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• Suggest methods for testing changes to "pam.d/common-*" files

  - by Jamie

  How do I test the changes to the pam.d configuration files: Do I need to restart the PAM service to test the changes? Should I go through every service listed in the /etc/pam.d/ directory? I'm about to make changes to the pam.d/common-* files in an effort to put an Ubuntu box into an active directory controlled network. I'm just learning what to do, so I'm preparing the configuration in a VM, which I plan to deploy in metal in the coming week. It is a clean install of Ubuntu 10.04 Beta 2 server, so other than SSH daemon, all other services are stock.

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• How to mount /tmp in /mnt on EC2?

  - by Claudio Poli

  I was wondering what is the best way to mount the /tmp endpoint in the ephemeral storage /mnt on an EC2 instance and give the ubuntu user default write permissions. Some suggest editing /etc/rc.local this way: mkdir -p /mnt/tmp && mount --bind -o nobootwait /mnt/tmp /tmp However that doesn't work for me (files differs). I tried editing the default fstab entry: /dev/xvdb /mnt auto defaults,nobootwait,comment=cloudconfig 0 2 replacing /mnt with /tmp and and giving it a umask=0777, however it doesn't work because of cloudconfig. I'm using Ubuntu 12.04. Thanks.

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• Horde complains that Imp is not running

  - by Eric J.

  I'm a mostly-Windows guy tasked with setting up email on an Ubuntu 12.04 instance at AWS and hit the following error: When I browse to Horde, after entering my administrative credentials, I get the error message: A fatal error has occurred imp is not activated. Details have been logged for the administrator. I am following the following, quite detailed guide http://www.exratione.com/2012/05/a-mailserver-on-ubuntu-1204-postfix-dovecot-mysql/ This is happening at Step 20, at the text Now fire up you web browser and navigate to your server at http://mail.example.com/ to verify that you can log in as the configured administrative mail user. (of course I used my actual domain). Questions Where is Horde logging the "details"? Any thoughts on why this might happen? I found Google hits suggesting that php5-mcrypt might be missing, but I verified it is installed and up-to-date in my case.

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• Installing PHP Imagick with libmagickcore4

  - by Ali

  I have ImageMagick (version 6.6.9-7) on Ubuntu 12.04, which has libmagickcore4. When I tried to install PHP imagick, I received the following error: The following packages have unmet dependencies: php5-imagick : Depends: libmagickcore3 (>= 8:6.6.0.4) but it is not installable Depends: libmagickwand3 (>= 8:6.6.0.4) but it is not installable E: Unable to correct problems, you have held broken packages. Apparently, the problem is that php5-imagick is based on libmagickcore3 but a newer verion has been installed on my Ubuntu. Is there a way to instruct PHP imagick to use libmagickcore4?

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• /var/lib/ureadahead/debugfs using up disk space

  - by Keyo

  Running Ubuntu 10.04 and nearly all my drive space is gone. # df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/ubuntu-root 7.3G 6.6G 327M 96% / none 245M 240K 244M 1% /dev none 249M 0 249M 0% /dev/shm none 249M 340K 249M 1% /var/run none 249M 0 249M 0% /var/lock none 249M 0 249M 0% /lib/init/rw /dev/sda1 228M 34M 183M 16% /boot Of course it's not mounted. I read that chmod 0 /sbin/debugfs could fix the problem, but now it just won't mount despite changing the permission to 777. This is a VM running on VirtualBox. I have done a file system check which ran fine. What is this directory and how can I remove it from the system?

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• Crazy VM clock drift

  - by SimonJGreen

  This is taken from an Ubuntu 10.10 VM running on ESX5: Nov 3 21:58:50 server1 ntpd[21169]: adjusting local clock by 31.187370s Nov 3 22:02:36 server1 ntpd[21169]: adjusting local clock by 31.159808s Nov 3 22:05:18 server1 ntpd[21169]: adjusting local clock by 31.067579s Nov 3 22:07:59 server1 ntpd[21169]: adjusting local clock by 30.952187s Nov 3 22:11:38 server1 ntpd[21169]: adjusting local clock by 30.890147s According to the VMWare KB no kernel tweaks should be needed for Ubuntu 10.10 to maintain time to their standards. What's especially odd is the drift seems fairly consistent. Any help appreciated on this one!

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• Mount /tmp in /mnt on EC2

  - by Claudio Poli

  I was wondering what is the best way to mount the /tmp endpoint in the ephemeral storage /mnt on an EC2 instance and give the ubuntu user default write permissions. Some suggest editing /etc/rc.local this way: mkdir -p /mnt/tmp && mount --bind -o nobootwait /mnt/tmp /tmp However that doesn't work for me. I tried editing the fstab: /dev/xvdb /tmp auto defaults,nobootwait,comment=cloudconfig 0 2 and giving it a umask=0777, however it doesn't work because of cloudconfig. I'm using Ubuntu 12.04.

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• store image installation error in UEC

  - by selvakumar

  to my college final year project we planned to setup the private cloud on the two machines. I recently installed Ubuntu Enterprise Cloud (UEC) on two of my machines . I was trying to install the store image through WebUI. I was able to download Ubuntu 10.04 - (i386) image but while installing, it's giving me following error: - Command 'euca-upload-bundle' returned status code 1: Checking bucket: image-store-1296600766 Traceback (most recent call last): File "/usr/bin/euca-upload-bundle", line 231, in main() File "/usr/bin/euca-upload-bundle", line 214, in main bucket_instance = ensure_bucket(conn, bucket, canned_acl) File "/usr/bin/euca-upload-bundle", line 87, in ensure_bucket bucket_instance = connection.get_bucket(bucket) File "/usr/lib/pymodules/python2.6/boto/s3/connection.py", line 275, in get_bucket rs = bucket.get_all_keys(headers, maxkeys=0) File "/usr/lib/pymodules/python2.6/boto/s3/bucket.py", line 204, in get_all_keys headers=headers, query_args=s) File "/usr/lib/pymodules/python2.6/boto/s3/connection.py", line 342, in make_request data, host, auth_path, sender) File "/usr/lib/pymodules/python2.6/boto/connection.py", line 459, in make_request return self._mexe(method, path, data, headers, host, sender) File "/usr/lib/pymodules/python2.6/boto/connection.py", line 437, in _mexe raise e socket.error: [Errno 110] Connection timed out could anyone please help me?

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• After closing the ssh terminal, the thin server is down

  - by Keating Wang

  I have a rails project run on the thin server(1.3.1) on a ubuntu server. I ssh to the server and start thin with command 'thin start -C config/thin.yml', following the thin.yml, port: 3000 log: log/thin.log timeout: 30 chdir: /home/byht/56platform/dev/tracker environment: production servers: 1 daemonize: true After thin starts successfully, I visit the project and it works well. Then, I close the terminal, I can also visit the pages that have been visited, but when I visit the pages that not been visited before closing ssh terminal, a "500" error appears on the page. I didn't find the error messages in the log file. I have tried start thin with nohup and sudo, but they are useless. I sign in the ubuntu server locally, then the problem disappears. But I need sign in the server to stat thin with ssh when I'm home.

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• SVN help:: svn: invalid option: --trust-server-cert

  - by JP19

  Hi, I want to bypass certificate checking. I tried using svn --trust-server-cert update, but I get an error, svn: invalid option: --trust-server-cert. I am on ubuntu and the svn version is 1.5.4. Is there any other way to bypass the certificate? Ubuntu won't automatically update my svn to 1.6.xx, which I think has this option. (In any case, I have heard that 1.6.xx has compatibility problems with some apache modules so is not fully safe to install?). Anyone with a suggestion? Thanks JP

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• mailman not relaying email to external address

  - by gozzilli

  I have a setup of mailman with postfix on an ubuntu server 12.04. My problem is that mailing list emails are not forwarded to email addresses external to my institution. However the initial welcome email is received by everyone, internally and externally. in fact, a simple email from command line with mail is successfully sent to anyone after that, mailing list emails are only forwarded to internal addresses. the domain name I'm using for the server is not that of my institution who is hosting the server. Here is my main.cf: myorigin = sub.myinstitution.tld mynetworks = 127.0.0.0/8 xxx.xxx.xxx.xxx/16 # this is my institution ip range relayhost = smtp.myinstitution.tld inet_interfaces = loopback-only local_transport = error:local delivery is disabled virtual_alias_maps = hash:/etc/postfix/virtual smtpd_recipient_restrictions = permit_mynetworks myhostname = mywebsite.tld mydestination = $myhostname, localhost.$mydomain, localhost I also found these two links on serverfault and ubuntu forums, but neither of these solutions seem to do the trick for me. Any help would be much appreciated.

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• Install Rails on linux [migrated]

  - by Jseb

  I am trying to install Ruby on Rails. and i have followed the following link for the install https://www.digitalocean.com/community/articles/how-to-install-ruby-on-rails-on-ubuntu-12-04-lts-precise-pangolin-with-rvm. This link was helpful i was able to run it, and everything, however as soon has i restarted the computer i then go into my apps and run it again with rails s and this message occurs. The program 'rails' is currently not installed. You can install it by typing: sudo apt-get install rails But work before, what should i do, do i need to set the path of somesort?? I am not that great in linux so bear with me. I am using linux ubuntu 12.04 desktop and my user is john Thanks in advance

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• Upgrading Ubuntu(32 bit) 10.10 -> 11.04 fails and causes a kernel panic on boot

  - by Ubuntu Upgrade

  On Ubuntu 10.10 machine Upgrade to Ubuntu 11.04 using the update manager. The upgrade fails and leaves the system in an unstable state. When I reboot the system I get a kernel panic on boot. The error points to /opt/abc/runtime/lib/libc.so.6. By researching on this I found that there is a third party software abc causes problem. It has it's own runtime(libc) library. In /lib/ directory there is a link file /lib/ld-abc.so.2 ---/opt/abc/runtime/lib/ld-linux.so.2. If we rename this file to /lib/abc.so.2 or remove this file the the upgrade is success. Here is the upgrade log of where it crashes(apt-term.log) ===== Services restarted successfully. Processing triggers for libc-bin ... ldconfig deferred processing now taking place /usr/bin/dpkg: /opt/abc/runtime/lib/libc.so.6: version `GLIBC_2.11' not found (required by /usr/bin/dpkg) /usr/bin/dpkg: /opt/abc/runtime/lib/libc.so.6: version `GLIBC_2.8' not found (required by /lib/libselinux.so.1) ===== Could you please let me know what would be the problem of having a run time link library file in /lib directory. Does the ubuntu upgrade check the 3rd part runtime as well?

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• Grub problem with dual boot Ubuntu & XP (Ubuntu installed first)

  - by c00lryguy

  I had Ubuntu installed and I installed XP. I tried to be able to dual boot them by running an Ubuntu live cd and running ~ $ sudo grub grub> root (hd0,0) grub> setup (hd0) But now when I restart I get a black screen that says 'Boot device Selected Boot Device and press any key No matter what key I press it shows this error This is what my system looks like: /dev/sda1 - Ubuntu - ext3 - 73 GiB /dev/sda2 - Ubuntu - extended - 3.16 GiB /dev/sda5 - Ubuntu - linux-swap - 3.16 GiB /dev/sdb1 - Windows XP - ntfs - 76 GiB /dev/sdc1 - Stuff - ext3 - Code/Documents /dev/sdd2 - Stuff - ext3 - Movies/Music

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• To Run Linux (Ubuntu) on Windows 7, is using Virtual PC one of the best ways?

  - by Jian Lin

  I need to try Linux (Ubuntu) and feel hesitant to install Ubuntu on top of a Win 7 machine to dual boot (might need to use Win7 and Ubuntu at the same time). Is creating a Virtual PC on Win7, and then installing the latest Ubuntu on that Virtual PC one of the better option? So I think I can create a Virtual PC with an empty virtual hard disk (vhd), say, for 30GB, and then put in the Ubuntu DVD-R or CD-R to install Ubuntu onto that empty hard disk. Update: for some reason, the first time Ubuntu 10.04 installation CD-R boots up, it asked for the Language, and "Install Ubuntu" and then the screen has vertical green bars and then the VPC just closed. The 2nd or 3rd time it booted up, there is no asking of Language or "Install Ubuntu" and just shut down the VPC, sometimes with vertical green bars. I even created another new hard drive and same thing happened. And created VPC 02, and same thing happened. Created VPC 03 with a fixed hard drive size of 60GB and same thing happened.

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• How does Ubuntu One sync two machines with identical file content?

  - by user27449

  I have a notebook and a desktop computer, both running Ubuntu 11.10. I used to sync between the two with the help of Unison, so both computers have identical content in the Documents folder. I decided to try UbuntuOne. My question is, if I activate UbuntuOne for the two machines for the folders with identical contents, will UbuntuOne be able to recognise that, or will it sync to the cloud everything twice (and then down on the other machine). To put it another way, will I end up having two copies of everything on the machines and on the cloud, and therefore should delete the identical files on one of the machines before activating UbuntuOne, or not. Thank you, and if there is already something on the net about this, I'd be glad if somebody posted the link here.

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• Is it possible to prioritize which folders get synced first when using Ubuntu One?

  - by Philippe

  I face the problem that u1 syncs my files to a given order. I'd like to change that order. Consider that: On a week end I work and I may also copy the content of my photo SD card onto my notebook. The next time I boot my work computer, I might be sitting there and waiting for some hours until U1 synced/downloaded all the photos to my workstation and the files I need for work are the last in the '--waiting' list. I don't mind if Ubuntu One is a slow downloader, I would be just happy if I could define that all files in a certain folder (and all of it subfolders) always need to be downloaded first. I'm aware that there was once the possibility to move some files to the beginning of the sync list. But that was a very clumsy way with providing the folder id etc. and in the current version of u1 I can't even find it any more. Any suggestions on how to prioritize always the same folder?

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• How do you install a USB CD Rom drive in Ubuntu 10.04?

  - by Matt Allen

  Hello, I recently purchased a USB CD ROM drive, but I don't know how to get it to work with my computer which runs Ubuntu 10.04. http://www.amazon.com/gp/product/B00303H908/ref=oss_product When I issue the lsusb command, it shows up as: Bus 002 Device 016: ID 05e3:0701 Genesys Logic, Inc. USB 2.0 IDE Adapter The computer doesn't recognize it automatically. How can I get this drive to show up as an actual drive on my computer? If this particular drive can't handle Linux, can you recommended one which can and provide a link to it so I can purchase it? Thanks!

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• Getting the Dell XPS 16 Synaptics touchpad to work after hibernation in Ubuntu.

  - by Aron Rotteveel

  I am currently experimenting with using Ubuntu as a my main OS instead of Windows 7. So far, pretty much everything is working fine, except for an issue that I am having with my touchpad. I have a Dell XPS 16 (1640) with a Synaptics touchpad. It works out of the box, but it seems that it stops working after returning from hibernation mode. This problem has also been addressed in an earlier bug, but judging from this bugreport, it should be fixed by now. I am running the 2.6.35-23-generic-pae kernel. Any ideas?

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• How do I enable the Ubuntu One tray applet?

  - by Richard Holloway

  I am running 10.04 and I am unable to get a tray applet to appear for Ubuntu One. I am sure there was an applet in 9.04 (Jaunty) and 9.10 (Karmic). I have the package ubuntuone-client-gnome installed which Synaptic tells me "This package contains the tray applet and Nautilus extension, providing integration with the GNOME desktop." The applet is not on the "Add to panel..." list and there doesn't appear to be anything in the menus. So how do I make the applet appear?

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• How do I get one monitor on top of the other in Ubuntu 10.10?

  - by Jan

  I'm using a laptop and a monitor (wall mounted) over my laptop. I would like to reflect this physical hardware setup in my software screen setup. So that I can move my mouse upward, out of my laptop screen and use the monitor on the wall. I have been searching for a solution for a while, and I hope somone can help me out. I'm using Ubuntu 10.10 "out of the box". Side by side screen setups works just fine, over/under is doesn't work.

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• How do I safely use a virus infected USB drive in Ubuntu?

  - by suhridk

  I have an USB drive which I know is virus infected (an anti-virus on my friend's machine detected it). Unfortunately neither of us know the virus name and I don't want to take the risk of plugging it to my Windows box again. Of course, in all probability the virus affects only Windows. (But I'm not sure) I want to know if I can safely plug the USB into my Ubuntu Lucid laptop and copy the stuff I need from the drive. If there are some precautions I need to follow what would they be?

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• trying to install ubuntu touch to nexus 4 - can't connect device (14.04 in virtual box on mac)

  - by Fiona Cox

  I'm trying to install Ubuntu touch to a nexus 4. I've followed all the steps so far, downloaded the packages and gotten the phone ready, but now I got to the step of connecting it to the computer [under 'Enable USB Debugging'], but it's not listed when I try $ adb devices (I tried the 'adb kill-server' command first too, but nothing is listed). I'm sure it's something simple I'm forgetting, but can anyone help please? I have debugging enabled. Running Trusty in VirtualBox on MacBook. Thanks!

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• Wine 1.4. Cannot install vcrun6 on Ubuntu Studio 12.04.1 64 bit

  - by ABOBA

  Cannot install vcrun6. I tried to do it with winetricks and manually (download vcredist.exe and install), but nothing. Launching in terminal gives the following _user@_user-machine:~$ WINEPREFIX="/home/_user/.wine" wine "C:/vcredist.exe" fixme:setupapi:SetupDefaultQueueCallbackW notification 262144 params 32f63c,0 err:setupapi:SetupDefaultQueueCallbackW copy error 0 L"C:\\users\\_user\\Temp\\IXP000.TMP\\comcat.dll" -> L"C:\\windows\\system32\\comcat.dll" fixme:setupapi:SetupDefaultQueueCallbackW notification 262144 params 32f63c,0 err:setupapi:SetupDefaultQueueCallbackW copy error 0 L"C:\\users\\_user\\Temp\\IXP000.TMP\\msvcrt.dll" -> L"C:\\windows\\system32\\msvcrt.dll" fixme:setupapi:SetupDefaultQueueCallbackW notification 262144 params 32f63c,0 err:setupapi:SetupDefaultQueueCallbackW copy error 0 L"C:\\users\\_user\\Temp\\IXP000.TMP\\oleaut32.dll" -> L"C:\\windows\\system32\\oleaut32.dll" fixme:setupapi:SetupDefaultQueueCallbackW notification 262144 params 32f63c,0 err:setupapi:SetupDefaultQueueCallbackW copy error 0 L"C:\\users\\_user\\Temp\\IXP000.TMP\\olepro32.dll" -> L"C:\\windows\\system32\\olepro32.dll" fixme:setupapi:SetupDefaultQueueCallbackW notification 262144 params 32f63c,0 err:setupapi:SetupDefaultQueueCallbackW copy error 0 L"C:\\users\\_user\\Temp\\IXP000.TMP\\stdole2.tlb" -> L"C:\\windows\\system32\\stdole2.tlb" The distribution is Ubuntu Studio 12.04.1 64bit Thanks in advance

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• How to reinstall latest Ubuntu Touch on Nexus 4?

  - by Galen Gruman

  I've followed the instructions on https://wiki.ubuntu.com/Touch/Install, first doing the steps that lead to phablet-flash -b and then the manual ones. In both cases, I get stuck at the Google boot screen. It does not boot into Touch. No errors during manual install, and adb devices shows the device, but I get the following with phablet-flash or phablet-flash -b (second and subsequent times, not the first time): Device detected as /system/bin/sh: getprop: not found Unsupported device, autodetect fails device When working on flipped images, detection does not work and would require -d Not clear what that all means. The Nexus 4 had the initial Touch dev preview on it, FYI. I saw no separate instructions for upgrading from that.

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