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  • Attach Keyboard/Mouse to X Display in Dell XPS L502x Dual Video Cards (Intel/Nvidia HDMI)

    - by lcoronelp
    The idea: Use a second monitor in Dell XPS L502x with HDMI port in Ubuntu 12.04 The process: I connect the HDMI cable to monitor. I read this and I have video in HDMI monitor with Bumblebee and this commands: optirun nvidia-settings -c :8 DISPLAY=:8.0 firefox I have created a second keyboard/mouse master group with xinput with this solution. The problem: The second monitor (Display 8) doesn't recognize the keyboard/mouse and I cant use it. The question: Do you know some command to attach the keyboard/mouse master group to Display 8? I think that xinput -set-cs may work but it does not.

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  • Ubuntu 13.10 - Black screen after logging in after installing nVidia drivers

    - by Javacow
    I recently installed Ubuntu 13.10 in a dual-boot with Windows 7, so I'm still quite new to using Linux. Most things were working fine, and I could log in normally (apart from the first login after install, which spent about 2 minutes on a black screen before going to the desktop). I installed the restricted Nvidia drivers with the command: sudo apt-get install nvidia-current Since then, after I enter my password and log in (the login screen itself works perfectly), I get a black screen with the cursor and nothing happens from that point onwards. Basically, what I would like to know is how to get back to the normal Ubuntu desktop and (hopefully) still be able to use Nvidia drivers.

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  • Disabling IPv6 on a single interface

    - by ijw
    I'm slightly weirded out by the fact that Ubuntu won't process ipv4 DHCP unless you explicitly tell it to, but will happily take ipv6 RAs unless you tell it not to. Is there any way to change the default behaviour to be 'do nothing unless I explicitly turn it on'? (Note to answerers: I'm not looking to globally disable ipv6, or completely turn off autoconf. I'm looking to disable autoconf by default (as in, I don't want ipv6 unless I say so in /etc/network/interfaces, in the same way that I don't just get a v4 address unless I've explicitly turned on dhcp). What's happening is that, for any interface that's up - e.g. has an ipv4 config - a v6 address tends to just turn up on the interface as well, despite the fact that I've not enabled that explicitly. The solutions to date are fine as far as they go, but if I disable v6 or autoconf globally, I can't then re-enable v6 on a per-interface basis with a simple command in /etc/network/interfaces. I'm fairly sure I'm asking for the moon on a stick, mind you.)

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  • Navigate Quickly with JustCode and Ctrl+Click

    Ctrl + Click is a widely used shortcut for Go To Definition in many development environments but not in Visual Studio. We, the JustCode team, find it really useful so we added it to Visual Studio. But we didn't stop there - we improved it even further. Read on to find the details. With JustCode you get an enhanced Go To Definition. By default you can execute it in the Visual Studio editor using one of the following shortcuts: Middle Click, Ctrl+Left Click, F12, Ctrl+Enter, Ctrl+B. The first usage of this feature is not much different from the default Visual Studio Go To Definition command use it where a member, type, method, property, etc is used to navigate to the definition of that item. For example, if you have this method:         public void Start()         {             lion = new Lion();             lion.Roar();         } If you hold Ctrl and click on the usage of the lion you will go to the lion member definition. If you hold Ctrl and click on the Lion you will go to the Lion class definition. What we added is the ability to easily find all the usages of the item you just navigated to. For example:     public class Lion     {         public void Roar()         {             Console.WriteLine("Rhaaaar");         }     }   If you hold Ctrl and click on the Lion definition you will see all the usages of the Lion type; if you click on the Roar method definition you will see all the usages of the Roar method: And if there is only one usage you will get automatically to that usage. In the examples I use C#, but it works also in VB.NET, JavaScript, ASP.NET and XAML. Why we like this feature? Let me first start with how the Ctrl+Click (or Go To Definition command) is used. We noticed that developers use it especially in what we call "code browsing sessions". In simple words this is when you browse around the code looking for a bug, just reading the code or searching for something. Sounds familiar? In our experience when you go to the definition of some item you often want to know more about it and the first thing you need is to find its usages. With JustCode this is just one click away. Why Ctrl+Click/Middle Click over F12/Ctrl+Enter/Ctrl+B? Actually you can use all of them. But during these "code browsing sessions" we noticed that most developers use the mouse. So the mouse is already in use and pressing Ctrl+Click (or the Middle Click) is so natural. During heavy coding sessions or if you are a keyboard type developer F12 (or any of the other keyboard shortcuts) is the key. We really use heavily this feature not only in our team but in the whole company. It saves us a bit of time many times a day. And it adds up. We hope you will like it too. Your feedback is more than welcome for us. P.S. If you dont want JustCode to capture the Ctrl+Click and the Middle Click in the editor, you can change that in JustCode->Options->General in the Navigation group. Keyboard shortcuts can be reassigned using the Visual Studio keyboard shortcuts editor.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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  • Error applying iptable rules

    - by user3215
    When I try to use iptables command on one of my Rackspace cloud server, I'm getting the following error. I was trying to apply iptable rules with iptables-apply -t 120 /etc/iptables.rules and iptables-restore < /etc/iptables.rules FATAL: Could not load /lib/modules/2.6.35.4-rscloud/modules.dep: No such file or directory iptables-restore v1.4.4: iptables-restore: unable to initialize table 'filter' Error occurred at line: 2 Try `iptables-restore -h' or 'iptables-restore --help' for more information. How could I fix this?. Anybody has any technique?

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  • Configuring Network without Default Gateway

    - by Homayoon
    I'm trying to connect my desktop and laptop using an ethernet connection. I usually configure network from the command line but this time I decided to give Network Manager a try, so I went to Network Connections, and selected manual IP configuration. At first I left the default gateway field blank, since I don't need a default gateway. Turned out network manager doesn't let me save the connection unless I enter that field, but entering a phony gateway messes up with my Internet connection. Anyway to do this setup?

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  • What are the benefits vs costs of comment annotation in PHP?

    - by Patrick
    I have just started working with symfony2 and have run across comment annotations. Although comment annotation is not an inherent part of PHP, symfony2 adds support for this feature. My understanding of commenting is that it should make the code more intelligible to the human. The computer shouldn't care what is in comments. What benefits come from doing this type of annotation versus just putting a command in the normal PHP code? ie- /** * @Route("/{id}") * @Method("GET") * @ParamConverter("post", class="SensioBlogBundle:Post") * @Template("SensioBlogBundle:Annot:post.html.twig", vars={"post"}) * @Cache(smaxage="15") */ public function showAction(Post $post) { }

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  • Wireless connect- Webcam activation- MBR repair/rebuild

    - by Rick
    Evening: I've NEVER had so much difficulty with Ubuntu. I got "Ubuntu Made Easy" and couldn't believe it hasn't done a damn thing to help solve the problems!!! #1. Since install of 12.04 I haven't been able to connect to wireless. Have done everything I can find/think of. Laptop indicates it's receiving wireless. Ran all updates, restricted extras, etc. NOTHING!! Tried to find how to activate built-in webcam (it worked when I installed O.S.) NOTHING; tried to find MBR repair/rebuild terminal command.. NOTHING!!! The book has has been useless, so far!! I really have to solve these problems, otherwise laptop and UBUNTU are worthless!!! Hope someone can help me out with any or all the problems I've listed. Sure would appreciate it!!!!!!!!!!! (laptop HP 2000-210US) Thanks: Rick

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  • Backup and the evil RETAINDAYS option

    - by TiborKaraszi
    "So what bad has this option done?", you probably as yourself. Well, not much, but I find it evil because it confuses people, especially those new to SQL Server. I have many times seen people specifying something like 3, and expect SQL Server to keep the three most recent backups in the backup file and overwrite everything which is older than that. Well, that is not what the option does. But before we go into details, let's look at an example backup command which is using this option: BACKUP DATABASE...(read more)

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  • Looking for menu-driven coding platforms

    - by user2634047
    Can anyone point me to an application development environment that uses menu-driven coding? This would mean where commands, variable names, etc. are not keyed in, but rather are selected from a menu of context-specific options. For example, the user selects an If...then command from a menu of commands, and is then presented with a menu of variables to choose from for the the 'if' conditions(s) (or creates new variable(s) on the fly via the menu), and is then presented with a menu of applicable functions that are applicable to the selected variable (e.g., val()), and so on until the If...then statement has been fully coded. The idea is that the user never types any portion of the code, but selects all code elements from a menu, or defines them on the fly via the menu. Thanks.

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  • No GUI after upgrading from 12.04 to 14.04.1

    - by Kalpit
    Yesterday I upgraded Ubuntu version from 12.04 to 14.04 from update manager. After upgrading it, my system got automatically restarted and now I am not able to switch to GUI mode. Its showing me command prompt mode only. I have tried ctrl + alt + f7 & sudo apt-get install Ubuntu-desktop And all but its not responding. I am newbie in Ubuntu so I don't have much idea that what's going wrong with it. How can I switch to GUI mode now.

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  • Launch Rhythmbox using a Keyboard shorcut

    - by palerdot
    I use Rhythmbox all the time in my Ubuntu. Is it possible to have a custom shortcut like Ctrl+R in Ubuntu, which can launch the Rhythmbox window, even if it is playing in the background ? Since, the emphasis of Linux OS flavors is to use keyboards as much as possible instead of mouse, i thought this functionality might tremendously help me in my Ubuntu environment. The Keyboard shortcuts sections asks for a command; So, I'm not able to figure out how to give a custom keyboard shortcut to a program like Rhythmbox. I'm using 12.04 if that helps. Thanks.

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  • Can I do a git merge entirely remotely?

    - by CaptainAwesomePants
    My team shares a "work" branch and a "stable" branch. Whenever a particular work branch is approved for further testing/release/etc, we merge it into stable. No code is ever checked directly into the stable branch. Because of this, merge conflicts simply won't happen, and it seems silly to pull down the work branch and the stable branch, merge them, and then push the changes back. Is there a git command to ask a remote git server to commit a merge of two branches that it already knows about?

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  • ubuntu-support-status error

    - by Robert Vila
    Running Natty, I read: "The ubuntu-support-status command will print the exact status of your system." I typed: $ ubuntu-support-status Traceback (most recent call last): File "/usr/bin/ubuntu-support-status", line 105, in <module> (still_supported, support_str) = get_maintenance_status(cache, pkg.name, support_tag) File "/usr/bin/ubuntu-support-status", line 37, in get_maintenance_status raise Exception("No date tag found") Exception: No date tag found Does someone know why can this happen. Could it be because is it running on a Mac. How can this be fixed?

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  • Why does 'quickly package' fail with "An error has occurred when creating debian packaging"?

    - by slashcrack
    I've got a big problem with packing my quickly application for the Ubuntu App Showdown. When I try to package or submit my application, I get some warnings: quickly package ........ ---------------------------------- WARNING: syntax errors in facebook/FacebookWindow.py: encoding declaration in Unicode string (FacebookWindow.py, line 0) WARNING: the following files are not recognized by DistUtilsExtra.auto: AUTHORS~ facebook/AboutFacebookDialog.py~ facebook/FacebookWindow.py~ facebook/PreferencesFacebookDialog.py~ facebook/__init__.py~ facebook_lib/AboutDialog.py~ facebook_lib/Builder.py~ facebook_lib/PreferencesDialog.py~ facebook_lib/Window.py~ facebook_lib/__init__.py~ facebook_lib/facebookconfig.py~ facebook_lib/helpers.py~ setup.py~ ---------------------------------- An error has occurred when creating debian packaging ERROR: can't create or update ubuntu package ERROR: package command failed Aborting What does the second warning mean? How do I solve those warnings? I want to submit my app to the Ubuntu App developer Showdown into my PPA and it doesn't work. Thanks for any answer.

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  • How can I install an old version of libc on 12.04 and is it safe to do so?

    - by mathematician1975
    I am building an application on 12.04 and I need to run it on an embedded device. The device has libc-2.8.90.so on it and my dev machine has libc-2.15.so on it. I would like to install libc-2.8.90 onto my dev machine and attempt to link it to my application. I have searched at the Ubuntu software centre for libc-2.8.90 but I cannot find anything resembling it. Is there a way to install this on my machine from command line?? Also will my system be safe having 2 installed versions of libc at the same time? Can it lead to any instability?

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  • Installing linux on OCZ RevoDrive3 x2

    - by user2101712
    First of all, here is the configuration of my computer: Motherboard: Asus H87Plus RAM: Corsair Vengeance 32GB Processor: Intel i7 4770 Drive: OCZ RevoDrive 3 x2 (240 GB) (OCZ Revodrive3 is a PCIe module) I am trying to install the latest version of Ubuntu Desktop (13.10). The problem is that in the UEFI (bios) the drive shows up as a 240 GB drive, but in the Ubuntu installer it shows up as two 120 GB drives. If I install Ubuntu in any of these two drives, it never boots. The screen flickers a few times and comes back to the UEFI menu. I have tried reading up and have come across information that the drive has a "fakeraid", and the solution is to use dmraid. However, when I give the following commands in the terminal (from live CD): # modprobe dm_mod # dmraid -ay it says: no raid disks. And the following command: # ls -la /dev/mapper/ just shows /dev/mapper/control How can I install Ubuntu on my computer? what is the correct method?

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  • Is there a way to recover a file that I have deleted but is still open somewhere?

    - by George Edison
    This question is related to How to recover deleted files? but it is slightly different in nature. Suppose I have a file named ~/something open in a text editor. Further suppose that I open a terminal and run the following command while the file is still open in the text editor: rm ~/something This will delete the file. Now suppose that I changed my mind and wanted to get the file back. The file is still open in the text editor, so it hasn't been removed from the disk or filesystem yet. Is there any way to recover it?

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  • fglrx installation without success - gl_conf issue

    - by Lucio
    I followed the steps of this guide. I've installed the drivers without any problems with sudo dpkg -i fglrx*.deb. The next step is Generate a new /etc/X11/xorg.conf file, but I can't do this due to the following reason: When I enter sudo aticonfig --initial -f the terminal show me this output: sudo: aticonfig: command not found This problem is caused by an error with the symbolics links into the fglrx directory. Look at this section, where you can see -how to fix it- but it doesn't work for me. Why it doesn't? Because after I enter sudo update-alternatives --auto gl_conf the terminal show me this: update-alternatives: error: no alternatives for gl_conf. What I have to do to fix this problem? GC: ATI RadeonHD 6670

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  • VMMap - awesome memory analysis tool

    VMMap is a process virtual and physical memory analysis utility. It shows a breakdown of a process's committed virtual memory types as well as the amount of physical memory (working set) assigned by the operating system to those types. Besides graphical representations of memory usage, VMMap also shows summary information and a detailed process memory map. Powerful filtering and refresh capabilities allow you to identify the sources of process memory usage and the memory cost of application features. Besides flexible views for analyzing live processes, VMMap supports the export of data in multiple forms, including a native format that preserves all the information so that you can load back in. It also includes command-line options that enable scripting scenarios. VMMap is the ideal tool for developers wanting to understand and optimize their application's memory resource usage. span.fullpost {display:none;}

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  • How can I launch Matlab 2012 on Ubuntu 12.04?

    - by Mattia
    I have a problem with the MATLAB 2012 installation. After having installed it using alt+f2 and having used gksudo nautilus I have installed MATLAB in the correct folder which is: /usr/local/MATLAB/R2012a Then I inserted the license and the window told "activation complete" or something like that. This made me happy, but only for a while because as soon as I try to search for Matlab within the applications I cannot find it and neither if I try to run matlab into terminal it says: command not found Can someone help me!? Tanks in advance!

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  • How can I reinstall GRUB Bootloader on MBR after installing Kubuntu?

    - by Agnes
    I installed Ubuntu, but then installed Kubuntu over it (formated Ubuntu Partition) because Ubuntu is not compatible with almost any hardware on my PC. Problem is I'm stuck with an old GRUB that says Ubuntu in the options because in my attempts to make it compatible with my hardware I got an old Grub with an image with an Earth that says Debian. How can I replace the GRUB with the one Kubuntu is supposed to install. I don't want to modify just the text, or the command to install on /sdaX, I want to actually re-write the MBR with the latest grub (reinstall the bootloader). Thanks.

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  • How to install g++ in Ubuntu 14.04?

    - by Apoorva sahay
    I have recently installed ubuntu 14.04 in virtual box. Now I want to install g++ 4.7 in it. I am trying this command in terminal but its not working. sudo apt-get install g++-4.7 Reading package list... Done Building dependency tree Reading state information... Done E: Unable to locate package g++-4.7 E: Couldn't find any package by regex 'g++-4.7' But I find gcc was there with Ubuntu 14.04 installation itself. How could I install g++ in ubuntu 14.04 and any version of g++ abouve 4.7.2 is fine with me.

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  • add platform to ubuntu

    - by Med
    I am new in ubuntu (come from Win7), i want to know how can i add evironement variable in ubuntu, because the platform where i use exaggerate "To compile and run SCA composites with OW2 FraSCAti, you also have to set the FRASCATI_HOME system environment variable. FRASCATI_HOME has to point to the directory where the OW2 FraSCAti runtime distribution was extracted". And how can i add it to my path "For conveniance, you can add FRASCATI_HOME/bin to your PATH variable to get the frascati command available in the PATH". Please i'am new, could you explaine me what i do step by step..

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  • upgrade from ubuntu 12.04 to 12.10 failed, now loads "grub rescue"

    - by Greg
    I attempted to upgrade from 12.04 to 12.10 last night. Installation seemed to go fine, and this morning I had a message like "restart now to complete installation". So I restart, get an initial "Loading Operating System ..." message, followed by "error: file not found. Then it kicks into "grub rescue" mode. Previously I have this running as a dual boot (window 7) and I just ran the upgrade to 12.10 via the update manager in ubuntu. Any ideas on what is going on here, or what the error means? I know my way around the command line, but this is above my pay grade. Thanks for any advice.

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