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• How to make unity unresponsive in Unity session in precise?

  - by Anwar Shah

  Recently I wanted to test the a keyboard shortcut, which is supposed to kill X server (hence very useful when you have a crash). That shortcut is not dependent on any particular window manager (like lxde, unity, kwin etc). So, it must work, even when you have unresponsive window manager (as opposed to Alt+Ctrl+Backspace which kills the session, and bring you a login screen). That's why I interested to make my WM (unity) unresponsive. Is past, it was very easy. Opening a terminal, typing unity --replace and then force close the terminal, was the simplest procedure. But unfortunately, This is not true in Ubuntu 12.04, (they make it very robust) Because whenever I kill the terminal, Unity automagically restart itself. I also tried compiz --replace but wasn't successful. My question is: How can I make Unity unresponsive while I am in Unity session, so that window manager does not recognize any keyboard shortcut.

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• Does an onboard video affect the X windows configuration?

  - by Timothy

  Does the onboard video on the motherboard affect the X windows configuration? My system has onboard and pcie video. The onboard video is a NVIDIA GeForce 7025 GPU, On Board Graphic Max. Memory Share Up to 512MB(Under OS By Turbo Cache). I have a pcie dual head video card installed with two monitors. The video card is a GeForce 8400 GS, with 512mb memory. When installing Ubuntu 12.04, only one monitor worked. When pulling up system settings- Displays it shows a laptop. This is a desktop pc. I did get both monitors to work using nvidia using twinview -- A complicated process! When checking nvidia now it shows the monitors disabled. The Nvidia X server setting does show the GPU and all the information. I was thinking it's seeing the onboard video on the motherboard. Why else would it show laptop?

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• ISO checksum menu in nautilus

  - by dellphi

  I'm using Ubuntu 11.10 x64, Unity, and Nautilus 3.2.1 I want to be able to perform checksum ISO in Nautilus. I have searched and found: http://www.addictivetips.com/ubuntu-linux-tips/nautilus-actions-extra-add-more-features-to-ubuntu-context-menu/ and perform the procedures written in it. Once completed, the other menus appear, except the menu for "checksum verification". Then, when I run gksu nautilus-actions-config-tool I just asked to enter a user password, and .... nothing happens. What should I do, to bring up the "checksum verification" menu? I am very grateful for any response or advice given.

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• How to install an older version of Java

  - by Alex Spurling

  I updated my installation of the sun-java6-jdk package today to version 6.24-1build0.10.10.1 after being prompted by the update manager. However this now causes some compilation failures so I'd like to revert back to the previous version that I had installed. I've tried using Synaptic but the 'Force Version' menu command is disabled. I've tried the following command to install the previous version sudo apt-get install sun-java6-jdk=6.22-0ubuntu1~10.10 But I'm not sure that I have the correct version: Reading package lists... Done Building dependency tree Reading state information... Done E: Version ‘6.22-0ubuntu1~10.10’ for ‘sun-java6-jdk’ was not found I've taken this version number from this changelog: https://launchpad.net/ubuntu/+source/sun-java6/+changelog Is this the correct way to install a previous version of a package? Have I got the correct version from the sun-java6 change log?

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• VM VirtualBox doesn't allow to enable 64-bit guest on Ubuntu 12.04 and Lenovo G500S

  - by Filip

  I've installed VM VirtualBox v. 4.3.8 on my Ubuntu 12.04 LTS (Lenovo G500S with Intel 1005M processor) and I can't configure any 64-bit guest (nor Windows, neither other OS). Inslalation of Win 8.1 64-bit under 32-bit profile obviously fails... My processor supports VT-x technology, but in my BIOS there is no enable/disable option for VT-x. Is there any way to force VirtualBox to support 64-bit guest ?

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• Application switcher is broken

  - by Byron Hawkins

  After a normal update of my Ubuntu 12.04 install last week, my application switcher has stopped working. I've tried all different settings in CompizConfig, including a variety of shortcut keys and both switcher versions ("Application Switcher" and "Static Application Switcher"). So far there has been no way to get any form of application switcher to appear on my screen. Can anyone give me an idea what might be wrong, or where I might look for more information? Thanks for your help.

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• What music player for Ubuntu is *most* like Cog?

  - by mattshepherd

  Cog is, far and away, my favourite music player. File browser on the left panel, pull a folder into the right panel, it plays the files you pull into the main box. Simple! Easy! Nice! Especially since I store all my music on my non-primary drive. Cog doesn't care where I keep my music! It just deals with whatever folder I tell it to monitor. I also have about 200 gigs of music. It's a problem, I know. I can't find a player this simple and elegant in Ubuntu. Amarok: doesn't handle non-primary drives very well. Banshee: kinda good, but fussy browsing/playlist systems. Audacious: no file browser; it also crashes whenever I try to "import" all my music. All I want -- seriously -- is something where I can look at my MP3 folder, drag a folder onto a playlist, and have that playlist play the songs.

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• Is there a difference between "." and "source" in bash, after all?

  - by ysap

  I was looking for the difference between the "." and "source" builtin commands and a few sources (e.g., in this discussion, and the bash manpage) suggest that these are just the same. However, following a problem with environment variables, I conducted a test. I created a file testenv.sh that contains: #!/bin/bash echo $MY_VAR In the command prompt, I performed the following: > chmod +x testenv.sh > MY_VAR=12345 > ./testenv.sh > source testenv.sh 12345 > MY_VAR=12345 ./testenv.sh 12345 [note that the 1st form returned an empty string] So, this little experiment suggests that there is a difference after all, where for the "source" command, the child environment inherits all the variables from the parent one, where for the "." it does not. Am I missing something, or is this is an undocumented/deprecated feature of bash? [ GNU bash, version 4.1.5(1)-release (x86_64-pc-linux-gnu) ]

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• Add Eclipse to Unity Dock in Ubuntu 12.04

  - by csilk

  I'm using the following eclipse.desktop file [1] on the Unity dock but I keep seeing the following error [2] in the ".xsession-errors" file everytime I click the Eclipse icon. Are there any ideas why this is happening? [1] [Desktop Entry] Encoding=UTF-8 Name=Eclipse Comment=Java IDE Exec=/bin/sh /home/USERNAME/eclipse/eclipse Icon=/home/USERNAME/eclipse/icon.png Categories=Application;Development;Java;IDE Version=1.0 Type=Application Terminal=0 [2] /home/USERNAME/eclipse/eclipse: 5: /home/USERNAME/eclipse/eclipse: Syntax error: "(" unexpected

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• Making my own custom Ubuntu

  - by Benny

  I was wondering, is it possible to make my own customized version of Linux based on Ubuntu 10.10 ? I am thinking of calling it something different but I was wondering besides making a custom Live CD I am talking about an Linux that people can install on there computers using Ubuntu installation method. I want to base it on something other than GNOME but be able to install it latter on. Thanks in advance, Benny

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• How do I encrypt but share a number of folders?

  - by d3vid

  I want to achieve the following functionality. Is it possible? Boot up computer (possibly via WakeOnLan or WakeOnPlan). Either be automatically logged in, or log in via login screen, or log in remotely. I change this behavior occasionally, so full disk encryption wouldn't work for me because it requires a password on bootup (which would it would prevent the remote bootup options, and the automatic login option). I am only interested in encrypting data, not the entire harddrive. Once logged in either: a launcher/tray icon is available to launch encryption app (preferred) run encryption app from the dash Prompted to unlock encrypted folder(s) individually. Unlocked folders are available to: me, apps I am running (e.g. editors, SpiderOak) Ideally, folders that I share with bindfs can be locked/unlocked by other users too. A key point is that once I have unlocked an encrypted folder, I don't want to have to think about it again. I currently achieve this via TrueCrypt (except for the last part). Unfortunately TrueCrypt isn't well integrated with Ubuntu (licensing issues prevent Debian from including it in their repo, the interface isn't quite integrated with Unity, setting it as a startup app doesn't quite work, sharing encrypted folders isn't really part of its design). Is there an alternative to TrueCrypt that is better integrated with the Ubuntu GUI and would suit this workflow?

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• Upgrading from raring to saucy broke many of my fonts in certain applications

  - by valadil

  I upgraded from raring to saucy over the weekend. Two of my applications, dzen2 and xmobar, won't display the fonts they used to. I'd mostly been using fixed and 6x12. xmobar doesn't run with these fonts. dzen2 shows some generic font I can't identify. I can change the size but not the font. The only exception is terminus. I looped over xlsfonts and piped them into a dzen2 to see what still worked. Variants of terminus were fine. Everything else used the same generic looking font face. No idea why. I haven't found any other applications with font issues since the update, but I haven't tried too hard to look either.

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• Stop using flash? Or improve the flash experience?

  - by Detnuomnu

  I'd like to setup my Ubuntu to work without Flash (= not installed), but still be able to view videos on sites like Youtube, wisevid, etc. I want to try this because recently Flash has crashed a couple times. It also often 'feels' sluggish. Also a couple other flash related questions here got me thinking there might be a better way of doing things. So how should i do this? Note: Answers that have flash + work-arounds are also welcome.

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• Integrated webcam in lenovo t410 not working with 12.04

  - by kristianp

  I have a Lenovo T410 with an inbuilt webcam and I haven't been able to get the webcam working. I tried skype, cheese, both just give me a black window. The microphone works fine with skype, by the way. Can anyone provide any clues please? The webcam is enabled in the bios, but there is no light indicating the webcam is on (not sure if there should be, though). I tried this on Kubuntu 11.10 and have upgraded to 12.04 with the same results. The Fn-F6 keyboard combination doens't seem to do anything either. EDIT: I got the webcam replaced, it looks like it was a hardware problem, because it works fine now. Thanks guys. $ ls /dev/v4l/* /dev/v4l/by-id: usb-Chicony_Electronics_Co.__Ltd._Integrated_Camera-video-index0 /dev/v4l/by-path: pci-0000:00:1a.0-usb-0:1.6:1.0-video-index0 And lsusb: $ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 003: ID 147e:2016 Upek Biometric Touchchip/Touchstrip Fingerprint Sensor Bus 001 Device 004: ID 0a5c:217f Broadcom Corp. Bluetooth Controller Bus 001 Device 005: ID 17ef:480f Lenovo Integrated Webcam [R5U877] Bus 002 Device 003: ID 05c6:9204 Qualcomm, Inc. Bus 002 Device 004: ID 17ef:1003 Lenovo Integrated Smart Card Reader Here is the output from guvcview, minus lots of lines describing the available capture formats. It says "unable to start with minimum setup. Please reconnect your camera.". guvcview 1.5.3 ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2217:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib audio/pcm_bluetooth.c:1614:(audioservice_expect) BT_GET_CAPABILITIES failed : Input/output error(5) ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin supports only playback stream ALSA lib pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave Cannot connect to server socket err = No such file or directory Cannot connect to server socket jack server is not running or cannot be started video device: /dev/video0 Init. Integrated Camera (location: usb-0000:00:1a.0-1.6) { pixelformat = 'YUYV', description = 'YUV 4:2:2 (YUYV)' } { discrete: width = 640, height = 480 } Time interval between frame: 1/30, .... { discrete: width = 1600, height = 1200 } Time interval between frame: 1/15, vid:17ef pid:480f driver:uvcvideo checking format: 1196444237 libv4l2: error setting pixformat: Device or resource busy VIDIOC_S_FORMAT - Unable to set format: Device or resource busy Init v4L2 failed !! Init video returned -2 trying minimum setup ... video device: /dev/video0 Init. Integrated Camera (location: usb-0000:00:1a.0-1.6) { pixelformat = 'YUYV', description = 'YUV 4:2:2 (YUYV)' } { discrete: width = 640, height = 480 } .... vid:17ef pid:480f driver:uvcvideo checking format: 1448695129 libv4l2: error setting pixformat: Device or resource busy VIDIOC_S_FORMAT - Unable to set format: Device or resource busy Init v4L2 failed !! ERROR: Minimum Setup Failed. Exiting... VIDIOC_REQBUFS - Failed to delete buffers: Invalid argument (errno 22) cleaned allocations - 100% Closing portaudio ...OK Terminated.

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• How to I get the fingerprint reader to work on a HP ProBook 4530?

  - by RofaelEmil

  My laptop (HP ProBook 4530) has a fingerprint device but ubuntu 12.04 didn't configure it automatically. In an effort to get it to work I installed Fingerprint-GUI. It tells me "no device detected". I checked that it is enabled in the BIOS settings. I already tried the following. sudo add-apt-repository ppa:fingerprint/fingerprint-gui sudo apt-get update sudo apt-get install libbsapi policykit-1-fingerprint-gui fingerprint-gui and sudo apt-get install fprint-demo libfprint-dev libfprint0 libpam-fprint aes2501-wy I tried adding Additional drivers

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• can't complete the installation . please help

  - by user287714

  I boot from USB . But after I choose the language and connect to the wi fi . I go to the 3rd step which is the preparing to install ubuntu . and it check everything is going right ,no red x marks. and below the dialogue there is optional choices download update while installing install third-party software and here is the problem If I choose any of those or if I don't and just continue the mouse pointer is just freezing for hours and I don't access the next step I hope you got what I mean and thank you .

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• using x11 forwarding with ssh and vnc?

  - by simona

  I am working on a remote cluster via ssh with the -X option, because I need to visualize data and graphs, over a vpn protocol. Sometime due to the instability of the internet connection I lose my session. They told me I could use vnc in order to not lose my current session, so that if the internet connection drops I can reconnect and continue with my previously open session. What I do is to log in the remote cluster 'remote.cluster' and type vncserver :1 then I open another terminal on my system and I type ssh -C -NL 5901:remote.cluster:5901 [email protected] & Then I start vinagre on my system and I connect using ssh protocol. The problem is that I do not have x11 forwarding and I cannot open windows. If I try to connect using the vnc protocol with vinagre it doesn't connect, because I get something as connection timeout. What should I do?

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• MP4 files show up but won't stream to xbox 360

  - by Greg

  I set up a basic media server to stream to my 360 using uShare. Here are the instructions I used: http://linuxexpresso.wordpress.com/2011/01/02/howto-ubuntu-upnp-server-to-xbox-360/. I can stream avi files fine but I cannot stream mp4s. When I go to videos on the xbox, I can see all of the videos and folders but when I click play for an mp4 nothing happens. On my ubuntu desktop I can click on the mp4 file and it plays fine. And if I take that file, stick it on a thumb drive and plug it directly into the xbox the mp4 will play off the thumb drive. I'm lost for why it won't work through ushare. Any ideas?

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• How to share an USB device(scanner) over network (from Win to Ubuntu)?

  - by B. Roland

  Hi! I have a special thing: I want to share my scanner over the network. The scanner is connected to a Win7 machine, but I want to use it from Ubuntu 10.04... I found some methods: USB over Network - it can handle Linux Windows; and Windows Windows it has Windows (and Win CE) & Linux server, but it has only Windows client, their Linux client is coming soon - that's a drag :( - it is not free, but what uses Windows, what is free? USBip - to Linux Linux, it is free, and nice I'm looking for the other way, what can handle Win Linux thing... I prefer free things, but that thing is maybe not free...

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• Why can't I upgrade my kernel via the terminal?

  - by Alvar

  If I type sudo apt-get update && sudo apt-get upgrade I can only see that the kernel packages are kept back, and not installed. As the screenshot shows. If I then start the update manager I can install the kernel, with no problems at all. As the second screenshot shows. Why is this? The kernel is a new package and not an upgrade of an old one, this is why you can't use the command upgrade that upgrades packages. You need to use the command dist-upgrade to install new packages.

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• Looking for mass cropping software

  - by Bart van Heukelom

  I'm looking for a tool than runs on Ubuntu that can let me: Open an image in a folder which has thousands Crop and rotate it Save as a copy, automatically named (not manually), with one click. Preferably with something in the name that I can later use to filter these cropped copies in Nautilus (unless it saves in another directory, that'd be even better). Move to next image and repeat Does it exist?

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• Facing problem with "gtk.RESPONSE_OK" in the simple-player quickly tutorial

  - by sumit_gt

  I am fairly new to both quickly and Python. I am facing several problems while learning to use quickly from the following tutorial on the Ubuntu developers site: http://developer.ubuntu.com/resources/app-developer-cookbook/multimedia/creating-a-simple-media-player/ The following error I'm unable to understand: Traceback (most recent call last): File "/home/sumit/Sumit/simple-player/simple_player/SimplePlayerWindow.py", line 36, in on_openbutton_clicked if response==gtk.RESPONSE_OK: NameError: global name 'gtk' is not defined I realize that I am supposed to import something, so I tried to add import gtk which it didn't work and it gave the following error: from gtk import _gtk /usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:40: Warning: g_type_get_qdata: assertion `node != NULL' failed from gtk import _gtk I have followed every step of the tutorials so far. But there is no mention of any other imports other that "prompts" and "os". Please help. Contribution of Agmenor, facing the same problem: I also tried to replace the text if response == gtk.RESPONSE_OK: by if response == Gtk.RESPONSE_OK: (notice the capital G). This gives another error: AttributeError: 'gi.repository.Gtk' object has no attribute 'RESPONSE_OK'

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• Can't boot into windows7/ubuntu 12.04 after running boot-repair

  - by Rini

  I have installed Ubuntu 12.04 on my preinstalled windows 7 Sony vaio E series laptop following instructions here: http://www.linuxbsdos.com/2012/05/17/how-to-dual-boot-ubuntu-12-04-and-windows-7/ Everything went well and I am able to boot in to windows after complete installation of Ubuntu. Now following instructions on web I tried to add Ubuntu to my BIOS using Easy BCD (but forget to add windows 7 entry). As a result, I loose windows 7 OS and can't boot in to either OS then I successfully repaired windows 7 using recovery CD. Now my problem is that I can't reinstall Ubuntu 12.04 using Live CD it halts every time before disk partition step giving error. "ubi-partman crashed". "ubi-partman failed with exit code 141. further information may be found in /var/log/syslog. Do you want to try running this step again before continuing? If you do not, your installation may fail entirely or may be broken." and, any choice to continue will result in the same error. After that following some post solutions I ran boot-repair commands in terminal ( in Try Ubuntu mode) and got the following URL: http://paste.ubuntu.com/1206434/ Now, after restart I can't boot into either Windows or Ubuntu. Even any attempt to run Windows repair is failed and I got the message : 'No operating System found' I don't know what went wrong after running boot-repair command. Please help in solving this issue. Thanks and Regards, R Shukla

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• Building TrueCrypt on Ubuntu 13.10

  - by linuxubuntu

  With the whole NSA thing people tried to re-build identically looking binaries to the ones which truecrypt.org provides, but didn't succeed. So some think they might be compiled with back-doors which are not in the source code. - So how compile on the latest Ubuntu version (I'm using UbuntuGNOME but that shouldn't matter)? I tried some tutorials for previous Ubuntu versions but they seem not to work any-more? edit: https://madiba.encs.concordia.ca/~x_decarn/truecrypt-binaries-analysis/ Now you might think "ok, we don't need to build", but: To build he used closed-source software and there are proof-of-concepts where a compromised compiler still put backdoors into the binary: 1. source without backdoors 2. binary identically to the reference-binary 3. binary contains still backdoors

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• grub does not display activity during boot

  - by Dale E. Moore

  Prior to Ubuntu 11.04 I could configure grub so that after the menu is displayed and the system is booting detail of the boot activity appears. Now there's just a blank screen between the menu and gdm login. How do I coax Ubuntu 11.04 to display the boot activity? Dale E. Moore Oh yeah; I asked the same question here http://ubuntuforums.org/showthread.php?t=1760753 and they didn't know the answer. This question was asked here https://answers.launchpad.net/ubuntu/+source/grub2/+question/160511 too, with no new insight.

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