The current 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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27
votes
14answers
46k views

How do I stop video tearing? (Nvidia prop driver, non-compositing window manager)

I have that problem which seemingly afflicts many using the proprietary Nvidia driver: Video tearing: fine horizontal lines (usually near the top of my display) when there is a lot of panning or ...
26
votes
2answers
59k views

How do I increase the open files limit for a non-root user?

This is happening on Ubuntu Release 12.04 (precise) 64-bit Kernel Linux 3.2.0-25-virtual I'm trying to increase the number of open files allowed for a user. This is for an my ecplise java application ...
25
votes
2answers
23k views

Is there another way to restart Ubuntu 12.04's sound system if pulseaudio/ALSA don't work?

I was listening to music, and my sound suddenly went dead in all my applications. I'm using Ubuntu 12.04, which uses pulseaudio, so I tried sudo /etc/init.d/pulseaudio restart, but nothing happened. ...
25
votes
5answers
8k views

How can I remove the Skype panel icon in Ubuntu 12.04 (and earlier)?

As I use the Docky Skype indicator, and the green Skype icon doesn't look good next to all the grey ones -- it would be nice to remove the icon from the system tray. Is this possible? How can I do ...
25
votes
5answers
2k 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 ...
23
votes
15answers
32k views

Connecting Android 4 (Ice Cream Sandwich / Jelly Bean / KitKat) phone to Ubuntu 12.04

I'm using the US Model 16GB version of the Samsung Galaxy S3 (I747), however, I cannot mount it to my laptop from some reason. I have tried using both FTP and MTP connections, but neither work. What ...
22
votes
2answers
18k 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 ...
21
votes
6answers
30k 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?
21
votes
5answers
17k 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 ...
21
votes
1answer
30k views

How do I disable the screensaver/lock in 12.04?

When I'm watching a film in Mythtv the screen turns to black every 10 - 15 mins and I have to log back into Ubuntu. Very annoying! How do I disable the black screen / screensaver / logout in Unity? ...
21
votes
4answers
9k 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
6answers
19k 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
1answer
22k 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?
20
votes
3answers
37k 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 ...
20
votes
6answers
34k 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
4answers
30k 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 ...
20
votes
6answers
15k 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 ...
19
votes
7answers
25k views

Cannot RDP to Windows 7 with Remmina on 12.04 [duplicate]

Since I upgraded to 12.04, I am unable to RDP to a Windows 7 server. All I can see is a pop-up that says "Uable to connect to RDP server ". I am able to RDP using Vinagre, so that rules out any issues ...
19
votes
11answers
24k 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 ...
19
votes
2answers
31k 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 ...
19
votes
3answers
21k 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.
19
votes
4answers
13k 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 ...
19
votes
2answers
26k 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
2answers
2k 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
4answers
52k views

Unable to correct problems, you have held broken packages

After upgrading from 10.04 to 12.04 I am trying to install different packages. For instance ia32-libs and skype (4.0). When trying to install these, I am getting the 'Unable to correct problems, you ...
18
votes
3answers
12k 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
18
votes
3answers
5k views

Why no library files installed for google test on 12.04?

The libgtest-dev package seems only install header files to the system, but not the static and dynamic libraries which should be installed under /usr/lib. Is it a bug?
18
votes
1answer
21k 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?
18
votes
7answers
10k views

Cannot resize windows at lower right corner?

I'm running 12.04 inside VMWare Workstation. What is wrong with my installation so that I cannot resize the window at the lower right corner? The lower left does work, albeit it's really hard to get ...
18
votes
3answers
6k 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
27k 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 ...
18
votes
6answers
28k 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 ...
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
7answers
21k 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.
17
votes
11answers
37k 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
2answers
16k views

How to hide all desktop icons in 12.04?

In 11.10 Using Configuration editor, one used to be able to edit a boolean parameter named : Desktop_Show This allowed to hide/show all desktop icons. This latter was removed in 12.04. Someone, ...
17
votes
6answers
20k 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 ...
17
votes
3answers
4k 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?
17
votes
2answers
18k views

Enabling Mic Mute button and light on Lenovo Thinkpads

I have a mic mute button on my Lenovo Thinkpad T420 , but it doesn't work. So I tried xev command to monitor press event, and that key wasn't captured. Is there anyway to fix it , like add raw key ...
17
votes
2answers
7k 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 ...
17
votes
4answers
23k views

resolv.conf doesn't get set on reboot when networking is configured for static ip

I'm experiencing what appears to be a name resolution issue in Ubuntu 12.04 Server edition when configuring my computer to use static ip. In /etc/network/interfaces: # The primary network interface ...
17
votes
7answers
3k 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 ...
17
votes
1answer
3k 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 ...
16
votes
2answers
17k views

keyboard shortcut for pasting on terminal window [duplicate]

Possible Duplicate: Can not paste into terminal We use Ctrl+V to paste stuff from clip board. But this is not working on terminal window. What is the keyboard shortcut to paste on a ...
16
votes
2answers
17k views

How do I run Python 3.2.3?

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 ...
16
votes
1answer
30k 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 ...
16
votes
1answer
12k 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.
16
votes
3answers
10k views

Anyone succeeded in Using Xmonad in Ubuntu 12.04?

I have been trying hard to configure Xmonad on my Ubuntu 12.04. Will appreciate if someone sheds some light on installation, configuration and if one could also share the relevant files used in ...
16
votes
3answers
4k 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 ...