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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28
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2answers
34k views

How to uninstall VMware Player on Ubuntu 12.04?

I want to uninstall VMware Player on my Ubuntu 12.04 LTS system. How should I uninstall it?
26
votes
3answers
25k 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
26
votes
2answers
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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 ...
25
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 ...
24
votes
3answers
52k 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 ...
24
votes
2answers
17k 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 ...
24
votes
2answers
43k 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 ...
22
votes
6answers
31k 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
2answers
13k 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 ...
22
votes
6answers
22k 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 ...
22
votes
7answers
17k 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
1answer
21k 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 ...
22
votes
6answers
23k 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?
21
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 ...
21
votes
4answers
37k 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 ...
21
votes
2answers
13k 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 ...
21
votes
1answer
45k 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 ...
21
votes
4answers
10k 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 ...
21
votes
1answer
24k 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
6answers
38k 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 ...
21
votes
4answers
15k 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
26k 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 ...
20
votes
6answers
38k 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
32k 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.
20
votes
5answers
5k 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?
20
votes
1answer
5k 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 ...
20
votes
2answers
32k 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
6answers
13k 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?
19
votes
5answers
25k 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 ...
19
votes
4answers
28k 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 ...
19
votes
2answers
30k 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 ...
19
votes
3answers
6k 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
9answers
4k 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 ...
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
23k 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.
18
votes
3answers
54k 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 ...
18
votes
3answers
7k 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 ...
18
votes
2answers
19k 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 ...
18
votes
1answer
9k 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. ...
18
votes
3answers
5k views

Can I alt-tab windows from all workspaces?

I put certain windows on certain spaces, but prefer alt-tab to switch between them. Is there a toggle or other option to turn on the alt-tab from all workspaces in unity?
18
votes
6answers
23k views

Unsatisfied Link Error and missing .so files when starting Eclipse

I upgraded to the 12.04 beta yesterday. Now, when I try to start Eclipse, I get the splash screen and then this error message: An error has occurred. See the log file ...
18
votes
4answers
53k 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 ...
18
votes
3answers
9k views

How do I disable the Unity keyboard shortcut overlay?

Is it possible to disable keyboard shortcut overlay in Ubuntu 12.04?
18
votes
1answer
15k 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.
18
votes
0answers
6k views

How do I turn off the onscreen keyboard on the lock screen? [duplicate]

The lock screen has an on screen keyboard that I am unable to disable. I don't remember exactly but I believe I turned it on using the "Screen Keyboard" setting in the Universal Access settings. I've ...
17
votes
3answers
10k views

Why does Google Music Manager refuse to open in 12.04?

I like to upload my music to my Google account and I use Google Music Manager to do this. When I downloaded the music manager the first time, I wanted to actually download all the music I purchased ...
17
votes
11answers
40k views

Skype on 12.04 x64 does not start even after purging and reinstalling it

I am wondering if there's anyone here who managed to use Skype on 12.04. It used to work (ever since I first tried Ubuntu 10.04) flawlessly, but after upgrading to 12.04, it just doesn't start. If I ...
17
votes
7answers
16k views

Python HTTPS requests (urllib2) to some sites fail on Ubuntu 12.04 without proxy

I have an little app I wrote in Python and it used to work... until yesterday, when it suddenly started giving me an error in a HTTPS connection. I don't remember if there was an update, but both ...
17
votes
1answer
34k views

GRUB complains of “no such partition” after installing 12:04

I have just installed 12.04. I previously had 11.10 installed, with /dev/sda6 as the install partition mounted at / and with /dev/sda1 mounted at /home. When installing 12.04, I duly selected the ...