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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31
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3answers
41k views

How to keep apache and mysql from starting automatically

Is there a way to make apache and mysql not run automatically on startup? Currently, whenever I boot my machine, they start automatically and run in the background. I am using Ubuntu 12.04.
30
votes
2answers
74k views

How to find a text file which contains a specific word inside (not in its name)

I want to find a text file in my hard disk which contains a specific word. I want to use a graphic application. I'm on 12.4 "Precise Pangolin". Prior to Ubuntu 12.4 I used to start in the dash an ...
29
votes
5answers
41k views

What alternatives for sticky notes are available?

I like the Sticky Notes very much, they are always on the desktop. But in the current version of Ubuntu (12.04), I can't find it. Other programs like gnotes & Xjournal are not giving a feature to ...
29
votes
3answers
32k views

How can I install MonoDevelop v4 on 12.04?

I am using Ubuntu 12.04. I can install v2.8.6.3 of Monodevelop from software center but I need at least v3 to use Monogame v3 or higher. Can anyone point me in the right direction please? Thanks
29
votes
3answers
24k views

Trying to start nginx on VPS, I get “nginx: unrecognized service”

Following the How to install rails and nginx with passenger on Ubuntu tutorial from DigitalOcean.com, the seventh step manually starts nginx: sudo service nginx start but fails with the following ...
29
votes
5answers
65k views

How do I move (copy) my entire Ubuntu system to a different hard disk?

The HDD I have my Ubuntu installed is about to fail. I would rather not lose 3 years worth of data, customisation and apps. I am looking for a way to move the complete system (SWAP included, because ...
27
votes
2answers
54k views

how to find the current version of gnome

I'm using ubuntu 12.04. I tried $ gnome-about –gnome-version gnome-about: command not found $ gnome-session --version gnome-session 3.2.1 Why I need is because my desktop environment doesn't ...
27
votes
1answer
32k views

What is the app, “compiz” responsible for on ubuntu 12.04?

When I open my system monitor and check the "processes" tab, I've noticed that regardless of what other apps I have running, "compiz" is always taking roughly 10% of my CPU. It might be a broad ...
27
votes
5answers
3k views

Drag and Drop across (fullscreen) applications, switching via Alt-Tab

Example Drag media file onto Totem's playlist to enqueue Bug in Compiz Especially for Unity (formerly Netbook Edition, being intended for small screens) this is quite a vital feature, as ...
26
votes
2answers
18k views

How to open Nautilus at current command line directory?

I was wondering if anybody knew a command that would allow me to open a Nautilus (if that's the right name for the Ubuntu 12.04 graphic/window explorer) window from the command line at the current ...
26
votes
2answers
32k views

How can I get f.lux working?

I've installed the fluxgui package from Killian Valkhof's PPA (https://launchpad.net/~kilian/+archive/f.lux) and started the applet by pressing alt+f2 and typing in fluxgui. The inidcator icon shows ...
26
votes
2answers
59k views

How can I install Qt 5.x on 12.04 LTS?

If you want to develop with QML 2.0 and Qt5, the base packages don't seem to exist in repository for 12.04. What PPA should I add? Is it a binary installer? a compile the toolkit yourself? Those ...
26
votes
6answers
25k views

Is it normal for compiz to consume 40% of my CPU with no other programs running?

When I have no other programs running, compiz takes up at least 40% of my CPU. Is this normal? If it is normal, is there anyway I could make this program take a smaller percentage?
25
votes
4answers
11k views

How to ungroup windows on task switcher?

I'm playing with ubuntu 12.04, precise pangolin, and there's an issue I can't see how to solve. If I have three instances of, let's say, Firefox, in the switcher appears a single Firefox icon, I have ...
24
votes
3answers
57k views

Changing System name [duplicate]

I am given an old Ubuntu working system and the previous user had everything on his name so started turning it to my name as typing his name everywhere was bugging me. I tried: $ usermod -l hussain ...
23
votes
5answers
38k views

Why won't Remmina connect to Windows 7 Remote Desktop?

I'm using Ubuntu and I'm trying to connect to another machine in a different network using remote desktop. In Windows7 I have made the following in order to activate remote desktop: I've gone to ...
23
votes
6answers
26k views

What is the function of the “Sticky edges” on/off setting in displays?

I have installed Ubuntu 12.04 (Precise Pangolin). If I open System Settings >> Displays there is a new (?) on/off button for a setting named Sticky edges. Can someone tell me what this setting ...
23
votes
2answers
17k views

How to disable Grub's menu from showing up after failed boot

I am performing a test in which I hard-reboot a machine with Ubuntu during its boot sequence (just before login prompt appears). After the reboot, GRUB's menu shows up with no timeout (not its ...
23
votes
5answers
6k 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?
22
votes
4answers
28k 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?
22
votes
6answers
15k views

How to install new tmux 1.8 on Ubuntu 12.10 or 12.04?

Are there any PPA? If no, how to make it from sources? Which dev libs I'll need to do this?
22
votes
6answers
32k views

Hibernate missing from power menu and when I press laptop power button

When I upgraded from 11.10 to 12.04 my Ubuntu power menu has lost the ability to hibernate. Is there a way to add that back in, or is this default for 12.04?
22
votes
10answers
26k views

How can I change the auto-hide function of Launcher to work better? [closed]

I'm new to Ubuntu, 11.10 was the first version of Ubuntu I used, it was very good. I've just made a new install of 12.04 (clean install, not upgrade), it's also very good too but the auto-hide ...
22
votes
1answer
12k views

How can I disable [alt] for search? [duplicate]

Possible Duplicate: How do I modify or disable the HUD's use of the Alt key? In 12.04, the [Alt] key pops up the HUD. That's not a problem, but, when using [Alt]+... it pops up as well. ...
22
votes
4answers
41k views

How can I install a realtime kernel?

I have read a lot of threads with similar questions, but after reading the answers, I am very confused. I have found in them lots of url's with repositories but people discusses about which ...
22
votes
7answers
19k views

Google Chrome not rendering webpages correctly

I am facing some serious web page rendering issues with Chrome. It is more prominent during javascript based animations and stuff on websites like youtube. I have tried removing chrome using (sudo ...
22
votes
4answers
11k views

Why is Rhythmbox becoming the default (again)?

So, it seems with 12.04, they're switching back to Rhythmbox, after switching from Rhythmbox a year ago. I don't get why. They say that it's because of a blocking bug in GTK3# (if I understand that ...
22
votes
8answers
47k views

Stuck on reboot and shutdown

I've recently installed Ubuntu 12.04 and I love it. However I have one problem- I am unable to shutdown or reboot properly. When I shutdown my laptop (Acer Aspire 5560) it hangs on the 5 dots and ...
22
votes
1answer
25k views

Alt + Tab is not working in gnome shell at ubuntu 12.04 [closed]

I have installed ubuntu 12.04 and running gnome-shell. So far almost everything went fine, but Alt + Tab is not working. How can I get Alt + Tab working? or there is some other alternative?
21
votes
3answers
23k views

Permanantly set monitor as primary

I am running Ubuntu 12.04 (beta) with a triple head setup and GNOME 3 desktop (ie "GNOME" selected not "Ubuntu" at login screen). It seems that it handles multiple monitors by blessing one monitor to ...
21
votes
3answers
40k views

Network manager indicator missing

I recently upgraded from 11.10 to 12.04. My first attempt failed, and I received an error stating that not all of the required packages were downloaded. Before (successfully) attempting again, I ...
21
votes
1answer
7k views

Public IP Address for LXC container

Ok, so I want to know how to do networking on LXC containers. Not just the sort of vague information you get from the other websites, but a true beginner's guide to making them work.. Since most ...
21
votes
4answers
16k views

Keep getting messages about internal system errors

I keep getting popups about internal system errors (see screenshot below) on irregular intervals (several times a day), that I don't know what to do about. If I continue through the dialog and try to ...
20
votes
4answers
71k views

How to disable IPv6 on Ubuntu?

I disabled IPv6 on an Ubuntu box which has ssh and rsync running. But both of these are still listening on an IPv6 address. How should I fix this? root@box.com:~# sysctl ...
20
votes
4answers
31k views

VirtualBox Guest Additions won't install on Ubuntu Server 12.04

I am trying to install VitrualBox's Guest Additions on Ubuntu Server 12.04, but keep getting an error. I am using the following command sudo ./VBoxLinuxAdditions.run --nox11 and get the following ...
20
votes
6answers
41k views

Is there any alternative for Windows gadgets in Ubuntu?

I am new to Ubuntu and would very much like to see a weather gadget (aka widgets). Can anyone recommed a simple add-that could give me a little weather, Clock, Twitter Crawl, etc? Thanks
20
votes
3answers
10k views

How to see the actual memory and its properties (slot position, size, speed…)

I have 2 PCs. A Laptop dv600 and an Intel dp35dp. I want a command that shows me how many slots of memory I am using, the size, speed, etc.. For the moment the size of each would be good. Maybe see if ...
20
votes
1answer
28k views

W: GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available:

I get the following error when i do sudo apt-get update W: GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: ...
20
votes
2answers
49k views

How to see/change screen refresh rate or monitor frequency?

My eyes hurt so I thought I should check the screen refresh rate (monitor frequency), but I couldn't find it. Where is it? (in Ubuntu 12)
20
votes
9answers
5k views

Nautilus is very slow

One month ago I updated (no fresh install) to 12.04. Since then nautilus got extremely slow. When I open a folder that contains many subfolders I sometimes have to wait 4 seconds until everything is ...
20
votes
2answers
34k views

What is the best video editor on Ubuntu for editing multi-format/multi-eco?

I have many video clips with different formats and I want to create a short movies by joining them. Most of the clips are taken with Nokia N8 and Lumia 800. I am using Ubuntu, I have tried many of ...
19
votes
4answers
101k views

Installing MS Office 2013 on Ubuntu 12.04 LTS

I am trying to install Microsoft Office 2013 on Ubuntu 12.04 LTS (32-bit). I have downloaded an iso file of said product and installed wine1.4-i386 using the apt-get command on the terminal. The ...
19
votes
2answers
20k views

How do I run Python 3?

The description here says that 12.04 ships with python 3.2.3 as well. What command do I run to get this? Running python -v or python2 -V or python2.7 -V all give me the same result 2.7.3. There are no ...
19
votes
1answer
17k views

Enabling native shortcuts on Gnome - 3

How can I enable the native shortcuts like Alt + Ctrl + T: Terminal Alt + Ctrl + D: Show Desktop on Gnome 3.
19
votes
3answers
7k views

How can I disable the multitouch gestures in Ubuntu?

My workstation with Ubuntu 12.04 is a MacBook Pro which supports a Multitouch Trackpad. Unfortunately, I'm constantly accidentally triggering the three finger touch gesture to resize a window: How ...
19
votes
6answers
53k views

Ubuntu 12.04 x64 - Very slow response and sluggishness

Recently updated to 12.04 (64-bit) on my AMD hex-core 4GB system, over the last few days I feel that the overall system is sluggish/laggy, for instance hitting the dash button, the dash opens but the ...
19
votes
3answers
3k views

How to reduce the spacing between icons in nautilus?

Is it possible reduce the horizontal spacing between icons in nautilus? I would like my layout to be more compact. I know that we can change the zoom level of the icons, but i want the icon size to ...
19
votes
2answers
3k views

Android 3D acceleration in androVM with primusrun?

I have been trying an Android Virtual Machine called androVM on an Ubuntu 12.04 32 bit laptop with Intel/Nvidia hybrid graphics configuration as the guest OS (details on the graphic cards below). I ...
19
votes
0answers
7k views

How well will Nvidia Optimus cards be supported in 12.04? [duplicate]

Possible Duplicate: How well do laptops with Nvidia Optimus work? Will Nvidia Optimus be supported in 12.04?It will be improvements in nvidia optimus drivers? Will no longer need bumblebee ...
18
votes
7answers
24k views

What's the difference between 12.04 and 12.10?

I have an Asus K55V and I'm wondering which version of Ubuntu I should be attempting to use. The website offers 12.04 (LTS) and 12.10.