Ubuntu 12.04 (aka Precise Pangolin), is the sixteenth release(version) of Ubuntu from Canonical.

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15
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2answers
11k views

Why Virtual Box won't give me option to create 64 bits guests?

My host is x64 bits Windows 8.1. I downloaded the latest Virtual Box (4.3) and I'm trying to create a VM with a 64 bits Ubuntu OS (ubuntu-12.04.3-desktop-amd64). When I go to New VM wizard, it ...
8
votes
3answers
3k views

VirtualBox 4.1.20 (Windows 7 / Ubuntu 12.04 (64 bit)) copy/paste is broken

I can't make copy/paste between Windows and Virtual Ubuntu 12.04 to work with this configuration: Host: Windows 7 Professional with VirtualBox 4.1.20 Virt: Ubuntu 12.04 (64 bit) with all ...
7
votes
1answer
621 views

How to tab completion when typing command in tmux?

Some commands (kill-session and kill-server) have the same prefix. When I type (prefix:kill-seTab), tmux won't give me any result. Is there a option to show wildmenu for auto-completion inside tmux? ...
6
votes
1answer
5k views

Set default terminal in Ubuntu 12.04

I've set the default terminal using sudo update-alternatives --config x-terminal-emulator but every time I press Control + Alt + T, it still opens up gnome-terminal. I would like to change it to ...
6
votes
2answers
29k views

NVIDIA graphics driver in Ubuntu 12.04

So my overall goal is that I want to be able to code with CUDA enabled applications. However, upon many days of searching, using installation walkthroughs, and reinstalling countless times after ...
5
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2answers
6k views

How to install libfaac-dev?

I edited /etc/apt/source.list to have restricted and partner repository, but the results always: sudo apt-get install libfaac-dev .... .... E: Unable to locate package libfaac-dev The package is ...
5
votes
5answers
697 views

install ubuntu on my windows 8 laptop

Is it possible to install ubuntu on my windows 8 laptop? dual boot is fine if it is doable This is my laptop environment. UPDATE: I ended with installing vmware player It works great for me. I ...
5
votes
1answer
191 views

How can I configure my PC to turn on when it receives power?

How to make a server turn on when it gets mains power? I have an electricity timer and when it turns on, I want the server to turn on. My BIOS doesn't support the wake up at time function so this is ...
5
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3answers
2k views

Changing ownership without the sudo command

I was setting up a Ubuntu Server and I wanted to allow the FTP client to access the /etc/ folder. So I used the chown command to allow my account to use it. However, this changed the ownership of sudo ...
5
votes
2answers
2k views

Yellow noise (small lines) when Chrome is playing video

When I try to play video on Google Chrome Version 24.0.1312.52. I see small yellow lines over a video. How can it be fixed? Thanks. UPD Ubuntu 12.04 LTS That problem appears only when I play videos ...
5
votes
5answers
13k views

How to use public-key ssh authentication

I have 2 ubuntu 12.04 (beta) servers (node1 and node2) and want to establish passwordless root access between them. Other users should not have access to other boxes. Also note that ssh default port ...
5
votes
1answer
118 views

Can I “Speed Up” a VM to emulate the passage of time?

I'd like to put a VM into "fast forward" so that I can see several days (or weeks, or months) worth of logs and temp files build up and analyse them. Is that possible with virtualbox & ubuntu ...
5
votes
1answer
3k views

Ubuntu 12.04 booting in command line?

I just restarted my Ubuntu OS and now, for some reason, my Ubunut 12.04 boots in command line...without the GUI? I use Wubi and haven't really done anything out of the ordinary. I've managed to get ...
5
votes
0answers
1k views

How do I make Ubuntu start fbterm in the tty on startup?

When I was testing openSUSE about a week ago, I noticed that tty1 (yes, just tty1) had the openSUSE background. I want to do the same in Ubuntu. I found a way using fbsplash. I'm not too keen on that ...
4
votes
2answers
4k views

Unable to update Google Chrome stable on Ubuntu LTS 12.04

When attempting to run sudo apt-get install google-chrome-stable, I'm presented with the following message The following packages have unmet dependencies: google-chrome-stable : Depends: lib32gcc1 ...
4
votes
4answers
456 views

List of all the users that logged in using GUI or Command Line

I need to calculate the total time that a specific user stay logged in per day. And stop user using the computer more than the time allowed by shutting down the system. uptime cannot be used since ...
4
votes
1answer
2k views

Midnight Commander doesn't use .mc/ini file

I installed Midnight Commander and tried to change the colour scheme, but unfortunately it doesn't apply the ~/.mc/ini file. It's Midnight Commander 4.8.1, on Ubuntu 12.04. When I installed it, it ...
4
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0answers
82 views

Upgrade from 10.04 to 12.04: apt/aptitude debug information

I have an issue mentioned here: during update from 10.04 to 12.04 The workaround: apt-get -f install -o APT::Immediate-Configure=false python-minimal seems to work, but there are two problems with ...
3
votes
2answers
6k views

Automount ZFS zpool in Ubuntu 12.04

So, I've been told that ZFS for Linux has the ability to automatically mount a zpool on system startup in Ubuntu 12.04, but it doesn't work for me and I can't find any documentation on how to make it ...
3
votes
1answer
2k views

How to depend on an upstart job from an init script on Ubuntu 12.04

I am using Ubuntu 12.04 LTS and this system uses primarily upstart jobs. Unfortunately my system also depends on a manually compiled dbmail server, which only has a init script, but no upstart script. ...
3
votes
1answer
11k views

Why is my crontab not running

I have this cron 38 * * * * /bin/bash -l -c 'cd /var/rails/site/releases/20120705144335 && script/rails runner -e qa '\''Play.load_lists'\''' I have this cron under the a different user so ...
3
votes
1answer
1k views

How to install workrave to prevent RSI on Ubuntu 12.04

I wanted to install an application to prevent repetitive strain injury. I tried workrave, but it does not install. I do not know how to compile the source. Is it possible to do something about it?
3
votes
2answers
5k views

How do I reactivate my MDADM RAID5 array?

I've just moved house which involved dismantling my server and re-connecting it. Since doing so, one of my MDADM RAID5 arrays is appearing as inactive: root@mserver:/tmp# cat /proc/mdstat ...
3
votes
2answers
1k views

Ubuntu installation will not boot, throws error missing file: /dev/sdc1

I tried to install Ubuntu 12.04 and received the continuous message loop: udev[number]: timeout: killing '/sbin/blkid -o udev -p /dev/sdc' [number] I suspect this error happens due to a missing ...
3
votes
2answers
976 views

Panning screen on eeePc 701 with Ubuntu and Xfce

I am trying to get panning work for my Asus eeePc 701. I installed Xubuntu 12.04 on it (runs great), but it won't move the visible area of the screen around when moving the mouse to the screen ...
3
votes
1answer
3k views

Is it possible to upgrade Ubuntu 12.04 Beta 2 to Final without reinstalling?

If I install Ubuntu 12.04 Beta 2 now, is it possible to upgrade to Ubuntu 12.04 Final when it is released without reinstalling everything from a disc?
3
votes
2answers
163 views

How can completely back up my linux computer so that it can be fully restored easily?

I want to be able to blindly back up my entire hard disk, so that I can blindly and automatically restore in case there is any problem. I am not interested in merely backing up data, but specifically ...
3
votes
3answers
22k views

How to install GNOME 3.8 on my ubuntu 12.04?

I just saw UI of GNome 3.8 and it is awesome. I want to have it, but I don't want to disturb my current setup of ubuntu 12.04. Please tell me if I can install GNOME 3.8 UI on my ubuntu 12.04 without ...
3
votes
1answer
2k views

Can't delete free space partition or merge with other partition

Few days ago i installed Ubuntu 12.04 LTS alongside my Windows 7 64 Bit. I installed Ubuntu through live CD installation, but instead of giving it a partition of 200 GB i gave Ubuntu more than a ...
3
votes
1answer
272 views

Ubuntu server loses exactly 5 minutes once in a while

I noticed that my server, an Ubuntu server 12.04, was losing time. I figured the hardware clock was off or maybe dying due to a faulty CMOS battery. I installed NTP to ensure the drift would be ...
3
votes
2answers
3k views

Install Ubuntu 12.04 in UEFI mode on a HP Pavilion dv6-6c40ca

I have recently (as of July 2012) bought a HP Pavilion dv6-6c40ca laptop. It came pre-installed with Windows 7 on an MBR. I installed Ubuntu 12.04 on it on a GPT partition in what I think is BIOS ...
3
votes
1answer
608 views

How to add CLASSPATH parameters permanently when using sudo?

On Ubuntu 12.04.2 LTS 64bits, when using sudo or sudo -i or sudo su or even su in a session, in order to use both Java AND Scala I need to enter the following commands: sudo -i ...
3
votes
1answer
675 views

Minimize boot time on headless ubuntu

I am trying to remove as much processes as possible to minimize the boot time on a beaglebone running ubuntu minimal. So i want to remove udev-fallback-graphics and all plymouth processes. I tried ...
3
votes
1answer
116 views

How to set up samba share for win network

TY in advance for all help I'll get on this issue. I got this unpleasant task to set up an Ubuntu server with samba for file server. To make it more complicated I have to do it as follows: 4 ...
3
votes
2answers
585 views

KVM VMs randomly hang on Precise after 10.04->12.04 swapout

I have nearly 140 vms that were running on Ubuntu 10.04 using KVM. Different OSes in the VMs, but mainly 10.04 VMs. They ran well under 10.04. I did a full wipe of the OS disks and brought in all ...
3
votes
1answer
208 views

Ubuntu 12.04 error message E: dpkg was interrupted

In Ubuntu 12.04 I got an error message saying: E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem. After I ran that command, nothing happened and the ...
3
votes
1answer
3k views

sudo + x11 application does not work correctly

I couldn't get any program requiring x11 (e.g. gedit, nautilus) to work with sudo. Using gksudo would just fail silently, while on terminal I received the following error: sudo nautilus ** ...
3
votes
1answer
362 views

emacs --no-window-system customization

I'm using emacs -nw as my editor on my Ubuntu 12.04 system. However, the --no-window-system does not use the colors of the terminal. QUESTION How could I change the default colors of the emacs ...
3
votes
1answer
215 views

What is causing a tiled screen during installation of 12.04 on Emachines EL1200-01e?

I'm getting a tiled screen while installing Ubuntu 12.04 32 bit (and now 64 bit) on my EMachines EL1200-01e. No idea what could be causing this. EMachines EL1200-01e Processor Type AMD Athlon 64 ...
3
votes
1answer
1k views

Configure NAT on router PC

I have a problem with NAT configuration. I made my laptop to be a router, using Ubuntu 12.04. In the terminal, I typed: iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE but the client still has ...
3
votes
1answer
139 views

Installation VT220 terminal in Ubuntu

I want to know how to connect a Digital VT220 terminal to PC-Linux with Ubuntu 12.04 using a serial-USB device. At the moment I did next steps: sudo vi ttyS1.conf (at /etc/init) # ttyS1 - getty ...
3
votes
1answer
362 views

HiDPI mode on Windows or Linux

OS X has a very nice looking HiDPI mode where the effective screen resolution is only the half of the monitor resolution, but with very smooth looking fonts. Is something like that also available for ...
3
votes
1answer
243 views

Why don't my certificates match?

I'm configuring a VPN with OpenVPN without interfaz, the problem is when I try to connect, it says: TLS Error: TLS key negotiation failed to occur within 60 seconds (check your network connectivity) ...
3
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0answers
1k views

How do I setup my Ubuntu 12.04 PPTPD Server properly?

Ok so I have setup a PPTPD server and configured it appropriately. Here is my pptpd-options: name pptpd require-mschap-v2 require-mppe-128 ms-dns 8.8.8.8 ms-dns 8.8.4.4 proxyarp nodefaultroute ...
3
votes
1answer
380 views

EC2 Ubuntu with WordPress can't connect to RDS

I have set up a WordPress website on a Ubuntu 12.04 Amazon ec2 machine by following this tutorial except the fact that I haven't created a MySQL database and I am using an amazon RDS MySQL service. ...
3
votes
2answers
1k views

Install VirtualBox on Ubuntu 12.04.1 (on [Samsung] Chromebook)

I have dual booted Ubuntu Linux 12.04.1 LTS on my Samsung Series 5 ChromeBook, and am trying to run/install Oracle VirtualBox (from the generic .run file downloaded from their website). However, every ...
3
votes
1answer
213 views

How to pass Combining characters for custom keyboard layout in Ubuntu?

I was creating my custom keyboard layout(custom tamil keyboard layout) in Ubuntu 12.04 platform based on this post. I edited the file /usr/share/X11/xkb/symbols/in as specified in the post with my ...
3
votes
0answers
662 views

Push entire account from one IMAP server to another IMAP server (ubuntu & thunderbird)

Esteemed Superusers, My institution recently reshuffled our email accounts. I'm forced to shift years worth of carefully currated email (= more chaos than a 3 year old's birthday party) from IMAP ...
3
votes
0answers
49 views

Seemingly inconsistent output from `top` re: Swap header vs. SWAP column

How should I interpret this seemingly inconsistent output from top re: swap? Running free confirms that no swap space is in use: $ free -m total used free shared ...
3
votes
2answers
1k views

Windows 7 BSOD, safe mode working,

I need help getting my dualboot with Windows 7 and Ubuntu 12.04 to work, and since I'm not to experienced with computers I've been pretty dumb. Here's what I've done, quite shortend though: First ...