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 install software raid 0 on ubuntu 12.04 server with mdadm?

I need to install a software raid-0 array on a Ubuntu 12.04 server with mdadm through commandline (SSH). The drive setup is as follows: SDA = OS SSD SDB = HDD for raid 0 SDC = HDD for raid ...
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Access denied error while mounting a shared folder?

I am a linux newbie and I have a very basic question. I have three machines - machineA 10.108.24.132 machineB 10.108.24.133 machineC 10.108.24.134 and all those machines have Ubuntu 12.04 ...
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5answers
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How to start Virtual box machines automatically when booting?

I have many Virtual box machines in my Ubuntu12.04, each time i shutdown or reboot i have to start them one by one. I wanna a help in writing script for automatically autostart the VBox machines ...
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VirtualBox Guest Additions won't install

I'm trying to configure my virtual machine so I can share a folder between my host and guest OS, but when I try to install the Guest Additions I get the following message: I've already done ...
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1answer
2k views

How can I change the screen resolution on Ubuntu 12.04?

I have ubuntu 12.04 installed alonside windows in dual-boot. After installing the latest nvidia drives (304.64 I believe) the resolution dropped to 600x480 and it's the only option available in the ...
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34 views

Install uTorrent

I followed these 2 tuts: Step by step installation Stuff if you are with x64 OS Well, I am done until the pre-last step. I have created the symlink, and when I navigate to the folder ...
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2answers
5k views

How to install winexe on Ubuntu?

I don't seem to find a working tutorial on how to install winexe, which is a program that allows for execution of commands on a Windows machine remotely from a Linux machine. None of the tutorials ...
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1answer
676 views

How to downgrade apache 2.4 to 2.2

Is there any way to downgrade the apache version that installed in ubuntu 14.04. Some packages are not working in 2.4 apache. So we decide to downgrade to the stable apache version
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2answers
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Nvidia Powermizer Performance Levels

Is there anyway to configure Nvidia Powerimizer performance levels? My current setup has 3 power levels with the lowest one being 50mhz. The problem with this it that it lags compiz when it goes to ...
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2answers
1k views

Javascript enabled but not enabled in Firefox browser

I had installed Java ii icedtea-6-jre-cacao 6b24-1.11.5-0ubuntu1~12.04.1 Alternative JVM for OpenJDK, using Cacao ii icedtea-6-jre-jamvm ...
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Microphone don't work on Skype 4.3 with ubuntu 12.04

I have tried to change all settings on the Volume Control Panel, but nothing happens. I just hear the sound from the PC, but not by microphone.
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1answer
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Fn keys for Brightness not working on Toshiba Satellite L755

I am running Ubuntu 12.04 and I love it! The only problem is the keys for my brightness, F6 and F7, does not work when I am on battery power or AC power. It randomly works after I am idle for a while ...
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How to reinitialize processor for /sys and disable integrated graphics

I have upgraded my laptop from Intel Pentium P6100 to Core i5-460M. i5 supports Turbo Boost. To switch this I need to do: echo 0 or 1 > /sys/devices/system/cpu/cpufreq/boost But my System ...
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2answers
20 views

Crontab command does not function properly

I have the following crontab entry to automate copying of my files to separate W/S in the network. However, it does not copy the files but produce the log file. here is the file contents #! ...
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2answers
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Why do I get disk I/O errors booting the 3.2 kernel on a xen vps server?

I have a xen vps, which I just upgraded to the new LTS 12 Precise Pangolin. However, I see this error on booting: [ 12.848076] end_request: I/O error, dev xvda, sector 12841 [ 12.848093] ...
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38 views

Ubuntu issues when upgrading from 12.04 to 14.04

I've upgraded from ubuntu 12.04 to 14.04. There were display driver issues and I could only work in a terminal. I have installed the nvidia drivers from here. During the installation there seemed to ...
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0answers
13 views

usb modem installation

I am new to Linux. I'm using UBUNTU 12.04 LTS. I have iBall 3.5G Connect USB Modem. I can use the Dongle on Windows, but I failed to use the dongle on UBUNTU. Help me to solve this problem.
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1answer
28 views

Ubuntu server spontaneous reboot

I have got two ubuntu 12.04 servers(xeon e3). Sometimes(several days) each server spontaneously reboots. HDDs and other hardware are ok. Which logfile can help find a reason of the problem? UPDATED. ...
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1answer
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What is the best freeware app for Windows to mount EXT4 partitions (from a GPT 4TB Disk) as RW, safely without corrupting the EXT4 partition? [duplicate]

My Computer is set up as Dualboot Windows and Ubuntu. I have 1 OS drive, and 1 hard drive with a /backup partition (which has all my family photos and data) and it is ext4. Also note... it is EXT4, ...
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1answer
37 views

Upgrade from 12.04 to 14.04; No desktop, no panels appearing

I am able to log in to Gnome(Classic) and I can use a terminal command there. However, whenever I try to log in to Ubuntu, my terminal command doesn't work. My guest session does not work either. I ...
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2answers
518 views

How to reinstall PulseAudio (Ubuntu 12.04)

I was trying to fix my audio problems using suggestions from this forum. One of the comments suggested I execute this and only this: killall pulseaudio So I did, and I restarted my computer just ...
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5answers
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12.04 Virtualbox not seeing any usb devices in the usb filters settings

I was following this question but found a problem. Use my webcam with Ubuntu running in VirtualBox I used guvcview to test the camera, it works. I installed the 12.04 virtualbox release from their ...
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1answer
31 views

unable to launch startxfce4 x session — “startxfce4” not found

recently i have tried to upgraded ubuntu 12.04 to 14.04 and it got crashed. somehow i upgraded it to 14.04 and now i can able to see login screen. my problem is when i tried to login i am getting ...
2
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1answer
273 views

Cannot connect to internet using D-link mobile broadband modem for BSNL network

I am using dlink modem of model DWM-156 as an HSUPA USB adapter with a BSNL network sim in it. I am using Ubuntu 12.04 alongside with windows7. I have defined the network settings in the mobile ...
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2answers
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Having trouble installing Bradcom STA driver

I just installed Ubuntu and love it so much, its so fast now. But I have a problem connecting to the internet. I checked and saw I have to install the driver Broadcom STA wireless driver but every ...
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27 views

System went to sleep while running do-release-upgrade

I am trying to upgrade from Ubuntu 12.04 to 14.04 on a laptop. I have run sudo do-release-upgrade During the upgrade process the laptop went into sleep/locked screen mode. I have rebooted and ...
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4answers
3k views

Unable to enable wireless on a Vostro 2520

I have a Vostro 2520 and not sure how to enable wireless on my machine. The details are given below, would appreciate any pointers to resolving this issue. lsmod returns Module Size ...
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1answer
10 views

How do I install pygame in a pyenv virtualenv for Python 2.7 on Ubuntu 12.04?

I found instructions for Python 3.3 but nothing specifically for 2.7. I sorted it out and figured I'd record it here for future reference.
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Belkin N300 Router SSID not recognised/listed

I am using Belkin wireless N300 Router, Model noF9K100v1 router. I have dual boot Windows 7 and Ubuntu 12.04. PPTP is configured internally in the router. On Windows and Android, I can connect and ...
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0answers
15 views

can't install Quake 3

After installing it from Ubuntu Software Center and having the original disk etc I get the following error message and I have no idea whatsoever of what I am supposed to do: Use game-data-packager to ...
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15 views

Unable to delete or copy files from/on an MP4 player

I was wondering about how t fix the following problem: I have an MP4 player and connect it to my laptop where I have Ubuntu 12.04. I connect it using an USB cable if that makes any difference. It ...
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Edubuntu 12.04 freezes at login window

I upgraded my edubuntu distribution to 12.04 and when I got to the last step, which was to remove no longer needed packages, I skipped it and continued. My computer restarted as it should but once it ...
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I can not print on Windows 7 shared printer

For a while I can not print from my Ubuntu 12.04 64 bit pc on a Windows 7 shared printer. Before that everything was ok. The printer is HP LaserJet 1100. The error message is: "File ...
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1answer
961 views

How can I fix “dpkg: error: parsing file”?

... and what is sudo and where/how would I type the scripts I've seen in some related answers? Yes I am very new to Linux, and am using Ubuntu 12.04 LTS. All updates are failing with ...
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I can not install ipython3-notebook in 12.04.5 amd64

When installing it , ubuntu gives the below message : ipython3-notebook: Depends: ipython3 (=0.13.2-1~ubuntu12.04.2) but 0.12.1+dfsg-0ubuntu1.1 is to be installed How to do with it ? Thanks
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33 views

Can't upgrade my Ubuntu 12.04 to 14.04

I have Ubuntu 12.04 LTS on PC. When I'm trying to upgrade it using Software Upgrader I click "upgrade" and its "Unable to load page Problem occurred while loading the URL ...
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1answer
35 views

Failed to fetch repositories; a particular case

This is the question with many answers but I am not sure how to apply them. I please for the particular solution: what to add or remove by changing to comment in the following files and what to check ...
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9 views

Xchat unable to connect

I am using Xubuntu 12.04.4 LTS. I have been trying to connect to freenode IRC server through Xchat application but I am getting the following error all the time Looking up irc.freenode.net * ...
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2answers
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How to setup Lenovo IdeaPad Z500 Notebook Nvidia Optimus drivers?

I have installed the Ubuntu 12.04 on Lenovo IdeaPad Z500 Notebook. Currently I don't know how to ascertain which card is being used and how to setup the appropriated drivers to use the Nvidia Optimus. ...
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bumblebee error under 12.04.5 amd64 with kernel 3.13.0-34-generic

My notebook has i5-2450M CPU and Nvidia GT550M video driver. I installed ubuntu 12.04.5 amd64 with kernel 3.13.0-34-generic . After booted, I run the following three commands consecutively . $ ...
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2answers
81 views

Installation problems of Ubuntu via virtualBox in my windows 7 64 bit

I am really unhappy while installing Ubuntu 14.4.01 via virtualBox in my windows 7 Professional 64 bit operating system. ***I am using VirtualBox-4.3.14-95030-Win I am finding these problems while ...
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2answers
30 views

Ubuntu 12.04 wireless (wifi) not working, can not upgrade to 12.10, touchpad gestures not working. What to do?

I installed ubuntu 12.04 LTS 3 days ago and since then wireless feature and touchpad gestures are not working. Tried everything on internet but still unsuccessful. I cant upgrade to ubuntu 12.10. ...
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9 views

Ubuntu 12.04 Very slow especially with Android Studio

I have an old laptop with the following specification: Memory: 485 MiB, Processor: Genuine intel CPU T2300 @ 1.66 GHz ×2, OS Type: 32 bit, Disk: 78.1 GB, I installed on it Ubuntu 12.04 LTS and I ...
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3answers
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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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How to disable Preventing RIAs from Being Repurposed

I have problem running my java applet without java warning. How can i disable the below warning?. I run this page from cron so that it will automatically launch the java applet, but due to this ...
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355 views

LightDM not loading in 12.04 in VirtualBox

The boot process just stops here (below). I've tried stopping/starting lightdm but it doesn't even stop nor can I pkill it. I've already ensured that my bios has visualization enabled and have most ...
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flashplugin installer works for firefox but not chromium-browser [duplicate]

I'm on Ubuntu precise (12.04.5 LTS) and I do have flashplugin-installer installed. When I click on flash videos in chromium-browser I get "An error occurred, please try again later". In firefox they ...
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2answers
13k views

Unity launcher doesn't appear in VNC session

I'd like to have a unity desktop accessible via VNC on a precise server machine I have running. I installed the ubuntu-desktop package. I'm launching a VNC session with the following in my ...
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1answer
80 views

Problems with 12.04 LTS to 14.04 LTS upgrade

I decided to upgrade from 12.04 LTS to 14.04 LTS. I used do-release-upgrade. Everything worked. When I run lsb_release -a I get : Description : Ubuntu 14.04.1 LTS Release : 14.04 Codename : ...
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1answer
118 views

Should I upgrade to “Ubuntu 14.04 'Trusty Tahr'” from “Ubuntu 12.04 LTS” and what care do I need to take if I upgrade? [duplicate]

I'm basically a Web Developer(PHP Developer) by profession. I mainly work on PHP, jQuery, AJAX, Smarty, HTML and CSS, Bootstrap front-end web development framework. I've also installed and using ...