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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Constantly prompted to enter wifi password with a Broadcom BCM4323

Our last router worked just fine, I stayed connected to it wirelessly flawlessly (using Ubuntu 12.04 and Ndiswrapper). I installed our new router and now I can't connect to it at all. All 4 mobile ...
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60 views

tint2: Fontconfig error

I recently installed Ubuntu 12.04 LTS. I am attempting to configure tint2, I got it installed and ready to go, but when I go to the terminal and start it up by typing tint2 I get this: real ...
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61 views

what is the first step on ubuntu 12.04 on laptop

Am new on ubuntu and I would like to know what I would have to do first after installing ubuntu. I had ubuntu before but I removed it because my laptop was getting so hot; but now I want to try it ...
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150 views

GNU ddrescue imaging results — 116 errors a lot?

A little background on this. It's an 256 GB SSD drive with Windows SP3 32-bit and it's encrypted with PGP Whole Disk Encryption. The file system is corrupt and unreadable. I first ran Clonezilla to ...
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29 views

Why Does Ubuntu 12.04 logout as soon as I login?

So I was working on ubuntu and I had to go away for about 5 mins and closed my chromebook's screen, when I came back and opened the screen I found out it shut down by itself. So turned it back on and ...
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123 views

Module acpi not found

My OS is 12.04, I'm not able to suspend and wake up my PC at given time, or better if I run sudo rtcwake -m mem -s 120 My PC enter suspend mode and the power-on light turns up after 2 minutes, but ...
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162 views

Overheating problem with driver fglrx on ATI radeon h5000 - mobility radeon h4000

I have an HP pavilion dv6-3127 el, with installed Ubuntu 12.04, i don't use new version of Ubuntu becouse i have overheating problem, temperature about 90 degree, instead in 12.04 i don't have this ...
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145 views

How to switch workspace via the Unity Desktop ICON via Mouse Wheel Specifically

I want to wheel over the "Workspace Icon" in the Unity Switcher to change desktops. (I know you can switch workspaces via COMPIZ which is ok for wheeling the desktop), but I would like to wheel over ...
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98 views

Settings and configurations are not saved on Ubuntu 12.04 LTS

I recently installed 12.04 LTS. Whenever I rearrange the launcher icons they reset to their initial order after a reboot. Also, although I can change the time and date settings, none of the changes ...
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73 views

Applications menu does not find installed eclipse

I just switched from my company's version of eclipse to the stock Ubuntu version. However, when I did: sudo apt-get remove eclipse I found that my company's eclipse remained installed. I figured it ...
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76 views

Combine two hard drives

I have a PC with 2 physical hard drives, each is 500 GB (sda and sdb) I'd like to combine them in one large hard drive (1T). I couldn't find a clear approach on how to do it. I tried LVM with no ...
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242 views

Cannot connect to internet using D-link mobile broadband modem for BSNL network

I am using dlink modem of model DWM-156 as an HSUPA USB adapter with a BSNL network sim in it. I am using Ubuntu 12.04 alongside with windows7. I have defined the network settings in the mobile ...
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743 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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344 views

Sound Driver is messed up, and mic doesn't work correctly under ubuntu 12

Quick Ubuntu12 sound pops on boot and shutdown, and MIC picks up non-existant static. Edit: please note, Audio out is fine. Issue On shutdown and boot I often hear a loud blast from the speakers ...
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80 views

12.04 LTS not able connect to internet when installed, but could connect using LiveCD before installation

I met a strange problem. When I use LiveCD to install ubuntu 12.04 LTS, I was able to connect to Internet through wired connection, choosing "Try Ubuntu". But when I installed it, it could not ...
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49 views

12.04 Unity - Windows Consistently Jump Behind Main Menu Bar

I have run a clean install of Ubuntu 12.04 LTS and installed all the latest updates, and have not made any alterations to the interface. However I am presented with a persistent problem: When using ...
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177 views

Issue Backporting SQLite 3.8.1 to Ubuntu Precise from Trusty

I'm pretty new to all of the packaging of Ubuntu applications and what not so this may not be the correct place to ask this question or there may be a more appropriate place to re-ask this question. ...
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46 views

Which non-free code gets installed by default in 12.04?

Which non-free components/programs ship with Ubuntu 12.04? I’m not referring to non-free software available from the repositories, but only to software that gets installed by default. (I’m not sure if ...
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431 views

How can I get multiple SYBA SI-PEX40057 (Marvell 88SE9230-based) SATA cards to play nice?

I've built a storage server using: Supermicro X9SCM-F motherboard Three Syba SI-PEX40057 PCIe SATA cards Ubuntu Server 12.04 LTS All twelve ports on the cards are populated with storage drives, as ...
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349 views

Stopping e-calendar-factory and e-addressbook-factory

How can I prevent e-calendar-factory and e-addressbook-factory from ever starting? If I manually kill the processes they just start up again? Between the two they are spamming google with 100 ...
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325 views

Binary package for gcc 4.8.2 on Ubuntu 12.04?

Following this answer, I have installed gcc 4.8.1 on Ubuntu 12.04 a couple of months ago. Unfortunately, I encounter bugs very frequently, varying from failing to compile valid programs to crashing. ...
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147 views

Canon MP600 USB-connected Scanner is not recognized by sane-find-scanner

I have a Canon Pixma MP600, which is supported by xsane with pixma backend. I have Xubuntu 12.04, this is the result of sudo sane-find-scanner -v command: searching for USB scanners: checking ...
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538 views

Up, down, right arrow keys and delete key not working

I have already read Delete and arrow keys not working and tried what is written there. I have also tried restarting my computer. I have also searched elsewhere for answers, but I haven't found any ...
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505 views

disable intel gpu in ubuntu 12.04

I am wondering if there is anything to disable the intel gpu on ubuntu 12.04. I want to be able to setup dual monitor using nvidia-settings. It seems the intel gpu is used for display as suggested by ...
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65 views

net_cls and ns subsystems not available in 12.04?

I'm playing around with cgroups and I noticed when I try to list all available subsystems that the network ones are not available ? Running the following command should list ALL available subsystems - ...
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180 views

Raid 5 mdadm --grow drops performance, no increase in disk size

I've set up a Raid 5 system at home for the first time. I've added 3 disks into the pc, and parted them all in 1 partition of 8G, and 1 partition of the remaining 492G then I made 2 raid volumes with ...
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243 views

Several keys on my ASUS desktop keyboard are not working in Ubuntu 12.04

After installing Ubuntu 12.04 on my ASUS G10AC, several keys on my keyboard (ASUS G01 KB) are not working at all. This includes both CTRL keys, both ALT keys, and both WINDOWS keys. When I use the ...
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234 views

Unable to select Chrome updates on Ubuntu 12.04

I own two machines, both of which are running Ubuntu 12.04. I use Google Chrome on both. A Google Chrome update is available, and it appears in the Update Manager. However, I cannot select the ...
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340 views

sharing between ubuntu 12.04 and windows8 with online user

I've searched for solutions and tried numerous things but nothing so far has worked. I'm trying to access shares on an ubuntu 12.04 pc from my windows 8 pc. In my win8 machine I can see the shares, ...
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179 views

NTPD segfaults on 12.04 LTS (64-bit)

Fresh install of Ubuntu 12.04 LTS. Installed ntp, but starting the service only results in the following error: grsec: Segmentation fault occurred at 0000000000000008 in /usr/sbin/ntpd[ntpd:28951] ...
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382 views

Ubuntu 12.04 won't shut down - stopping winbind daemon

My Precise Pangolin sometimes won't shut down - the screen is black with text on it. Mostly last line says something like stopping winbind deamon (sometimes also virtualbox, which is above winbind ...
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1k views

Crashing system - how to xhci_hcd unload and only allow ehci_hcd in Ubuntu 12.04, 13.04 for debug some usb hardwares

I have few USB hardware who is using 500mA (5V) power, after reserching found that external power supply or hub was the solution but that was a waste of time, even doing external power the problem ...
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868 views

USB Ports not Recognizing Devices?

I have a particularly odd problem, that I can't seem to solve. I recently just booted Ubuntu 12.04 LTS to my Desktop, the strange thing about it is, that only the USB 3.0 ports on the front recognize ...
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170 views

Low Quality Screencast with kazam and recordmydesktop?

I created my first screencast recently using Kazam screencaster and edited it in kdenlive. But the quality of video is low, pixelated. I tried RecordMyDesktop, it is buggy and doesn't show a few parts ...
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434 views

Installing linux-generic-lts-quantal in 12.04.3 via preseed

I'm struggling with getting this working. The problem is, the backported raring kernel breaks OVS. So we need the quantal kernel. I've tried this in my preseed: d-i ...
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177 views

Can I have a Ubuntu 12.04 live usb work with both the -persistance and -toram additional boot options?

I really like using the Ubuntu 12.04 live CD/USB's "-toram" additional boot option for my laptop because "-toram" adds a few extra hours to the battery and makes things a little faster. I add the ...
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422 views

How to count battery cycles?

Like most user that have searched about knows, Manufacturers ACPI implementation is a mess. And for most of our laptops, battery infos are unavailable or wrong (on a dell inspiron 15z, the rate is ...
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40 views

Infiniband + Maas?

I'm looking at setting up an HPC based on Mellanox Infiniband rather than Ethernet. Because I have many nodes to manage, I was looking at trying something new, like MAAS. I know Infiniband cards ...
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66 views

Is it necessary to change hostname following cloning to multiple machines?

I am cloning multiple laptops in a school environment with edubuntu 12.04. There are some network issues that have resulted with machines not connecting to the wireless. There are 130 machines in ...
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677 views

How can I create an X server that has a backing store?

So I am completely new to Ubuntu (I am running 12.04 on a Toshiba Satellite). I am trying to remotely access my work computer but I keep getting an error reading: "xevas: requires a X server that ...
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256 views

Install wont boot up, stuck on loading text dots / restarts

Friend gave me her laptop, we agreed on Ubuntu, but I have troubles even booting up live version (see the notebook). I tried 12.04 64bit on USB stick, it does nothing, when I choose booting live ...
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220 views

How do I perform maintenance on a master DNS/DHCP (BIND9/ISC-DHCP) Ubuntu server?

I'm running non-GUI Ubuntu Server 12.04.2 LTS (64-bit) on my 2 DNS/DHCP servers. Both servers are running BIND9 9.8.1-P1 and ISC-DHCP-SERVER 4.1.ESV-R4-0ubuntu5.6. Please note that for DNS I'm ...
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291 views

In Ubuntu 12.04, odd whining/humming coming from left side of MBP (2,2)

I have been searching for a similar issue to mine, but unfortunately haven't found anything. Anyhow, this week I installed 12.04 on my 2006 MBP (2,2). Pretty much everything seems to work OK, but ...
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330 views

Problem with bluetooth turning on in 12.04(Kernel 3.2.0-34 generic) on Dell insprion 1520

I've Dell inspiron 1520 Laptop and have installed 12.04 Ubuntu in it, I'm trying to turn on the bluetooth device on the system, In the notification bar it shows, bluetooth is turned on and under ...
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646 views

CUDA is not working on Ubuntu 12.04

I'm planning to start some CUDA development, so I'm trying to use the NVIDIA card that I have installed and I haven't yet be able to use (an NVIDIA Corporation GF108M [GeForce GT 630M]) because Ubuntu ...
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2k views

apt-get update is not working

Hello Ubuntu Community, I have been working with Linux for 5 years, and with those five years, I have never had a problem with the Ubuntu apt program. It usually works like a charm and is an instant ...
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535 views

Canopy Express in Ubuntu 12.04 32-bit doesn't start

I installed the 32-bit version of Canopy Express in my Ubuntu 12.04 32-bit machine. I followed the installation guides here. Then when I run the program I get the following dialogue: Permission ...
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2k views

Cannot ping to my router even though wifi is working

I recently installed Ubuntu 12.04. I have been unable to ping to my default local gateway, much less connect to the internet since my installation. Below is my output to ifconfig: Output of ...
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251 views

how to set an include system directory in the Eclipse Platform

From the 'Ubuntu Software Center', I have installed Eclipse Platform Version: 3.7.2. and 'eclipse-cdt C/C++ Development Tools'. In the eclipse Samples at Eclipse.org, I see only these for java, not ...
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255 views

RecipeCloudfoundry Chef Compile Error in cloudfoundry/vcap/dev_setup/cookbooks/cloud_controller/attributes/default.rb

I've just installed Cloudfoundry Server PaaS on Ubuntu 11.10 following this step-by-step guide. How do I install the same on Ubuntu 12.04? I have tried to install cloudfoundry v2 on Ubuntu 12.04 ...