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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ubuntu 12.10 lock-screen unlockable with old ldap password

I have an ldap server that serves Ubuntu clients and there is a problem when unlocking the screen after a user has changed their password. Initial login works as expected: the user can log in with ...
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431 views

msmtp not working?

I was trying to send mail from bash, but it doesn't work and I can't find the reason... So my .msmtprc file is account default host smtp.gmail.com port 587 from account@gmail.com tls on tls_starttls ...
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248 views

Thunar not displaying thumbnails for text files

I have gone through all other posts on thunar thumbnailing issue but this one doesn't seem to match any of those; nor on the web anyone seems to have this problem, so I couldn't find solution on ...
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1k views

Error while recording a RTSP stream with avconv

I need to losslessly record a RTSP stream of an Axis 211a camera using avconv on Ubuntu 12.04. I am using this command : avconv -rtsp_transport tcp -f rtsp -i rtsp://<IP>/mpeg4/media.amp -...
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405 views

Cannot send files through bluetooth from mobile phone to laptop

I have ubuntu 12.04 LTS installed on my laptop. Ubuntu detects bluetooth, and I can also send a file from Ubuntu laptop to my mobile phone (Nokia xpressMusic). But, I am unable to send files from ...
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598 views

How to package shared library in deb packages

My application uses some shared libraries, which i need to package with the binary, and as per Debian Policy Rules It is recommended that supporting files and run-time support programs that do not ...
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129 views

Hardware 3D acceleration suddenly stopped working

I turned on my laptop the other day and noticed that Gnome was not using fancy graphics mode. As far as I know there is no reason my drivers should have stopped working, as I haven't made any upgrades ...
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996 views

Set master mode on a realtek rtl8192ce

The supported interfaces of the network adapter include also AP. But when I try to set the card on Master Mode with iwconfig wlan0 mode Master, I get the following error: Error for wireless ...
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2k views

make windows float behind xfce panel

I would like to make it so windows maximize behind the xfce panel. basically so that all windows DO NOT treat the xfce panel as a dock. I noticed that if I move the XFCE panel away from the ...
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453 views

How to get 12.04's login screen (lightdm) to display the shutdown menu like 10.04 when the computer's physical power button is pressed?

In Ubuntu 10.04 while at the login screen (gdm), when the computer's physical power button was pressed a screen popped up that offered options on shutting down the system (shutdown, restart, cancel, .....
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137 views

How to manage colours of monitor?

When I was on Windows 7 there was a program: Intel HD Graphics control panel. My notebook: Acer Aspire 5750G Integrated videocard: Intel HD graphics discrete video card: Nvidia 630m How can ...
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686 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 $MyDocsCryptDir/$...
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603 views

Screen flicker on mouse scroll

When i log in, everything works well for 5 minutes, then there is blank screen for 2 sec and again the display comes on the monitor but after that, the screen starts flickering on mouse scroll and the ...
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86 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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201 views

How can I wake my laptop from suspend only on power button?

My Lenovo G560 wakes up from suspend in my backpack sometimes and I hate it. I would power off the whole system, but gnome shell (which I like) starts very slowly. Is there a way to make the system ...
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86 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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374 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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3k 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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2k 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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294 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 (libtxc-dxtn-s2tc0:...
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1k 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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458 views

How can I make my ubuntu 12.04 act like an external usb hard drive?

Quick breakdown, I have a Roku 2 XS that has a USB port that you can connect a flash drive or external hard drive to. I also have a box running Ubuntu that is the household media storage center. I ...
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1k 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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352 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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980 views

ubuntu 12.04 stopped showing every usb devices

Ubuntu was running perfectly, suddenly my internal HDD partitions (except file system) and partitions of external HDD disappeared. I was able to mount the partitions of internal HDD via disk utility, ...
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465 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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768 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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1k 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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5k 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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592 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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672 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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929 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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278 views

How do I close entries in my alt-tab menu?

That's right, I want to close a bunch of stuff using my alt-tab window, quickly. Let's say I have a bunch of windows open in an image editing program, for example: I'd like to have a hotkey (e.g., ...
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4k 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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699 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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0answers
557 views

Ubuntu 12.04. Show windows issue. Blank window appears

I've got a problem with an action "show windows" which shows all windows when I reach a right down edge of my screen (similar to Expose at MAC). Since I installed Ubuntu 12.04 this function has ...
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254 views

With Nvidia proprietrary drivers cannot choose monitor launcher appears on

It's awesome that unity now let you choose in which monitor you want the unity launcher to apear. However, once I've install the nvidia privative drivers I can't chose anymore. I force what normally ...
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572 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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398 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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0answers
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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29 views

Is there a way to disable sleep of a remote computer from command line?

It's an Ubuntu 12.0.4 computer that I have access only through ssh. How to prevent it from going to sleep?
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16 views

Font size in XFTE (text editor)

I have to increase my XFTE text editor font size in my ubuntu 12.04 is it possible?
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23 views

System boot up issue

My ubuntu 12.04 freezes at login screen when starts for the first time. But after hard power off there is no problem. This bug occurs only on first boot up. This is a newly installed system. So each ...
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0answers
79 views

How to VNC into current session, instead of creating a new one (from mac)?

I have setup my ubuntu machine to allow remote connections using the default "Desktop Sharing Preferences" panel, and then I used Mac's VNC viewer Share Screens to connect to it, and it works. ...
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48 views

apt-get -f install removed nearly everything

In an attempt to install some statistical software (SAS), I attempted to install virtual box while running in Ubuntu 12.04. I was unable to do so and prompted to use apt-get -f install which I did. ...
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26 views

Ubuntu 12.04: apt-get can't parse repository url if username contains @ ('at' sign)

I added a repository URL that contains to '@' (at sign) to /etc/apt/sources.list.d/myrepo.list deb https://FOO@BAR:PASS@domain.com/xyz precise non-free apt-get update fails with: Couldn't resolve ...
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0answers
100 views

using wifi and Ethernet at the same time for network camera

I have a dlink network camera connected to my ARM board (running ubuntu 12.0.4) using a LAN cable. On the other hand, I also have a USB wiif module connected to my pi, which will be connected ...