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• Why won't apt-get install anything after I deleted its cached lists?

  - by Gernot

  Recently I had a problem with the update-manager and search for a solution. On my search I found a post, where someone had the same problem and as solution they told him he should run this command on the terminal: sudo rm /var/lib/apt/lists/* I also run this, and the update-manager worked again. But now, I noticed that apt-get won't install anything. I wanted to install rvm (for ruby) and therefore I needed a few packages (build-essential and curl to be precise). But if I tried to install them, I always get the message that there is no installcandidate for that package... . What can I do to get apt-get working again?

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• unzip can't work well?

  - by sgsheg

  Things like this, my friend send me a package named qcon.zip with his Mac pc. I use ubuntu system,when I use the command to unzip the folder,I found something was wrong.I check the permission,and use another soft named 7z,but it can't work now. when i use the command unzip qcon.zip unzip qcon.zip -d test/ it returns me that: unzip: cannot find or open ”-O, ”-O.zip or ”-O.ZIP. So after install 7z,the command I use , Error: qcon.zip: Can not open file as archive --add the command file--- file qcon.zip it returns qcon.zip: Zip archive data, at least v1.0 to extract So,what can I do now,the folder permission is right.

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• How much time to wait to upgrade to a non LTS release?

  - by Jhonnytunes

  For LTS upgrades the recomendation is wait 3 months or first point release to is where the major bugs are fixed and the release is "stable" for production. What is the recommended amount of time to wait before upgrade to a non LTS release? Im just talking about the desktop version of course. Im asking because found this where say all release from 14.04 will be based on debian unstable: Cutting Edge: Starting with the 14.04 LTS development cycle, automatic full package import is performed from Debian unstable1 This is due to deploying ProposedMigration in the Ubuntu archive. From here.

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• DHCP Fails To Start

  - by user209138

  I just installed Ubuntu 12.0.4 on an HP 8560 laptop. I installed Fog version 29 and everything worked just fine except the DHCP3 package failed to start. When I run the install command it says DHCP3 is installed, but when I type in the following command to start DHCP (sudo /etc/init.d/DHCP3-server start it says the command is not found. Is there a different command for Ubuntu 12? I have been using Ubuntu 10 on my other fog servers and that command works fine.Thank you for your help.

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• How can I make KDE faster in Ubuntu 12.04. It's very slow

  - by Rizwan Rifan

  I installed the kubuntu-desktop package in Ubuntu 12.04 LTS, but the problem is KDE responses very slowly. If I click on an application's icon to run it, it appears after 10 seconds and sometimes does not appear at all. It hangs all the time. The cursor is almost impossible to follow because of the lag. I have read on the Internet that Unity uses more memory and CPU than KDE. But on my PC Unity runs smoothly and KDE does not. So what should I do to make KDE as fast, responsive and smooth as Unity? My specifications are as follows: RAM: 1.5 GB (DDR2) Processor: 3 GHz Dual Core Graphics Card: Intel HD graphics with 256 MB memory.

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• Dependency is not satisfiable: lib32gcc1 in Google Chrome

  - by user2287892

  I've tried to install Google Chrome for 32-bit .deb package. But it gave me the following errors: depends: lib32gcc1 (= 1:4.1.1) but it is not installable depends: lib32stdc++6 (= 4.6) but it is not installable depends: libc6-i386 (= 2.11) but it is not installable depends: libxss1 but it is not installable Currently, I'm using Ubuntu 13.10 (32-bit - i386). So, when i try to install the dependency, it says me that i can't install. I'm totally lost,I don't know what should I do. Thank you.

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• Skype on 12.04 x64 does not start even after purging and reinstalling it

  - by Zevaka

  I am wondering if there's anyone here who managed to use Skype on 12.04. It used to work (ever since I first tried Ubuntu 10.04) flawlessly, but after upgrading to 12.04, it just doesn't start. If I start Skype from terminal, it just says Segmentation fault (core dumped). I tried to remove Skype and installed it from different locations: Skype website (did not install at all, "package error") From official Ubuntu repository (doesn't start at all, segmentation fault) From repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner" (doesn't start at all, segmentation fault) Interesting thing: even if I remove / purge Skype from the system, it still shows up in Unity menu (of course doesn't start). Any help here?

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• Why does the HUD jump around as I type or move my mouse?

  - by Ryan McClure

  I use the Unity Revamped package for my Unity interface. I have noticed that, however, this behavior exists for any account on my computer, even guest, on BOTH the Revamped and the Canonical release of Unity. Here is a link to what it looks like, because it is hard to describe it. I don't know of anyone else who has this issue. I am running Unity 5.16 on Ubuntu 12.04. As an aside, I also have noticed this behavior with a fresh install of 12.10 Beta 1 on a separate partition.

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• How do I disable the "enable/disable wireless" shortcut key on my laptop?

  - by Matthew

  On my Dell Studio XPS 16, I sometimes accidentally hit this key. Wireless becomes disabled, and hitting it again does not re-enable wireless. I have to hit it an odd number of times, then restart my computer to re-enable wireless. I can't imagine a situation in which I would want to disable wireless from my keyboard. Is it possible just disable the key all-together, so I can avoid this problem? On a related note, what package do I file the bug against? I'm happy just disabling the key, but that's really just a workaround.

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• An error when installing MVVM Light templates for VS10 Express

  - by Laurent Bugnion

  If you tried to install the Visual Studio 2010 Express project and item templates of MVVM Light V3 SP1 (with the Windows Phone tools hotfix), you may have encountered an error when unzipping the package, telling you that a file was corrupted. This error was reported to me a couple of times, and I was able to reproduce the issue. I just published a new version that takes care of this issue. If you encountered that error when installing, please download the new version and try again. Note that the error was only there for the Visual Studio 2010 Express version of the templates. No other changes were made.   Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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• Is having 'Util' classes a cause for concern? [closed]

  - by Matt Fenwick

  I sometimes create 'Util' classes which primarily serve to hold methods and values that don't really seem to belong elsewhere. But every time I create one of these classes, I think "uh-oh, I'm gonna regret this later ...", because I read somewhere that it's bad. But on the other hand, there seem to be two compelling (at least for me) cases for them: implementation secrets that are used in multiple classes within a package providing useful functionality to augment a class, without cluttering its interface Am I on the way to destruction? What you say !! Should I refactor?

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• JBoss Application Server 6 disponible, le serveur d'application Java de Red Hat offre le support complet de Java EE 6

  JBoss Application Server 6 disponible Le serveur d'application Java de Red Hat offre le support complet de Java EE 6 La nouvelle version de JBoss, le serveur d'application Java est disponible. Il s'agit de l'un des premiers serveurs à offrir un support complet et prêt pour la production de Java Entreprise Edition 6 (JEE 6), la spécification du langage Java qui peine encore a se faire une place dans les entreprises. JBoss est un projet open-source gratuit, racheté et mené depuis 2006 par Red Hat, qui offre aussi un support payant dans le cadre du package JBoss Enterprise Middleware et de JBoss Enterprise Application Platform. Pour mémoire, GlassFish, ...

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• How to install Edubuntu on a system with low memory (256 Mb)?

  - by int_ua

  I'm preparing an old system with 256 Mb RAM to send it to some children. It doesn't have Ethernet controller and there are no Internet access at the destination. I've chosen Edubuntu for obvious reasons and modified it with UCK trying to minimize memory usage just to install, let alone using it yet. But Ubiquity won't start even in openbox (edited /etc/lightdm/lightdm.conf) because there are no space left on /cow right after booting. I've already deleted things like ibus, zeitgeist, update-manager (no network access after all), twisted-core, plymouth logos. I'm thinking about creating a swap partition on HDD, can it be later added to expand this /cow ? Is there a package for the text-mode installation which is used on Alternate CDs? I don't want to re-create Edubuntu from an Alternate CD. This behavior is reproducible in VM limited to 256Mb RAM.

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• downgrade ppa packages to versions available at a previous point in time

  - by Will

  The backstory is that the normal Intel GPU drivers don't do the various OpenGL extensions that my hobby coding and some games want. So I have to install xorg-edgers and then its happy. However, last Wednesday or so there was an update to xorg-edgers - lots of packages - and it broke badly; the drivers lock up and take the whole computer with them; hard reset required. So how can you downgrade - select package versions in a PPA that represent a point in the past, ignoring versions newer than that?

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• How do I give proper attribution when distributing my modified Ambiance theme?

  - by WarriorIng64

  I made a modified version of 12.04's Ambiance that uses a dark sidebar for Nautilus, and I would like to redistribute it via e.g. gnome-look.org. From the Launchpad page for the light-themes package, it says the themes are available under a Creative Commons BY-SA 3.0 license. The way I understand it, I can distribute my modified theme so long as I provide proper attribution for it and place it under the same license. In this case, who do I attribute as the author of the original theme and where/how should I display this attribution?

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• Alps touchpad detected as mouse dell inspiron n5110

  - by Shota Bakuradze

  Now I know that this has been asked several times here but I couldn't find any decent solution to it. So I am running the latest Ubuntu on my dell n5110 and my touchpad is detected as a mouse, So I don't have the touchpad options avaliable. can't use multitouch and can't disable it either. I have tried the dkms driver: http://people.canonical.com/~sforshee/alps-touchpad/psmouse-alps-0.10/ but when installing it with dpkg I get the following error: ERROR (dkms apport): unable to determine source package for psmouse-alps-dkms Error! Bad return status for module build on kernel: 3.2.0-25-generic-pae (i686) Consult /var/lib/dkms/psmouse-alps/0.10/build/make.log for more information. I have installed all the updates as well. Can someone help me out with this issue?

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• Application won't run when installed in "/opt"

  - by Sam Hewitt

  I've developed a program for the App Developer Showdown, with quickly, in python, and it works as expected when I package and install it normally -in /usr. However when packaged for installation in /opt it doesn't run -and I'm not getting (or can't find) an error message of any sort, as to what the problem might be. I was wondering if someone here has the answer. The app does require root access -using gksudo- to function. I'm fairly new to programming, but not to Linux. Thanks, Sam Launchpad: https://launchpad.net/aplomb

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• Benefits of using the same language for client and server?

  - by Makita

  I'm looking at architecture solutions for a mobile project that will have a web-service/app in addition to native apps. I've been looking at various libraries, frameworks, and stacks like jqm, backbone, parse, and meteor. Meteor, sort of an "open stack package framework", is tightly bound with node.js. There is a lot of talk about the benefits of using the same language both client and server side, and I'm not getting it. I could understand if you want to mirror the entire state of a web application on both client and server but struggling to find other wins... Workflow efficiency? I'm trying to understand why client/server language parity is considered to be a holy grail, any explicit examples or links would be greatly appreciated, thanks!

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• wkhtmltopdf displaying text as blocks

  - by making3

  We're using wkhtmltopdf in a web project (nodejs/compoundjs). We've gotten it working how we wanted on our machines (using the --use-xserver switch). However, when I try to run this on our Ubuntu server 12.04 (without the ubuntu-desktop package), the PDF cannot use the switch. When we disable the switch, the PDF displays any characters as blocks (image below). How do I resolve this without installing ubuntu-desktop and running x server? I've found liberation fonts, which installing ttf-liberation and fonts-liberation did not help. And urw-fonts, but I have yet to find an Ubuntu equivalent. EDIT: It just hit me, this doesn't matter if I'm on the server or not. On my development machine (Ubuntu 13.04 desktop), I can run the following, which produces the same blocks: wkhtmltopdf http://google.com google1.pdf While this prints out the pdf properly: wkhtmltopdf --use-xserver http://google.com google2.pdf My version of wkhtmltopdf is 0.12.0.

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• internal error message pops up after each time system is rebooted

  - by Biju

  I had installed ubuntu 12.04 using wubi. But each time i boot the system an internal error message pops up. As show below:- Executable path /usr/share/apport/apport-gpu-error-intel.py Package xserver-xorg-video-intel 2:2.17.0-1ubuntu4 Problem Type crash Apportversion 2.0.1-0ubuntu7 and so on.. I had earlier upgraded to ubuntu 12.04 from ubuntu 11.10. And encountered the same issue. Hence i uninstalled the OS and reinstalled using wubi. I had posted the same query in ubuntu.com/support (Question Number: 195525) But couldnt find a solution. I am using dell inspiron with intel pentium. Need ur help in resolving this issue. thanking u, Biju

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• YouTube: Up & Running with Twitter Bootstrap

  - by Geertjan

  "Twitter Bootstrap is a free collection of tools for creating websites and web applications. It contains HTML and CSS-based design templates for typography, forms, buttons, navigation and other interface components, as well as optional JavaScript extensions. It is the most popular project on GitHub and has been used by NASA and MSNBC among others." (Wikipedia) Normally, when you read "getting started" instructions for Twitter Bootstrap, you're told to download various things from various sites. Then you're told to set up various folders and files, etc. What if it could be much simpler than that? Spend 7 minutes with me in this (silent) screencast and you'll see a complete development environment for developing applications with Twitter Bootstrap: Two things that could be added to the movie are the JavaScript debugger, the support for responsive design via switching between form factors in the embedded browser and Chrome with the NetBeans plugin, as well as how to convert the application to a native Android or iOS package via in-built Cordova support.

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• How to recover an interrupted 12.04 upgrade from 11.10?

  - by martin

  Ok, I will get right to the point. I was upgrading ubuntu to 12.04 from 11.10 (x64) and right in the middle of the package installation I had a freeze (not ubuntu's fault) forcing me to do a hard reset of my pc. Now the ubuntu installation is completely broken I can only get access via recovery mode. I already tried "apt-get update && apt-get upgrade" and the option to fix broken packages. Nothing changed. So I'm wondering if its possible to fix the broken packages, or maybe to restore before the upgrade? Thank you in advance.

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• Cannot connect to Internet on 11.04 using BSNL EVDO Prithvi Card

  - by Joy

  I cannot connect to Internet using BSNL EVDO Prithvi data card. Went through some websites that offered help, installed wvdial package and tried again, but was unsuccessful. I have Read that, Ubuntu 11.04 automatically detects Data Card, You only need to configure "Network Manager" and it will work, I did exactly that, but the result is same. The OS detects the data card, and the presence of network , but it cannot login. I have read in some forums that Ubuntu 11.04 does not have support for BSNL EVDO Prithvi, is it true? I re-checked the "User ID" and "Password". Its working on Windows. Please help me fix this.

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• How can I keep track of all the websites I've made like a proper business would?

  - by Mile

  A few other students and I are forming a group that wants to become good at what we do: websites. We are making websites for free for friends at the moment in order to get ourselves some experience and to learn from each other. We are about to finish our first website this week. In 6 months time we plan to have a portfolio and hope to start charging for websites. The issue is that we are all beginners and we are unsure about how to keep records of the websites we do. It is important as we may want to maintain a few websites or add to them later on. How does a proper web design business keep records of all info needed? Is there a program or software package we can use?

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• Tons of problems a new user is encountering

  - by Barney

  I've borrowed this laptop from a friend. I wanted to install AdBlock to boost performance. First weird thing was that even though I was on Chrome, Chrome suggested me installing him? So I tried to install ,than it gave me some message about broken dependencies. I Googled and tried to run those commands you guys were suggesting, but than it popped up error messages about everything again. Than I found out that some package called linux image generic is broken, than I tried to find an answer to that, but on the topic it was ” ndk.bhj\spo;ujvsdljvaEOYUFgidgAPIF;hsgvk in other words, I didn't understand anything about it, than there's this thing: E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it? Seriously, when I'm trying to fix an error, there is another one. I'm on something called GNOME. Sooo, where do I start?

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