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  • Upgrade from 13.04 to 13.10 fails early on

    - by Bob Lewis
    I am attempting to upgrade from 13.04 to 13.10. Right after the early on message Downloading file 1 of 2 and then it goes on to 2 of 2 the upgrade process dies. A reboot and attempt again fails at the same point. This is a 64 bit system with an SSD for the boot drive. If memory serves me when attempting to do same from the command line I saw some dbus error which may or may not be related. Any help much appreciated. Obviously I could attempt a fresh install which would likely succeed.

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  • Ubuntu and surround sound

    - by keith
    I'm trying to connect my Logitech x.530 to my Dell studio 1558 and get 5.1 sound. I have 3 jacks and in Windows I automatically could switch between line in adn mic. Which means I could get 5.1 surround over these 3 jacks. Ubuntu does not realise that one of the three jacks should be switched to give sound to the center and LFE speaker. I tried all the tips in the forums, but nothing works. I can only select 4.0 sound in pulse audio. As the dell and the IDT 92hd89e chip for the sound are probably famous laptops I thought there must be someone who has similar issues in the 5.1 sound. I would like to stay at Linux but without this hardware support it's almost impossible.

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  • Looking for an algorithm to connect dots - shortest route

    - by e4ch
    I have written a program to solve a special puzzle, but now I'm kind of stuck at the following problem: I have about 3200 points/nodes/dots. Each of these points is connected to a few other points (usually 2-5, theoretical limit is 1-26). I have exactly one starting point and about 30 exit points (probably all of the exit points are connected to each other). Many of these 3200 points are probably not connected to neither start nor end point in any way, like a separate net, but all points are connected to at least one other point. I need to find the shortest number of hops to go from entry to exit. There is no distance between the points (unlike the road or train routing problem), just the number of hops counts. I need to find all solutions with the shortest number of hops, and not just one solution, but all. And potentially also solutions with one more hop etc. I expect to have a solution with about 30-50 hops to go from start to exit. I already tried: 1) randomly trying possibilities and just starting over when the count was bigger than a previous solution. I got first solution with 3500 hops, then it got down to about 97 after some minutes, but looking at the solutions I saw problems like unnecessary loops and stuff, so I tried to optimize a bit (like not going back where it came from etc.). More optimizations are possible, but this random thing doesn't find all best solutions or takes too long. 2) Recursively run through all ways from start (chess-problem-like) and breaking the try when it reached a previous point. This was looping at about a length of 120 nodes, so it tries chains that are (probably) by far too long. If we calculate 4 possibilities and 120 nodes, we're reaching 1.7E72 possibilities, which is not possible to calculate through. This is called Depth-first search (DFS) as I found out in the meantime. Maybe I should try Breadth-first search by adding some queue? The connections between the points are actually moves you can make in the game and the points are how the game looks like after you made the move. What would be the algorithm to use for this problem? I'm using C#.NET, but the language shouldn't matter.

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  • Getting current time in milliseconds

    - by user90293423
    How to get the current time in milliseconds? I'm working on a hacking simulation game and when ever someone connects to another computer/NPC, a login screen popups with a button on the side called BruteForce. When BruteForce is clicked, what i want the program to do is, calculate how many seconds cracking the password is going to take based on the player's CPU speed but that's the easy part. The hard part is i want to enter a character in the password's box every X milliseconds based on a TimeToCrack divided by PasswordLength formula. But since i don't know how to find how many milliseconds have elapsed since the second has passed, the program waits until the CurrentTime is higher than the TimeBeforeTheLoopStarted + HowLongItTakesToTypeaCharacter which is always going to be a second. How would you handle my problems? I've commented the game breaking part. std::vector<QString> hardware = user.getHardware(); QString CPU = hardware[0]; unsigned short Speed = 0; if(CPU == "OMG SingleCore 1.8GHZ"){ Speed = 2; } const short passwordLength = password.length(); /* It's equal to 16 */ int Time = passwordLength / Speed; double TypeSpeed = Time / passwordLength; time_t t = time(0); struct tm * now = localtime(&t); unsigned short EndTime = (now->tm_sec + Time) % 60; unsigned short CurrentTime = 0; short i = passwordLength - 1; do{ t = time(0); now = localtime(&t); CurrentTime = now->tm_sec; do{ t = time(0); now = localtime(&t); }while(now->tm_sec < CurrentTime + TypeSpeed); /* Highly flawed */ /* Do this while your integer value is under this double value */ QString tempPass = password; tempPass.chop(i); ui->lineEdit_2->setText(tempPass); i--; }while(CurrentTime != EndTime);

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  • How much data validation is too much? [closed]

    - by adbertram
    Possible Duplicate: Data input validation - Where? How much? I'm a new PHP developer and am into Powershell quite a bit but this question is language agnostic. I've been questioning my code quite a bit lately thinking about how many nets I should setup to catch exceptions, verify results, etc. I realize that I could go crazy trying to verify each and every line of code but at the same time I want the code as resilient as possible. I'm not talking about user input but verifying output from methods. Is there some standard or rule of thumb to go by when deciding when and where to do data validation?

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  • Writing files to an Airport Extreme using afp

    - by Bill Oldroyd
    Using Nautilus I can connect from Ubuntu 12.04 (64-bit) to my Apple Airport Extreme using user & password without a problem. I can read, browse folders and delete files. However I cannot write files, the file is created, but the contents of the file are not transferred. The transfer fails with the error message "kFPMiscErr" which I think means that "authentication has already been established" ?. I have tried the command line tools for access using AFP but these do not work either. Is there a solution to this problem ?

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  • /build folder used by PEAR

    - by Paul
    I've just noticed a root directory (/build) which I can't seem to find any information for. It looks like it's some sort of staging ground for PEAR (PHP). There are only two folders of different php versions in it, and each of those has a few PEAR tar files I've installed (via the PEAR command line). I'm really only asking this question because I find is strange PEAR (and only PEAR) would create its own root directory to store files. Is this normal? Does Ubuntu provide a /build directory for applications to use?

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  • << and >> in C++

    - by JacKeown
    I don't quite understand what this means...I'm just learning C++ from my very very very basic Python experience...and so this may be a very stupid question. My question is...say you have your classic "Hello World" program and you have the line: cout<<"Hello World!"<<endl; what does the << mean...because I was just looking at using input in C and saw that you'd do something like: int i; cini; and I noticed that it has instead of << and I've read that those are bitwise shifts...and I don't exactly understand what those are...but I think it might be different here...Help...Thanks in advance

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  • Upgrading kubuntu to version 12.10 stops

    - by simendsjo
    It's on the step "Installing the upgrades", says it's "Configuring virtuoso-opensource-6.1", and the last line in the log is "Unpacking linux-headers-3.5.0-17 (from .../linux-headers-3.5.0-17_3.5.0-17.28_all.deb) ..." .. And the application just sits there doing nothing. Trying to abort now says "The system could be in an unstable state if you cancel the upgrade", so I'd rather not do that :/ Any idea how I can kick the upgrade into gear again? EDIT: I closed the program, ran dpkg -configure (which failed). Booted ran configure again, some configuration, and things are up and running again. I'm leaving this open as I have no idea what the root cause was.

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  • I need some help creating a non-binary tree (or some other data structure that will better solve my problem)

    - by EDO
    I have about ten lists of numbers and some strings. Each list has about <= 30K lines. Each line on a list has a distinct number. I need to build an efficient way of finding all the lines in each list that has the same 'control' number (or key for dB guys) and comparing what is in their string parts. I am writing this in Java. I have thought about using trees but my brain cells are about burnt now. I need some help.

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  • Help with ubuntu 11 mis-displays

    - by Alfa9Dev
    So, I sea This tutorial, and I exectued this line in my terminal : sudo add-apt-repository ppa:lubuntu-desktop/ppa & sudo apt-get install lubuntu-desktop and my left-side panel changed abit, while the Dash Home changed to become like so : http://i43.tinypic.com/2vuc0lj.png ! help ! How can I change to the ubuntu default style or ppa ! because whene I run this : sudo add-apt-repository ppa:ubuntu-desktop/ppa it gives me the follwing notice : gpg: requesting key A1231595 from hkp server keyserver.ubuntu.com gpg: key A1231595: "Launchpad PPA for Ubuntu Desktop" not changed gpg: Total number processed: 1 gpg: unchanged: 1 does this mean that the ubuntu ppa isn't changed or what ?? Please, help any help would very appreciated :)

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  • How to properly position 3rd level menu [migrated]

    - by drewrowalnd
    If you look here: http://snippetmagazine.com/ under about isl-board of trustees you can se I have created a third level dropdown, but how can I properly align that drop down? Below you will see my css. #menudiv { width: 999px; float: left; clear: left; height: 250px; background: url(images/top_bg.png) no-repeat; margin-top: 10px; } mainmenu { width: 948px; height: 63px; float: left; margin-left: 16px; margin-top:5px; border: 1px solid #D5D5D5; -moz-border-radius: 3px; -webkit-border-radius: 3px; -webkit-box-shadow: 0px 1px 2px rgba(0, 0, 0, 0.1); -moz-box-shadow: 0px 1px 2px rgba(0, 0, 0, 0.1); background:url(images/nav_bg.gif) repeat; } .mainnav { margin: 0; padding: 0; list-style: none; } .mainnav * { margin: 0; padding: 0; list-style: none; } .mainnav ul { position: absolute; top: -999em; display: none; } .mainnav li { float: left; position: relative; z-index: 999; height: 63px; line-height: 55px; margin-right: 0px; border-right: 1px solid #D5D5D5; } .mainnav li.last { border-right: none; } .mainnav a { display: block; font-size: 19px; margin: 0; color: #cc9900; font-family: Copperplate, Arial, Helvetica, Sans serif; font-weight:600; text-decoration: none; padding: 3px 13px 3px 12px; color: #555; text-shadow: 0 1px 1px white; } .mainnav li:hover { text-decoration: none; border-bottom: solid 0px #ccc; background: white; } .mainnav ul li{ width: 132px; } .mainnav li:hover ul, ul.mainnav li.sfHover ul { left: 0px; top: 50px; padding-top: 0px; width: 132px; border-bottom: solid 0px #eaeaea; background: url(images/nav_dropdown_shadow.gif) repeat-x top; padding: 6px 0 0px 0px; margin: 13px 0 0 -1px; border: 1px solid #D5D5D5; -moz-border-radius-bottomleft: 3px; -webkit-border-bottom-left-radius: 3px; -moz-border-radius-bottomright: 3px; -webkit-border-bottom-right-radius: 3px; -webkit-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.1); -moz-box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.1); width: 175px; border-bottom-left-radius: 3px 3px; border-bottom-right-radius: 3px 3px; } .mainnav li:hover li ul, .mainnav li.sfHover li ul { top: -999em; } .mainnav li li:hover ul, ul.mainnav li li.sfHover ul { left: 132px; top: -8px; } .mainnav li:hover ul, .mainnav li li:hover ul { top: -999em; } .mainnav li li { color: #555; display: block; padding: 0px; height: auto !important; border: none; width:175px; background: url(images/nav_dropdown_bg.gif) repeat; margin: 0; } .mainnav li li a:link, .mainnav li li a:visited { display: block; height: auto !important; line-height: 30px; color: #333; font-weight: normal; font-family: arial, helvetica, sans-serif; font-size: 12px; border: none; margin: 0; padding-left: 10px; overflow:hidden; border-bottom: 1px solid #E3E3E3; } .mainnav li li :hover{ } .mainnav li li a:hover { background: none; color:#555 ; border-bottom: 1px solid #E3E3E3; }

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  • HTML Tidy for NetBeans IDE 7.4

    - by Geertjan
    The NetBeans HTML5 editor is pretty amazing, working on an extensive screencast on that right now, to be published soon. One thing missing is HTML Tidy integration, until now: As you can see, in this particular file, HTML Tidy finds 6 times more problems (OK, some of them maybe false negatives) than the standard NetBeans HTML hint infrastructure does. You can also run the scanner across the whole project or all projects. Only HTML files will be scanned by HTML Tidy (via JTidy) and you can click on items in the window above to jump to the line. Future enhancements will include error annotations and hint integration, some of which has already been addressed in this blog over the years. Download it from here: http://plugins.netbeans.org/plugin/51066/?show=true Sources are here. Contributions more than welcome: https://java.net/projects/nb-api-samples/sources/api-samples/show/versions/7.4/misc/HTMLTidy

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  • Is there a way to show icons on a git repo folder like tortoiseGit?

    - by shengy
    Is there a way which could let me know all the file status by just looking at the folder view, like what TortoiseHg, TortoiseSVN, TortoiseGit did on windows? Now my git repo folder looks the same as other folders. If I want to view file status I have to type git status in the command line. I want some icons which could inform me the file/folder status at my first glance on the folder view. I'm using Ubuntu 12.04 EDIT I googled it, and what I'm asking for is called the overlay icon.

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  • Announcing: Sun Server X4-8

    - by uwes
    On June 3rd, Oracle announced the latest in its line of workload-specific, enterprise-class servers, the Sun Server X4-8. Co-engineered with Oracle software, these servers are based on the latest Intel® Xeon® E7-8895 v2 processor and are the first to include elastic computing features, maximizing performance by adapting to different workload demands in real time. This server is currently available for quoting, ordering and shipping. This product replaces the Sun Server X2-8.  Please read the Product Bulletin on Oracle HW TRC for more details. (If you are not registered on Oracle HW TRC, click here ... and follow the instructions..) For More Server Information: Why Buy How to Use x86 Server Family oracle.com OTN

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  • ubuntu 14.04 - everything fine except the shutdown

    - by hns
    i've installed ubuntu 14.04 on my old notebook (acer travelmate 2420). everything is fine except the shutdown. it's hanging in the last screen ("ubuntu" with the points beneath - they change their colour properly...as long as i don't press the "on/off" button of the notebook). i've changed this line: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" into this: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=force" doesn't work. can anybody help? i'm a ubuntu beginner, so i maybe don't understand too specific things. thank you.

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  • What does ^+Z do to a process

    - by Kifsif
    In command line I wrote: michael@ubuntu:~$ firefox Firefox launched. Command prompt ($) disappeared. Then I pressed ^+z. The result was: [1]+ Stopped firefox Well, Firefox really stopped. It did not react anyhow. So, I could not close it by pressing the cross of the window. By the way, the menu items 'Tools', and 'Help' somehow showed some signs of life. They showed drop-down lists, but nothing more (no reaction to inner menu items). Well, I could not end Firefox through System Monitor. Could you comment on this case: what happened after pressing ^+z?

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  • lightdm.conf content erased, now stuck in low graphics mode

    - by user79318
    This evening I was attempting to disable the guest account and something went awry. Currently on boot Ubuntu enters low graphics mode. No specific error report. What did I do? Before this error occurred I added a line of code in lightdm.conf to disable the guest account. I think I may have accidentally erased the contents of lightdm.conf. Not entirely sure. I troubleshooted for the past hour using various suggestions from other Questions to no avail.

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  • Video: How To Enable JavaScript IntelliSense

    Check out this How-to Enable JavaScript IntelliSense with DevExpress ASP.NET Clientside objects video: The video walks you through few simple steps it takes to get IntelliSense support for the Clientside objects of our ASP.NET controls. If youd like to see a written version, check out this detailed blog post. Watch the how-to video and then drop me a line below with your thoughts on this excellent feature.   Want to experience a better Visual Studio? Install CodeRush by downloading...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Netbeans 7.0.1 installed but won't run

    - by Dave M G
    I installed Netbeans 7.0.1, and I've made sure to install all the JDKs and JREs I could find. It installed without errors. I also saw this question and made sure I followed all the instructions there as well. I never got any error messages of any kind. So far as I know, it installed okay. However, when I try to run Netbeans, I get no response. If I run it from the command line, after about 30 seconds, the prompt just comes back. There's no error message of any kind to let me know what's wrong. $ /bin/sh "/home/dave/netbeans-7.0.1/bin/netbeans" $ What's the issue, and how do I get Netbeans to run?

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  • What should be the correct ownership of /tmp /var /usr and subdirectories?

    - by sbergeron
    For some reason I think the permissions of those were messed up from a small amount of disk corruption I had. This may be a dupe, I don't know but I googled it and didn't find any mention of it. I need to know how the permissions of them should be set up as currently my computer can't actually use the tmp directory and I can't download anything consequently. I have access to the recovery mode command line but while in sudo user prompts it doesn't seem to work correctly. Also something is wrong with package management and I get dpkg: error: unable to access dpkg status area: read-only file system. I know my system is really messed up but I don't want to have to reinstall AGAIN.

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  • Part 4 of 4 : Tips/Tricks for Silverlight Developers.

    - by mbcrump
    Part 1 | Part 2 | Part 3 | Part 4 I wanted to create a series of blog post that gets right to the point and is aimed specifically at Silverlight Developers. The most important things I want this series to answer is : What is it?  Why do I care? How do I do it? I hope that you enjoy this series. Let’s get started: Tip/Trick #16) What is it? Find out version information about Silverlight and which WebKit it is using by going to http://issilverlightinstalled.com/scriptverify/. Why do I care? I’ve had those users that its just easier to give them a site and say copy/paste the line that says User Agent in order to troubleshoot a Silverlight problem. I’ve also been debugging my own Silverlight applications and needed an easy way to determine if the plugin is disabled or not. How do I do it: Simply navigate to http://issilverlightinstalled.com/scriptverify/ and hit the Verify button. An example screenshot is located below: Results from Chrome 7 Results from Internet Explorer 8 (With Silverlight Disabled) Tip/Trick #17) What is it? Use Lambdas whenever you can. Why do I care?  It is my personal opinion that code is easier to read using Lambdas after you get past the syntax. How do I do it: For example: You may write code like the following: void MainPage_Loaded(object sender, RoutedEventArgs e) { //Check and see if we have a newer .XAP file on the server Application.Current.CheckAndDownloadUpdateAsync(); Application.Current.CheckAndDownloadUpdateCompleted += new CheckAndDownloadUpdateCompletedEventHandler(Current_CheckAndDownloadUpdateCompleted); } void Current_CheckAndDownloadUpdateCompleted(object sender, CheckAndDownloadUpdateCompletedEventArgs e) { if (e.UpdateAvailable) { MessageBox.Show( "An update has been installed. To see the updates please exit and restart the application"); } } To me this style forces me to look for the other Method to see what the code is actually doing. The style located below is much easier to read in my opinion and does the exact same thing. void MainPage_Loaded(object sender, RoutedEventArgs e) { //Check and see if we have a newer .XAP file on the server Application.Current.CheckAndDownloadUpdateAsync(); Application.Current.CheckAndDownloadUpdateCompleted += (s, e) => { if (e.UpdateAvailable) { MessageBox.Show( "An update has been installed. To see the updates please exit and restart the application"); } }; } Tip/Trick #18) What is it? Prevent development Web Service references from breaking when Visual Studio auto generates a new port number. Why do I care?  We have all been there, we are developing a Silverlight Application and all of a sudden our development web services break. We check and find out that the local port number that Visual Studio assigned has changed and now we need up to update all of our service references. We need a way to stop this. How do I do it: This can actually be prevented with just a few mouse click. Right click on your web solution and goto properties. Click the tab that says, Web. You just need to click the radio button and specify a port number. Now you won’t be bothered with that anymore. Tip/Trick #19) What is it? You can disable the Close Button a ChildWindow. Why do I care?  I wouldn’t blog about it if I hadn’t seen it. Devs trying to override keystrokes to prevent users from closing a Child Window. How do I do it: A property exist on the ChildWindow called “HasCloseButton”, you simply change that to false and your close button is gone. You can delete the “Cancel” button and add some logic to the OK button if you want the user to respond before proceeding. Tip/Trick #20) What is it? Cleanup your XAML. Why do I care?  By removing unneeded namespaces, not naming all of your controls and getting rid of designer markup you can improve code quality and readability. How do I do it: (This is a 3 in one tip) Remove unused Designer markup: 1) Have you ever wondered what the following code snippet does? xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480" This code is telling the designer to do something special with this page in “Design mode” Specifically the width and the height of the page. When its running in the browser it will not use this information and it is actually ignored by the XAML parser. In other words, if you don’t need it then delete it. 2) If you are not using a namespace then remove it. In the code sample below, I am using Resharper which will tell me the ones that I’m not using by the grayed out line below. If you don’t have resharper you can look in your XAML and manually remove the unneeded namespaces. 3) Don’t name an control unless you actually need to refer to it in procedural code. If you name a control you will take a slight performance hit that is totally unnecessary if its not being called. <TextBlock Height="23" Text="TextBlock" />   That is the end of the series. I hope that you enjoyed it and please check out Part 1 | Part 2 | Part 3 if your hungry for more.  Subscribe to my feed CodeProject

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  • Facing Problems While Installing Java

    - by user100381
    First When i downloaded java from official website i got confused how to install it. den i searched it on software center and i got it. but wen i install it, it starts but instantly stops and the line highlighting the installation status in progress tab doesn't move forward.den i searched on internet and tried installing it by terminal but he terminal says that u have to first configure something that i dont know but it tells me to run this command-"sudo dpkg-configure -a" and when i run this command the terminal process stops in the middle and even after leaving it for about an hour it doesn't proceed further.. after that when i press the close button of the terminal if shows that some tasks are in progress and closing the terminal would...bla bla bla... so i am greatly confused because even other software's like gimp image editor and all are not getting installed.. please help me..!!

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  • How do I recover a site after WordPress' Automatic Update has failed?

    - by Metacom
    I manage several WordPress websites, and successfully recently used the Automatic Upgrade feature to bring them up to 3.1. However, on one of the sites, I received a 503 (I believe it was 503). After that I was presented with "The service is unavailable." whenever I tried to access any page, including the index page, wp-admin, etc. I had similar problems before when a WordPress site got stuck in maintenance mode, and all I needed to do was login via FTP and rename or delete the .maintenance file. I tried that in this case, but that didn't do the trick. I am now presented with "Fatal error: Call to undefined function require_wp_db() in **\wp-settings.php on line 71" I can't figure out how to fix this problem, and I was wondering if anyone else had any ideas. Any suggestions are appreciated! Thank you for reading.

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  • Can't open any of my drives/devices(not USB drive)

    - by Anontu
    I can't open any of my computer drives (:c/,:d/.....) Every time i tried to open the drives, the following notice appeared: (i'm new in Ask Ubuntu,so,i can't upload the snapshot,i need 10 reputations to do that) **Unable to access "__ Volume"** error mounting/dev/sda7at/media/MyPC/__Volume:Command-Line 'mount-t "ntfs"-o "uhelper=udisk2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177""/ dev/sda7""/media/MyPC/__Volume"' exited with non-zero exit status 14:The disk contains an unclean file system (0,0).| Metadata Kept in Windows cache,refused to mount. Failed to mount '/dev/sda7':Operation not permitted The NTFS partition is in an unsafe state.Please,resume and shutdown Windows fully(no hibernation or fast restarting),or mount the volume read-only with the 'ro' mount option. I have Windows side by side Ubuntu 13.04 in my computer and i have done (like-Shutting down Windows properly...) things as these in the notice. But it's not working.

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