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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478 views

How to create dm-crypt device in LXC?

On one LXC container I need to put sensitive data, preferrably stored in dm-crypt encrypted filesystem. When I write sudo cryptsetup luksFormat --cipher aes-xts-plain --size 512 ...
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82 views

applications linked to workspaces

I have just upgraded to Ubuntu 12.04 and I found a weird behaviour in the multi-workspace management. Let's say that I have a couple of terminals opened in one workspace, and that I want to do ...
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2k views

Video driver Radeon x1200

I got the issue when I play flash games or videos it's too slow. I reinstalled Ubuntu and it worked smooth for like 5 hours then I rebooted and it was slow again. When I type sudo lshw -C display ...
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79 views

Music lens does not play music through default music player

I have set Rhythmbox as my default music player through System Settings > Details, but when I browse and play music from the Unity dash, Banshee opens up and plays the music. How can I have Rhythmbox ...
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344 views

mystery of missing file modifications (hybrid drive + Ubuntu 12.04)

Last week (Sep 10) I worked a whole day (on my Ubuntu 12.04 HP elitebook 8530p laptop) using a tex editor (TexWorks) and Jabref to maintain a Bibtex library. Today however I noticed all my ...
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2k views

How can I configure a Canon Pixma MG5300 to print wirelessly?

How can I configure a printer to print wirelessly in ubuntu 12.04 ? I have a canon pixma mg 5300 series, and I am able to print correctly by usb (the drivers were installed). Now I'm trying to do it ...
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756 views

Receiving Bluetooth Files from Nexus 7

I have successfully paired and connected my Nexus 7 with my Ubuntu 12.04 PC. I have successfully sent files from the PC to my Android device, but when I try to send files from Android to Ubuntu, the ...
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757 views

alt tab stopped working properly suddenly in ubuntu 12:04 unity

I have been working on my laptop since morning and suddenly before some time my Alt-Tab functionalist stopped working properly. Some times it switchs between the windows some times not , even if it ...
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1k views

Unity launchers and bar disappeared and unity --reset shows an error

I am having a problem with unity. I have launched Movie player with QNapi (application for downloading movie subtitles) and somehow Unity crashed and disappeared leaving just the opened windows ...
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259 views

Segmentation fault when trying to run psychonauts. NOT SOLVED by forcing S3TC-support or getting the needed libraries

So i'm having problems running psychonauts as i've noticed many others have as well. I installed it through software center and made sure i had the right libs needed to run mesa ...
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908 views

Dell Vostro 1510 can't connect using wired connection

I recently dual-booted my system with Windows 7 and 12.04. I can't access Internet through wired connection, in spite of LAN cable in the socket. It says network cable unplugged, but I can access ...
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2k views

12.04 internal error ( Sorry Ubuntu 12.04 has experienced an internal error )

I am running 12.04 LTS. I have been since its release. But all of a sudden my machine now take 5/6 minutes to boot up. I do not have sound anymore, where pulse audio was listed now reads dummy output. ...
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1k views

Tracing IR to Hauppage remote on Mythbuntu 12.04

I have installed Mythbuntu 12.04 on an AMD dual core. Basic TV play and record functions are working, but I am having some troubles with the remote. The card is a Hauppauge WinTV-HVR 1250. I have ...
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949 views

Wireless driver only works after plugging the cable in with a BCM4313

I upgraded to Ubuntu 12.04 this week. I've had a couple of problems with my wireless card. After following some posts here on askubuntu I got it to work on a peculiar way: When I start my laptop ...
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312 views

Sony NWZ-E363 doesn't go in MTP-Mode

i want my mp3-Player to work as MTP. Therefore I added a .config containing options usb-storage quirks=054c:059b:i file to /etc/modprobe.d. To prevent the device from beeing auto-mounted. ...
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449 views

DNS servers not correctly set in VPN

I have to use an OpenVPN network to work from home, and I occasionally have problems getting DNS to resolve. The problem comes and goes, and I can't reproduce it reliably. I took the OpenVPN config ...
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718 views

Enabling middle-click and gestures on multitouch clickpad? (Ubuntu 12.04; Samsung NP900X3A-A03US)

Out of the box (with the xorg.conf from the Ubuntu wiki), left-click, right-click, and two-finger scroll all work flawlessly. However, middle-click doesn't work at all (despite appearing to be ...
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892 views

Webcam stopped working but appears in lsusb, works fine in windows

This has been bugging me for some time now... Laptop: Thinkpad T420 Ubuntu 12.04 Precise When I installed Precise, I could use my webcam without any issue (Cheese, Skype...) However, all of a sudden ...
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4k views

How do I install an Edimax EW-7811Un wireless adapter?

I recently installed Ubuntu 12.04 to my old computer (a Dell) after XP began to run very slow, and am now trying to install a Edimax EW-7811Un 150 Mbps Wireless 11n Nano Size USB Adapter to connect to ...
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556 views

Unity + Gnome 3 broke on update — NVidia card — OpenGL working

Think the title is fairly clear (system specs below) I cannot get Unity (2d works) nor Gnome 3 to load properly since an update run last Friday thus far I've tried installing propietary drivers ...
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637 views

Is it possible to change a laptop's screen-dimming capabilities?

My laptop is able to dim it's screen automatically until it is turned off by Ubuntu to save power, currently my dim screen button doesn't let me turn off my screen completely, my questions are: Is ...
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810 views

How do I install and use the Bluetile window manager in 12.04?

I've been working on getting bluetile working on 12.04 so I can start down the path of tiling windows managers, but I have been having limited success. I have read the (only 7!) other posts on ...
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3k views

Ubuntu 12.04 OpenCL with Intel and Radeon?

I want to setup my Ubuntu 12.04 with OpenCL(Open Computing Language) support for i7 2600k and Radeon HD5870. My Monitor is connected to the integrated Graphics of the i7. Intel OpenCL SDK is ...
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655 views

Wifi will not connect with an Intel Wifi Link 1000

I have an HP dv7t-6100CTO laptop. I have linux ubuntu 12.04 lts dual booted. The specs of my laptop are: - i7-2620m dual core (2.7 ghz) processor - intel wifi link 1000 bgn wireless card I am having ...
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449 views

Saving/Applying Gnome Settings not working

I am unable to change any settings on my Gnome setup, such as favorites in Unity, adding extensions in Gnome Shell, etc.. It appears that the computer just ignores any settings. In Gnome Shell, I ...
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392 views

Vertical scroll doesn't work in some applications on a Dell inspiron 14R

I just installed ubuntu 12.04 and installed all the necessary updates and Gnome Shell. I have ticked "enable horizontal scrolling" and "edge scrolling" in touchpad settings. The scrolling works well ...
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1k views

Ubuntu 12.04 Freezes after removing the HDMI cable or changing settings

I'm using an fresh install of Ubuntu 12.04 and I'm having some problems with HDMI. I usually use it with my TV, but since the update isn't working any more. Sometimes in 11.10 I had to execute a ...
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18 views

Network problems setting up an Ubuntu server in VirtualBox

Before I get into my problem I would like to start with what I am trying to accomplish in case my approach is non-optimal. I want to setup a virtual environment that mirrors our production ...
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79 views

How do we implement requirements of password policy?

This question might look similar but I could not find a solution to this which covers all the below requirements of the policy, Hence please help me: - Incorrect pass lockout (after 3 incorrect ...
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56 views

Running 3 monitors on Ubuntu 12.04

I would like to run 3 monitors on Ubuntu 12.04. I have NVIDIA Quadro 5000 which is able to support 2 monitors. I only have an additional PCI slot so my option are limited for a second graphics card. I ...
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65 views

update-grub fails on lvm cryptoroot

Disclaimer: I'm running this server now but I did NOT install it. I have two disks connected to an Intel Hardware Raid Controller running in RAID1. On top of it there is a fully encrypted 12.04 ...
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216 views

Why can't my udev rules rename kernel device nodes after upgrading from 12.04 to 14.04

In Ubuntu 12.04 I wrote the following udev rules to fix the /dev name of a USB RF remote control. These were: KERNEL=="event[0-9]*", ATTRS{name}=="BTC USB Multimedia Cordless Keyboard", ...
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62 views

Running Chrome extension periodically using a cronjob

I have built a chrome extension that performs a set of actions on a random webpage. The extension seems to work fine and I plan to run it on a VPS running Ubuntu with a XFCE desktop environment. Now ...
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33 views

Unable to find /usr/bin

I am running Ubuntu 12.04 on my machine. Somehow when I tried to boot in next time, it stops me at the terminal window itself. I'm absolutely not able to do anything as it says, /usr/bin/python : No ...
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364 views

Sun Grid Engine Qmon not working on Ubuntu 14.04 LTS

Hello to Sun Grid Engine, UI, and package experts, After installing Sun Grid Engine and trying to run the qmon graphic user interface, the system shows the following errors: Warning: Cannot convert ...
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174 views

AMQP connection closed when nova cells are enabled on Devstack

I have set up Devstack on 3 servers having IPs 10.10.1.51,10.10.1.53 and 10.10.1.54. I configured the devstack on server 53(IP 10.10.1.53) as the parent/api cell and configured the openstack on 51 and ...
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113 views

Unable to boot after update

After a update, Ubuntu won't boot anymore and gives: error: could not read file. If I'm fast enough to press a button to continue, I get Kernel panic - not syncing: VFS: Unable to mount root fs on ...
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105 views

Boot to tty2 on start

On Ubuntu 12.04 I had a server with no GDM. I want to boot to tty2 on start up. What would I put into rc.local? Note* I do not have grub tty1: start on stopped rc RUNLEVEL=[2345] and ( ...
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73 views

Citrix and firefox in ubuntu 12.04 window disappears too fast!

Running 12.04 and got citrix receiver installed OK (I think) but when I go to launch an .ica and I have set firefox to use wfica to handle these files, a window pops up and then disappears super ...
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0answers
99 views

Bluetooth problem on Asus U32 with Ubuntu 14.04

I'm running Ubuntu 14.04 on a Asus U32 alongside Windows 8. Recently I've upgraded from 12.04 to 14.04 and since then the Bluetooth is not working anymore. Whenever I try to turn it on from the ...
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89 views

How can i get yammer notification alert in ubuntu system

I am using yammer in my system with ubuntu 12.04 version. I want notification alert if any message/comment received. Like we have in skype. Can any one know it.
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386 views

No space left on device - Ubuntu 12.04 Server on VMware Workstation

I have Ubuntu 12.04 Server installed and inside VMWare WorkStation 10 and have much space left. Even when I try to create a folder it says: - No space left on device I have much space allocated ...
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201 views

Backup and restoration of USB-modem functionality

The laptop with USB modem is in another city with my elder relative. The laptop has dual boot with XP and Ubuntu. Modem works in XP. The modem did work in Ubuntu but not anymore. I cannot fix the ...
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0answers
80 views

OEM Install in XenServer guest

I am using a XenServer 6.2 pool with many Windows 2008/2012 servers as guests, which I have used SysPrep with to create templates to deploy new servers in minutes. Very cool. I now need to achieve ...
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73 views

How can I get old video drivers back?

No matter what I watch on hulu, or when I watch it, I see annoying flickering. It doesn't happen on youtube, southparkstudios, or various other websites with videos that I have used since since ...
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216 views

Problem connecting Firebird in Ubuntu 12.04 LTS 64-bit

I installed Ubuntu 12.04 LTS 64-bit on a PC I built recently, I installed Firebird 2.5-Classic, then FlameRobin (open-source database administration tool for Firebird), These packages appeared to ...
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415 views

How to block the specific websites using proxy server?

I need to block the social networking sites like facebook, twitter, etc within my office network. I tried some proxy server and enabled settings in browser like giving IP and port number. It works but ...
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0answers
416 views

Ubuntu upgrade to 14.04 doesn't show after interrupted attempt

I tried to update from Ubuntu 12.04 to 14.04 using the update-manager. But the upgrade process stopped midway due to insufficient disk space. I cleared up enough space, and tried to resume by ...
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0answers
84 views

Select account based on password instead of username

Sometimes I might be forced to open my PC in front of strangers for some reason. In front of other people, I would like to make it appear that I'm logging in normally into my computer, but secretly I ...
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232 views

How to change cloud location in deja-dup?

I have recently created an account in surdoc cloud(its a free account). I want to backup my home pc data to surdoc cloud using deja-dup backup. Can anyone tell me what changes should I make to ...