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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GPU rendering in Blender

I need to use GPU rendering in Blender 2.76b on Ubuntu 12.04 64bit. It worked right of the box, but very slowly. I installed all the CUDA stuff and a test says it works. (I followed this: ...
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1answer
137 views

Need antivirus for Ubuntu? antivirus recommendations? [duplicate]

I researched on possible antivirus for Ubuntu. But I have not found any antivirus for my distro Ubuntu 12.04 LTS 32 - bit . Really necessary ? Try installing ClamAV , but always crashes Any ...
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1answer
62 views

Getting 'Permission Denied' when running bundler command

I need to install bundler for an application so here's what I'm doing (instructions from the application documentation directly): mkdir ~/.gems export GEM_HOME=~/.gems gem install bundler -v 1.10.3 ...
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0answers
21 views

Can't upgrade 10.04 server to 12.04 [duplicate]

I've been trying to upgrade for a couple days, but I can't get it to complete. I'm not sure what it's having trouble with because all it gives is == Command terminated with exit status 1 (Sun Dec 13 ...
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21 views

How to keep track of files/applications opened? [duplicate]

I want to make a script which when running can log the details of files or applications being opened manually by the user. Any clue about how to go about it. I tried inotify, couldn't find relevant ...
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1answer
32 views

how to run windows 8 along with ubuntu 12.04?

i have a dell Inspiron 3542 with 1TB space. Ubuntu 12.04 LTS is already installed in it. I want to install windows 8 or if possible windows 10 too. is it possible to dual boot? I'm new to Ubuntu and ...
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0answers
23 views

Only partial updates in 12.04

I tried to install dropbox and it failed. Using the info of Software index broken I uninstalled it. Now Software Update will only offer partial update with software index broken. I already tried ...
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28 views

Terminal painting problem

I have been user of 12.04 since its release. I had similar problems occasionally when I accidentally managed to dump binary data in terminal. These occurrences were very rare. Lately - most probably ...
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0answers
41 views

Ubuntu 12.04 preseed LVM partitioning

I'm attempting to automate the installation of Ubuntu 12.04.5 LTS using a preseed file, but I'm still getting prompted to confirm a Yes/No at a disk partitioning window. The question being asked is ...
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1answer
49 views

How do I shut down remote and local system from terminal? [closed]

How can I shut down and restart local machine from terminal? How can I shut down and restart remote systems from terminal. I have remote IP.
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1answer
35 views

My Huawei mobile broadband not detected

I have a huawei EC178 usb but it is not detected in ubuntu. it works well in windows but could not install it inubuntu.please guide.
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3answers
345 views

Piping Terminal command to Gedit for further editing [duplicate]

I have a complex command in my terminal window which I would like to edit further e. g. echo "This is a complex command I want to edit in an editor" How can I pipe this line of code - not the ...
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27 views

Wifi driver rtl8723 not working in ubuntu 12.04

Wireless driver for rtl8723 is not working in ubuntu 12.04 If ubuntu is upgraded from 12.04 to 14.04, is there a chance of wireless driver being installed..? Thanks...
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1answer
53 views

Unable to run exe files on Wine?

I am running Ubuntu 12.04 and Wine 1.6.1 and I'm trying to get an exe program to run and it isn't working. I'm completely new to Wine, I just installed it for the first time like 2 hours ago, and I've ...
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0answers
26 views

MySQL and PHPMyAdmin in Ubuntu Lamp

I want to work with a local host. I am working with LAMP on an Ubuntu system. Could you explain how to write SQL code in my local host in a convenient way? I don't have PHPMyAdmin, but I am sure I ...
0
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1answer
27 views

i cannot upgrade my ubuntu 12.04 to any latest version

I am not able upgrade my Ubuntu 12.04 to any latest version, whenever i tried at the end moment it shows some error due to low graphics all files are being downloaded during the process but every ...
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0answers
230 views

/etc/init.d/functions: No such file or directory

I am trying to install virtual box version 5.0 on Ubuntu 12.04.5 LTS (GNU/Linux 3.2.0-91-generic x86_64) and I am getting the following errors: /usr/lib/virtualbox/vboxdrv.sh: line 85: ...
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1answer
151 views

libdevmapper unmet dependencies

I am trying to install libvirt 1.2.7 from sources on Ubuntu 12.04 (64bit) LTS. In order to compile libvirt, libdevmapper-dev is required. I a getting following error while installing libdevmapper-dev ...
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15 views

split screen ubuntu 12.04

After dead embedded video card with black screen, I installed Asus Radeon HD 6450 and and replaced Ubuntu 10.04 with 12.04. When installation finished and rebooted, the screen shows split and frozen, ...
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53 views

Wubi Ubuntu 12.04 “Unencrypted private keys are insecure”

I configured my laptop successfully for the wireless settings, but I cannot set the wireless network as my default network, when I try I get "Unencrypted private keys are insecure" dialog box that ...
1
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1answer
28 views

Desktop sharing failing between 12.04 and 14.04

On both machines I have Desktop Sharing and Remote Desktop Viewer (vinagre) up and running. On both machines in Desktop Sharing Preferences I have enabled Allow other users to view your ...
2
votes
1answer
38 views

/root partition full

I have a Desktop PC that I rarely use. Today I booted up this PC to do the updates and to organize some folders but reading my conky I saw that the / (root) partition is almost full. I have 23 GB of ...
0
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1answer
41 views

Ubuntu 12.04 doesn't turns on [closed]

my computer has Ubuntu 12.04, and it was super slow, so I restarted it, and I couldn't turn on anymore. Before, I think that the same thing happened, I asked my computer teacher, he said that it was ...
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1answer
40 views

how to install different library files

i want to install libcoap in my ubuntu os. but every time i write " sudo apt-get install libcoap-dev it gives error that libcoap is not found. E: unable to locate package ...
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0answers
24 views

Cannot install cinnamon on Ubuntu 12.04 [duplicate]

Upon installing cinnamon, I get the following errors sudo apt-get instal cinnamon Reading package lists... Done Building dependency tree Reading state information... Done Some packages could ...
2
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1answer
48 views

Update manager works but shows I'm not updating

I'm using 12.04 (I cannot upgrade due to hardware issues). When an update comes in, it comes up and I update; however, it still says I've not updated in awhile. this is more of a nuasian, then an ...
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32 views

How to disable `Alt+Tab` in unity under 12.04?

I can not find Alt+Tab in Shortcuts of Keyboard of System Settings. Emacs need Alt+Tab. How to disable it in unity ? Thanks
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32 views

“Ghost” Windows Appear Frequently on Screen

As shown in the picture below, I frequently get multiple "ghost" windows that appear throughout my screen (only one shown here). The only way to get rid of them is to reset my computer, but they ...
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1answer
67 views

How can I uninstall moodle on ubuntu?

I tried uninstalling moodle on ubuntu by running the command: sudo apt-get remove moodle but the result I got was: package moodle is not installed, so not removed but I'm still able to access it. ...
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25 views

Is there certified version of Ubuntu for Dell Vostro 3300 i5?

I recently started using Ubuntu 14.04 LTS. I often get "System Problem" messages, as well as other small issues. (System freezes from time to time, especially when using LibreOffice.) I am not ...
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1answer
85 views

No Drivers Found for Brother MFC-J470DW

So, I've followed the instructions on Brother's website, I've got the installer and I've tried running it. I've seen this question: Brother MFC-J470DW Printer Driver Installation , and the answer ...
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46 views

new workspaces took over my teo original workspaces out of the blue Ubuntu 12.04

After several failed boot sequences I managed to login but got four new workspaces. Two are attached to my two original workspaces. Another two workspaces are independent. I can´t work in the original ...
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1answer
44 views

How to change the day of the week Logrotate shifts the file when configured weekly?

I have following configuration which rotates all content of google folder weekly: /var/log/google/*.log { create 0777 www-data www-data weekly missingok rotate 90 ...
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2answers
236 views

r-cran-matrix packages cannot be authenticated

From command line, after entering sudo apt-get upgrade I get WARNING: The following packages cannot be authenticated! r-cran-matrix Install these packages without verification [y/N]? ...
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0answers
46 views

apt-get dist-upgrade problem

When i try to "apt-get dist-upgrade" i always receive the following error: The following packages have unmet dependencies: linux-virtual : Depends: linux-image-virtual (= 3.2.0.87.101) but ...
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0answers
22 views

How to remove Midnight Commander from Nautilus right-click menu

I love midnight commander but I can't conceive of a use case where I'd want to launch it from nautilus. So, how can I remove it as an option when I right-click a folder in nautilus? When I googled ...
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1answer
74 views

New mail notifications (by Evolution) suddenly stopped working

Immediately following one of the latest Ubuntu system updates1, notifications about newly arrived mails stopped working. The corresponding plugin2 is still enabled, and I'm not aware of having changed ...
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0answers
27 views

join two operating system by virtual box [closed]

I have the windows 7 and Ubuntu 12.04 on my PC. So, can I join them using Virtual Box or any other software which help me go from one OS to another without restarting?!! thanks for your answer
1
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1answer
187 views

ngrok installation in ubuntu 12.04

Having trouble to install ngrok in ubuntu, I went to https://ngrok.com/download and download it for ubuntu but it always give binary file which does not allow us to run in ubuntu, Can anyone suggest ...
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1answer
21 views

“Unable to get exclusive lock” Ubuntu 12.04 to 14.04

I'm trying to update my Ubuntu 12.04 to 14.04, but get a pop up saying "Unable to get exclusive lock" "This usually means that another package management application (like apt-get or aptitude) ...
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18 views

Mousepad stopped working 12.04 [duplicate]

please forgive my ignorance, but need some help. My ex installed Ubuntu 12.04lts on my Asus laptop, and everything running well. This morning all good, mousepad working, 2 finger scrolling working, ...
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0answers
56 views

Change notification email subject - Nagios

Anyone can give an idea about, how can I change my Nagios email alert subject? I have google for sometime and every result says to change the command(notify-host-by-email) definition in commands.cfg ...
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0answers
80 views

modprobe error FATAL: Error inserting : Invalid argument

I have ubuntu 12.04 running on my ARM board. I recompiled the kernel recently. Even after recompiling the kernel, I was able to load modules using modprobe device_name. For example, modprobe rtlwifi. ...
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1answer
36 views

How do I upgrade PHP progressively over several sites on a single server?

I have a set of PHP-based websites hosted on a single Ubuntu 12.04 server that I need to upgrade PHP for. However, as some of the sites are QA / staging and others are production, I need to do this ...
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3answers
563 views

apt-get fails to upgrade packages

I'm running Ubuntu 12.04 Server: user@host:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04.5 LTS Release: 12.04 Codename: precise My ...
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2answers
33 views

USB speed converges to 0

I have a laptop and a desktop computer both running Ubuntu 12.04 LTS and I have an issue: When transfer files from/to USB drives, the speed looks good when the copy starts, but immediately afterwards ...
1
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1answer
48 views

How to run crontabs with sudo R CMD BATCH? [closed]

I would like to run a crontab every day at 12h. So I defined a path to my Script with the following syntax: 00 12 * * * sudo R CMD BATCH /home/.../test.R In order to test that I just ran: sudo R CMD ...
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1answer
34 views

how free memory showing as 174G, even i dont have that much RAM [closed]

xxx@xxxl:~$ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 228G 42G 174G 20% / what is difference between Normal G and this 173G ? Is that all free memory ...
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20 views

wifi doesn't accepting the correct password but detecting all the Routers

I have installed the Ubuntu 12.04.3 LTS in my system instead of Windows 7. Now, I'm unable to connect to the any of the wireless router visible through the system. It's just returning the ...
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22 views

Unable to use/login ubuntu OS,Permissions modified

Accidently changed permission of all folder under etc. While working with python project instead of single folder permission , I changed the permission of all under etc including terminal. :( I dont ...