Fourth LTS (Long Term Support) release of Ubuntu, code-named Precise Pangolin. Released on 26th April, 2012. Will go End Of Life (EOL) April 2017. Only use this tag if your question is version-specific.

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Ubuntu 12.04 File Open/Save dialog boxes display drop-down list showing folder and program names sharing the same first character/ symbol

Recently, I found that the File Open/Save dialog boxes in my installed programs now display a drop-down list showing a list of files and sub-folders in that particular folder. I did not encounter this ...
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1answer
19 views

Ubuntu 12.04.5 LTS Install: stuck on step “ubuntu ubiquity: Processing triggers for libgk-pixbuf2.0-0 …”

I'm installing Ubuntu 12.04.5 LTS for the first time and the Install is stuck on the progress command: ubuntu ubiquity: Processing triggers for libgdk-pixbuf2.0-0 ... This has been stuck for several ...
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1answer
4k views

With Kernel 3.5.0-21 the wireless card Realtek RTL8723AE-BT stop working

Yesterday, I updated my Ubuntu 12.04 to the Kernel 3.5.0-21 and the wireless card stop working... In other threads I saw the same problem with another kernels. Anyone have the new driver? I sent a ...
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10answers
44k views

Why is the /etc/hosts file not working?

I have been having problems with this for a while and have tried everything I know, so I figured it was finally time to ask for some help. Any edit I make to /etc/hosts just doesn't work. Example: ...
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29 views

Cannot login as administrator after reinstalling Ubuntu 12.04 LTS

After reinstall Ubuntu 12.04 LTS on a laptop, a new problem arose: can no login as administrator. When trying to log in, Ubuntu just do not let enter, no errors, but can enter only as a guest. ...
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1answer
40 views

How to install new versions of G++ that use the corresponding C++ standard library?

I am trying to install multiple versions of the g++ compiler for testing purposes. I would like to be able to install g++ 4.9.3,5.1.0, 5.2.0, and 6.1.0. I know that I can do sudo add-apt-...
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0answers
15 views

Cannot create a backup with Dell Recovery utility

I tried to create a backup using Dell Recovery utility after reinstalling Ubuntu. During that process I choose "No media, create image" options as I wanted to save .iso file on the hard drive. At the ...
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2answers
4k views

Ubuntu 12.04, xbmc, opengl, intel motherboard

I've got an HTPC that I built myself, with a Asus P5G41T-M Motherboard. It's got an on-board HDMI port, and I've been using that with no problems. I started out with Mythbuntu ( an older version ), ...
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1answer
2k views

How to get Spyder IDE to use Python 3 in Ubuntu 12.04 LTS?

sudo apt-get install spyder3 says: E: Unable to locate package spyder3 How can I install Spyder 3 on Ubuntu 12.04 LTS? I need some Python 3 features.
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1answer
316 views

HP Pavilion zv6000 Ubuntu kernel crash

Ubuntu dumps the call stack/crashes. Steps I've taken. I tried installing from a disc image, the install never made it past the option to "install along side Windows XP" - it dumped the callstack ...
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2answers
33k views

How do I enable multiple cores in my virtual enviroment?

I've installed Ubuntu in a virtual environment using Oracle VM VirtualBox Manager and it works great. However I'd like to enable multiple cores - as seen in the image below my Windows machine has 2 ...
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1answer
8k views

Restore Xorg core and config files ubuntu 14.04

This question is a follow up on this one. I have recently upgraded from Ubuntu 12.04 to 14.04 and xserver broke during the process. I have tried reinstalling from the command line running the ...
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2answers
6k views

Diskless with Ubuntu 12.04

I'm trying to setup a new diskless solution with ubuntu 12.04 without any success. I followed this Diskless Ubuntu HowTo But the initramfs seems not to be able to mount my nfs share. On my server ...
0
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1answer
9 views

How to access recovery console without using grub?

So I just got a computer from work for free but it's a rather old iMac, probably from 2006, and it has Ubuntu on it. I have no clue how to use this software and the previous owner is unknown so I can'...
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2answers
1k views

Ubuntu 12.04 problem installing thinkorswim

I have follow the instructions listed in the forum as well as the thinkorswim website. I can get all the way to the launch point for showing the desktop and it won't show I just get a black screen and ...
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2answers
10k views

Wifi not working on Acer Aspire One D270 (Broadcom BCM4313 wifi adapter)

brand new baby linux user here, never used Ubuntu or any other linux OS before, so be gentle and use short words! I installed Ubuntu 12.04 on my new Acer Aspire One D270-F61C/KF netbook (it's a ...
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2answers
13k views

How can I reinstall pulseaudio? (12.04 64bit)

I accidentally removed pulseaudio from my Ubuntu 12.04 64bit. I have tried reinstalling it using sudo apt-get install pulseaudio but my sound card doesn't appear in the list of the devices (in ...
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34 views

Audio missing on new Ubuntu 12.04 LTS laptop

New notebook come with Ubuntu 12.04 LTS preinstalled, and audio is missing, no sound. MUTE is off. How many efforts is required to enable such basic functionality on new laptop? I'm have no much ...
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3answers
140k views

Command to get the hostname of remote server using IP address

I want to get the hostname of a remote server using the IP address using my Ubuntu. In Windows we can get using NBTSTAT but this doesn't work in Linux. Does anyone know how to do that?
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36 views

Any chromium-based browsers aren't working on 12.04!

Few days ago I got system, kernel and software updates for Ubuntu 12.04. After restarting any chromium-based browsers (Google Chrome, Opera, Chromium, Vivaldi etc..) are not working. I have similar ...
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6answers
56k views

How can I create launcher icon for PhpStorm?

I have PhpStorm on my PC, to launch it I have to go to phpstorm/bin/ and launch phpstorm.sh, how can I pin this to launcher so that I dont have to go into folders every time?
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9 views

wvdial invalid dial command

I am using a USB modem on my system running on ubuntu. When at home, I am able to comfortably connect to the internet using wvdial. But, at a certain remote location where the mobile signals are very ...
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2answers
6k views

No boot option after installing Ubuntu 12.04 LTS on Acer Aspire 4736z with Live CD

I am facing a problem. After installing Ubuntu 12.04 LTS using Live CD, at the reboot there is no boot option to choose the OS. I directly get logged into my Windows 7. Before that i was having an ...
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15 views

Could not connect to vsftpd server [on hold]

When I try to connect vsftpd server it shows the following error Status: Resolving address of sitename.com Status: Connecting to xxx.xxx.x.xxx:21... Status: Connection established, waiting for ...
13
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3answers
20k views

How to run crontab as user:www-data?

My LAMP is setup to work as user:www-data and all files and folders are created with that permissions. I have setup for crontab as user@ubuntu. So i do crontab -e and use this command: */5 * * * ...
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4answers
5k views

ZTE MF180 - BSNL - 3G Datacard USB Modem not working in Ubuntu 12.04 LTS

I'm entirely new to Ubuntu and hence do not have much knowledge about it... I recently installed Ubuntu 12.04 LTS version alongside with Windows 7 since i wanted dual booting option. Here's my ...
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1answer
21 views

How to move files in perl recursively

How can i move all files in a directory to the previous directory in Perl using system command ? I tried the following method and it showed error system('/bin/mv "test/*" , "./"'); bash: syntax ...
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1answer
17 views

How to set noapic and pnpbios=off parameters for boot

I have a weird laptop, that, long story short, must have these 2 parameters set for it to boot: pnpbios=off noapic How to I tell grub to utilize these every time it boots?
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1answer
4k views

How do I get Ubuntu 12.04 to recognize encrypted swap partition so that I can hibernate?

I just installed Ubuntu 12.04 and used gparted to erase and enlarge my swap partition. When I rebooted, gparted said that the file partition for the swap was unknown. Gparted doesn't let me change ...
2
votes
1answer
835 views

How to use rsyslog?

I've been scouring forums for a few hours and cannot find a concrete explanation on how to use rsyslog. I really just need the basics. I have a log file logFile.log and I want to forward the logs to ...
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1answer
6k views

How can I get my wifi to work on my Dell 3521 laptop?

I have installed ubuntu 12.04 alongside windows 8 in my DELL 3521 laptop and everything is working fine except the wi-fi in ubuntu. In win 8 wifi is working well but when i start ubuntu it does not ...
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3answers
14k views

nginx dependency problem trying to upgrade

Trying to upgrade my Ubuntu 12.04 vps I get the following error: henrik@neung:~$ sudo apt-get upgrade [sudo] password for henrik: Reading package lists... Done Building dependency tree ...
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5answers
10k views

Can I apply a different GTK3 theme from the main one to an individual application?

For example, can I keep Ambiance as main theme but assign elementary theme to elementary's app?
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1answer
118 views

Laptop powers down for no apparent reason

Over the past day, my laptop which is running Ubuntu 12.04 has been abruptly powering down for no apparent reason. It has a full battery charge, so there are no issues there. I can't think of any ...
2
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1answer
1k views

Ubuntu 12.04 totally freezes while browsing or using VirtualBox

My system:  Ubuntu 12.04 64-bit  8GB memory  Intel Core i3 540  AMD ATI RV710 [Radeon HD 4350] - graphic driver I have tried to figure out what is causing the freeze, but I ...
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0answers
20 views

Upgrade to 15.04 didn't finish correctly: how to resolve failed issues? [on hold]

I upgraded Ubuntu from 12.04 to 15.04, and during the upgrade - I noticed that the setting of changing keyboard's language direction (from L2R to R2L) failed, along with the upgrades/installation of ...
2
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1answer
249 views

“sudo apt-get upgrade” not working

I am using Ubuntu 12.04 installed on a Dell Vostro 15 3000 series laptop. when I hit sudo apt-get update it works fine and then I hit sudo apt-get upgrade it shows me: and then when i press Y ...
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1answer
142 views

Security risk for making the sudo password timeout infinite?

I recently changed my sudo password timeout (the amount of time that passes before sudo asks you for your password again). It defaults to 15 minutes; I raised that to an hour with sudo visudo and ...
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0answers
22 views

Not able to install 12.04 or 14.04 on my laptop [on hold]

Not able to install 12.04 or 14.04 on my laptop. But successfully installed 16.04. I was doing the installation with bootable pendrive. My laptop configuration is as Lenovo G50-80 RAM 8 gb Processor ...
5
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3answers
22k views

Ubuntu doesn't see my phone (Sony Xperia Tipo)

When I connect my phone Xperia Tipo to my Ubuntu 12.04, the USB icon does not appear in a launcher. lsusb gives me following results: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ...
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4answers
13k views

Why doesn't the bootable USB show up in the BIOS?

I followed all the instructions on the Ubuntu website as to how to install Ubuntu using a bootable USB. I got the linux pendrive thing, formatted the USB, and have nothing on it besides what was put ...
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0answers
12 views

Where can find zone files in slave bind server?

In /etc/bind/named.conf.local file I mentioned file "/etc/bind/slaves/file name.db"; but I couldn't find the zone file in the location /etc/bind/slaves.
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10 views

how to connect lan network in ubuntu 12.04 vmware

How to connect network(wired) in ubuntu12.04. unable to connect. help me with the steps to connect network in ubuntu.
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0answers
12 views

SD card and USB error reg in ubuntu12.04

I have downloaded some BSP package regarding my embedded computer and The linux os booting on the hyper terminal and now I am trying to boot up onboard/SD card boot up for that I am trying to write ...
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3answers
14k views

Told command dpkg cannot be found

On issuing the command sudo dpkg -i (package name) at chronos@localhost ~ $, I get the response sudo: dpkg: command not found. Anyone know why? I'm trying to load version 3 of network-manager and ...
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3answers
12k views

Ubuntu 12.04 does not recognise CD

~$ wodim --devices wodim: Overview of accessible drives (1 found) : ------------------------------------------------------------------------- 0 dev='/dev/sg1' rwrw-- : 'MATSHITA' 'DVD-RAM UJ8B1AS' -...
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1answer
3k views

Ubuntu apt-get upgrade error on ubuntu 12.04

I am trying to use command sudo apt-get upgrade command on mu ubuntu 12.04. But is is showing me the error .This is after i upgraded my php 5.4 to php5.5. You might want to run 'apt-get -f ...
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26 views

Check file system integrity for all existing partitions

How to check file system integrity for every dev/sdaX block with fsck command? Ubunty LTS 12.04 crashed, then was installed again, from boot into recovery mode. Device Boot Start End ...
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4answers
9k views

How do I set resolution to 1440x900 with Nvidia?

I have an Nvidia GeForce 9800 GT card and suddenly after some recent updates on 12.04, I am unable to get my resolution higher than 1024x768. It used to be 1440x900. I have tried uninstalling and ...
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2answers
394 views

getting different version of java in ubuntu

I am getting different version of java when i run java -version and javac -version. for java-version iam getting java -version java version "1.7.0_65" OpenJDK Runtime Environment (IcedTea 2.5.3) (...