Fourth LTS (Long Term Support) release of Ubuntu, code-named Precise Pangolin. Released on 26th April, 2012. Will go End Of Life (EOL) April 2017. Only use this tag if your question is version-specific.

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Validity Fingerprint Sensor not detected

I have a VFS471 Validity Fingerprint driver that is not detected in my HP Probook 4530s. Can someone help?
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virtualbox- error on importing

I have offline computer with (computer_A): OS: xubuntu (12.04) virtualbox: 4.1.44 guest: ubuntu 14.04 I have another computer(computer_B): OS: windows 7 virtualbox: 5.0.6 guest: ubuntu 14.04 ...
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2answers
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Boot into Ubuntu from Android Tablet with Live USB Drive

I have an Android ASUS Slider tablet. I have successfully installed UBUNTU to an 8GB thumb drive. I would like to boot into the thumb drive the same way I do with a windows system except I would like ...
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Ubuntu 12.04 LTS problem with external monitor, super old laptop

I've just got a 'new' old laptop Hasee Q540S (graphics VESA: 6330) and I wanted to use LG 27MP37 as an external monitor. The problem is: monitor works (lets say it displays 80% of laptops view, with ...
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2answers
20k views

Why after fresh Ubuntu 12.04 installation update aren't being installed?

I've installed Ubuntu 12.04 on a computer. Everything is fine without update. Just after the installation, it was showing about 200 MB updates to download. Since then I'm trying to install all the ...
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1answer
33 views

How to fix the “Unable to calculate upgrade” issue from command line when upgrading from 12.04 to 14.04?

I'm running Ubuntu 12.04 on DigitalOcean server. I would like to upgrade it to later releases (12.04->14.04->16.04), but fail to do so due to the mentioned mistake. DigitalOcean provides a tutorial ...
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2answers
5k views

Changing resolution in Ubuntu Server 12.04

I'm a linux newbie and I've now tried lots of different ways of doing this, but every single one fails somewhere - usually because they pertain to Ubuntu desktop rather than server and rely on ...
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4answers
40k views

Making a Bootable USB flash drive which will boot in EFI

I have recently bought a laptop with windows 8 (EFI) installed. I thought I'd be able to handle installing 12.04.2 relatively easily - how wrong could I be? Using a live-usb I made using startup ...
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1answer
4k views

Dual Screen will only mirror after 12.04 upgrade

I have been using Ubuntu with a dual screen for years now, after upgrading to 12.04 LTS i cannot get my dual screen working properly Graphics: 01:00.0 VGA compatible controller: Advanced Micro ...
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2answers
4k views

Why do I get disk I/O errors booting the 3.2 kernel on a xen vps server?

I have a xen vps, which I just upgraded to the new LTS 12 Precise Pangolin. However, I see this error on booting: [ 12.848076] end_request: I/O error, dev xvda, sector 12841 [ 12.848093] ...
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3answers
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Ubuntu 12.04 does not shutdown

I am using Ubuntu 12.04 amd64 desktop. It worked fine, but after the last update, the system does not shutdown. It gets stuck with the last line on the screen being: unmounted /kernel/debug I ...
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3answers
5k views

Unable to enable wireless on a Vostro 2520

I have a Vostro 2520 and not sure how to enable wireless on my machine. The details are given below, would appreciate any pointers to resolving this issue. lsmod returns Module Size ...
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1answer
31 views

Stuck on BIOS splash screen (Dell manufacturer logo) [on hold]

My computer always gets stuck during boot at this screen: Is this a problem of Ubuntu or the computer itself and how can I fix it?
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1answer
349 views

how to use modeswitch

I a 3g data card, on my window system I can access its memory but I cant access the memory of the device so my question is How I can access memory of my data card on Ubuntu 12,04 ? why my device is ...
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1answer
20k views

Ubuntu 12.10: Package libc6-dev-i386 is not available

I'm building 32 bit boost thread libraries on 32 bit Ubuntu 12.10. When building I get the error /usr/include/gnu/stubs.h:7:27: error: gnu/stubs-32.h: No such file or directory I googled the problem ...
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2answers
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Ubuntu 12.04 problem with E160 huawei - can't detect the device and freezing system

I have just installed 12.04 and plugged in E160 and nothing happened - modem doesn't mount. I have found this solution : Ubuntu does not mount some Huawei devices due to bugs, problems etc. See if ...
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2answers
5k views

How to install dssp (secondary structure assignments) under 12.04?

I am trying to install dssp on ubuntu 12.04. I am new to ubuntu. I tried this sudo apt-get install dssp Please give suggestions.
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2answers
4k views

How to disable xscreensaver lock on suspend?

I have recently installed Ubuntu 12.04 LTS and have installed xscreensaver. As I am the only user on this computer and I am only using the computer for music, movies, and some web browsing I have no ...
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4answers
11k views

Where does Deja-dup keep its config files?

Deja-dup (now Ubuntu Backup) is just a GUI for duplicity, therefore it should store the config files somewhere. I would like to changed the backup volume size to something like 300MB and the increase ...
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4answers
9k views

Wireless Network Found, can't connect, repeated requests for authentication

After trawling through the internet, on forums, support websites, and through dozens upon dozens of answered questions on this site, I've not found a solution to what seems like a fairly regular ...
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1answer
6k views

play audio through bluetooth speakers in 12.04 using CLI

I have gone through the whole gamut of trials with setting up playing audio through bluetooth and have not been able to make it work reliably (i.e., got it to work one time, and has not worked after ...
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0answers
55 views

Ubuntu 12.04 - Wifi is not working ok. Password-asking screen is not prompting after click

I know that you are thinking "this has been posted already thousands of times". But I feel that my problem is slightly different. My model is an HP-pavilion dv4 The point is that, when trying to ...
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3answers
103k views

Is this a correct way to enable htaccess in Apache 2.4.7 on Ubuntu 12.04

In almost every solution of "How to activate htaccess", they say that the /etc/apache2/sites-available/default file needs to be edited. But there isn't such file in Apache 2.4.7 I read somewhere ...
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0answers
16 views

No suitable module for running kernel found - ubuntu 12.04 on LINODE

I am trying to install VirtualBox with Vagrant in Ubuntu 12.04 on a Linode VPS. Everytime I try installing VirtualBox i get an error saying No suitable module for running kernel found {fail}...
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53 views

Ubuntu 12.04.5 wireless connectivity stopped working all of a sudden

Ubuntu 12.04.5 wireless connectivity stopped working all of a sudden from today morning onwards. I am able to access Skype, but not any website through my wireless carrier. I have tried different ...
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3answers
5k views

Spanish accents on US keyboard

I have a good-old fashioned US keyboard. Looks like English (US). How can I get Spanish accents on Ubuntu 12.04 ? This article says I can use RightAlt + a but the aritcle goes only to 11.04. ...
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3answers
83 views

Data storage on ubuntu AWS

My client needs 500 GB data space on cloud (AWS). I had created a ubuntu 12.04 and wonder how do I give my client access to my ubuntu share on AWS? How will my client access it and can they map it as ...
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5answers
6k views

dual booting Ubuntu 12.04 and windows 7 (partitioning scheme)

I would like to ask for help on dual booting because it's my first time to try dual booting and a novice on Ubuntu or any Linux distribution. I have 2 partitions on my hard disk: Windows 7 C:\ ...
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2answers
6k views

Update QEMU on Ubuntu 12.04

Currently Ubuntu 12.04 comes with QEMU 1.0, and I would like to update this to a newer version (1.5/1.6) to achieve maximum performance. However, there doesn't seem to be an apt package for versions >...
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1answer
2k views

How can I install wireless adapter driver for Digisol DG-WN3150Nu in ubuntu 12.04?

I am using HP Pavilion 15-n011TU and I have problems with wireless LAN driver. Unfortunately as per this link there is no Ubuntu driver for the device. So I have purchased a USB wifi dongle (Digisol ...
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2answers
7k views

Nvidia Powermizer Performance Levels

Is there anyway to configure Nvidia Powerimizer performance levels? My current setup has 3 power levels with the lowest one being 50mhz. The problem with this it that it lags compiz when it goes to ...
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4answers
4k views

How to install Ubuntu on an HP Mini netbook?

I have a Hp mini netbook that has been wiped clean, there is nothing other than the bios on it, it has no DVD and I don't have an external DVD. I can change the boot order to boot from a usb device. ...
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2answers
177 views

Make Ubuntu acknowledge that a custom built version of PHP is installed

I'm trying to install PHP from source code on my Ubuntu 12.04 VPS. I'm using these parameters in the configure command: --enable-intl --with-openssl --without-pear --with-gd --with-jpeg-dir=/usr --...
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2answers
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How to install software raid 0 on ubuntu 12.04 server with mdadm?

I need to install a software raid-0 array on a Ubuntu 12.04 server with mdadm through commandline (SSH). The drive setup is as follows: SDA = OS SSD SDB = HDD for raid 0 SDC = HDD for raid 0
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1answer
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Turn off MySQL --skip-grant -tables

I reset my root mysql password with the following instructions: (Works for Ubuntu as well) http://www.debian-administration.org/articles/442 But now I can't turn off mysqld_safe --skip-grant-tables. ...
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2answers
9k views

Second monitor recognized but only black screen

I am running 12.04 on a Toshiba Portege laptop. The graphics card is an Intel 945GM/GMS. The 2nd monitor is an Asus (Ancor Communications 22"). When I connect the monitor to the computer the monitor ...
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1answer
5k views

Fn keys for Brightness not working on Toshiba Satellite L755

I am running Ubuntu 12.04 and I love it! The only problem is the keys for my brightness, F6 and F7, does not work when I am on battery power or AC power. It randomly works after I am idle for a while ...
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4answers
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Tata Photon Plus not working in Ubuntu 12.04 though configured and was running once upon a time.

I have installed Ubuntu 12.04 few months back. My modem, Tata Photon Plus got connected after a number of unsuccessful trials and I browsed the net successfully. But since a month, it is not getting ...
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2answers
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Failure to upgrade or update [duplicate]

Could someone help me know what is wrong with my laptop? I failed to update or upgrade with my terminal or update manager. The system in terminal returns an error of unable to fetch some archives ...
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2answers
558 views

Laptop screen goes blank after 33 seconds of inactivity

I have a Lenovo Thinkpad T60 running 12.04.4 LTS, Precise Pangolin; the desktop is KDE. Starting today, the display goes blank after 33 seconds of inactivity. Clicking or even moving the mouse, or ...
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3answers
25k views

XAMPP opt/lmapp/lampp start script is doing nothing

I installed Xampp for Ubuntu 12.04. I was able to reach the Xampp splash page/index page. Then, when I clicked on myphpadmin, it wasn't working and I would get an error page. So instead I tried ...
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1answer
4k views

How to make ubuntu gateway?

i am new on Ubuntu. i want to make a gateway. i have some 25 systems and switch but i don't have any server. i want to setup a system as a gateway system and want to make a firewall. i want that ...
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0answers
24 views

How to disable giving inputs through terminal

How to disable giving inputs through terminal its a keyboard shortcut that is used by my sir ,when i tried to install through root the screen gets blank and whatever you enter won't be displayed and ...
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9answers
98k views

500 OOPS: vsftpd: refusing to run with writable root inside chroot() Keep user jailed

Before you close this out to repetition, I have been researching all of the proposed solutions to this bug and so far I have been unable to keep a FTP user jailed to their website directory. While I ...
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0answers
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Ubuntu 12.04.5 LTS unbearably slow after entering passphrase for WiFi

I've installed Ubuntu 12.04.5 LTS on an (quite old) IBM ThinkPad T40. Connecting to the internet using LAN works perfectly fine, but as soon as I "Enable Wireless" in the Network Manager, choose a (...
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2answers
993 views

error: parsing file '/var/lib/dpkg/updates/0001' near line 0: newline in field name `#padding'

I was try to install mono using the following command: sudo apt-get install mono-* I closed the terminal while it was installing. I restarted the install, and I got the error message: Could not ...
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1answer
4k views

How to add a specific keyboard layout in LXDE?

I'm using Ubuntu 12.04 with Unity and LXDE. I use a phonetic keyboard layout to write Bengali in Unity. Now, I want to use LXDE, because of its better performance on my PC, but problem is that, I can'...
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9answers
11k views

How do I get the IP address of an LXC container?

I've written a few scripts to manage LXC containers, and I can get their IP addresses via ifconfig, assuming I'm connected to the console. I now want to connect to these containers via ssh. How do I ...
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2answers
4k views

Unable to Connect MTS Mblaze modem in Ubuntu 12.10?

I am using Ubuntu for 1st time and I do have an modem MTS Mblaze in India which I am using in Windows. But when I tried to connect in Ubuntu 12.10 using give default method (i.e. choose country, ...
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1answer
23 views

airodump-ng not working

I am a beginner to Linux. I am having trouble with the command airodump-ng mon0. As soon as I do it I see the error: Interface mon0: ioctl(SIOCGIFINDEX) failed: No such device. I have tried: ...