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 increase maxproc and maxdesc on ubuntu 64 bit machine

I am trying to install HP arcsight on ubuintu 64 bit machine. While installation it throws up an error Pre-Install Check failed: Your maxproc is 7796 and maxDesc is 4096 The lowest limit for ...
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12 views

GStreamer extra plugins [duplicate]

How to install GStreamer extra plugins from terminal on Ubuntu 12.04. link to Gstreamer extra plugin on software center .
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How to turn ON/OFF screen monitor using shell script and 'xrandr' linux command?

I am trying to turn on and off screen monitor in Ubuntu14.04 using key bindings. I tried following shell script #!/bin/sh output=$(xrandr | grep ' connected ' | awk '{print $1}' | head -1) ...
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2answers
34 views

Ubuntu - login with old and new password

Running Ubuntu 12.04, I changed the password of a user using "sudo passwd user" but now that user is able to login using both the old password and the new password. Any idea of why this would happen ? ...
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19 views

Compiz desktop background not shown when Nautilus is running

I'm trying to see the Compiz desktop background, so that every desktop has a different wallpaper , but it only shows up when Nautilus is not running. I tried to set org.gnome.desktop.background ...
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0answers
40 views

semantic_map-knowrob

I'm having some problems with the rospackage knowrob_gui knowrobGUI. I need it to build a semantic map that i have to integrate with my owl file.I started following this guide: But when i run the ...
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0answers
35 views

Problem in the connection between CPU and router

I received a computer with Ubuntu 12.04. This computer was already used by someone else. In the room, there is an internet access point via cable which is connected to a router. I can not access the ...
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1answer
31 views

Rotate nohup output

I'm working with weblogic 10.3.5 under ubuntu 12.04. Weblogic is started using nohup ./startWebLogic.sh ...
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16 views

Wifi disconnected, but still shows up output that it's connected - 12.04

I really don't understand this now. I knowingly got disconnected from the wifi network and then later checked the available wireless extension using iwconfig command. Although I was disconnected it ...
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unable to connect to Wi-Fi using Ubuntu 12.04 - Dell Vostro 3546

I am facing the issue at terminal as well as at the browser. At the desktop a pop-up keeps appearing at times with message : wireless - disconnected. But when I check it from the terminal to see ...
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18 views

Must agree to terms of use everytime skype 4.3 is open [closed]

It's not really an error, everything works fine, however every time I open skype, it makes me re-agree to the terms of use. It's quite annoying. It saves my account data, saved the fact that I said ...
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13 views

Extend monitor on 12.04 doesn't work with laptop, whereas mirroring does?

I'm trying to extend the desktop from my laptop to an external monitor - Ubuntu detects the display, lets me activate it and extend my desktop to it, but then nothing shows up on the external display. ...
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1answer
27 views

`timedatectl` without `systemd`

I want to be able to set timezone for Ubuntu hosts, from command line (given in POSIX format). I was searching for options, and found timedatectl from systemd package but since I did not want the ...
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0answers
30 views

HP 240 G3 Laptop touchpad problem

We are facing problem with hp 240 G3 laptop. Touchpad is not working properly. Needs to touch more surface on touchpad for work. on Ubuntu 12.04 Desktop or 14.04 both laptops.
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1answer
31 views

configure TimeZone

I have two computers with Ubuntu 12.04, both configured with location Santiago. However the time zones are different (blue bar under map) This generate problems when program in c++ and ask for the ...
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2answers
20 views

Unable to install WIne on Ubuntu 12.04

When I try to install Wine, either through the Ubuntu software center or the terminal, I get this: "package dependencies cannot be resolved". How can I install Wine?
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0answers
27 views

HP Compaq laptop video problem; with Ubuntu but not with Linux Mint

I have an old laptop: an HP Compaq nc8430. I've spent several weeks installing different operating systems on it, and have come across an odd problem. I can install and boot Linux Mint on it with no ...
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0answers
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Version of RTAI compatible

I'm new with RTAI and I don´t know what type of version should i use? I'm using ubuntu 12.04 LTS and kernel 3.2.0-23-GENERIC-pae and could someone please, give me the steps to install it in my pc. My ...
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1answer
38 views

Ubuntu 12.04 LTS server in Virtualbox - problems with apt-get update and Prosody

Playing around with learning how to run an Ubuntu server (specifically, trying to set up Prosody as per a video on ArsTechnica, and a Linode guide), using Virtualbox. I've got it up and running, ...
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error: ELF header smaller than expected

So I had updated ubuntu 12.04 to 14.04 and while computer was rebooting I turned it down and automaticly this showed: error : ELF header smaller than expected . Grub rescue>
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1answer
41 views

Using GPARTED in ubuntu 12.04, to create another partition [closed]

I have bought a new laptop, which has Ubuntu 12.04 in it.. Now I want to put Windows 8.1 in it, without formatting(without removing Ubuntu). I googled for the same, and found using GPARTED utility ...
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1answer
20 views

Unable to log in Ubuntu 12.04 LTS

I am unable to log into my Ubuntu 12.04 machine, username and password prompts reapper again. I can only log in as a guest.
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1answer
36 views

Not able to upgrade to 14.04 version from Ubuntu 12.04.5 LTS

I am completely new to this ubuntu world , I went to upgrade manager and see that I have 12.10 version and not 14.04 version don’t why but when i click upgrade for 12.10 also I am not able to do ...
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19 views

Partial Upgrade from 12.04 version problem

The Ubuntu 12.04 suggested to partial upgrade, after it is done, it asked to restart to finish the upgrade, after restarting I found the following problems: - Network Disabled - Mouse not responding - ...
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1answer
28 views

I have a 64 bit Ubuntu12.04 PC. I want to install VLC player without useing Internet? [duplicate]

I have a 64 bit Ubuntu12.04 PC. I want to install VLC player without using Internet?Please suggest as I dont have Internet available on ubuntu PC
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2answers
26 views

Sound not working on dell insipron 14 3442 having Ubuntu 12.04.5 . Using HDA Intel PCH card

Headphone is working fine but laptop sound is not working. Using card 1: PCH [HDA Intel PCH], device 0: HDA Generic [HDA Generic] on ubuntu 12.04. More Infos:- Card: HDA Intel PCH Chip Realtek ...
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7 views

Install Ubuntu 12.04 to microSDHC (class 4) card on DARwIn-OP

I'm working on a DARwIn-OP which has a "Built-in PC: 1.6 GHz Intel Atom Z530 (32 bit) on-board 4 GB flash SSD". The pc has a ubuntu 9 on it and we want it as a fallback, so the plan is to install ...
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50 views

How to install python3-pyqt5 on Ubuntu 12.04?

I was trying to install M64py (N64 emulator) in 12.04 and it showed me this. This installed well without much trouble in 14.04, but not working in 12.04. When i tried using sudo apt-get install ...
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8 views

CSALLO: heap below bss?! (in running Geant3) on Ubuntu 12.04

I installed Geant3 on my Ubuntu (12.04). I typed: make and it created gbat.exe and some output (.o) files ...and then I typed: make i and it created gint.exe and then I wrote: ./gint.exe ...
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15 views

Ubuntu 12.04 LTS constant internal server errors

my problem seems to be too overarching for me to be able to be very specific, but basically, today after installing some updates through the update manager, Ubuntu suddenly became very slow and ...
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1answer
34 views

Ubuntu 12.04.3 - Expanding/Resizing LVM partition upon additional Disk in a Hardware RAID 5

We have a database server configured as hardware RAID 5 with 3pcs 1TB Disk. Usable is 2TB and partition as follows: /data is LVM Filesystem Size Used Avail Use% Mounted on /dev/sda1 ...
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0answers
8 views

How to keep the window manage in the central screen

so this is a question of multiple displays. I am using three displays along my laptop in Ubuntu 12.04. When I press alt-tab the window manage appears on the screen that I am working, that is, if I am ...
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24 views

nc command: conflict between different Ubuntu machines

I am using Ubuntu 14.04. Then I have an Ubuntu 12.04 machine running on virtualbox. On the virtual box machine I listened on port 12345 using the command nc -l 12345 And on the host machine, I ...
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26 views

ubuntu 12.04 LTS not detecting my 2nd display

Hi I just assembled my pc and got 2 graphic cards into it, I installed ubuntu 15.04 and both screens work , however the pc randomly freezes for a few seconds, so I installed 12.04 and doesnt freeze ...
2
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1answer
34 views

How to get rid of templates folder

I have a simple problem: Whenever I delete the templates folder in my home directory (/home/[username]/ in case that info is of use) it seems to come back. It contains nothing and I have no use for ...
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34 views

How can I resize a virtualbox guest os (ubuntu)?

I run windows 8 and virtualbox with ubuntu 12 as guest os. Now it is 96 % full and I want to increase the size of the disk space available to ubuntu. There is no obvious way to do this in virtualbox. ...
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Ubuntu not getting logged in after upgrading to 14.04 from 12.04

I installed Ubuntu 12.04 using Wubi installer from windows, even before that i have Ubuntu 10.10 installed in my system(not through Wubi installer - corrupted not able to login). After updating ...
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1answer
33 views

Is Intel accessing my machine without permission through mei_mei module?

According to this post, there's a module called mei_me which allows Intel to update my machine remotely. Does this mean that, whenever I'm online, they have the ability to access my machine without my ...
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1answer
51 views

Problem with serial port

I am unable to access the serial port on my PC with Ubuntu 12.04. The command: dmesg | grep ttyS Outputs: [ 0.590705] 00:08: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A I ...
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1answer
24 views

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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17 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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20 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
15 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
61 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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22 views

32 bit 14.04 and 12.04 [duplicate]

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: ...
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1answer
43 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!
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1answer
26 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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20 views

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

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 ...
0
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1answer
54 views

Why I get “Cowardly refusing to create an empty archive” with TAR command?

I'm trying to follow this tutorial to full backup my linux / Ubuntu 12.04 after a fresh restore. my code in fullserver.sh : tar -cvpf /backups/fullbackup.tar --directory=/ --exclude=proc ...
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1answer
31 views

Upgrade to Ubuntu 14.04 in ASUS X200CA [duplicate]

I have an noteboook ASUS X200CA with Ubuntu 12.04 factory preinstalled. I would like to update the operating system but I'm afraid it is not working properly, consume more resources than my computer ...