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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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 ...
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 ...
9
votes
1answer
11k 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 ...
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 ...
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
2answers
30k 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 ...
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
10k 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 ...
5
votes
7answers
59k 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 ...
4
votes
3answers
3k 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. ...
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 ...
4
votes
1answer
7k views

Change default 'Print Screen' save folder [duplicate]

Possible Duplicate: Default save directory for gnome-screenshot? The Print Screen window that appears when pressing the ImprPant button (at least, that's what it's called in my keyboard) ...
2
votes
2answers
5k views

linux graphics utility intel

The linux graphics utility from intel say it doesn't support 12.04. Since 13.04 is only supported for 9 months and 12.04 is LTS, why would 12.04 be considered obsolete and not receive support? Or is ...
0
votes
2answers
5k views

Change the terminal prompt [duplicate]

This can be really trivial,but it helps in ways of making it more comfortable while coding and sending commands to terminal. My terminal source/bash/root name(my apologies, I dunno which is the right ...
16
votes
2answers
2k views

How migrate my keyring (containing ssh passprases, nautilus remote filesystem, pgp passwords) and network manager connections?

I changed the disk on my laptop and installed Ubuntu on the new disk. Old disk had 12.04 upgraded to 12.10 on it. Now I want to copy my old keyring with WiFi passwords, ftp passwords for nautilus ...
13
votes
2answers
7k views

LLVM/Clang 3.1 & libc++

Has anybody built and setup an Ubuntu Precise PPA for LLVM/Clang 3.1? A bonus would be to have a recent version of libc++ integrated into it aswell.
12
votes
3answers
9k views

How do I install the ray-tracing application POV-Ray on 12.04?

I'm surprised (and disappointed) to see that the classic ray-tracing program povray has been dropped from the repositories on 12.04. What is the best way to install it? It doesn't appear that anyone ...
11
votes
3answers
39k views

How to deal with a frozen screen? [duplicate]

Possible Duplicate: What should I do when Ubuntu freezes? My OS is Ubuntu 12.04. Sometimes the screen suddenly becomes frozen, except that the mouse can move around. I have no choice but to ...
10
votes
5answers
38k views

How to upgrade Ubuntu 11.04 to 12.04

I didn't see this asked elsewhere here, but how does one go about this? I did sudo apt-get update && sudo apt-get upgrade on a laptop last night but it did not upgrade up to the latest ...
10
votes
3answers
4k views

Natural Scrolling doesn't work in 12.04 in some windows. Where should I report the bug?

Natural scrolling using ".Xmodmap": pointer = 1 2 3 5 4 7 6 8 9 10 11 12 doesn't work anymore in 12.04 on some Ubuntu-specific apps like the Software Center, settings window, and update-center. Under ...
9
votes
2answers
814 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
1k views

Will CCSM work better with 12.04?

in my ubuntu 11.10, compiz completely knackered my setup and I was wondering wil this still be a problem with all the unity plugins in 12.04?
8
votes
4answers
8k views

Dropbox is taking too much CPU time. How can I fix it?

I recently noticed that Dropbox is taking about 50-90% of my CPU for more than just a few seconds sometimes - mostly when downloading/syncing many or large files. Still, I guess that even when ...
8
votes
6answers
3k views

Brightness setting not remembered on an Asus X54H

So I set the screen brightness using either the function keys or the brightness & lock app. After a reboot or plugging in A/C the brightness goes back to max. When I take A/C off brightness is ...
8
votes
2answers
2k views

Brightness setting is reset to maximum at login

My laptop's screen brightness is auto set to maximum at login (= at the login screen already). Even after I have adjusted it to lower it is again set to maximum after annother login. Is there a way ...
7
votes
1answer
11k views

Upgrading to python 2.7.5 on Ubuntu 12.04

Ubuntu 12.04 comes with python v 2.7.3 by default. I want to upgrade it to v 2.7.5. I tried the instructions given in this question, sudo apt-get install build-essential sudo apt-get install ...
7
votes
5answers
5k views

“Open containing folder” in Firefox does not use my default file manager

My system default is Nautilus. But when I right-click in Downloads and choose "open containing folder", it opens Thunar and not Nautilus. How can I change that?
7
votes
1answer
1k views

How will be the LTS support for Xubuntu after 3 years?

Hi :) I'm comfortable with Xubuntu 12.04 because I have an older computer, but I was reading about the LTS support: Ubuntu 12.04: Supported until april 2017. Xubuntu 12.04: Supported until april ...
7
votes
5answers
22k views

Can't configure 5.1 audio with 12.04

I have an Intel ALC892 and a Nvidia GT 520m connected to speakers via HDMI. On lspci, I see 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02) ...
7
votes
1answer
5k views

Why there are two brightness control file (/sys/class/) in my system

I own an dell xps 15. I guess the following is because I have hybrid graphics system (nvidia optimus). When I run command to find out lcd brightness path using following command, ls ...
7
votes
4answers
22k views

VSFTPD configuration problems with 12.04

So I upgraded my Ubuntu Server to 12.04 LTS today and now VSFTPD wont work. I think it is related to this VSFTPd stopped working after update. However, unlike the asker in that post, I am not ...
6
votes
5answers
9k views

How to enable fingerprint device for Thinkpad t430s in 12.04?

I followed different tutorials to enable fingerprints reading, but without luck. Fingerprint GUI keeps saying no device found. Any help on this? = Edit Following first answer = I followed the ...
6
votes
5answers
18k views

Webcam doesn't work in browser…?

I'm running the latest version of Ubuntu, and I have a Dell Sp2009wfd monitor with built in microphone and webcam. I've gotten the microphone working on mumble and on sound recorder, and I've gotten ...
6
votes
1answer
7k views

dnsmasq sometimes resolves things, sometimes it doesn't

Trying to resolve: nslookup testserverinlocaldns Server: 127.0.0.1 Address: 127.0.0.1#53 ** server can't find testserverinlocaldns: NXDOMAIN After 10 seconds everything is ...
6
votes
1answer
6k views

Why won't Thunderbird report notifications to the indicator-applet on 12.04?

Just upgraded to 12.04 from 11.04, using the default Unity desktop. I don't seem to be getting anything from the Messaging indicator applet. I'm running all the default things that I installed this ...
5
votes
2answers
5k views

Ubuntu Software Center crashes due to error in its Python code

I searched for that, but did not find any reference to it on this site. If you know some, please refer me to it - the issues I have seen have different symptoms. So, to the point... I had Ubuntu ...
5
votes
1answer
9k views

Ubuntu joining a active directory domain

during the command sudo domainjoin-cli join *domain* *user* I get the error removing the .local and just using the domainame I get this error Pretty new with Ubuntu and don't know what to ...
5
votes
2answers
6k views

The battery indicator& Power setting panel shows wrong battery state

My laptop is Thinkpad E420 with Ubuntu 12.04 64-bit installed, the kernel version is 3.2.0-33-generic. I have set the battery threshold as 60% via windows7. It seems that the threshold auto effected ...
5
votes
1answer
2k views

Change system settings depending on whether a monitor is plugged in

I'm currently using a Laptop running Ubuntu 12.04. When I'm at work I plug in a monitor, mouse and keyboard. Then I close my laptops screen and use it as a normal pc. Everytime I plug it in and plug ...
5
votes
1answer
848 views

Laptop shuts down upon waking from suspend

The computer enters suspend either by closing lid, choosing suspend from the top-right drop down, or hitting the power button and pressing suspend. It doesn't matter. I then attempt to wake the ...
5
votes
5answers
9k views

Ubuntu 12.04 not shutting down properly

When I shutdown or reboot my Ubuntu 12.04 it doesn't ever finish shutting down. I end up stuck on a black/blank screen and have to hold the power button to shut it down. Does anyone know where I can ...
5
votes
2answers
26k views

Re-enable graphical root-login on 12.04 LTS

On Ubuntu 11.10, I enabled the graphical login as root by (at least I think so) running sudo passwd After upgrading to 12.04 LTS, the graphical option has gone, while su in the Terminal is still ...
5
votes
2answers
9k views

How do I get a Dell Latitude e6420 working?

I've just installed Ubuntu 12.04 (64-bit) on a brand new Dell Latitude e6420, and I'm having a few problems. This laptop has an Optimus (?) setup - i.e. integrated gfx and an Nvidia Quadro NVS 4200M. ...
5
votes
3answers
2k views

How can I change the icon for Jupiter?

I installed Jupiter to try to improve my laptop's performance, and it's doing rather well :D However, I use the Radiance theme (white windows, white topbar, black indicator applets etc.) and Jupiter ...
4
votes
1answer
147 views

Use of PPA to send simple updates

I wish to setup a PPA to send simple changes to several hundreds of ubuntu 12.04 machines in the field. Simple changes mean that bash script changes and configuration file updates and possibly other ...
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
2answers
590 views

Ubuntu 12.04 is sluggish

I have a Lenovo G580 (4GB DDR3, ~500 GB HDD, Intel i3). I installed Ubuntu using the in-Windows installer on my Windows 7. Ubuntu was (and still is) slightly sluggish. By sluggish I mean, the OS GUI ...
4
votes
1answer
3k views

Speed up apt-get update by removing known ignored Translation-en

I've mirrored some ubuntu repositories to a an internal repository using apt-mirror however due to http://serverfault.com/questions/93437/apt-mirror-does-not-mirror-the-i18n-directory i get the ...
4
votes
4answers
9k views

The NVIDIA X driver is not new enough to support the nvidia-settings Display Configuration page

I've been trying without success to configure dual monitors on 12.04, I've installed the nvidia drivers but the gui tool doesn't seem to support my graphics card. Any Idea on how to resolve this? ...