="intro">Hello World 2!</p> <p id="intro">Hello World 3!</p> </body> </html> Why doesn't the above code work. I want to show [Hello World 3!] by using the statement documetn.write(x.lastChild.nodeValue()); Thanks in advance...

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• Solutions for redundant server and client code?

  - by Fragsworth

  In our system, the code which exists on the client side (in Flash and Javascript) mirrors the code that exists on the server side (e.g. in Python or PHP), normally with respect to the models, the methods available for those models, and the unit tests written for them. This becomes a problem in systems where you want to minimize data transfer (e.g. multiplayer games). I do not want to write the same code and unit tests redundantly for both the client and server, but I don't know of any standard solutions to deal with this. Basically, I want a language/compiler which can produce models and methods for three main languages: Actionscript, Javascript, and any server language. Does something like this exist?

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• jQuery color plugin: onMouseOver animation causes flickering in FF3.5.5

  - by rt-uk

  I'm trying to change the background color of a div on mouseover and mouseout. Instant change to yellow on MouseOver, and slow fade on MouseOut. function hilightel(keydiv) { $('#'+keydiv).animate({ backgroundColor: '#ffffd3' },1); } function lolightel(keydiv) { $('#'+keydiv).animate({ backgroundColor: '#ffffff' },300); } < div onMouseOver=javascript:highlightel('item1'); onMouseOut=javascript:lolightel('item1'); id='item1'CONTENT< /div When the mouse moves over text within the div, though, it thinks I've moused-out and so flickers badly. Alternatives that don't work: - animateToClass doesn't support background-color so I'm using the 'color' plugin - I hear that switchClass doesn't work in Chrome - Can't use .hover because their will be dynamically named divs in the page so need a general function Thanks in advance...

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• IE Cannot open the internet site (no JS on the page)

  - by Nic Hubbard

  I know that there are many posts about this on Stackoverflow, but this one is different. All of the other fixes to this have to do with javascript, but I don't even have javascript on my page. None. And I am still getting this error. Was there any other reasons why this error was being caused? Also, it only happens when I visit my top navigation links, rather than the page directly from the url. Take a look at: http://www.mayandivers.com/see EDIT: This is happening in IE6/7.

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• Will news ticker using overflow:hidden cause Google to see site as spam?

  - by molipix

  In the hope of tempting Googlebot with fresh content, I've implemented a homepage news ticker which displays the 20 most recent headlines on our site. The implementation I have chosen is a <ul> with each headline being a <li> Initially all the <li> elements have no style but Javascript kicks in on page load and gives all but one of them a display="style:none" attribute. Javascript then displays each of the other 19 headlines in a loop. So far so good. However, in order to prevent a visually unplesant page load where the 20 items display and then immediately collapse, I am using overflow:hidden on the <ul> element. Anyone got a view on what Googlebot is likely to make of this? Does the fact that I'm using overflow:hidden make the content look like spam?

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