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• Error when restarting computer after successful Ubuntu 12.10 installation

  - by Amy

  I was having a lot of sudden issues with my computer (slow on start up progressing quickly to not being able to start ...even in safe mode). Worked on several different things. Finally tried formatting hd and then installing Windows 7. Got errors so I said screw it and tried Ubuntu. Downloaded it (via my laptop), burned on DVD, and tried a disc boot on my desktop. Went through the whole installation, said it was successful and progressed to the restart. It stopped at a screen with an error (0x1b5a6) from 'hd0' I don't remember the error code verbatim. Now when I try restarting it I get to the initial page, hit 'enter' on Ubuntu..and it just sits at a blank screen. Eventually it runs through this screen with a bunch of code and then just sits there. I can't type anything and enter does nothing. Some things on the screen are: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block (0,0) I don't know what else to do... Restarting does not work. I have been working on fixing my computer for almost 2 days straight...

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• Command-line to list DNS servers

  - by Anurag Uniyal

  Is there a command to list dns servers? I tried $ cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 127.0.0.1 $ cat /etc/network/interfaces # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback But it doesn't list any servers, if I go to "Network GUI Tool", in Wireless section it lists "DNS 192.168.1.1 8.8.8.8 8.8.4.4" Can I get same information from command line? I am using Ubuntu 12.04 LTS

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• Is Btrfs in Maverick considered stable?

  - by Hamish Downer

  I'm upgrading my laptop to Maverick (10.10) and I noticed btrfs is an option for the filesystem. I read a while ago that the Ubuntu team weren't sure if it was going to be stable for Maverick. Does anyone know (with references) if it was approved for stable use? Any other pros and cons? For the moment I've made my root partition ext4 and my home partition btrfs, but I could reinstall. My laptop is a secondary computer.

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• Accessibility bus warning when opening files in Eclipse from command line (Ubuntu 13.10)

  - by Reese

  Similar to closed issue Gnome Menu Broken? When opening a file from the command line for edits in Eclipse , I get this warning: ** (eclipse:nnnn): WARNING **: Couldn't register with accessibility bus: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. The 4-digit number at (eclipse:nnnn) changes each time I issue an 'eclipse some/file.ext' command. The file opens but the warning is an annoyance that shouldn't be happening, it may be indicative of some other problem. Updated Ubuntu 13.10 64-bit, updated Eclipse Luna.

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• Can I add myself to group `root'?

  - by kev

  $ id uid=1000(kev) gid=1000(kev) groups=1000(kev),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),109(lpadmin),124(sambashare) $ ls -l /etc/sudoers -r--r----- 1 root root 723 Jan 31 2012 /etc/sudoers $ sudo adduser kev root Adding user `kev' to group `root' ... Adding user kev to group root Done. $ cat /etc/sudoers cat: /etc/sudoers: Permission denied After adding myself(kev) to group root, I still cannot read /etc/sudoers. I don't know why. Thanks for your help.

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• How to opendns with dynamic ip

  - by Joshua Robison

  OpenDNS is almost completely useless with a dynamic ip and most people have dynamic ip addresses. There isn't even a decent client for Linux to update your IP. There is a script you can install but it only seems to update on startup and all my child needs to do is unplug and replug the cable from the wall or router and a new ip is created totally killing the opendns service . I'm not even sure the Mac or windows ip update clients can protect from such a simple maneuver . How can I get my ip address to constantly update with opendns, is my question.

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• How do I fix skype on x86 11.10 desktop which garbles audio both ways in connection with a Windows user?

  - by keepitsimpleengineer

  Strange phenomena ? I have a friend I connect with and talk to regularly occasionally using video. He runs Windows XP with a Logitech webcam and mike. I run Windows XP with a Logitech webcam and mike, and a laptop with built in webcam and mike running both 11.10 x86 Desktop and Windows XP Home. We gab and ogle fine with these. But when I installed 11.10 x86 with GNOME 3.2 dual boot on the same machine with the Logitech webcam and mike, whenever I try to ogle and gab the audio is total garbled. When I make a test call to skype or call somebody on a landline or cell - there's no problem. In summary, everything works except for when running 11.10 x86 GNOME 3.2 connected to his Windows XP. Stumped on this end.

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• Update Manager is in Launcher and Alt-Tab list, but I can't switch to it

  - by Jeff

  The Update Manager recently started itself and found two updates. I can tell by the icon in the launcher. The icon has a (2) on it and a little white arrow saying the application is running. I can also see the update-manager process in a 'ps -A' list. Alt-Tab also shows the Update Manager. The problem is I can't get Update Manager to show up. If I click on the icon or Alt-Tab to it, nothing happens. I've never had any issues starting it manually, but when it starts on it's own after finding an update, I can't switch to it. What can I try to make this work better?

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• Can't find openjdk's jre? No Java plugin in Chrome web browser.

  - by Patryk

  I have recently installed openjdk just to try out writing some java application $ dpkg -l | grep jdk ii openjdk-7-jdk 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Development Kit (JDK) ii openjdk-7-jre 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Java runtime, using Hotspot JIT ii openjdk-7-jre-headless 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Java runtime, using Hotspot JIT (headless) ii openjdk-7-jre-lib 7u7-2.3.2a-0ubuntu0.12.04.1 OpenJDK Java runtime (architecture independent libraries) That's what I have on my system. Although I have all this installed when in Chrome I go to a website which needs jre it can't find it. How can I fix it ?

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• Alt-Tab looses focus and have to hit Alt-Grave Accent to get focus

  - by John Hamill

  Alt-Tab looses focus and have to hit Alt-Grave Accent to get focus I have ubuntu 12.4 with Unity window manager. I have a gvim window and a firefox window open. I hit Alt-Tab to switch between the two. Sometimes the gvim window doesn't have focus and I have to hit Alt-GraveAccent (Alt-`) to get the gvim window to have focus (ie: have the cursor a solid white square instead of a outline of a square) I do this to move between firefox where I highlight some text and do a copy, then Alt-Tab to gvim and do a paste. Sometimes the focus isn't in gvim and the paste doesn't work. I then have to do an Alt-graveAccent to get the focus into gvim or click the gvim window. These extra steps slow my process down and it makes it difficult to get into a smooth rythum. I saw this: ALT+TAB loses focus Maybe the Alt-GraveAccent may help someone. It's a unity bug: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1035628 Your best bet is to wait until an update comes through fixing it.

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• Can't upgrade Firefox

  - by Deb Vorndran

  When I first got Ubuntu and got used to it, I decided to install lots of packages, and I overwhelmed the update manager. I had to interrupt it, because the download time was crazy long. That was 2 years ago. I haven't been able to upgrade anything since then. But now, some things I need will not work in my 2-year-old version of Firefox. I want to cancel all of the package installations that I started, and was not able to finish, and I need to upgrade Firefox. What should I do?

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• What is the version numbering logic for open source developers managing software releases?

  - by Stephen Myall

  I guess this is more of a general question that I cant find the the answer to anywhere. What is the version numbering logic for open source developers managing software releases and is there any governance or guidance I can read up on. The origins of this question comes from me reviewing and researching software on countless websites that I would like to use on my Ubuntu OS. Through experience, I am learning some sites are much better than others explaining if a release is a stable, experimental or maintenance release but these explanations are not consistent with any version numbering logic I am familiar with.

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• Thinkpad x201 Tablet - Touch doesn't work correctly under 12.04

  - by Joachim

  running 12.04 on my Thinkpad X201t. On the login screen the touch works fine, the mouse cursor appears where I touch the screen. After I logged in, it doesn't work anymore. If I touch the display, the cursor stays on the point where it was before, it doesn't jump to the touchpoint. I can move it, yes, but its chaotic. With the pen it works fine, but without the touch-function it's not enought for real tablet usage. So, would be glad if touch-function can be fixed. I'm very new to Linux/Ubuntu, so don't know where I can start. Haven't found anything in the system settings & Compiz so far, also no luck in google etc. Would be glad for help ;-). Of course I could go back to 11.04... but I would prefer to stay with the new system. Best, Joachim

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• MaaS - juju boostrap and ssh not found

  - by user84471

  today I want to juju boostrap so I do ssh-keygen and get this Generating public/private rsa key pair. Enter file in which to save the key (/home/hsf/.ssh/id_rsa): key Enter passphrase (empty for no passphrase): ubuntu Enter same passphrase again: ubuntu Your identification has been saved in key. Your public key has been saved in key.pub. The key fingerprint is: 7e:d2:df:66:f5:2f:92:02:ad:10:67:b7:10:cd:33:03 hsf@ubuntu-server The key's randomart image is: +--[ RSA 2048]----+ | E+ | | . * | | . + | | . + . | | +S+ . | | ....o .| | .ooo . ..| | .o..o.+ .| | ..+..o| +-----------------+ Then I copy my public key in key.pub is like this: ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC89zkec0YhwYuUmjB6oxmLGmzH2nCvJMF0mjigodxN$ To the maas dashboard : press "Add SSH key" and copy and add key. So now I want to bootstrap and I get this: 2012-08-27 13:02:02,923 INFO Bootstrapping environment 'maas' (origin: distro type: maas)... 2012-08-27 13:02:05,935 ERROR Failed to launch machine /MAAS/api/1.0/nodes/node-3c4b1752-f031-11e1-bd44-001185e67955/; attempting to release. Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/juju/providers/maas/launch.py", line 44, in start_machine cloud_init = self._create_cloud_init(machine_id, zookeepers) File "/usr/lib/python2.7/dist-packages/juju/providers/common/launch.py", line 95, in _create_cloud_init cloud_init.add_ssh_key(get_user_authorized_keys(config)) File "/usr/lib/python2.7/dist-packages/juju/providers/common/utils.py", line 84, in get_user_authorized_keys raise LookupError("SSH authorized/public key not found.") LookupError: SSH authorized/public key not found. SSH authorized/public key not found. 2012-08-27 13:02:11,969 ERROR SSH authorized/public key not found. I don't know what to do. Please help.

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• Eclipse does not want to use openjdk-7

  - by umop aplsdn

  I am on a new installation of Ubuntu. I install all the updates, and then restart. I then install openjdk-7-jdk from apt, then I restart. Then I install eclipse-platform, eclipse-jdt, and eclipse-cdt. I then launch Eclipse. When I check the build path for my imported projects it decided that during the eclipse-platform installation to install openjdk-6. Okay, cool. The problem is that I can't use openjdk-7 AT ALL. There is no option to use it in the build path library manager. How can I change it so it uses openjdk-7? I tried reinstalling it already, didn't do anything. Just told me it was already installed. EDIT: Failed at the title, fixed.

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• sound card is not working

  - by ralph crowhurst

  I've installed Ubuntu 11.4 on my dell xps m2010 using wubi. Then booted up and could not connect to the Internet using 3three huawei e122 usb mobile broadband (I would like this to work also). I've managed to connect through a wireless network, I went to my favorite sites and was told I needed to install adobe flash player.This what I did players run and picture is good. But there is no sound! Then I've tried to play songs in Banshee, but no sound. I have checked everything in sound preferences including test speaker, there is sound. I have sigmatel sound card. Thanks

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• How to configure Ubuntu with Standard TV?

  - by Ryan Wyan

  Ubuntu 8 version nVidia card with driver 96.43.10-0ubuntu1 /etc/X11/xorg.conf Section "Screen" Identifier "Television Screen" Device "Television Device" Monitor "Television" DefaultDepth 24 Option "TVOutFormat" "COMPONENT" Option "TVStandard" "PAL-B" SubSection "Display" Depth 24 Modes "640x480@40" EndSubSection EndSection Section "Module" Load "glx" Disable "dri2" EndSection Section "Device" Identifier "Default Device" Driver "nvidia" EndSection Television is Sharp FlatX Standard TV, its specifications can be found at http://www.amazon.com/Sharp-X-Flat-32F630-Flat-Screen-32/dp/B0000AKVAV There were other screen sections which I removed. The TV shows just distorted image with just particles of different colors. I tried different resolution but did not figure out. Kindly help me how to setup TV with Ubuntu. I am newbie to this and not aware of subtle technicalities. Thanks indeed.

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• What package creates /usr/lib/jvm/default-java?

  - by François Beausoleil

  I'm trying to setup Jenkins on 11.10 using only Ubuntu-provided packages. After apt-get install jenkins, Jenkins won't start. I traced it to an absent /usr/lib/jvm/default-java/bin/java. Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Description +++-===============================-=======================================-============================================================================== ii jenkins 1.409.1-0ubuntu4.2 Continuous Integration and Job Scheduling Server ii openjdk-6-jre 6b24-1.11.3-1ubuntu0.11.10.1 OpenJDK Java runtime, using Hotspot JIT # update-alternative --config java There is only one alternative in link group java: /usr/lib/jvm/java-6-openjdk/jre/bin/java Nothing to configure. What package creates /usr/lib/jvm/default-java ?

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• New 12.04.1 ISO filename

  - by Ubuntu user X

  I use a program called YUMI from pendrivelinux.com to load all my Linux distros from a USB thumbdrive. They just updated their installer to support the newest 12.04.1 released a couple days ago. It's looking for a ISO name of ubuntu-12.04.*dvd-i386.iso but the file I downloaded from the Ubuntu homepage is named ubuntu-12.04.1-desktop-i386.iso. Can I simply change the name of my ISO, or is there a difference in the ISO?

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• Installation automation

  - by Denis Gorbachev

  Use case: When I install Ubuntu on another computer, I need to: install all the packages that I use; make some config changes; svn checkout some projects; git clone some projects; setup .ssh/config; download a custom Eclipse build; download some additional Eclipse plugins; make many other tweaks. So, I want to run a script, like sudo install-everything-needed, that would execute these predefined actions. Is there any package that provides the backbone for such system?

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• Lubuntu upgrade to 13.04 killed sound with ALSA. How to troubleshoot?

  - by Sven

  After upgrading to 13.04 from 12.10 Lubuntu lost audio playback after unplugging usb soundcard (Polycom) and plugging it back in. Volume control was gray and leading to pulseaudio mixer (not installed) so I uninstalled the pulseaudio package. I also removed and reinstalled the alsa-base package. After restart I have the alsamixer back everything seemingly as usual(volume 100%, unmute) but every sound program gets me errors no matter what device I select. aplay -L: null Discard all samples (playback) or generate zero samples (capture) pulse PulseAudio Sound Server default:CARD=NVidia HDA NVidia, ALC662 rev1 Analog Default Audio Device sysdefault:CARD=NVidia HDA NVidia, ALC662 rev1 Analog Default Audio Device front:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Analog Front speakers surround40:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Digital IEC958 (S/PDIF) Digital Audio Output hdmi:CARD=NVidia,DEV=0 HDA NVidia, HDMI 0 HDMI Audio Output dmix:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Analog Direct sample mixing device dmix:CARD=NVidia,DEV=1 HDA NVidia, ALC662 rev1 Digital Direct sample mixing device dmix:CARD=NVidia,DEV=3 HDA NVidia, HDMI 0 Direct sample mixing device dsnoop:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Analog Direct sample snooping device dsnoop:CARD=NVidia,DEV=1 HDA NVidia, ALC662 rev1 Digital Direct sample snooping device dsnoop:CARD=NVidia,DEV=3 HDA NVidia, HDMI 0 Direct sample snooping device hw:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Analog Direct hardware device without any conversions hw:CARD=NVidia,DEV=1 HDA NVidia, ALC662 rev1 Digital Direct hardware device without any conversions hw:CARD=NVidia,DEV=3 HDA NVidia, HDMI 0 Direct hardware device without any conversions plughw:CARD=NVidia,DEV=0 HDA NVidia, ALC662 rev1 Analog Hardware device with all software conversions plughw:CARD=NVidia,DEV=1 HDA NVidia, ALC662 rev1 Digital Hardware device with all software conversions plughw:CARD=NVidia,DEV=3 HDA NVidia, HDMI 0 Hardware device with all software conversions default:CARD=Communicator Default Audio Device sysdefault:CARD=Communicator Default Audio Device front:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio Front speakers surround40:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio 4.0 Surround output to Front and Rear speakers surround41:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio IEC958 (S/PDIF) Digital Audio Output dmix:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio Direct sample mixing device dsnoop:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio Direct sample snooping device hw:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio Direct hardware device without any conversions plughw:CARD=Communicator,DEV=0 Polycom Communicator, USB Audio Hardware device with all software conversions etc/asound.conf: defaults.ctl.card 1 defaults.pcm.card 1 defaults.pcm.device 1 Following gets same result with both devices. aplay -vv -D front:CARD=NVidia,DEV=0 "Release the Pressure.wav": Playing WAVE 'Release the Pressure.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Mono aplay: set_params:1087: Channels count non available Guayadeque mp3 playback: AL lib: alsa_open_playback: Could not open playback device 'default': No such file or directory 21:32:14: Error: Gstreamer error 'Configured audiosink playbackbin is not working.' Audacious: ALSA error: snd_mixer_attach failed: No such file or directory. ALSA error: snd_pcm_open failed: No such device. So How do I fix my audio? UPDATE: I removed the usb soundcard and got rid of all alsa config. Everything is working as before the install but it sure feels fragile.

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• How do I resolve "No JSON object could be decoded" on mythbuntu live CD?

  - by Neil

  I have been running a MythTV frontend on my laptop for some time against a MythTV backend installed in Linux Mint 12 on another computer, and everything works fine. Now, I'm trying out the Mythbuntu Live CD (12.04.1 32-bit) on the laptop, to turn it into a dedicated front end. It's connecting to the network just fine, and I can see my server. When I click on the frontend icon on the desktop, it asks me for the security code, which I've verified against mythtv-setup on the server. However, when I test that code, it shows the error message "No JSON object could be decoded". I've looked in the control center to see if there's something else I should be setting up. The message above implies to me that it can't find the server, but I can find no place in the control center to tell it where to find my myth backend, which I find a little odd. Does the live CD not work against a backend server on another machine?

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• explain how to navigate the directory in the terminal & translate directory info

  - by user74713

  I am following the directions @ enter link description here; however, I am still confused about a few things. I'm new & need a bit extra direction so stick with me! ;-) The following is the script from my terminal: christy@ubuntu:~$ ls Desktop examples.desktop install-tl-unx.tar.gz Pictures Templates Documents install-pkgs.log libnautilus-gksu.so Projects Videos Documents install-pkgs.log libnautilus-gksu.so Projects Videos christy@ubuntu:~$ cd/ bash: cd/: No such file or directory How do I tell what is in which directory & how do I navigate the directory. I know I must be leaving out something simple. Thanx! Chris

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• Installation of Tex Live via the terminal 12.04

  - by user74713

  I need to install upstream version of TeX Live for 12.04 to edit the manual for Ubuntu. I am having a difficult time installing it per the directions @ http://ubuntu-manual.org/getinvolved/editors#install-texlive. TeX Live documents are on my computer, but I am not able to run the install. No TeX Live program found on my computer. Any help is greatly appreciated! ~Thanx!~ Hello, my name is Chris. I am a student pursuing a career in technical writing. I would like to assist the Ubuntu community while gaining experience & building my resume. Below I have listed the prior attempts & links to view the posts of each attempt: Backports I have tried using the official backports of the latest (2012) TeX-Live via their PPA. Please refer to link below for the particulars. How do I install the latest 2012 TeX Live on 12.04? Latex I've also tried running Latex as suggested. Please refer to link below for the particulars. http://ubuntuforums.org/showthread.php?t=2019051 PPA Causing Issue?? or something else I came across a post concerning the ability to install programs via the terminal and am wondering if it may be my problem??? Please refer to link below for the particulars. PPA - TeX Live Cannot install anything through Terminal - apt-get -f install

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• How to disable the alt-hotkey behavior on gnome terminal?

  - by farleyknight

  This is not just gnome terminal, but pretty much all gnome windows: When you hold the "alt" key, you can press the first letter of one of the menu items. This will let you scroll that menu without clicking on it directly. This is okay on any other window, like say Firefox, but on gnome terminal, it steals the keys I use for emacs!! There is very little chance of me learning a new set key combinations if I can avoid. If I can't isolate this just to gnome terminal, I'm fine with that.

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