Fourth LTS (Long Term Support) release of Ubuntu, code-named Precise Pangolin. Released on 26th April, 2012. Only use this tag if your question is version-specific.

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how to restore ubuntu 12.04 or reinstall accidentally removed packages?

I just accidentally removed libnl-3-200, and all the relative packages have been removed, now there is now internet in my ubuntu laptop. Is there anyway to reinstall it and all the relevant packages ...
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6 views

Ubuntu windows content are not refreshing

I recently upgraded the video card on my computer (from Intel HD Graphics to some ATI Radeon card) ton my Ubuntu 12.04. However, there appears that some windows that I open in GNOME Session Fallback ...
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0answers
7 views

Boot problem: Can't find IRQ for PCI INT A

I have Win7 an +Ubuntu12.04 on my computer. It cannot boot I get the error: pci 0000:00:14.0: can't find IRQ for PCI INT A: probably buggy MP table Even after reinstalling ubuntu I get the same ...
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1answer
11 views

Ubuntu 12.04 server no internet connection

I lost power briefly today, when my headless ubuntu server rebooted I could no longer SSH into it. I assumed the drive had failed or something. I took out the drive, put it into a USB SATA enclosure ...
2
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1answer
27 views

Switching to another TTY after running startx and returning breaks Xorg

I've always been curious about an idiosyncrasy of Xorg that seems to happen on every machine I've tried it on; whenever I start a new X instance on a TTY using startx manually (that is, without the ...
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0answers
20 views

32 bit 14.04 and 12.04

I run 14.04 on my main PC and 12.04 on my old PC ( built 2003 ). My old PC runs OK on 12.04. If I load 14.04 it runs so slow it cannot be used. The main PC is OK using 14.04. Specs are: Main PC: ...
1
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1answer
27 views

how to send data from phone to ubuntu 12.04 through bluetooth?

I have a samsung galaxy grand prime phone. I am able to send data from laptop to phone using bluetooth without any problem, but cant do the same from phone to laptop. Thanks in advance!
0
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1answer
10 views

4G dongle (for wireless internet) not detecting unless i restart ubuntu 12.04

I have a Airtel 4G LTE dongle. if i connect it to my laptop while laptop is on dongle is not getting detected. It only gets detected if i restart laptop. thank you in advance!
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0answers
17 views

How to use Sublime Text 2 to edit file in /var/ directory

Recently I've switched over to Ubuntu 12.04 because I really like the GUI and the way it operates apposed to Windows 8. I just set up a Apache server on here so that I am able to continue my hobby of ...
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0answers
14 views

Unable to locate package libcmocka-dev and libcmocka0 [duplicate]

I am trying to install cmocka C unit testing framework. Operating system is Ubuntu 12.04 LTS sudo apt-get install libcmocka-dev libcmocka0 Reading package lists... Done Building dependency tree ...
0
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1answer
25 views

zfs broken after upgrading package spl

Just now I did an apt-get upgrade, which upgraded package spl to 0.6.4.1. After rebooting, my zfs-formatted disk failed to mount. How should I regain zfs functionality? All zfs commands are now ...
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0answers
32 views

why do i get green screen on ITV player

When l use the ITV player app on my driod andriod box the video play back is in green, how can l clear this? All the other I players are okay.
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1answer
213 views

How to install Microsoft Silverlight on Mozilla Firefox browser in an easiest and reliable way that runs on ubuntu 12.04 LTS 64-bit operating system?

I am using ubuntu 12.04 LTS 64-bit OS on my system. I am using Mozilla Firefox 37.0(**Mozilla Firefox for Ubuntu canonical - 1.0)** and Google Chrome(Version 41.0.2272.118 (64-bit)) browsers on my ...
6
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3answers
736 views

libudev.so.1 not found when trying to run spotify

I am trying to run Spotify on Ubuntu 12.04. It used to work some time ago, when I tried to start it today, I got the following error: spotify: error while loading shared libraries: libudev.so.1: ...
0
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2answers
399 views

I can't install IceCat on ubuntu 12.04

I want to install IceCat on Terminal but it doesn't work. $ sudo add-apt-repository ppa:gnuzilla-team/ppa && sudo apt-get update && sudo apt-get install icecat -y Cannot access PPA ...
0
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2answers
3k views

Second monitor recognized but only black screen

I am running 12.04 on a Toshiba Portege laptop. The graphics card is an Intel 945GM/GMS. The 2nd monitor is an Asus (Ancor Communications 22"). When I connect the monitor to the computer the monitor ...
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0answers
1k views

Ubuntu 14.04 (Trusty Tahr) PXE Netboot gives live-installer error

I got an annoying issue while updating my automated Ubuntu installer with Ubuntu 14.04 (Trusty Tahr). I have a razor based(using ipxe) based network boot process to automatically install and configure ...
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0answers
15 views

Specific plugin for internal questions

I don't know exactly whether I am asking on the right StackExchange's community or not, but here is the problem. I am looking for a plugin, app, or anything, where employees can ask questions ...
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0answers
71 views

updated 12.04LTS to 14.04 LTS

I have updated Ubuntu 12.04 LTS to 14.04 LTS using USB stick with out taking backup for my date. After the completion of installation my data was not visible but it is there occupied space from hard ...
1
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1answer
78 views

Google Chrome vanished from applications launcher

I just installed Ubuntu yesterday, after using Windows exclusively since 1995. Today I downloaded Google Chrome because that's my favorite web browser. I followed the directions at How to launch a ...
1
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2answers
716 views

fast move window in ubuntu with keyboard

yes i know about alt+f7 shortcut, but moving with arrows is too slow. also it used to work (fast move to the left/right) with shift-left/right on previous LTS 10.04, but currently on 12.04 doesn't ...
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6answers
4k views

Ubuntu 12.04 boots to TTY1

Alrighty, I have perused the threads already in existence and am finding none of them seem to have the exact combination of variables I've got going. I'm working on a computer using Ubuntu 12.04. ...
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2answers
35k views

Is this a correct way to enable htaccess in Apache 2.4.7 on Ubuntu 12.04

In almost every solution of "How to activate htaccess", they say that the /etc/apache2/sites-available/default file needs to be edited. But there isn't such file in Apache 2.4.7 I read somewhere ...
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3answers
3k views

Ubuntu VirtualBox VM unable to connect to internet in office environment

I have gone through a lot of links available on internet to fix the issue of Ubuntu VM unable to access internet, but I found no solution. I use this laptop in my office (not from home). It could be ...
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2answers
7k views

How to format hard drive

I have installed bootable ubuntu on hard disks but now I can not format them with Disk Utility program. When I try to format it says "One or more partitions are busy on /dev/sdb" for both hard disks. ...
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6answers
38k views

How to start Virtual box machines automatically when booting?

I have many Virtual box machines in my Ubuntu12.04, each time i shutdown or reboot i have to start them one by one. I wanna a help in writing script for automatically autostart the VBox machines ...
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4answers
6k views

How to use GNOME Color Manager in Ubuntu 12.04?

I need to correct colours displayed by my monitor. From the 'Ubuntu Software Center' I have installed the 'GNOME Color Manager', but I cannot use it for making my own colour profile: I have not found ...
1
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2answers
3k views

Why can't I see my Wireless Router a D'Link DIR 615 - Ubuntu 12.04? I can see all the other active wireless connections.

Details: I have a D'Link DIR 615 Router that I have been using for 3 years with Ubuntu 11.10 - with no problems. I have a Dell Inspiron 15R with dual boot of Windows 7 and now, Ubuntu 12.04 - after ...
2
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2answers
5k views

“No screens found” after apt-get upgrade with Intel video card

My Mythbuntu installation (based on Ubuntu 12.04), which has been running without issues for years, suddenly won't start X Windows after doing a simple "apt-get upgrade". Several packages were ...
4
votes
3answers
3k views

liblapack.so file

I want to run a matlab code in ubuntu 12.04 in which error is coming that liblapack.so shared library file is missing. How to get this file installed and from where can I get this file.Please help me ...
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2answers
25k views

Unable to locate package when running apt-get

I installed rvm and it tells me I'm missing some packages: viggy@viggy:~$ rvm requirements Installing requirements for ubuntu, might require sudo password. Skipping `apt-get update` make sure your ...
26
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2answers
55k views

How can I install Qt 5.x on 12.04 LTS?

If you want to develop with QML 2.0 and Qt5, the base packages don't seem to exist in repository for 12.04. What PPA should I add? Is it a binary installer? a compile the toolkit yourself? Those ...
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7answers
6k views

How do I get the IP address of an LXC container?

I've written a few scripts to manage LXC containers, and I can get their IP addresses via ifconfig, assuming I'm connected to the console. I now want to connect to these containers via ssh. How do I ...
5
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2answers
7k views

How to install winexe on Ubuntu?

I don't seem to find a working tutorial on how to install winexe, which is a program that allows for execution of commands on a Windows machine remotely from a Linux machine. None of the tutorials ...
2
votes
1answer
1k views

Change audio quality for bluetooth speakers

I have Logitech bluetooth adapter connected to my hi-fi system. When I connect to the adapter via Ubuntu's default installed bluetooth, and play some music, I get a really low quality sound. It's not ...
26
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2answers
17k views

How to open Nautilus at current command line directory?

I was wondering if anybody knew a command that would allow me to open a Nautilus (if that's the right name for the Ubuntu 12.04 graphic/window explorer) window from the command line at the current ...
2
votes
2answers
8k views

Cannot install gnome shell extensions

I upgrade from 10.04 to 12.04, install gnome 3 and remove unity. My gnome version is 3.4.1. The GNOME Shell extensions is installed and enabled. When I use firefox to visit each extension page in ...
3
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1answer
6k views

Ubuntu Software Centre is gone! How can I get it back?

Right. I am having MAJOR issues. (It would be much appreciated if you would solve them for me! Check my profile for open questions...) Following an answerer... who sorry to say... didn't give a great ...
6
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1answer
574 views

Play sound from different applications on different output devices (speakers, headphones)

I want music (played e.g. via Audacious) to be played on speaker system, and all other sounds produced by other applications (including ubuntu sound effects) to be played on headphones. My computer ...
9
votes
1answer
4k views

How to assign hot-keys to control Rhythmbox?

I wish to assign Ctrl+Space to rhythmbox play/pause but cannot figure out how to do so using the keyboard menu, for whenever I try, it is disabled for i do not know what i am meant to type into the ...
3
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0answers
379 views

How can I make my ubuntu 12.04 act like an external usb hard drive?

Quick breakdown, I have a Roku 2 XS that has a USB port that you can connect a flash drive or external hard drive to. I also have a box running Ubuntu that is the household media storage center. I ...
14
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8answers
25k views

Is Xubuntu really faster than Ubuntu?

I installed xubuntu desktop on top of ubuntu 12.04. The usage of RAM and CPU is in general lower than in ubuntu. But when it comes to some serious computations I did not see much of a difference ...
4
votes
1answer
5k views

How can I prevent ubuntu from mounting particular partitions/deivices?

I would like to stop Ubuntu from mounting my other (Windows') partitions automatically (since I do not need it really often - and especially I would like not to automount "System reserved" partition ...
3
votes
1answer
2k views

Why does installing Grub2 give an “ISO9660: filesystem destruction…” warning?

I have installed Ubuntu 12.04 on my computer, but at the end of the installation it gave me an error and it didn't install grub2. Now I'm trying to install it using the live cd: This is my sudo fdisk ...
11
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3answers
12k views

How to hide the mouse cursor

I'm building a kiosk using Ubuntu Precise on a touch screen. Now I'm looking for the appropriate way to make the mouse cursor disappear. As people know where they are pointing, displaying an arrow ...
22
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5answers
34k views

Why won't Remmina connect to Windows 7 Remote Desktop?

I'm using Ubuntu and I'm trying to connect to another machine in a different network using remote desktop. In Windows7 I have made the following in order to activate remote desktop: I've gone to ...
9
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3answers
8k views

Why does my laptop resume immediately after suspend? [closed]

I seem to be having some problem with suspend mode. Every time I try to suspend my laptop, it just locks the screen. Or maybe it successfully suspends just to resume only an instant after. What could ...
10
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4answers
13k views

Cannot Import VPN connection

Since 12.04 I cannot connect to my VPN. my ovpn file is the following http://email.uoa.gr/help/download/vpn/edunet.ovpn When I try to import the VPN file i get the following error The file ...
2
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6answers
7k views

Huawei 3G modem disconnects after successful connection

I'm having a severe connection problem in Ubuntu 12.04 that renders the OS almost useless. I have a Huawei E352 3G modem. Ubuntu detects it as a mobile broadband connection without any problem. I ...
26
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2answers
51k views

how to find the current version of gnome

I'm using ubuntu 12.04. I tried $ gnome-about –gnome-version gnome-about: command not found $ gnome-session --version gnome-session 3.2.1 Why I need is because my desktop environment doesn't ...