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 launch Tor browser in Ubuntu 12.04

I have installed Tor as per the instructions on the official page. When I type 'tor' into the terminal I get "[notice] Bootstrapped 100%: Done" and then nothing else happens. Is there something else ...
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I need software for working on Controllers like AVR, PIC, ARM and also there simulation on Ubuntu. please help

I need software for working on Controllers like AVR, PIC, ARM and also there simulation on Ubuntu. please help
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ubuntu grub rescue no loaded kernel

I backup my system by tar. And then tar -cxvf the backup file on the another disk ,Start the computer into the grub rescue,error: not found /boot/grub/i-386/normal.mod。 then I did: grub rescue > ...
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36 views

T400 wireless adaptor not work

My wireless card wlan0 on Thinkpad T400 can work for a short while, after each booting into Ubuntu 12.04. But after a while, maybe an hour later, it starts not working. Here are the outputs of ...
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1answer
27 views

Installing Steam on Ubuntu 12.04

I'm having issues with Steam. When I attempt to get it from the USC, it tells me it needs curl. Trying to get curl (using apt-get on the terminal) doesn't work either, instead telling me: Package ...
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Is possible to use postfix with many domains like a host in ubuntu?

I'm trying to install postfix with pop and imap support in ubuntu linux to use it with many domains. Someone knows where i can find a good tutorial ? I hear someone talking about use MySQL to store ...
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43 views

ubuntu 12.04 update manager failure, error 404

I keep getting a very ominous looking red exclamation point telling me to manually check for updates as the package info is outdated, but when I attempt to do so I get an error saying there was a ...
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32 views

How can I this problem in VLC? [closed]

I have a new computer. It's a 64 bit. I have Ubuntu 12.04 on it. When I watch a movie in VLC it'll skip, and the only way to stop it is to restart it. My monitor goes completely black, and immediately ...
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1answer
11 views

Is a permission error causing this?

I'm running an Ubuntu 12.04 server with Digital Ocean and installed zPanel on it, now I'm trying to run Pyd.io in zPanel's public_html and get the following error in the web browser- realpath(): ...
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12 views

Ubuntu 12.04 Apache virtual hosts error

I can't for the love of god enable virtual hosts. After using this guide https://www.digitalocean.com/community/tutorials/how-to-set-up-apache-virtual-hosts-on-ubuntu-12-04-lts i can't access me 2nd ...
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1answer
51 views

How to work around Eclipse Luna/GTK bug 339174 (change to not use oxygen)

The bug is described here: https://bugs.kde.org/show_bug.cgi?id=339174 For me it fails with: java: /build/buildd/oxygen-gtk3-1.0.2/src/animations/oxygencomboboxdata.cpp:87: void ...
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77 views

-Solution- POODLE lighttpd package for Ubuntu 12.04 [closed]

I don't quite understand the reputation system, so forgive me for inappropriately posting if so. I tried to add this as a comment. For those of us using Ubuntu 12.04 or Debian 6 with lighttpd and no ...
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29 views

Define 'Unix-like' and 'Unix-based' operating system [duplicate]

Please explain the relation between 'Unix-like' and 'Unix-based' operating system .
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1answer
23 views

Building 64-bit application on 32bit Ubuntu 12.04

I want to make a 64 cpp application into 32bit Ubuntu. I am getting the following errors during compilation time: In file included from /usr/include/c++/4.6/i686-linux-gnu/64/bits/os_defines.h:40:0, ...
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17 views

Canon EOS 1200D Software needed for ubuntu

I recently bought canon EOS 1200D DSLR. In the package, i had related software for windows and mac but i use ubuntu, so i cannot install this software. My concern is how do i install software ...
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17 views

hardware info of computers in a lan

Need your support for a simple problem. I need to know all the hardware info of the computers connected to my LAN. Is there any way to do that via LAN, without having to ssh to each system?
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20 views

upgrading libc in ubuntu

I am wondering if there is a way to upgrade libc and libstdc++ on ubuntu without installing a new version? I have an old distro and would like to upgrade to newer versions of libc if possible.
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1answer
40 views

Skype opening as 4.0 after I have installed 4.3

I had skype 4.0 installed for ubuntu 12,but go a cannot connect to server error while trying to login. I looked it up and more people updated it to 4.3 by removing the file via terminal. It said it ...
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I'd like to report a bug in 12.04.3 “new hardware support avaible” [closed]

some days ago my dad clicked on "new hardware support avaible" in 12.04.3. It upgraded and never started again, I had to select the previus kernel from the Grub and purged the new one. I'd like to ...
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17 views

Several perl packages (including cpan and re.pl) not working after upgrade from 12.04 to 14.04

Several perl packages stopped working after upgrade from 12.04 to 14.04. For example, cpan gives me: Attempt to reload Scalar/Util.pm aborted. Compilation failed in require at ...
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1answer
36 views

Access Ubuntu SSH Server from Ubuntu Desktop

Hi I have a Ubuntu Server and I have configured public and private key on that server. Previously I was using Windows 7. So I just installed Putty and was accessing my Ubuntu Server from Windows 7 ...
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29 views

Samba - shared CUPS printer not printing

Hello fellow StackExchangers, I tried running CUPS+Samba on a 12.04 to share a printer (Canon MP550) with a couple of windows clients. CUPS is showing the printer, not indicating any trouble. The ...
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12 views

Unable to connect to Wifi. Restarting networking service on Ubuntu 12.04 fails

I unable to connect to WiFi despite entering the WiFi password correctly. But I am able to connect to the internet via a wired connection. I tried restarting the networking service. I got the ...
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1answer
49 views

save in gedit without ~ in virtualbox

How can I save in gedit whilst using ubuntu 12.04 in virtualbox into a shared folder without ~ being added to the end of the file name? If I try the answers suggested here then I cannot save at all. ...
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1answer
31 views

Can't upgrade from Ubuntu 12.04.5 (precise pangolin) to 14.04.1 (Trusty Tahr)

I am currently running Ubuntu 12.04.5 (LTS) and want to upgrade to Ubuntu 14.04.1 (LTS). Unfortunately, when I open up the update-manager it gives me an option to upgrade to 12.10, I don't want to ...
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30 views

Is Ubuntu 12.04 still stable today?

I installed Ubuntu 14.04 in my HP Pavilion g6-1030se laptop, but I have a problem in developing java games. My laptop became slow. Is it ok if i go back to Ubuntu 12.04? Is it still stable today?
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154 views

How do I address CVE-2014-3566 (POODLE) for lighttpd (1.4.28) on Ubuntu 12.04? [duplicate]

As most of you know, CVE-2014-3566 (AKA POODLE) involves weaknesses in SSLv3 on clients and servers. See https://securityblog.redhat.com/2014/10/15/poodle-a-ssl3-vulnerability-cve-2014-3566/ for more ...
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18 views

How to reset zoneminder username

I had a problem with firefox and removed it fron Ubuntu 12.04. Then I fixed the problem and reinstalled it. But, when I try to login to zoneminder the username and password were blank. I installed ...
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30 views

How do I manually load CUDA driver? [closed]

I run Linux Mint 17 x64, and I've installed "recommended" nvidia-331 driver (331.38) via "driver manager" menu. Also, nvidia-cuda-toolkit's been installed as well. If I run GUI terminal, I can launch ...
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1answer
20 views

Tor “Failed to parse/validate config”

I was using Tor completely fine last night in Ubuntu 12.04. I installed TorChat then when I went to use it today I get the following error message. Oct 15 22:45:57.888 [notice] Initialized libevent ...
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11 views

Disable unity-greeter dynamic switching (12.04)

Ubuntu 12.04 Unity greeter has introduced selected user dynamic background, that means that when selecting a user from the available users list the background will change to reflect the selected ...
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19 views

How do I fix a problem in installing Ubuntu on my Lenovo 560G laptop?

I have installed Ubuntu in my system many times and worked well and installed the same OS in other laptop then also it went smooth. Today I tried to install Ubuntu 12.04 LTS in my friend's Lenovo ...
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19 views

Wifi drivers, cannot view the right wifi drivers i can only see nvidia so i cannot go wirelessly

I am trying to go wireless but I cannot see the broadcom drivers in additional drivers. my Ubuntu version is 12.04 lts so I cannot connect without a Ethernet cable and when i typelshw it popped up: ...
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18 views

How to debug intermittent boot problem?

My ubuntu 12.04.5 LTS (actually, a mythbuntu) has started to fail to boot. It's intermittent (happens ~25% of the time). I keep up to date with software--currently at 3.13.0-36-generic kernel ...
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1answer
24 views

No such file or directory net/bpf.h

I am trying to run the make command and I got the error fatalerror: net/bpf.h: No such file or directory. I looked up online and found this link : http://www.joewein.net/info/sw-net-bfh-error.htm ...
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1answer
26 views

I'm running ubuntu12.04. Lost wireless connection then lost wired connection

I've been searching the internet for some answers but can't seem to find any specifics. I tried changing the Network Manager file from "false" to "true" but I could not get rid of "ifupdown(eth0)". ...
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2answers
34 views

How to add running program icon to left-side bar? [duplicate]

As in question, how can we assign an icon here? Regards
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24 views

Password authentication failed for user bucardo

So basically when I tried to proceed with my Bucardo installation (using bucardo_ctl install) with these settings: Current connection settings: 1. Host: localhost 2. Port: 5432 ...
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How do I copy jsp files into webapps directory of Tomcat in ubuntu 12.04?

I'm new to ubuntu. I installed java and Tomcat7 in ubuntu. I developed project in another directory. I want to copy those files into webapps directory under Tomcat to execute the project. But I am ...
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1answer
25 views

zotero does not find pdftext & pdfinfo

I am using the Firefox extension Zotero on Ubuntu LTS 12.04. Zotero complains about missing PDF tools, though: To use this feature, you must first install the PDF tools in the Search pane of the ...
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27 views

How do I remove ubuntu 14.04 on /dev/sda6 installed alongside ubuntu 12.04 on dev/sda1

I did a silly thing. I installed Ubuntu 14.04 alongside Ubuntu 12.04. I want to get rid of ubuntu 14.04 (dev/sda6). Here is my gparted: How do I remove sda6 and merge it with sda1 in ubuntu 12.04. ...
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24 views

Ubuntu 12.04 - seemingly random freezes

I am running Ubuntu 12.04 and I have experienced random freezes when running a number of different applications (I am also researching known bugs in those applications). Once the machine locks up, ...
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41 views

ERROR: No boot disk has been detected or the disk has failed

I've acer-pc which had at the beginning installed oem windows 8 or 8.1 x64. Later I wanted to install custom ubuntu. I checked oem/normal/x86/x64, other windows installations. I've installed os even ...
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28 views

dpkg: dependency problems prevent configuration of linux-image-generic-lts-trusty: [duplicate]

I get this message every time I try to install a program and my linux-image is ver. "linux-image-3.13.0-37-generic" anyone know what to do ...
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25 views

Netgear Ac329U usb modem not detected in ubuntu 12.04

I have a Netgear Ac329U USB modem which works fine with windows. When i plug to linux the dongle is not detected and unable to resolved the issue from the solutions available. I'm using ubuntu 12.04. ...
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How to setup sftp user for web directory

I have an existing user who can no longer ftp to the web directory. How can i check the credentials and access rights for that user? Also i want to setup a new sftp user to a particular web directory ...
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23 views

how to rollback from giving permission to all files

I am new to ubuntu. while working on terminal unfortunately i typed the comment sudo chmod -R 777 / from root so it prints lot of lines with not permitted strings at end..but after some seconds the ...
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35 views

dual boot from windows 7 can't show ubuntu in boot menu

I have windows7 os in my laptop and I want to install ubuntu 12.04 along with windows 7. I have followed the instructions in this link: ...
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16 views

Apache2 SSL configuration Ubuntu 12.04 LTS

I don't know where my mistake is but I can not get the SSL running. I will explain how I did: sudo cd /root sudo openssl genrsa -out server.key 4096 sudo openssl req -new -key server.key -out ...
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49 views

The dash “search your computer and online sources” simply doens't work in Ubuntu 14.04

The dash "search your computer and online sources" simply doens't work in Ubuntu 14.04 Similar problem occured with 12.04... Does anybody knoes how to solve it, because i can't even open the command ...