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• How to get Unity interface on my PC?

  - by Prarobo

  I downgraded by PC to 11.04 from 12.04 2 days ago. I was using the Unity interface and I am quite used to it. Today when I started my PC, I got a message (after the login screen showed) saying that my system does not support Unity and it automatically defaulted me to the classic interface. Now when I start my PC, even when the interface choice selected is Ubuntu and not Ubuntu Classic, it falls back to the classic interface. Any advice on how to get Unity back?

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• Out of range on shut down, Log Out, Restart and Suspend

  - by user52889

  I have looked extensively on the help forums but haven't found a similar problem. Whether I want to Shut Down, Restart, Log Out or Suspend, as soon as I select my desired option the screen goes black with a message (Out of Range displayed in the middle of the screen. No combination of keys frees the screen and I have to manually hold the power button on my PC to shut it down. There is no problem on start up. My computer is a dual boot with Windows 7.

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• What is the best way to learn C# programming? [closed]

  - by MSU

  My case I want to get the capability of doing anything in C# from building applications to solving problems. I searched for and tried to read books. Then one of the experts said that reading books will not make any good and that to learn, you have to solve real world problems in C#, and he gave me some problems which I previously solved in C++. The thing is that while I know the internal logic of solving the problem, I don't know how to implement it using C# efficiently. I know the message to pass but not the exact way to pass it. I did a program to solve a problem, then find out there are much easier ways of doing it wherever I was doing it in tougher way. What I need to get hold of the language and get the ability to code in C# proficiently?

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• WinRAR extracting file before checking password? [closed]

  - by opatachibueze

  I tried extracting an encrypted rar file today, and I discovered that I had to wait the same amount of time I'll wait before a file is extracted (extraction reaches 99% completion) for WinRAR to conclude it's the wrong password (winrar message: "CRC failed wrong password or corrupt file?") . My guess is that this file is somewhere on the Computer just before the detection, - it has to be and then gets deleted after it's verified that the password is not the same? Is there anyway I can forcefully get this file from the PC? Thanks.

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• Mount Bluetooth USB in VirtualBox

  - by GoBrewers14

  I originally asked this question here Python Module PyBluez Error and have narrowed it down to basically I can't get VBox to recognize my bluetooth USB. I'm on a MAC OS X 10.9.2. I've installed VirtualBox as well as the Extension Pack and I've installed Ubuntu Desktop 10.04.4 on the VirtualBox. I've searched several Mac forums and this seems to be a common problem w/o a clear solution. Anyways, the question is how can I get VirtualBox to let Ubuntu recognize my bluetooth USB? I've checked 'Enable USB 2.0 EHCI Controller' and added my two bluetooth devices to the filters list. and when I click here to mount the USB I get this error message... Any ideas? Thanks, John

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• Getting Started with 12.04 LTS Problems

  - by mark

  Okay previously I used ubuntu 10.04 in Desktops and Loved it! I bought a newer Toshiba Satellite with an i7 CPU, 8GB Ram, 1TB HD, first thing I tried to do was install Ubuntu 9 on it then I found out it was no longer Supported. (I gave my 10.04 disk away) So I tried installing Windows 7 and experienced SO MANY problems, I am going back to try 12.04. Starting all over again. After installing 12.04 Wireless was Detected yet said it was Disabled by a Hardware Switch. Went read through the Message Boards found Solution which was Sudo rf Kill All. Okay all excited I would finally get my Ubuntu to finally work I rushed back to my laptop from the internet cafe, and went looking for the TERMINAL input on my Ubuntu 12.04, and I cannot find the Terminal. If I can't find the TERMINAL how Can I enter any Sudo Stuff? So I guess the first question is Where is the Terminal Located in 12.04? Thank you.

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• How do I fix the paths of my website?

  - by EASI

  I have Joomla 2.5.7 in my client's server updated recently from 1.6 to 1.7. I did not make that site but I am responsible for it now. I prefer to make a site from zero. Now users area clicking on the menu options and when joomla send them to a meta-url like http://iap.pa.gov.br/acervo they get the message 404 The requested URL /acervo was not found on this server. Would that be because they moved joomla folder from the root to root/iap (name of the site)? If it is, what is the configuration to adapt to that new folder?

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• Process monitoring in Linux environment?

  - by poly

  I'm trying to write a multi threaded/processes application and it need to know how to monitor a process from another process all the time. So here is what I have, I have a 2 processes, each with multiple threads that handle the network part, then another 2 process also with multiple threads that interact with DB and with the network processes, what I need to do is that if for example one of the network processes goes down the DB process start sending to the live network process until the second one is up again. I'm using fifo between the DB and the network process. I was thinking of sending messages with message passing all the time but not sure whether this is a good idea or I need to use some other IPC for this issue, or probably neither is good and I need to use entirely something else?

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• Steam not opening or responding at all

  - by user109409

  The steam client won't open nor does it display any error message. I have tried right click > Games. I ran steam steam://open/games command, but the client just does not respond. Removing it with apt-get remove steam, deleting the Steam directory & the .deb file and reinstalling it, did not work either. This problem only occurred after I used killall steam.sh to force quit it, it was working fine before. I'm running 12.10 on a 64bit laptop with no additional drivers installed. Anyone else have this problem and a possible workaround? Thank you

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• Feedback/bug tracking system for an alpha/beta phase website? [on hold]

  - by randomguy

  I'm developing a website and it's closing onto a private alpha/beta phase. It will be exposed to a small selected group of individuals who will provide a fair amount of feedback. What options do I have for this feedback system? I would certainly like to make it collaborative (excluding email). I could mock up a really simple message board, but would rather use my time elsewhere. The feedback will mainly consist of feature suggestions and bug reports. Edit: Actually, would prefer if it's a free hosted service.

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• Is it better to use a Database or a data structure for network stack?

  - by poly

  I've built a multi threaded messaging application in C and I'm currently using a MySQL Memory table to save the session ID, but I'm not sure whether this was a good decision or not. It works like this, the application sends a message and saves the source session ID in the MySQL table. When the application gets the success response it will remove the session's ID from the MySQL table, or if it received an error response then it will keep the ID to be retried later. I've built it this way so that I don't need to care about building a data structure by myself, and the Database provides flexibility when it comes to querying it. Do you think this is appropriate or do I need to use something else? Please note that the application is expecting to handle a large number of transactions/sec.

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• VirtualBox VERR_ACCESS_DENIED for Ubuntu 11.10

  - by kaspnord

  I installed Ubuntu 11.10 on VBox. The VBox settings I use have been tried and proven for countless other installs I have done in the past. Those are still up and running. On my latest install of Ubuntu 11.10 on Vbox, things were working well in the initially - I installed Guest Additions and everything was fine. All of a sudden (I was just moving my mouse), I get an accessed denied error that freezes my entire Ubuntu environment. I close the virtual machine and restart it, but now I keep getting this error message: Any help would be greatly appreciated.

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• mayavi2 installing has problem (ubuntu 12.04)

  - by user98865

  I'm using ubuntu 12.04 and python 2.7.3-0ubuntu2 is already installed. I have a problem during installing mayavi2 from ubuntu software center. Error message is : Package dependencies cannot be resolved This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be installed at the same time. Details: The following packages have unmet dependencies mayavi2: Depends: python-numpy (= 1:1.6.1) but 1:1.6.1-6ubuntu1 is to be installed Depends: python-numpy-abi9 but it is a virtual package Depends: python (< 2.8) but 2.7.3-0ubuntu2 is to be installed Depends: python-vtk (= 5.4.2-5) but 5.8.0-5 is to be installed I've searched to solve this problem for a long time but I didn't solve yet. What can I do?

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• Event Aggregator.. not getting a response, how to determine completion?

  - by Duncan_m

  I'm rewriting a vehicle tracking application, a google maps based thing.. The users are able to search for a vehicle by typing a few characters of the vehicles "callsign". My application is based around a sort of "event bus" within Backbone.. when a search occurs I send a message on the bus saying something like "does anyone match this?".. If a marker matches the search term it responds with a sort of "yes, I match!".. My challenge arises when no-one matches, I get no response.. it feels a little hacky to "wait a little while" and check if a response has been recieved.. The application is based around Backbone.js and using the Event Aggregator pattern described in the answer to this question on Stack Overflow: http://stackoverflow.com/questions/7708195/access-function-in-one-view-from-another-in-backbone-js Is there a well defined design pattern that might assist me here? Sending a request for a response and not getting any responses?

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• grub-install dummy fails. this is a fatal error

  - by user287764

  I am new to this but I have watched many video how to dual boot Ubuntu with windows 8. I have HP pavilion g6 notebook with 4 GB RAM and Intel i5 processor. I am installing Ubuntu 13.10 with windows 8. In the process of installation I select something else then make some partion as mentioned here. /dev/sda6. 2048 mb of swap area /dev/sda7. 18 GB of / And then I click on install. When installation starts it stuck when grub is installing And message arose as grub install dummy fails. This is a fatal error. I have searched about this on Google many others have faced same problem but none of them helped me. I think the problem is of uefi system. Is there any way so I can dual boot Ubuntu with windows 8.

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• Handling large integers in python [migrated]

  - by Sushma Palimar

  I had written a program in python to find b such that a prime number p divides b^2-8. The range for b is [1, (p+1)/2]. For small integers it works, say only up to 7 digits. But not for large integers, say for p = 140737471578113. I get the error message for i in range (2,p1,1): MemoryError I wrote the program as #!/usr/bin/python3 p=long(raw_input('enter the prime number:')) p1=long((p+1)/2) for i in range (2,p1,1): s = long((i*i)-8) if (s%p==0): print i

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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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• Webmin no longer works - connection rejected

  - by Omeed

  I've had webmin installed on my 12.04 server and everything has been fine until recently. Now when I navigate to https:// myip:10000 I get a message saying the connection attempt is rejected. The last thing I did was set up a cron job to start utorrent webUI. I tried reinstalling but no change. When I check with netstat I see a webmin entrance on port 10000. I've also reset the iptables and allowed everything. I'm at a loss as to what to do now.

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• What's the risk of upgrading over SSH?

  - by C. Ross

  When I run sudo do-release-upgrade over ssh, I get the following message. This session appears to be running under ssh. It is not recommended to perform a upgrade over ssh currently because in case of failure it is harder to recover. If you continue, an additional ssh daemon will be started at port '9004'. Do you want to continue? What is the real risk of upgrading over ssh? How does the additional ssh daemon help mitigate this?

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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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• NVIDIA driver problem after updating to 12.04

  - by patlan

  As the title says I have problems with the driver after updating to 12.04. The GUI doesnt start anymore, I only see the terminal. I have googled this for a couple of days now and have tried different things like running commands for update, upgrade and tried to uninstall and re-install the NVIDIA-drivers but with no success. No matter what I do I get this message: "Error: API mismatch: the NVIDIA kernel module has version 295.40, but this NVIDIA driver component has version 295.49. Please make sure that the kernel and all NVIDIA driver components has the same version." Is there anyway I can fix this from the terminal?

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• Configuring ethernet network

  - by den-javamaniac

  Hi. I've got a wired network connection and if I'm using network manager (hereafter "NM") everything works fine except for the hardware address (it doesn't change). I'm thinking of using /etc/network/interfaces. So, I added some code and it looks like this: auto lo iface lo inet loopback auto eth1 iface eth1 inet static address #corresponding value netmask #corresponding value gateway #corresponding value hwaddress #corresponding value After restarting networking I get the following message: *Reconfiguring network interfaces... #here some help code appears Failed to bring up eth1. The default interface that works with NM is eth0. Please advise on how to handle the problem.

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• Google Drive : meilleure intégration avec le nouveau Gmail, la taille maximale des pièces jointes passe à 10 Go

  Google Drive : meilleure intégration avec le nouveau Gmail La taille maximale des pièces jointes passe à 10 Go Google vient de mettre à jour son espace de stockage en ligne Google Drive. Le but est de l'intégrer de manière beaucoup plus intime avec Gmail en permettant d'insérer les documents depuis Drive directement dans un e-mail sans quitter le compte de messagerie. La manoeuvre est on ne peut plus simple avec l'arrivée d'une nouvelle icône en bas de la fenêtre « nouveau message » pour insérer les documents hébergés dans le Cloud de Google. [IMG]http://ftp-developpez.com/gordon-fowler/Nveau%20Gmail%20et%20G%20Drive.png[/IMG] Parmi les avan...

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• Greenfoot project is read-only

  - by AzharHafiz.com

  I received this message when starting greenfoot on ubuntu 11.10 I'm a newbie and not sure where does the file located (greenfoot) The project is read-only.How and where do I change the permission? You will not be able to create objects or execute methods. Either the access rights of the project directory are set as 'read only' for you, or the whole file system is not writable (is it a CD?). To fully use this project, you must ensure that it is on a writable file system (usually your hard disk), and that you have write permission in the project directory and each file within it. This can often be accomplished by choosing "save as" from the Project menu after closing this dialog.

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• Windows not closing

  - by bhanu

  After login, a number of windows such as Desktop, Downloads, and Pictures opens automatically. When I try to close them one by one closes itself but last one opens all indicating starting file manager in lower panel/status bar. After login all the windows such as desktop,download,home opens automatically when i try to minimise them all minimise. when i try to close them one after another they disappears but not last one which closes itself and reappear along with other indicating message starting file manager in status bar. ( it seems that there are a number of open nautilus windows at startup upon login, and when the user tries to close them, nautilus crashes and tries to restart)

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