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• Ubuntu 13.10 and Dell Inspiron 7520 SE (Intel 4000 and ATI radeon HD 7730m)

  - by pjgowtham

  I installed 13.10 and i have problems with my display. Everything else works fine. I cant control my brightness. I thought the graphics driver is the problem. So i went to software updates, switched to another driver (proprietary) and the Ubuntu screen went black and i wasn't able to boot either. I cant use my lap with such low brightness. Then i reinstalled 13.10 again, This time full hdd reset. Same problem occurred. I grabbed radeon hd7730m for Linux x64 from the amd site, installed it, and the screen went black with only the "x" cursor showing on the next boot. What should i need to do to make my brightness work and stabilize graphic cards as mine is switchable graphics type.

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• Sudo Non-Password access to /sys/power/state

  - by John

  On my computer, pm-hibernate appears to be broken, however using the command echo disk > /sys/power/state appears to work perfectly. Now I just need regular user access to it, using sudo. How do I do this? The command sudo echo disk > /sys/power/state simply returns bash: /sys/power/state: Permission denied. Also, I need this in a regularly used script, how can I make it so that I don't have to type in my password for it to work???

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• Remove encryption from USB flash drive

  - by Timic

  It all started when I was attempting to format my PNY USB drive because it was full of junk. When it asked me what type of file system, I selected FAT but there was a checkbox below that said "Encrypt" and I accidently checked it and continue. I had no choice but to come up with a passphrase for it, and so I did, thinking I was able to remove that encryption. But after that at Disk Utility I thought I would find a "Remove Encryption" button or something like that but I didn't. I tried formatting it to remove the encryption but it gives me an error: Error Formatting, The device is busy" Detail>>> One or more block devices are holding /dev/sdb/. I am stuck, what should I do?

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• How to I compile uget from source?

  - by varunit

  I've downlaoded uget from its source fourge link. It is a tar.gz file. I have read that i could install a file of this type by extractingits contents and following these steps. ./configure make install But, when I give ./configure checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane - configure error Am i following the steps? What am I missing? I know the easiest way is to do sudo apt-get install uget But i want to know the reason for its failure. Thanks for your help

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• Uploading Files Using ASP.NET Web Forms, Generic Handler and jQuery

  - by bipinjoshi

  In order to upload files from the client machine to the server ASP.NET developers use FileUpload server control. The FileUpload server control essentially renders an INPUT element with its type set to file and allows you to select one or more files. The actual upload operation is performed only when the form is posted to the server. Instead of making a full page postback you can use jQuery to make an Ajax call to the server and POST the selected files to a generic handler (.ashx). The generic handler can then save the files to a specified folder. The remainder of this post shows how this can be accomplished.http://www.bipinjoshi.net/articles/f2a2f1ee-e18a-416b-893e-883c800f83f4.aspx      

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• No internet access since 12.04

  - by Roelof

  I have updated yesterday to Ubuntu 12.04 but can not access the Internet. It is an old PC without wireless. But the older Ubuntu I had installed up until now (11.??) worked perfectly. I'm not that familiar with Ubuntu, and I have been trying Google for some time know, but I cannot find the answer. I noticed that running nm-tool resulted in some things that don't sound right: Type: wired Driver: ne2k-pci state: unavailable Default: no Carrier: off Does anyone have a way to fix the connection?

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• How can I get the name of the current terminal from command-line?

  - by Xubu-Tur

  Is there a possibility to get the type of terminal with a command? If I'm using gnome-terminal the output should be gnome-terminal or something similar. It would be also nice to get the version of the terminal. Update ps -aux | grep `ps -p $$ -o ppid=` will output something like this: user 4239 0.0 0.7 292708 15744 pts/8 Sl 11:39 0:02 xfce4-terminal user 4800 0.0 0.0 6176 820 pts/0 S+ 12:23 0:00 grep --color=auto 4239 This will also work with xterm, but i don't know how to get only the name (xfce4-terminal in this case).

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• Chargeback and billing across public and private clouds

  - by llaszews

  Had a great conversation today regarding the need for metering, chargeback, and billing of cloud computing resources. The person I spoken with at a Fortune 1000 company increased the scope and magnitude of the issue of billing for cloud computing resources beyond what I had previously considered. I believed that doing any type of chargeback and billing for one public, private or hybrid installation was difficult. This person pointed out that the problem is even bigger in scope. The reality is many companies are using multiple public cloud vendors and have many different private cloud data centers. A customer may use AWS for some smaller public cloud applications, Salesforce.com (SaaS), Rackspace for IaaS, Savvis for colocation and a variety of Iaas and PaaS implementations for the private cloud. How does a company get a consolidated bill for all these different cloud environments? I am not sure their is an answer right now.

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• Une pénurie d'écrans tactiles pourrait frapper en 2011, 60% du stock mondial serait réservé par Apple

  Une pénurie d'écrans tactiles pourrait frapper en 2011, 60% du stock mondial serait réservé par Apple Après l'IPv4, on pourrait connaître une pénurie... d'écrans tactiles ! Il semblerait en effet qu'Apple se soit octroyé 60% de la production mondiale pour 2011, en effectuant des réservations auprès des fabriquants. Évidemment, le succès de l'iPad y serait pour quelque chose, la firme souhaitant en produire 40 millions d'exemplaires au cours de l'année. Le soucis, c'est que Cupertino n'est pas la seule entreprise demandeuse de ce type de technologie, qui est en pleine expansion. Tous les fabricants de tablettes et de smartphones veulent leur part du gâteau, et la compétition risque d'être...

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• Missing return statement when using .charAt [migrated]

  - by Timothy Butters

  I need to write a code that returns the number of vowels in a word, I keep getting an error in my code asking for a missing return statement. Any solutions please? :3 import java.util.*; public class vowels { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.println("Please type your name."); String name = input.nextLine(); System.out.println("Congratulations, your name has "+ countVowels(name) +" vowels."); } public static int countVowels(String str) { int count = 0; for (int i=0; i < str.length(); i++) { // char c = str.charAt(i); if (str.charAt(i) == 'a' || str.charAt(i) == 'e' || str.charAt(i) == 'o' || str.charAt(i) == 'i' || str.charAt(i) == 'u') count = count + 1; } } }

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• How do I implement a selectable world map?

  - by Clay

  I want to have a selectable map of the world, preferably zoomable, in a cocos2d project. When I tap on a country, I want that country to be selected so that I can perform some other operations with it. It seems that the best approach would be to use a vector world map, but I'm unsure how to implement this with cocos2d. Other options include using map tiles, but it seems that still would require the implementation of country polygons for tap/click detection. Depending on user input, I want to add icons to various countries on the map. What is a good way to approach the implementation of this type of map?

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• 13.10 Unable to link Google account

  - by Lolwhites

  When I try to connect my Google account, the following happens: I open "Online Accounts" - the Google account appears in the left hand margin. When I highlight it, I am invited to grant access. On clicking on "Grant Access", I get a window with the following message: Erreur :invalid_request Invalid response_type: code&access_type=offline En savoir plus Détails de la requête response_type=code&access_type=offline scope=https://docs.google.com/feeds/ https://www.googleapis.com/auth/googletalk https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile https://picasaweb.google.com/data/ redirect_uri=https://wiki.ubuntu.com/ client_id=759250720802-4sii0me9963n9fdqdmi7cepn6ub8luoh.apps.googleusercontent.com type=web_server Clicking the "Cancel" button returns me to Online Accounts, but a new window opens with the same error messages, and pops up repeatedly when I try to close it. I have tried to remove the account and re-add, but when I click on "Remove Account" I am asked if I'm sure, but nothing happens when I click "Remove"; the dialogue box disappears but the account stays. There's a bug report on Launchpad here but it says the bug has been fixed. Not for me, apparently...

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• How do I plot individual pixels using the XNA APIs?

  - by izb

  If I wanted to fill my game screen with individually coloured pixels, how would I do this? For example, if I wanted to write a 'game of life'-type game where each pixel was a cell, how would I achieve this using XNA? I've tried just calling SetData() on a Texture2D object using a screen-sized array of Color values, but it complains with: You may not call SetData on a resource while it is actively set on the GraphicsDevice. Unset it from the device before calling SetData. How do I do as it asks? Or better still... is there an alternative, better, efficient way to fill a screen with arbitrary pixels?

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• Google I/O 2012 - Breaking the JavaScript Speed Limit with V8

  Google I/O 2012 - Breaking the JavaScript Speed Limit with V8 Daniel Clifford Are you are interested in making JavaScript run blazingly fast in Chrome? This talk takes a look under the hood in V8 to help you identify how to optimize your JavaScript code. We'll show you how to leverage V8's sampling profiler to eliminate performance bottlenecks and optimize JavaScript programs, and we'll expose how V8 uses hidden classes and runtime type feedback to generate efficient JIT code. Attendees will leave the session with solid optimization guidelines for their JavaScript app and a good understanding on how to best use performance tools and JavaScript idioms to maximize the performance of their application with V8. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 3049 113 ratings Time: 47:35 More in Science & Technology

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• Liskov substitution principle with abstract parent class

  - by Songo

  Does Liskov substitution principle apply to inheritance hierarchies where the parent is an abstract class the same way if the parent is a concrete class? The Wikipedia page list several conditions that have to be met before a hierarchy is deemed to be correct. However, I have read in a blog post that one way to make things easier to conform to LSP is to use abstract parent instead of a concrete class. How does the choice of the parent type (abstract vs concrete) impacts the LSP? Is it better to have an abstract base class whenever possible?

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• How can I have only two specific keyboard layouts in my system without 'us'?

  - by ??O?????

  I want only two keyboard layouts in my system: us altgr-intl (USA International (AltGr dead keys) ) and gr (Greece), so this is what I've selected in System ? Preferences ? Keyboard ? Layouts. However, every time I begin a new Gnome session (reboot, logout/login), the us keyboard layout is automatically inserted at the top of the list. I created a small script called fixlang that ensures the desirable result: layouts='[us altgr-intl,gr]' # tab between us and altgr key=/desktop/gnome/peripherals/keyboard/kbd/layouts active_layouts="$(gconftool -g $key)" if [ "$active_layouts" != "$layouts" -o "$1" == -f ] then gconftool -t l --list-type=str -s $key "$layouts" fi which I run on login. However, this is a kludge. How can I ensure that Gnome does not mess with my keyboard layout selection?

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• /etc/apt/apt.conf gets cleared every time I change proxy settings under settings->network->Network proxy

  - by Muriuki David

  I use a proxy server settings at work but when i get home, my network connection uses no proxy settings. every time i get home and use the proxy settings under settings-networks-Network Proxy to set to "none", the file /etc/apt/apt.conf gets cleared and the following day in the morning i have to edit the file and type in the command again, or at least copy paste from a backup file. How can i avoid this situation, its tiring, how can i make the proxy settings gui write to this file for apt-get and software center to work when i set proxy under network settings?

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• Unity: Nautilus folder opens in background

  - by JJD

  I am used to open a folder from the keyboard with a shortcut. The alternatives are: Use Unity Dash with the shortcut SUPER + F to open the Dash File Lens Open Kupfer with the configured shortcut (CTRL + ALT + SPACE, in my case) Then I type the name of the folder and press ENTER if it is selected. However, the window that opens up is not active but in the background. I have to press ALT + TAB to bring it into foreground. I use Ubuntu Precise (12.04.). Question: How can I configure Ubuntu, Unity, Nautilus so newly opened windows become foreground immediately? Edit: This behavior only happens when another application is already open such as GEdit. It does not happen when the only other selectable entity is the Desktop.

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• How to start jenkins?

  - by Jeffery Bingham

  I installed jenkins via sudo apt-get install jenkins. However, it doesn't start up. Tried to start it manually using sudo /etc/init.d/jenkins start. But it says this message when I try to start it that way: start: Rejected send message, 1 matched rules; type="method_call", sender=":1.67" (uid=1000 pid=7970 comm="start jenkins ") interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply="0" destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init")" init.d method just says starting, but never starts... How do I fix this / get jenkins to start up?

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• Utility Queries–Database Files, (and Filegroups)

  - by drsql

  It has been a while since I last posted a utility query, and today, to avoid other work I am supposed to be doing, I decided to go ahead and work on another post.  Today, I went ahead and worked on a server configuration type query. One query I find I use pretty often is the following one that lists the files in the database. In this blog I will include 3 queries.  The first will deal with files and databases, and the second runs in a database to see the files and their filegroups (If there...(read more)

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• Transactional Interceptors in Java EE 7 - Request for feedback

  - by arungupta

  Linda described how EJB's container-managed transactions can be applied to the Java EE 7 platform as a whole using a solution based on CDI interceptors. This can then be used by other Java EE components as well, such as Managed Beans. The plan is to add an annotation and standardized values in the javax.transaction package. For example: @Inherited @InterceptorBinding @Target({TYPE, METHOD}) @Retention(RUNTIME) public @interface Transactional { TxType value() default TxType.REQUIRED } And then this can be specified on a class or a method of a class as: public class ShoppingCart { ... @Transactional public void checkOut() {...} ... } This interceptor will be defined as part of the update to Java Transactions API spec at jta-spec.java.net. The Java EE 7 Expert Group needs your help and looking for feedback on the exact semantics. The complete discussion can be read here. Please post your feedback to [email protected] and we'll also consider comments posted to this entry.

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• Boot Failure: No default or UI configuration directive found Normal install on laptop [closed]

  - by user79920

  I have had Ubuntu on my laptop for quite a while, it's just a standard install, no partitioning off, no wierdness of any other sort, just ubuntu. Today my computer started to lag really bad so I tried to restart it, but after bios loaded I just got an error that said "ERROR: No configuration file found No DEFAULT or UI configuration directive found!" After that it had "boot:" and a cursor, like it expects me to type something. Once again, this is just a normal install on my hard drive, not a VM or booting from USB. It's Ubuntu 12.04 on a Sony Vaio VGN-SZ240P Any help is appreciated!

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• .htaccess file to implement multiple redirects

  - by RobMorta

  I have a dynamic site and from .htaccess file creating clean URLs: RewriteCond %{REQUEST_URI} !(\.png|\.jpg|\.gif|\.jpeg|\.bmp)$ RewriteRule ^([a-zA-Z0-9_\-\+\ ]+)$ flight.php?flights=$1&slug=$1 This code worked fine for me but when I created a new type of page and trying to get clean URLs with the same code i.e.: RewriteCond %{REQUEST_URI} !(\.png|\.jpg|\.gif|\.jpeg|\.bmp)$ RewriteRule ^([a-zA-Z0-9_\-\+\ ]+)$ manual-page.php?url=$1&slug=$1 it's not working and if I comment the previous two lines then its is working fine. Only one code is working at a time. For first I have a URL domain.com/flight.php?flight-san-fransisco-london-flights and I want this being redirect to domain.com/san-fransisco-london-flights & from the second one I have domain.com/manual-page.php?url=my-new-page and I want this being redirect to domain.com/my-new-page. Is these any way to get both working together?

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• Do reactive extensions and ETL go together?

  - by Aaron Anodide

  I don't fully understand reactive extensions, but my inital reading caused me think about the ETL code I have. Right now its basically a workflow to to perform various operations in a certain sequence based on conditions it find as it progresses. I can also imagine an event driven way such that only a small amount of imperative logic causes a chain reaction to occur. Of course I don't need a new type of programming model to make an event driven collaboration like that. Just the same I am wondering if ETL is a good fit for potentially exploring Rx further. Is my connection in a valid direction even? If not, could you briefly correct the error in my logic?

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• SL: Silverlight 5

  - by xamlnotes

  Check out this new demo from MIX11. http://code.msdn.microsoft.com/silverlight/3D-Housebuilder-demo-from-def4af04 SL 5 is the next big step for great apps in SL. This new release is adding more features to an already great technology.  You can find out more about this release at http://www.microsoft.com/silverlight/future/ . I particularly like the new features for business applications such as the next text improvements and making the combo box type ahead right out of the box. Plus there are more enhancements for databinding too.  And the list goes on and on with features such as performance and “trusted application”. Where is Sl 5 now? its in Release Candidate now so the final bits should not be far down the road.

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