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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16
votes
4answers
18k views

Encrypting/Decrypting a single file in Ubuntu 12.04 LTS

I need to be able to encrypt/decrypt a single text file stored on my external HD in 12.04 LTS, preferably a GUI application, if any, or the command line otherwise. Thank you.
25
votes
6answers
24k 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?
19
votes
4answers
29k 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 ...
8
votes
4answers
14k views

How to permanently disable touchpad in 12.04? [duplicate]

Possible Duplicate: How to disable Touchpad? I'm looking for a way to permanently disable the touchpad in Ubuntu 12.04 (my computer is a Lenovo Thinkpad Edge on which it isn't possible to ...
7
votes
3answers
7k views

Connection drops out regularly with a Ralink RT2800

I'm not sure what's causing the problem, nevertheless, I began to encounter regular wireless disconnections after upgrading to Ubuntu 12.04.1 LTS. Using System Profiler and Benchmark utility, I've ...
20
votes
4answers
10k 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 ...
17
votes
4answers
21k 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?
15
votes
2answers
2k views

Is it possible to query maximum ram my mobo takes?

Is it possible to query through Terminal how much ram my motherboard can take? I'm looking to see if i can even upgrade.
11
votes
2answers
29k views

Java on Ubuntu server 12.04? [duplicate]

I'm a little confused at the moment. My back story in short, is that I'm trying to set up a Minecraft server on an Ubuntu server I've recently set up, obviously to do this I needed Java, but after ...
11
votes
3answers
35k views

How can I make Unity 2D the default session at start-up?

I want Ubuntu to always use Unity2D by default. I am using the latest version (12.04 LTS).
11
votes
4answers
14k views

Terminal in Geany

I just installed Ubuntu 12.04, I am a big fan of Geany, but now i don't have the terminal at the base of the window. I have tried to change the terminal preferences, without success. any ideas?
11
votes
2answers
3k views

Key short cut `Super+L` (i.e. `Win+L`) not working for `LockScreen` in 12.04 LTS

I want to change Key short cut to Super+L for LockScreen but it is not working. If I try any other combination like CTRL+ALT+L or CTRL+ALT+G , it works. Win+L combination used to work in 11.10.
10
votes
5answers
24k views

Keyboard shortcuts not working in 12.04? [closed]

I can't get my shortcuts to work, among other things in 12.04. Anyone else with this problem? I'm not very pleased with Ubuntu 12.04 so far. What a letdown!
10
votes
8answers
8k views

Guake terminal showing up wrong in Unity

It seems Guake terminal is not aware of the Unity sidebar being hidden. Even when the sidebar is hidden, it still shows with a left offset that is based on the width of the sidebar. Additionally, the ...
9
votes
6answers
30k views

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 ...
8
votes
2answers
8k views

Why is Eclipse Luna dark theme ugly?

Eclipse luna ships with an integrated dark theme, I downloaded Eclipse CDT and deleted my workspace to reset Eclipse configuration. I switched to the dark theme and restarted Eclipse; the UI doesn't ...
7
votes
2answers
12k views

Are there other gestures for the Synaptics Touchpad besides two-finger scrolling?

I have a Synaptics Touchpad on my Dell XPS 14z and I was wondering if there was any way I could enable some gestures besides two-finger scrolling. Are there any special drivers i need? I've read ...
6
votes
4answers
27k views

Which window manager offers the best stability?

I installed Unity window manager and love it, except that it is always crashing, When I say crashing, I mean that it is unrecoverable, I can't kill anything even from TTY. It occurs usually once a ...
5
votes
1answer
11k views

Record Live stream

How do I record the live streaming screen with audio in Ubuntu 12.04. I read in some forums about Mplayer and VLC player. I tried using download helper, with no luck These are the steps I do ...
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?
16
votes
6answers
34k views

Android SDK having trouble with ADB

So, I installed the Android SDK, Eclipse, and the ADT. Upon firing up Eclipse the first time after setting up the ADT, this error popped up: [2012-05-29 12:11:06 - adb] ...
15
votes
5answers
35k views

How does one recreate a custom application launcher that takes command line syntax and even perhaps parameters?

I had some custom scripts that I had custom launchers for on my desktop on 10.04. I would like to recreate that again after migration to 12.04, but unity seems quite foreign to me.
14
votes
2answers
3k views

Why does powertop still detect tunable settings on >12.04?

According to this Q&A laptop-mode-tools and powertop are not needed anymore with ubuntu 12.04 as the power savings are now included in the kernel. So I decided to remove laptop-mode-tools from ...
11
votes
3answers
4k views

How can I see which video card on my Optimus-enabled machine is being used?

I'm Using Ubuntu 12.04.1 LTS on my Optimus-enabled Asus K55v notebook. This means it features two video cards; an integrated Intel one (1GB shared memory), and a discrete Nvidia Geforce 610M. ...
11
votes
1answer
13k views

How do I send a notify OSD message to a remote user via ssh?

Sometimes we need to send a message to a remote user. We can display messages on our local desktop using Notify OSD, but we are unable to send a message to the remote user's desktop. We tried the ...
8
votes
0answers
3k views

Ubuntu 12.04.2 on a Lenovo T431s [closed]

I'm cross-posting this from the Ubuntu forums as it seems like there's some interest here in this new ultrabook. I'm extremely happy with Ubuntu on it. Ubuntu 12.04.2 on the new Lenovo Thinkpad ...
8
votes
1answer
1k views

Is there a modern and clear tutorial on setting up SSL for localhost / testing use?

Let's say I'm developing a script for login.example.com. I have absolutely no access to login.example.com, but that page loads a script on assets.example.com (which I have access to). To test how ...
7
votes
2answers
19k views

Need Software to compare two text files [duplicate]

Possible Duplicate: File and directory comparison tool? Is there any software available on Ubuntu12.04 to compare two gedit text files for the differences between them. I have two CSS text ...
7
votes
1answer
6k views

user upstart job in ~/.init/ is not found

Running 12.04, I have the following upstart job in ~/.init/: # myjob start on net-device-up stop on [!12345] script echo ">> hello from user script" >> ~/tmp/upstart.log end script ...
7
votes
3answers
4k views

Change Default TTY shortcut

I would like to change the default shortcut to switch back and forth to the tty. By default it is ctrl + alt + F#. I have tried making a custom shortcut using Ubuntu's keyboard settings but it only ...
7
votes
2answers
14k views

How do I get HDMI out working with Bumblebee?

This is a repost of a questions i posted in another question thread that contained other questions. previous quetionI just pulled this out of that question. System: Asus N43J Intel i5 2.53GHz Nvidia ...
6
votes
3answers
6k views

MongoDB suddenly stopped working today (12.04)

After I updated to 12.04 a month or two ago I installed MongoDB via APT. Since that time it has worked well. I made no changes to the config or anything - it just worked out of the box. Today it ...
6
votes
2answers
11k views

Can't add repo keys

I'm tring to add a keys (on Kubuntu 12.04) sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys SOMEKEY and I constantly get gpg: requesting key 8AC93F7A from hkp server ...
6
votes
3answers
15k views

How to remove a half-installed package? (Sun JDK - Java)

I've tried installing Sun JDK from sudo add-apt-repository ppa:eugenesan/java, it failed with the following: Downloading... --2012-05-05 15:50:09-- ...
6
votes
1answer
5k views

How to map a key to another on my keyboard?

My space-bar button is not working any more so i want to change the behavior of it to another key to simulate space button press, so how to map space button to the right alt/windows key ???
5
votes
5answers
11k views

Bad anti-aliasing in some applications

There was an update a few weeks ago that seemed to mess with anti-aliasing in some applications. Firefox, Thunderbird, and the text in some apps such as Mousepad and Leafpad (but not the rest of the ...
4
votes
1answer
8k views

How to Change the Splash Screen [duplicate]

Possible Duplicate: How do I customise my Plymouth theme? I have used a lot of tools to change the Ubuntu splash screen during boot, but the splash screen doesn't change. Please tell me ...
3
votes
2answers
10k views

How do I stop Ubuntu Precise freezing/hanging [duplicate]

Possible Duplicate: What should I do when Ubuntu freezes? At least once a day I lose work on my (2 different) Intel i5 machines running Ubuntu 12.04. The entire system will ...
20
votes
6answers
39k 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
15
votes
1answer
23k views

AMD/ATI drivers from website vs. proprietary drivers in Ubuntu 12.04 Repos?

I have 2 questions regarding to different AMD Radeon drivers: What is the difference between the 3? AMD/ATI Driver ( 12.04 Repo ) AMD/ATI Driver, Post release update ( 12.04 Repo ) AMD/ATI Driver ...
10
votes
2answers
838 views

Is it possible to temporarily disable notifications?

I certainly like notifications in 12.04, but depending on the work I do they can be quite distracting. Is there an official way or a tweak to temporarily deactivate notifications? UPDATE: To ...
9
votes
2answers
4k views

Gnome 3 always hangs after logon

The problem I'm having is that after logging into GNOME Shell 3.4.1 on Ubuntu 12.04.1 LTS. After a short period of time (approx 0-2 minutes) gnome shell becomes unresponsive. Hovering on the corner ...
8
votes
1answer
57k views

configure: error: C compiler cannot create executables

I was trying to install rvm using \curl -L https://get.rvm.io | bash -s stable --ruby --autolibs=enable --auto-dotfiles. It worked fine until I got a configure error: Error running './configure ...
7
votes
1answer
4k views

How to assign hot-keys to control Rhythmbox?

I wish to assign Ctrl+Space to rhythmbox play/pause but cannot figure out how to do so using the keyboard menu, for whenever I try, it is disabled for i do not know what i am meant to type into the ...
6
votes
2answers
31k views

12.04 update and nvidia

I've just have had nasty surprise of graphics not working after latest update (bringing it up to kernel version 3.2.0-52-generic). Apparently after the update it was expecting nvidia-319 driver, while ...
5
votes
7answers
64k views

“Enable Wireless” option is disabled in network settings

I'm using Ubuntu 11.10 (dual booted with Windows 7) but I'm unable to access Internet wireless even though I can do so on Windows 7. The output for rfkill list all is given below: rfkill list all ...
5
votes
5answers
6k views

Hard drive overheats when laptop running on AC power

Here is the deal. When using 12.04 laptop runs so cool and quiet but immediately I plug in, the temperature of the Hard drive starts to go up. (hitting 60•C in no time). However when I unplug the AC ...
5
votes
2answers
15k views

How do I set up the iPhone USB Ethernet Driver?

I just installed 12.04 (fresh install) and realized I could no longer tether with my iPhone like how I did on 11.10 without any hassle. On 11.10 (to my amazement) all I had to do was turn on USB ...
4
votes
1answer
5k views

Ubuntu freezes frequently giving error : GEN6_RP_INTERRUPT_LIMITS

My computer freezes allmost every day. Sometimes just Compiz crashes when I try to open Unity menu. Very often screen just freezes completely and doesn't respond anything. Then I have to restart X. ...
4
votes
3answers
4k views

unattended-upgrades not running, /etc/cron.daily/apt missing

I have automatic-upgrades installed and configured, but it never seems to run, because there are always security updates waiting to be installed when I check. ...