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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2answers
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old kernel removal since lts/hwe

Since the move to 12.04 LTS/HWE, I now seem to have several linux kernel images stored. I don't really care about the detail of what is going on here, but want to know which of the old kernels I can ...
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2answers
3k views

warning:root:file 'precise.tar.gz.gpg' missing

Firstly I tried to install the 12.04 upgrade via the update manager GUI from 11.10 after there was no more updates to install and after a fresh reboot but all that would happen is it would say ...
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0answers
12 views

Virtualbox 3D acceleration doesn't work with Ubuntu 12.04

I'm running 64 bit Ubuntu 12.04 as Virtualbox guest, host is Windows 7 64 bit. Ubuntu works slowly if I disable 3D acceleration in Virtualbox and painfully slowly if I enable it. I have followed ...
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0answers
15 views

unable to install untrusted package

i am new to ubuntu os. unable to install untrusted package. and when i typed this command "sudo apt-get update && sudo apt-get upgrade" in terminal . it will display message "sudo: unable to ...
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1answer
24 views

Install Adaptec RAID 6405 on Ubuntu 12.04 (3.13.0-37-generic)

I'm trying to install an Adaptec RAID controller on Ubuntu 12.04. So far, I've downloaded different versions of the driver, but executing the specified commands yields some errors. sudo dpkg -i ...
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2answers
16k views

The Disk Drive for /tmp is not ready yet. S to skip mount or M for manual recovery

I know this has been asked before, but I can't find an answer that also pertains to this /tmp message. I have 12.04 LTS on a Toshiba laptop, as well as Windows 7. I really just started to dig into ...
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8answers
33k views

How do I adjust the screen brightness on an Acer Aspire One D270?

My system specifications are: Ubuntu 12.04, 64-bit, Acer Aspire One D270, Intel Atom CPU The usual brightness increase/decrease key combination using Fn key doesn't work in Ubuntu as many pointed ...
2
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1answer
168 views

Strange artifacts in 3D programs on Mac

I recently upgraded from 10.04 to 12.04 on my MacBook 7,1. Now, in any 3D program, strange rectangular artifacts cover some of the screen; they seem to be dependent on displayed objects. This is, of ...
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0answers
4 views

USB Drive Always has to be Checked Even After 'Proper' Unmount

I have an ADATA UV150 32GB USB flash drive. The problem I have is that even after unmounting it 'properly' (i.e. pressing the eject button), it is always mounted read only when I connect it again. To ...
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3answers
9k views

How can I reinstall pulseaudio? (12.04 64bit)

I accidentally removed pulseaudio from my Ubuntu 12.04 64bit. I have tried reinstalling it using sudo apt-get install pulseaudio but my sound card doesn't appear in the list of the devices (in ...
1
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1answer
34 views

How to work around Eclipse Luna/GTK bug 339174 (change to not use oxygen)

The bug is described here: https://bugs.kde.org/show_bug.cgi?id=339174 For me it fails with: java: /build/buildd/oxygen-gtk3-1.0.2/src/animations/oxygencomboboxdata.cpp:87: void ...
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1answer
3k 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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1answer
20 views

I recently installed Ubuntu 12.04 on my dell inspiron 1545 and I can't get the wireless internet connection to work?

I am very new to Ubuntu so please explain it in layman's terms. I have found various threads that explain this problem and resolving it using a wired internet connection to download drivers. I piggy ...
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6answers
21k 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 ...
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2answers
303 views

Ubuntu 12.04 - Installing nvidia-current driver fails

EDIT After trying a lot of things I gave up and I installed Ubuntu 14.04. Now I can simply install the proprietary drivers selecting them in the Additional drivers settings. I'm trying to install ...
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2answers
4k views

Diskless with Ubuntu 12.04

I'm trying to setup a new diskless solution with ubuntu 12.04 without any success. I followed this howto: https://help.ubuntu.com/community/DisklessUbuntuHowto But the initramfs seems not to be ...
0
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1answer
27 views

Ubuntu 12.04.4 LTS does not start desktop

I have never worked with Linux before. However, I was able to work with my new Ubuntu computer until I was prompted to update from 12.02 to 12.04, which I did. Immediately after rebooting, I got to ...
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0answers
3 views

Cannot change vncserver default geometry

I'm using Ubuntu 12.04 (I think it's desktop...) and running vncserver to connect to it remotely. I can successfully set the resolution if I use the -geometry flag when starting the server, but I ...
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0answers
23 views

I Can't Install Anything On Ubuntu 12.04, on software cent. nor installing manually

i don't know when or how it started but now i can't seem to install anything, even if manually like this: user@user-HP-14-Notebook-PC:~$ sudo apt-get install cheese [sudo] password for user: ...
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2answers
1k views

Launcher icons are invisible after upgrade from 11.10 to 12.04

I am re-purposing an old laptop. I installed 11.10 on it and then immediately upgraded to 12.04. (I could not directly install 12.04 as my system does not support PAE.) When my system was (briefly) ...
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4answers
6k views

How to enable Wi-Fi on a HP 2000-2302TU laptop

I am using a HP 2000-2302TU laptop. In the System Settings > Network, there is no option for wireless. Only wired and Network Proxy are available. I also searched in "Additional Drivers" and it ...
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1answer
3k views

How to make LTSP log into the Windows 7 VM

I have managed to install Ubuntu server and Mythbuntu and a remote front-end. Now I think it could be nice to integrate my Windows machine with the server and use Linux Terminal Server Project (LTSP) ...
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1answer
3k views

How do I get Ubuntu 12.04 to recognize encrypted swap partition so that I can hibernate?

I just installed Ubuntu 12.04 and used gparted to erase and enlarge my swap partition. When I rebooted, gparted said that the file partition for the swap was unknown. Gparted doesn't let me change ...
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1answer
21 views

Installing pyGPs - A Package for Gaussian Processes

I am doing a project which predicts expected electrical load every half an hour based on Gaussian model of previous 1 year data. I am currently using python 2.7.3 for implementing this project. For ...
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2answers
2k views

How to access hidden GRUB in Xubuntu

I have recently installed Xubuntu 12.04 alongside Windows XP. My parents don't use Xubuntu, so I configured the GRUB file as written in some articles. I changed: GRUB_DEFAULT= 4 #Assuming Windows is ...
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1answer
15 views

Ubuntu 12.04 LTE update caused a kernel panic errors

3 days ago I've updated Ubuntu 12.04 LTE on our server (mainly to get new OpenSSL libs), rebooted, everything was fine. Then after 6 hours server stopped to respond. I rebooted again and it was works ...
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0answers
5 views

Why can't I start a VNC session using the randr flag?

I'm using Ubuntu 12.04 (I think it's desktop...) and can successfully run vncserver (which ultimately links to /usr/bin/vnc4server) and connect with my client, and I can also add the -geometry flag ...
2
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1answer
23k views

Dual Boot On Galaxy Note 2 ? ( Android / Ubuntu )

I want to buy a Galaxy Note 2 tablet/phone and I just wanted to know: how can I have both of these OS's on it at the same time? If there is a way, how can I do it? Is there anyone who can help me? ...
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4answers
20k views

Why does kworker cpu usage get so high?

I recently installed Ubuntu 12.04 on my Samsung laptop alongside Windows 7. Whenever I use Ubuntu (even when its idle) kworker uses almost 90% of one of 8-cores. Even though it doesn't really affect ...
0
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1answer
1k views

Can Ubuntu be installed on my system?

I apologize if this is a duplicated question asked a thousand times, but at the end of 3 days trying to install Ubuntu 12.04 I am close to giving up. I have managed to install it, but I am only able ...
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0answers
10 views

ubuntu 12.04 compiz startup crash [duplicate]

I have ubuntu 12.04 32-bit running fine since 2 months, since last two days I'm having the following problem: When I login, the launcher never appear, window borders do not appear. I have then to ...
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7answers
9k views

Skype sign in: Server Connect Failed

When I try signing in to skype , I get the message "Sign in Failed - Server Connect Failed". To resolve this issue I tried almost everything, from removing Skype completely to install Skype again and ...
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4answers
5k views

Can't install MariaDB 5.5 or 10 in Ubuntu 12.04. MYSQLD Failed to start?

I tried o install MariaDB on my Ubuntu 12.04 server. First it gave dependency issues and I fixed it by following this question : ...
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0answers
10 views

USB flash drive not detected on 12.04

after a "system crash" my usb flash drive is not detected anymore. It contains important data and I need to get access to it. I found that the device is listed as /dev/sde after plugging it in. ...
0
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1answer
8k views

Deluge bit torrent. No incoming connections?

Hi I keep getting a no incoming connections on my Deluge. I know this is a pretty common problem from Google, but I have posted here to see if any one knows why this happens. I have port forwarded my ...
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0answers
8 views

install ubuntu12.04 on dell r710 raid 5

I have created a virtual disk 0 with raid 5 on Dell r710. This virtual disk 0 consists of 6 physical disks. Each disk comes with 1TB disk space. I used the bootable CD that I created to try to ...
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2answers
52 views

Ubuntu 12.04 kernel 3.8 Wireless not working (BCM43142 chipset)

I have a Dell Laptop with a BCM43142 chip on the wireless card. If I'll stay on 3.5 kernel it works with wl driver, but the Bluetooth is not finding any device (like it is off). I tried to upgrade the ...
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2answers
21 views

grub not dual booting win7

New Ubuntu 14.04 installation. Boots straight to Ubuntu. Tried repairing. Here is output of fdisk: Device Boot Start End Blocks Id System /dev/sda1 * 63 ...
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7answers
28k views

Trouble turning on bluetooth in 12.04

I am using 12.04 LTS dual boot, and I can't use the bluetooth service in Ubuntu. It works fine with Windows 7. In Ubuntu I can turn on the bluetooth from the titlebar but when I switch on the ...
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2answers
4k views

Brightness options in Ubuntu 12.04 desktop missing

I am unable to change the brightness of my desktop screen using this path. System settings{top right corner of the screen)>Under Personal Brightness & lock.No option to change brightness is ...
0
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1answer
43 views

Can I resize a physical volume?

I've been trying to solve the following problem 5 good hours now. I've recently installed Linux Mint 17 with LVM, erasing my hard disk. For some reason I want to dual boot Ubuntu 12.04 alongside my ...
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2answers
3k views

Ubuntu 12.04 not connecting to wifi networks

I have a sony viao Laptop installed with Ubuntu 12.04 rfkill list all 1: hci0: Bluetooth Soft blocked: no Hard blocked: no 2: sony-wifi: Wireless LAN Soft blocked: no Hard blocked: no ...
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0answers
16 views

What does + - ? signs mean when running sudo service --status-all? [duplicate]

What these symbols mean? I thought that if the service is running or not, but it is not.
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1answer
16 views

burp: The proxy server is refusing connections from another computer

Ubuntu 12.04.5 LTS (Precise) 32-bit desktop. I have installed burp (an intercepting Proxy), and it works for programs run from the same computer, but when I try to connect from another computer on ...
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0answers
48 views

Rsync with special character files not working as intended between Mac and Linux

I want to use rsync to backup my Ubuntu server with a disk residing on a Mac. But I do not get it to work properly, since every time I re-run the rsync operation after the initial time, the files with ...
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0answers
21 views

Record from two ports of the same source simultaneously with PulseAudio

After a lot of searching and finding nothing which seems to be of any help, I came here to ask help from someone smarter than me. I need to record 2 audio feeds simultaneously. The one is from the ...
1
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1answer
367 views

Windows 7 hangs at grub's purple screen when dual booting

I have installed a new laptop (Lenovo Z510) for dual boot Ubuntu 12.04 and Windows 7 64 bit. After several trials it now works, but I have a strange effect. I always enter the Grub purple screen ...
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1answer
6k views

VPN connection successfully established, but IP address does not change

I have set up an OpenVPN connection via the network manager on Ubuntu 12.04 following these instructions: https://www.privateinternetaccess.com/pages/client-support/#ubuntu_openvpn_installer ...
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0answers
34 views

T400 wireless adaptor not work

My wireless card wlan0 on Thinkpad T400 can work for a short while, after each booting into Ubuntu 12.04. But after a while, maybe an hour later, it starts not working. Here are the outputs of ...
0
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1answer
17 views

Permanent FTP access for user?

I've set up my VPS with a second user foo using sudo adduser foo and then given access ALL=(ALL:ALL) ALL using sudo /usr/sbin/visudo, And then I can use this user to access the server's root ...