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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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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problem with serial port

am unable to access serial port on my pc loaded with ubuntu 12.04 while using command dmesg | grep ttyS it is showing [ 0.590705] 00:08: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a ...
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1answer
18 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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7 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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8 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: ...
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1answer
28 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
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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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 ...
0
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1answer
22 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
25 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 ...
3
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1answer
73 views

Bluetooth does not detect devices on lenovo with 12.04

I am new to Ubuntu and I am not good at this, but I did a clean install on my Lenovo Z5070 with Ubuntu 12.04 and 3.13 kernel all by myself. My bluetooth can not detect devices, I have tried blueman ...
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0answers
21 views

SOLVED- HP Wireless keyboard and mouse not working with ubuntu 12.04

I own a HP wireless keyboard mouse which use the same USB dongle to connect to the PC. The keyboard works in BIOS and GRUB but when I reach the login screen, they stop working. It worked earlier after ...
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0answers
16 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 ...
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0answers
11 views

Compiling with threads.h fatal error

I am compiling a C program that has #include <threads.h> // pthread.h in POSIX in its header. When compiling it gives the following error: fatal error: threads.h: No such file or directory ...
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0answers
11 views

No sound on a HP Pavilion with elementary os luna [on hold]

http://www.alsa-project.org/db/?f=3bc44dbb84f3d566a971dcdd75730feb64727489 here is the info about almost everything related to sound...i don't wanna switch back to windows just because of this can ...
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0answers
15 views

Intel 4th gen core i7 [on hold]

Per Intel, 4th gen core i7 supports with Ubuntu 11.10. Will it work with Ubuntu 12.04? Please advise. Thanks.
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0answers
15 views

Softwares Installation Problem [duplicate]

I am a window user and i am new to ubuntu. Whenever i download a software like vlc for my ubuntu ,i search for installer like exe files in ubuntu.but unfortunately as i'm new to this os ,so i'm ...
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0answers
12 views

Ubuntu 12.04 : Adding widgets to the login panel

not sure where to start here, it's an area of config I'm not familiar with. Just wondering, is it possible to write some custom widgets for the panel that appears on the login screen? I've found ...
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0answers
22 views

cannot boot into login screen after uninstalling some kernel update packages

In Ubuntu 12.04, I tried to upgrade the kernel as required by a software XXX that I was installing. So as per XXX installation instructions, I installed these packages using apt-get: ...
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7 views

how exactly does a device driver interact with user level application?

I recently wrote a device driver for an eeprom . in the driver code i used the function i2c_smbus_write_byte_data to write to the eeprom and i2c_smbus_read_byte_data to read to the eeprom. from the ...
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0answers
13 views

How to configure DNS with ipv6 in ubuntu 12.04?

Can someone guide me with a working guide and required conf files to configure DNS server for a private network setup?
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14 views

Laptop cursor flicker when docked and connected with 2nd display

new to Ubuntu here. I made my Dell Precision M4700 Dual bootable between windows 7 and Ubuntu 14.04.2 LTS. Ubuntu is installed on a separate hard drive. So far everything works wonderfully, except ...
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1answer
151 views

Microsoft Launches Visual Studio for Linux [duplicate]

Today, I read here that Microsoft Launches Visual Studio now support Linux. ...
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0answers
12 views

undefined reference to `registerrpc' [on hold]

I have this simple server that has to register a procedure to make it available over RPC. here is my server.c: #include <rpc/rpc.h> int * p_double(int n){ static int d; d = 2 * n; ...
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1answer
60 views

Is that possible to reinstall apache 2 without losing websites content?

Is that possible to reinstall Apache 2 on Ubuntu 12.04 without losing Vhosts ? as the websites contents are inside. Regardes
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13 views

How to access Canon CR-50 check scanner connected to Ubuntu 12.04 using CLI?

I am developing a project which needs to access Canon CR-50 check scanner using PHP. How can I make it work? I am currently working on Linux (Ubuntu 12.04) machine, any solution will help me a lot. I ...
8
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10answers
2k views

Maximum time for which a Linux PC can be UP? [closed]

Actually I had a linux system ( running Ubuntu 12.04.3 ) for days without reboot. I ran in to some errors like sleep getting hang and some network mounted file system not getting mount even able to ...
0
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0answers
13 views

rosserial on ARM processor

Hi I have a project where I use rosserial with an arduino, I have code that publishes messages from one arduino, connected to a pc, and another arduino that subscribes, connected to an Odroid XU3. I ...
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31 views

Created a Bootable Cd and It is now Read Only and cant format it

Hello i have created a bootable cd from a DVD + RW Maxell 4.7Gb and it wont let me delete, modify, blank, or burn over it and create a different ubuntu bootable cd and i am trying to do all of this ...
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11 views

ubuntu 12.04, on Dell E6530, specify dock microphone as default

I'm running ubuntu 12.04 on a Dell Latitude E6520. When I use, say, skype with the internal microphone, everybody complains that I'm at the other end of a long tunnel. The dock microphone ...
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2answers
24 views

PHP.ini change not reflected

I am trying to install Zabbix and the following errors appeared during pre-installation I proceeded to change the setting in PHP.ini file to the minimum requirements The problem is that though ...
0
votes
1answer
31 views

When I installed Ubuntu my windows 8.1 does not load? [duplicate]

I installed Ubuntu 14.04 on my laptop with win 8.1,but now when I start the power only Ubuntu is come in DOS and the win 8.1 does not load. how I fix it?
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10 views

ARToolKit-Recognize multiple markers

i'm having a problem with ARToolKit for the recognition of multiple markers. For train pc on my new markers i have to launch :MK_PATT But when i insert the camera parameter filename ,i have this ...
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0answers
11 views

Incorrect screen detection on 12.04?

All of a sudden I get a black stripe on the right edge of the screen, and mouse pointer can't move there. Also, the desktop does down beyond the screen a bit. I'm running 12.04 on Lenovo ThinkPad ...
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0answers
16 views

WiFi and Lan Network is not working - Ubuntu 12.04

I have a problem with my network connection. I have been using the same laptop with Ubuntu for more than a year, and suddenly yesterday all the connections stopped working (both wireless and wired). ...
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0answers
18 views

Workstation Setup on an Active Directory

Excuse my ignorance in matters of System administration. I am a developer trying to integrate development workstations with an Active Directory based network. We have hundreds of Machines running ...
0
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1answer
26 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 ...
2
votes
1answer
16 views

Multiple problems when upgrading from 12.04 to 14.04

I initially experienced problems in attempting to upgrade from 14.04 to 14.10, and gave up attempting this. As a result of these failures, I had to return to factory settings, namely 12.04. Now, ...
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0answers
13 views

Taskbar missing after messing around

I have encountered a MAJOR problem, and that is that my taskbar has entirely vanished. Help? Can't post pictures because I don't have 10 reputation. Great.
1
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2answers
54 views

Command to Combine text 100 lines at a time

I have a file with 7000 lines. I need to combine the lines 100 at a time to reduce it to 70 lines i.e line 1 line 2 line 3 ... line 7000 becomes line 1 line 2 line 3 line 4 ... line 100 line 101 ...
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11 views

Ubuntu 12.04.2 fresh instalation

Im running a 5.3 GiB, AMD x64 A6-3420M APU with Radeon(tm) HD Graphics × 4, Gallium 0.4 on AMD SUMO, HDD 500Gb. The HDD was fully wiped with Install Ubuntu with a USB Ubuntu 14.04.2, and is ...
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0answers
15 views

ubuntu 12.04 falls back to login or no icons in gui [duplicate]

after hours of searching for solutions i am quite confused and frustrated now. None of the solutions here helped. This is what happend and what i did. Suddenly after days of offline the 12.04 ubuntu ...
0
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1answer
17 views

ARToolkit ubuntu 12.04

I am a new Ubuntu user and I'm having several problems trying to install ARToolKit 2.72.1 on Ubuntu 12.04 LTS (64 bit). I have followed several guides on the subject but haven't been able to get it ...
0
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1answer
12 views

ambiguous redirect

The error is: line 20: $1: ambiguous redirect what could be the problem #! /bin/bash while read line do string=$line array=(${string//,/ }) fileName=${array[0]}_"final_fitness.out" ...
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17 views

Disabling USB and DVD ROM in ubuntu

How to disable USB and DVDROM for a normal user in 14.04 but root should be allowed.
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1answer
55 views

How to install latest version of R on Ubuntu 12.04 LTS? [duplicate]

I am not able to download the latest R version on my Dell Vostro 14 3000 Series laptop running on Ubuntu 12.04 LTS. I typed in the standard commands on Terminal: sudo apt-get update sudo apt-get ...
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19 views

Can't install ubuntu 12.04 ltsp [closed]

I have this compaq presario computer with 2 gigs of ram. When I install from the advanced mode alternate installer, here are my choices: LTSP server, Ubuntu Desktop, grub as well as the base system. ...