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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What is the risk on not updating Ubuntu after installing it from a CD? [duplicate]

I have an Ubuntu 12.4 CD. If I install it to my computer, is it mandatory to install the updates it shows when I boot from it? What are the risk involved in not installing the updates? I will be using ...
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184 views

How to recover Ubuntu 12.04

Ubuntu is my main OS and I have Windows as a VM. I made a mistake and rebooted while it was upgrading to 12.10 and now my machine cannot boot to OS. How can I recover my files before I do a clean ...
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1answer
3k views

Asking for cache data failed | Assuming drive cache : write through. Ubuntu 12.04 LTS GUI doesnot appear

I recently installed Ubuntu 12.04 on my hard drive partition of 10 gb. I was uninstalling some software and after that this messages started coming up on a black full screen. Asking for cache data ...
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1answer
780 views

Lightdm-gtk-greeter's background wallpaper is distorted in Ubuntu 12.04 (How I can correct background wallpaper errors in “lightdm-gtk-greeter”?

Changed my settings into "lightdm-gtk-greeter" to be able to select different languages at login each time I wish. Everything is fine with my PC. It logins correctly after a while with an exception ...
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1answer
1k views

12.04 not mounting Kindle 3

I've tried plugging in my Kindle (3rd generation-keyboard), but nothing happens when I do. It's not seeing the device anywhere. I've tried re-booting the kindle while plugged in, I've installed ...
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0answers
978 views

Cairo-dock and LXDE: Cairo-dock is always behind all of the Windows.

I have ubuntu installed, and I'm running it in the LXDE environment. When I have Cairo-dock running, I have it set to 'Always on top', however, it sits behind all of the windows. I want the dock to ...
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0answers
21 views

Ubuntu splash Screen is now a gear and boot speed is slow [duplicate]

I installed lxde, gnome, and a whole bunch of other desktop environments the other day, and now while Ubuntu boots, the splash screen is now a gear on a gray background, and boot speeds have gone from ...
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4answers
37k views

Making a Bootable USB flash drive which will boot in EFI

I have recently bought a laptop with windows 8 (EFI) installed. I thought I'd be able to handle installing 12.04.2 relatively easily - how wrong could I be? Using a live-usb I made using startup ...
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1answer
671 views

Chrome book optical disk drive

I don't know if this is the right place to ask (if it is not then if someone would guide me to the correct place) but I want to buy a chrome book and I found out that there is no way to get an ...
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2answers
2k views

CUDA nvprof profiler in 12.04

I have the latest CUDA toolkit and drivers installed on a 12.04 server. The drivers are working fine: all the NVIDIA sample code compiles and runs and I've written, compiled, and run several CUDA ...
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2answers
218 views

Where is Unity Launcher

I have just installed Ubuntu 12.04 using Wubi. It gets installed successfully but now I am only able to see an empty desktop. I could not find any softwares anywhere in home etc, no where. Where are ...
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1answer
21k views

DHCP server not starting

I'm trying to set a DHCP server on 12.04. I installed: sudo apt-get install isc-dhcp-server My configuration files look like this: /etc/default/isc-dhcp-server INTERFACES="eth0" ...
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1answer
1k views

Asus eeePC - Screen Brightness Issue

I have ASUS 1015CX Netbook on which I have installed Ubuntu 12.04LTS. All seem to work fine however there is an issue with brightness settings; changing the brightness (both through settings and with ...
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1answer
3k views

Nvidia optimus hdmi out tutorial not working correctly

After recently installing ubuntu 12.04 Desktop Edition lts on my nvida optimus equipped laptop (ASUS N53J) I tried to get hdmi out to work by using the method described in this guide here. I am able ...
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1answer
99 views

Maximum sound level differs between Ubuntu and Windows

Recently I've been watching lots of .mkv or .avi files in my Ubuntu and I realize that the maximum sound level is lower than what is in the Windows with KM Player. This difference is very noticeable ...
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1answer
114 views

Generating menu in ubuntu

I want to change GUI menu of ubuntu. That is, I want to add a icon at the menu (top of screen), after clicking that a menu will be shown and selecting particular option will run a particular ...
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2answers
2k views

32-bit or 64-bit [duplicate]

I'm installing 12.04 on to my desktop. I just have a question on which version is better for my hardware. My specs are: Processor: Intel Core i5 2400 @ 3.10GHz Sandy Bridge 32nm Technology ...
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1answer
303 views

How to get rid of whitespace around image file?

I could not delete the extra white space around a .eps file in Ubuntu 12.04. I have done the same, using the command fixbb <inputfile.eps> <outputfile.eps> in earlier versions but in this ...
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1answer
207 views

Update postgresql with latest security update

PostgreSQL announced on the 4th of April a security update to its PostgreSQL server. I really want to install that update. But if I run sudo apt-get update and sudo apt-get upgrade the update does ...
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1answer
2k views

Problem installing fglrx drivers 13.1 with kernel 3.4 on ubuntu 12.04.02 x64

I have tried to upgrade from kernel 3.2 to kernel 3.4 (here) and after that installing fglrx drivers 13.1 (compatible up to kernel 3.5). Here are the steps I followed: Removing (purging) existing ...
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0answers
541 views

C Time.h functions erratic on Precise 12.04

I'm running Ubuntu 12.04 and using the gcc compiler to compile my C/C++ programs. I want to benchmark a function. AFAIK, there are two standard functions to calculate time on POSIX systems and both ...
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0answers
388 views

No device file for partition in /dev/

I did partition /dev/sda1 using fdisk. After creating two partitions, saved the table. And rebooted the server. But there is no device file present for new partitions. :~$ sudo fdisk -l Disk ...
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1answer
2k views

How can I delete a directory on a smb share?

I have an external HDD mounted as a smb share (via a Iomega iConnect), however I can't delete a directory on it: Permission Denied Looking at properties: The permissions of "abc" could not ...
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1answer
4k views

OpenVPN on Ubuntu OpenVZ

I finished configuring OpenVPN on my OpenVZ vps. When I run service openvpn restart I get the following error output: * Stopping virtual private network daemon(s)... * No VPN is running. ...
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2answers
11k views

YouTube will not play in Firefox or Chrome on fresh 12.04 install

First of all let me state I am new to Ubuntu and the Linux platform all together. I decided to install on an older PC (Pentium 3) to get some use out of it. Everything seems to have installed fine ...
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285 views

Execute BASH script on shutdown [duplicate]

I have a KVM switch (Trendnet TK 409) that helps me switch between my Ubuntu laptop and Linux computer. The switch use a hotkey for switching (numlock+numlock). Unfortunatly, that only works on ...
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0answers
393 views

How can I get Canon LBP6020 working on ubuntu 12.04

I was misinformed about Canon 6020 and bought it unfortunately. How can I get it working on Ubuntu 12.04?
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2answers
385 views

Ubuntu version for senior PC

I have been running this PC on Ubuntu 10.10 and it has been pretty great. With the HDD filling up and persistent messages about my version of Ubuntu not being supported I started again on 12.04. I am ...
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0answers
1k views

Unable to fork: Cannot allocate memory

frequently getting 'fork: Cannot allocate memory' when running commands over ssh. I have 64Gb of RAM and usually 1~2Gb free. swap is more than 8gb free Ubuntu version:"Ubuntu 12.04.2 LTS" Desktop ...
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0answers
406 views

Ubuntu 12.04 wifi problem

I just installed Ubuntu 12.04 on an HP Pavilion dv6 laptop. After install the wifi card is working but when i try to connect to my secured wifi router it will show as connected but no internet ...
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1answer
111 views

How can I fix “The package system is broken”? [duplicate]

These are the updates: -Safe and easy web browser from Mozilla firefox -Safe and easy web browser from Mozilla- Unity menubar integration firefox-gobalmenu -Safe and easy web browser from ...
0
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1answer
108 views

12.04 Wifi Problems

I recently wiped my hard drive and installed ubuntu 12.04 on my hp sleekbook 6. Everything in the installation went alright and I installed all the updates. The catch is that I can only be on the ...
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3answers
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Installing Gnome 3.8 on Ubuntu 12.04

Gnome 3.8 is released and I wanted to have it on my system running Ubuntu 12.04. I came across this: Gnome 3.8 on Ubuntu 12.04.2 lts In the answers, it is mentioned that Gnome 3.8 is not available in ...
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0answers
3k views

How to use Grub Rescue when Grub error is “file not found”

I have two visible boot partitions, one of which is historical only, so I wanted to stop GRUB from creating boot menu options for it. I renamed /boot and moved /vmlinux and /initrd.img away from it's ...
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1answer
4k views

Install gnome desktop in kubuntu

I am trying to install gnome desktop from kubuntu. So I did this : sudo apt-get install ubuntu-desktop It ran well but now I am getting this error: sudeep@sudeep:~$ sudo apt-get install ...
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3answers
13k views

Ubi-partman failed with exit code 141 [closed]

I was using Windows 7 and I installed Ubuntu on it without an error then I installed Windows 8 and used installed Ubuntu for some time. When I decided to install Ubuntu (12. 04 version) on my pc again ...
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1answer
3k views

Why did I have to edit /etc/lsb-release to get apt-get to work?

I can't open the software sources window from the software center. I can't use apt-get add-apt-repository (and other things). The error I get with add-apt-repository is: Traceback (most recent ...
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3answers
52k views

Damaged SD card (badly unmounted?) How to fix?

First Off I'm using Ubuntu 12.04 on a laptop with a built in card reader. I have a sandisk 8Gig micro sd card that came with my HTC Desire HD phone. Unfortunately I had mounted it to a windows ...
0
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1answer
82 views

Uninstall apps installed with GNOME3

I have installed GNOME 3 desktop environment in Ubuntu 12.04 and want to free some space by removing apps I don't need. When I try to do so via Software Center, I get a warning that the Gnome Desktop ...
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1answer
1k views

How to install driver for ATI Rage 128 Pro Ultra TF?

This is the driver in question, it promises to be the end of my graphics troubles with my old Rage 128 card. http://www.phoronix.com/scan.php?page=news_item&px=MTA5Mzk The only trouble is, I'm ...
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1answer
1k views

How to run topcoder arena applet using proxy in Ubuntu 12.10?

I was trying to run topcoder arena applet using proxy. I install latest JDK and iced-tea. When I try to run using: javaws ContestAppletProd.jnlp I'm getting: File cannot be launched because ...
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1answer
1k views

Dual Boot Windows 8 and Ubuntu: Grub works, Ubuntu boots, Windows 8 doesn't

I had Win8 installed on my computer and needed to install Ubuntu, so I took a distro and created a live usb pen and installed it. Everything went fine, well not at first because my computer comes with ...
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3answers
5k views

Chrome shows two icons in Unity Launcher [duplicate]

I am a new Ubuntu user. I just installed 12.04. To get Chrome on the Launcher, I clicked the BFB and searched for Chrome, then dragged that icon to the Launcher. However, when I run Chrome, it creates ...
2
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1answer
46 views

Problem with Sproutcore

I am trying to create an application using Sproutcore by doing the following: cd /home/user/Development/Sproutcore Then sproutcore gen statechart_app TestApp When I run the above command I see ...
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0answers
48 views

Ubuntu 12.04.2 nvidia optimus issue [duplicate]

I have installed Ubuntu 12.04.2 on my system (Dell XPS L702x). My system has nvidia optimus and I am not able to install optimus in order to avoid loud fan and other things like very short battery ...
2
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1answer
325 views

XRDP and Hyper-V running on Windows 8 Enterprise

I'm running Ubuntu 12.04.2 as a Hyper-V client and it runs perfectly. But because Hyper-V only allows a small window (800x600) which can not be changed (as far as I know) I've been trying to use XRDP ...
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534 views

HIgh system load and slow file manager after installing Ubuntu One

I have previous experience with my Acer 5820tg and Ubuntu 12.04 32bit but now I have reinstalled it to 64bit version and strange things began to happen :) The only difference in the way I use the ...
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2answers
119 views

Can I run ubuntu 12.10 in my pc? [duplicate]

My system is: Motherboard : ZXI945LM4 Processor : Intel Pentium 4. 2.4 Ghz Ram : 3 GB
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1answer
219 views

how to recover when /etc has been deleted on ubuntu 12.04?

I have accidentally deleted /etc. Does anybody knows how to recover from such a situation ? At least I can use ssh while the server is in rescue mode (dedicated server from ovh.com). I could ...
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0answers
4k views

GPG error while doing sudo apt-get update [duplicate]

W: GPG error: http://apt.newrelic.com newrelic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B31B29E5548C16BF W: Failed to fetch ...