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• permission denied errors while starting namenode in hadoop 2.2.0

  - by Riddle

  I recently installed hadoop2.2.0 on my desktop running : Linux livingstream 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Lin I am able to format the namenode just fine , however when I start the namenode using the following command: hadoop-daemon.sh start namenode I get the following permission errors , can anyone please help me with these errors: hduser@livingstream:/usr/local/hadoop$ hadoop-daemon.sh start namenode mkdir: cannot create directory `/var/run/hadoop': Permission denied starting namenode, logging to /var/log/hadoop/hduser/hadoop-hduser-namenode- livingstream.out /usr/sbin/hadoop-daemon.sh: line 138: /var/run/hadoop/hadoop-hduser-namenode.pid: No such file or directory Can you please help me with these errors. Best Regards, Ishan

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• How to get soci.h?

  - by Ricky

  I am using Ubuntu 12.04, and I compiled a package for object recognition(rein).I got an error indicating that I don't have soci.h: Error: cannot find SOCI header file: soci.h I tried to use this command to install libsoci sudo apt-get install libsoci-core-gcc But I get the message: E: can't find package libsoci-core-gcc Does anybody know how to install this library?Thanks! P.S.For more detailed information, click here.

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• Google Desktop shortcut Ctrl + Ctrl weird behavior

  - by Leonid

  Just noticed a weird behavior of Google Desktop shortcut Ctrl + Ctrl. This shortcut is supposed to bring Google Desktop search bar to the front. If Ctrl + Ctrl is pressed the search bar appears, but once you release one of the Ctrl keys it will disappear. If you hold one Ctrl key, and press the other twice the search bar will toggle it's state. Do you have any idea how this can be fixed and what can be causing this behaviour?

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• Gnome3 shell video corruption with ATI Radeon HD 4850 on 11.10 Oneiric

  - by AndyAtTheWebists

  I have a problem similar to what's been mentioned in a few other questions, namely: Ati incompatible with Gnome-shell? Gnome Shell Glitched Top Bar Ubuntu 11.10 I have read a number of other posts here and on other forums and have tried a bunch of different solutions. The Problem The problem manifests itself only in Gnome3. I have tried KDE, Unity and KFCE and all are fine. The graphics corruption is visible only on gnome panels (see images below). Everything works fine with the free ATI drivers, but they just lack power. The problem occurs with the proprietary ones from AMD/ATI. I have installed version 11.11 and 12.1 as per the instructions on wiki.cchtml.com/index.php/Ubuntu_Oneiric_Installation_Guide. I have the same exact problem in both cases. I have tried this on clean installs of Ubuntu 11.10 Oneiric Ocelot (x64 and x86) and on Linux Mint 12 (x64) with the same results. Also, it looks like after some time of not using it, the PC just freezes. Maybe an overheat? Will look into it. Things I've Tried I have tried the following fixes: Different versions of drivers from ATI including the latest - this worked for some, not for me. Installing Oneiric specific package generated from driver, as well as the default install Removed the Unity Global menu Disabled file manager handling desktop Disabled Compiz "detect refresh rate" Sync to VBlank in Compiz on and off Please help! This is the first time in 10 years that I've finally had the chance to switch my primary desktop to Linux (stopped doing .NET dev work), and this is really getting me down. This is what the problem looks like: And:

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• will Unity have a keyboard shortcut for accessing the "Session Menu" that appears on the panel?

  - by Sam

  I noticed in screen shots of Unity the presence of the "Session Menu" indicator in the right corner of the top-panel. This menu drops down to offer Log Out, Hibernate, Restart, Shut Down, etc. I know the keyboard shortcuts are not complete yet. But are there plans to implement a shortcut for accessing this Session Menu (i.e., so users can log out, restart & shut down without having to use the mouse)? Further, will the shortcut allow navigation through the menu by just typing the first letter of the listed word (e.g., R for restart and S for shut down)?

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• Why is bzip2 needed in the kernel patch instructions?

  - by user12657

  This was from here. Extract the patch tar -xvzf /usr/src/web100-2.5.22-200810130047.tar.gz bzip2 web100/ web100-2.6.27-2.5.22-200810130047.patch Test the patch bzip2 -dc /usr/src/linux/web100/ web100-2.6.27-2.5.22-200810130047.patch.bz2 | patch -p1 --dry-run I looked at the .patch, the diff output of many files and the file .patch.bz2 after the bzip2 command which is too also the diff output of many files, they seem to be the same. My question is why is bzip2 even needed to turn the .patch into a .patch.bz2? Is it for the redirection to std output from the -dc option for the patch command? Even if it is, why not just not just use the patch command in the form something like this:patch -p1 < patchfile? I don't see why the bzip2 is done here. Also, I think the bzip2 might have an extra space in the command after web100/, right?

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• How to control / disable low level battery on bluetooth mouse

  - by Alberto

  I have a little problem with my Kesington Bluetooth Mouse on Ubuntu 12.10. Ubuntu 12.10 considers my bluetooth mouse battery as a system battery as if it was the main laptop battery (so I have two on the battery indicator, the main and the bluetooth one). When it runs low level, near to die, battery, my laptop acts as if it was the main battery and I must quickly stop bluetooth and continue on the touchpad if I want to work. Can anyone help me? Maybe I prefer to disable the battery control over the mouse, I don't care about it, I know it is fully charged, but Ubuntu always starts on 33% or less, I just want to work with it and when it will be battery-off I will recharge the batteries. Many thanks in advance. Alberto.

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• MAAS fails to Commission nodes

  - by user3644848

  I'm evaluating MaaS/Juju. I followed instructions in this link http://maas.ubuntu.com/docs1.5/install.html to setup MaaS. I'm running this in Oracle VirtualBox environment so Power options are not configured for the VMs. PXE booting VM works fine. The node shuts down itself and registers with MaaS in Declared state. Issues: a) When I Commission the VM (which is in the Declared state), first it gets IP-Config: no response after 60 secs - giving up errors. (See link below for a screenshot). b) Fails to mount the boot device and drops into initramfs prompt. I've copied logs here: https://www.dropbox.com/sh/5gy9nnonbnccufo/AAD9o4awSOtyaCCmRe5q7rBva Any help to get past this is greatly appreciated. Thanks!

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• Configure xfce4-screenshooter settings

  - by rubo77

  xfce4-screenshooter is the standard screenshot program in XFCE on Xubuntu. How can I configure the settings about which format it saves the screenshot in and in which folder? I noticed, that my settings I made in shutter also affect the settings of xfce4-screenshooter (but not all). EDIT: The man page sais, there is an -o option to open it with an external program. How can I make this default? Then I could set there an external program, that automatically compresses the screenshot to an emailable size

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• Repairing or recreating a bootloader on a multi-booting EFI GPT system

  - by Emre

  Reinstalling Ubuntu messed up my boot loader so I I tried to fix it with boot repair. It detected my OSX installation and asked about removing the "separate boot/EFI". It also said my partition was full despite the fact that it wasn't and asked me to remove stuff. I declined both and proceeded. It's been stuck at the "purge and reinstall the GRUB" stage for half an hour. Is this typical, bearing in mind I have a fast SSD and CPU? Is there a better way to re-install grub on a multi-booting UEFI system? Does my pastebin provide any insight?

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• Can't enable bluetooth because of adapter

  - by Eray

  I can't use my Bluetooth with Ubuntu 12.04 64bit . I have installed bluetooth, gnome-bluetooth and blueman packages. But i'm getting No adapter found error. eray@eray-vaio-ubuntu:~$ sudo hciconfig hci0 reset [sudo] password for eray: Can't init device hci0: Connection timed out (110) eray@eray-vaio-ubuntu:~$ rfkill list 0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: phy0: Wireless LAN Soft blocked: no Hard blocked: no 2: sony-wifi: Wireless LAN Soft blocked: no Hard blocked: no 3: sony-bluetooth: Bluetooth Soft blocked: no Hard blocked: no eray@eray-vaio-ubuntu:~$ sudo hciconfig sony-bluetooth reset Can't init device hci0: Connection timed out (110) eray@eray-vaio-ubuntu:~$ I'm remambering, i was able to use my bluetooth with Ubuntu, about 7-8 months ago. So Ubuntu supporting my bluetooth device. How can i install my bluetooth and solve this problem ? NOTE , I've read a lots of question about this. Generally there are 3 answers. Upgrade to 12.04 execute sudo hciconfig hci0 reset command unblock your device if it's blocked. But as you seen, none of them helped me. Because of this, i'm asking this question.It's not a duplicated question.

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• Can't install Ubuntu on a HP DV6 Laptop

  - by EApubs

  I just bought a HP DV6 6011tx (link) Laptop. I formated the disk through Windows and prepared for installing Ubuntu. But when I inserted the live CD, it showed the Ubuntu start screen and then everything went black. There was no cursor, everything just stayed black like the screen was switched off (but the system is running). When I tried to install from the USB, it said Live media is not found. Sometimes it also gave me a black screen like the CD. Does anyone have any idea how to fix this? Thanks!

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• Cannot activate num pad at all

  - by ubuntico

  I have two accounts on the same machine. Num pad on one account it working normally e.g. I can turn it ON/OFF via NumLock button. The num pad on the other account on this machine stopped working. I cannot turn it on and the buttons work as the NumLock is turned off. This happened without me touching any setting or all. It just happened and now I cannot turn them on no matter what I try. I tried via console command numlockx on - did not help. Tried via UI setting - did not help either. Updated the system from 11.10 to 12.04, did not help either. I really do not know what to do except I make a clean reinstallation of the system which would take 2 days away from me. It's obviously the problem in this account only, as num pad works in the other account. Anyone with a good suggestion?

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• How to move ubuntu 12.04 on another drive

  - by Maksim

  How I can move my ubuntu on another drive? I know about clonezilla but problem is that destination drive is smaller the source one. Gparted can't copy-paste partition if destination not the end last partition. I tried dpkg --selected-packages and apt-clone. First one just not install all my packages and removed existed that now I have no full unity and not my all packages. Second one just fail on configuration package. But before I did that way I copy-paste my /etc to new system. My partition table destination : gpt 1 1049kB 106MB 105MB fat32 EFI System ??????????? 2 106MB 12,1GB 12,0GB ext4 3 12,1GB 66,3GB 54,2GB ext4 source: msdos 1 1049kB 12,0GB 12,0GB primary ext4 ??????????? 2 12,0GB 492GB 480GB primary ext4 3 492GB 500GB 8107MB primary linux-swap(v1) Gpt not working with ubuntu that use grub 1.99. I don't know why but my laptop can't boot any device with uefi just black screen and ubuntu detect it on fresh install.

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• Free space in tmpfs partition not adding up

  - by Dean Herbert

  I have had my /tmp/ partition filling up recently when it should not be anywhere near full. On further investigation, I found that the partition was listing free space a lot lower than it should be. I am guessing a remount will fix this, but am very curious as to why this has happened and where this space has gone. du output: root@odoroki:/tmp# du --summarize -h 3.3M . df output: root@odoroki:/tmp# df -h /tmp Filesystem Size Used Avail Use% Mounted on tmpfs 3.9G 3.3G 653M 84% /tmp Update: after deleting some files it has happened again. du output: root@odoroki:/tmp# du -h --summarize 11M . df output: root@odoroki:/tmp# df -h /tmp Filesystem Size Used Avail Use% Mounted on tmpfs 3.9G 3.9G 0 100% /tmp I have a feeling this has started since a recent apt-get upgrade, but it still seems like strange behaviour. I did do a quick scan over lsof output and couldn't see any open/stuck file handles. Unfortunately due to the seriousness of the issue I had to reboot the server, after which usage seems to match correctly.

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• How to maintain document compatibility between LibreOffice and other office suites?

  - by CYREX

  When I save a document in LibreOffice and try to open it in Office 2007 for example, most or all of the paragraphs moved somehow. For what I found out is that the document has Widows and Orphans. How do I fix this so the document can be seen 100% accurate in Office 2007, 2003, OpenOffice and LibreOffice? What tips do askubuntu suggest about creating a compatible document between them (even though U know the non standard approach of Office 2007 in this)?

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• Is it possible to keep nm-applet running between invocations of WM startup?

  - by serverninja

  I am using nm-applet to interface with NetworkManager, running xmonad as a window manager. My X sessions (including nm-applet) are set up with a /usr/local/bin/xmonad.start script. My question is, how can I keep nm-applet running in the background as long as X is running, but not necessarily xmonad? As mentioned above, it is being started with xmonad (and dying with it when xmonad is restarted, etc). I am using gdm to manage my X sessions, and I'm running 10.10. Where's a good place to start nm-applet to suit my particular needs? I need to remove it from the control of xmonad, but don't know where to start it otherwise. Any help, tips, etc appreciated. Edit: problem seems to be with how I have integrated xmonad. I have the session script as a file in /usr/share/xsessions/xmonad.desktop with the following contents: [Desktop Entry] Encoding=UTF-8 Name=XMonad Comment=Lightweight tiling window manager Exec=/usr/local/bin/xmonad.start Icon=xmonad.png Type=XSession /usr/local/bin/xmonad.start contains the following: #!/bin/bash xrdb -merge ~/.Xresources xcompmgr -c & trayer --edge top --align right --SetDockType true --SetPartialStrut true --expand true --width 8 --heighttype pixel --height 18 --transparent true --alpha 0 --tint 0x000000 & gnome-settings-daemon & gnome-screensaver & if [ -x /usr/bin/nm-applet ] ; then nm-applet --sm-disable & fi /usr/bin/urxvtd -q -o -f & eval `ssh-agent` & if [ -x /usr/bin/gnome-power-manager ] ; then sleep 1 gnome-power-manager & fi /usr/bin/gnome-volume-control-applet & exec xmonad The question is how do I integrate xmonad, gdm, X, etc in such a manner to replicate the behavior I currently have except with nm-applet (and possibly other programs) running whether or not xmonad is?

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• Environmental Variable for current domain

  - by Krzysztof Goszka

  I'm using Ubuntu 12.04 LTS Desktop edition I want to use environmental variable for currently joined domain just like i use $USER to bring current user. From what i read there are few variables for that but none seem to work for me. I also cannot see those variables as active when i type env command. I would appreciate a solution on how to enable that variable or how to make my own variable by pulling current domain name from the system somehow.

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• How do I fix "Grub Rescue"? Uninstallation?

  - by Julien Mackenzie

  I am currently dual-booting windows 7 and Ubuntu. I am about to sell my computer so I was following a tutorial on how to uninstall Ubuntu. I had deleted my partitions like the tutorial said and now I get this: error : no such partition grub rescue_ I am now looking for help on Getting out of this "grub rescue" Uninstalling Ubuntu and/or factory reset Notes -Newbie - No windows disks -I have spare CDs

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• Grub Rescue Unknown Filesystem Error. Grub Corrupted or Filesystem?

  - by nightcrawler

  Now it has happened twice & have been pulling my hairs now... I have installed xubuntu on my external hardisk & have been using it for about 3 months. It has three partitions, one of 500 mb mounted at /boot, 2nd one of 48gb mounted at / & the rest (out of 160gb) is ntfs partition....used as normal external storage. The last storage supposedly acts as a buffer b/w Linux distributions & Win platform, buffer in the sense that it provides a universal channel for data transfers. I have constantly used this external hardisk for data transfers b/w win7 laptop & xubuntu (on this external hd) without any hassle. However, on of my desktops where I have ubuntu I (for the first time) attached this external drive which let me do data transfers where all three partitions properly mounted....but then nasty thing occurred the same that occurred before. I (as usual) tried booting via this external hd (one having xubuntu, one having being formerly used under Ubuntu) I got error Now I am totally devastated because similar thing happened ~6months before when I had fedora 17 in my external hd (instead of xubuntu) & after it was used under ubuntu the same happened...i didn't reported it because I already had planned towards debian instead of rpm! The mystery is that as long as I don't attach this external hd under ubuntu the data never** corrupts whereas under win xp/7 I can use it as a normal usb storage of coarse linux partitions aren’t available under win platforms... **From corrupts I mean hd fails to boot with the error mentioned however cant say whether data within remains untouched? It seems that my grub & or MBR is corrupted. Please sir guide me to solve this issue also why I cant attach & use linux external hds under linux platform Disk /dev/sdc: 160.0 GB, 160041884672 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581806 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0004e7d0 Device Boot Start End Blocks Id System /dev/sdc1 * 2048 976895 487424 83 Linux /dev/sdc2 978942 96874495 47947777 5 Extended /dev/sdc3 96874496 312575999 107850752 7 HPFS/NTFS/exFAT /dev/sdc5 978944 94726143 46873600 83 Linux /dev/sdc6 94728192 96874495 1073152 82 Linux swap / Solaris I can recall for sure that have seen a thread here when a similar problem occurred & in response someone gave solution of how to mount (now invisible) partitions & recover important data in them. I have misplaced that URL so if any can guide me thither because my important documents resides in / partition What I already have done: Without success I have tried this & related solutions What I plan to do: I believe that filesystem has corrupted & would you recommend solution like this provided I cant recall whether my /boot (500mb) partition was ext4 or ext2 though I am sure that my / (48gb) partition was ext4 UPDATE 1 Attached my external hd under Ubuntu ran followinf command as root grub-install /dev/sdc where /dev/sdc was my external hd containing corrupted xubuntu....it reported all done! I re-ran fdisk -l but to my disappointment it reported Disk /dev/sdc: 160.0 GB, 160041884672 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581806 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x1b6b9167 Disk /dev/sdc doesn't contain a valid partition table ...& now I can't even access its ntfs partition (former /dev/sdc3) please help? UPDATE 2 TestDisk (by cgsecurity) failed at founding any partition table :( TestDisk 6.13, Data Recovery Utility, November 2011 Christophe GRENIER <[email protected]> http://www.cgsecurity.org Disk /dev/sdc - 160 GB / 149 GiB - CHS 19457 255 63 Partition Start End Size in sectors

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• Burg Custom Icons work only with specific themes

  - by el10780

  I have made a custom icon for burg loader for my Lenovo Recovery Partition.I have made 3 icons : large_qdrive.png (128 X 128 pixels) small_qdrive.png (24 X 24 pixels) grey_qdrive.png (128 x 128 pixels) The .png icons that I created I made them using gimp from a qdrive.ico file that I found in the Lenovo Recovery Partition. I transferred the icons to the /boot/burg/themes/icons folder and I added to the class list of the grey,large,small and the hover files the following lines : -qdrive { image = "$$/large_qdrive.png" } in the large file -qdrive { image = "$$/small_qdrive.png" } in the small file -qdrive { image = "$$/grey_qdrive.png" } in the grey file -qdrive { image = "$$/grey_qdrive.png:$$/large_qdrive.png" } in the hover file I ran sudo update-burg and after that I modified the following line in the burg.cfg file : menuentry "Windows 7 (loader) (on /dev/sda2)" --class windows --class os { to menuentry "Windows 7 (loader) (on /dev/sda2)" --class qdrive --class os { and I also tried to change the title for the Lenovo Recovery Partition,so I tried this as well: menuentry "Lenovo Recovery Partition (on /dev/sda2)" --class qdrive --class os { None of this tries enforced actually burg loader to use the custom icon that I made and I can't figure out why. I have to mention also that there are a few themes that I have installed in burg which actually are able to use the small_qdrive.png icon that I made,but all the others which use either the large_qdrive.png or the grey_qdrive.png weren't able to use the custom icons. I have double checked for typos in all the files that I have created or I modified,so I am pretty sure that I haven't misspelled anything. I have checked also the title of the custom icons that I made and neither of them have a typo. I have looked also if there are any other folder that the themes might use to retrieve the icons,but it seems that all of them except for **Fortune** theme,which I downloaded from OMG!UBUNTU,use the icons folder which is located in /boot/burg/themes/icons I tried to add the custom icons to the icons folder of the theme **Fortune**,but still nothing happened.

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• Getting touchpad to work in desktop ubuntu

  - by kamziro

  I bought a small touchpad to stick on top of the keyboard, and it works fine on the windows computer, but not on my ubuntu desktop. I mean, when I do "xinput list" it shows the following: ? Virtual core pointer id=2 [master pointer (3)] ? ? Virtual core XTEST pointer id=4 [slave pointer (2)] ? ? PIXART USB OPTICAL MOUSE id=8 [slave pointer (2)] ? ? Logitech USB-PS/2 Optical Mouse id=11 [slave pointer (2)] ? ? Microsoft Wired Keyboard 600 id=13 [slave pointer (2)] ? ? Macintosh mouse button emulation id=14 [slave pointer (2)] ? ? Cirque Corporation 9925 AG Touchpad id=15 [slave pointer (2)] ? Virtual core keyboard id=3 [master keyboard (2)] ? Virtual core XTEST keyboard id=5 [slave keyboard (3)] ? Power Button id=6 [slave keyboard (3)] ? Power Button id=7 [slave keyboard (3)] ? No brand SP04-A1 id=9 [slave keyboard (3)] ? Elite Silicon USB Audio Device id=10 [slave keyboard (3)] ? Microsoft Wired Keyboard 600 id=12 [slave keyboard (3)] The Cirque Corporation touchpad (I'm assuming that's the component name) is the touchpad. Is there anything I'm missing?

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• Brightness controls doesn't work on a MacBook Pro 5.5

  - by Jeff Labonte

  I recently installed Ubuntu on my MacBook pro 5.5 (mid 2009). I have a problem with the brightness control. The thing is, when I try to reduce the brightness of my display which would help my battery life dramaticlly is doesnt work. I tried to use the system preference but no succes. I tried to look of it changes something if disconnect the computer from the charge I the screen will dimm but once against I failed. I tried many things such as pommed or Many other little things that I have had read on forums.

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• How to set PyGtk toolbuttons label color?

  - by Voidcode

  I am just beginning learning Quickly and PyGtk, after see this info-video on Ubuntu-develperment. As in the video I am adding a toolbar to my glade-file, then some buttons. To style the toolbar for ubuntu I do: self.toolbar = self.builder.get_object("toolbar") context = self.toolbar.get_style_context() context.add_class(Gtk.STYLE_CLASS_PRIMARY_TOOLBAR) The style works, But the label-text-color for the buttons look like this: How can I changes the text color?

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• What are the common pitfalls that would stop Authorised Key SSH access, and how do I find and correct for them?

  - by Ashimema

  EDIT: This question was reworked to make it more useful to the community and less specific to me. Questions seem to come up reasonably often regarding ssh and problems with authorised keys access, but very few seem to have a clear answer anywhere; Server keeps asking for password after I've copied my SSH Public Key to authorized_keys ssh not accepting public key how do I use ssh with key access in 11.10 passwordless ssh not working So, In the communities opinion, what is the tried and tested method for getting to the bottom of such problems?

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