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• cannot use sudo on ubuntu server passwordless authentication?

  - by Lucas Crijns

  Hello I'm new at the forum and I want to introduce myself: I'm Lucas Crijns and I'm a very happy user of ubuntu server. I was reading about passwordless authentication with ssh. So I made a key and published it to ubuntu server, it worked well and I could login with my private key. But then I locked the account to prevent hacking from my password. After I ran "passwd -l lucas", I was not longer able by my next login to use sudo. Because it was asking for a password and I locked it. I was thinking that sudo would also be without a password. My question is now: is it possible to use sudo? And how can I enable it without a valid password for sudo? Thank you for your help!

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• gcc no longer works after up grade to latest Ubuntu

  - by Hugh S. Myers

  As an example: hsmyers@ubuntu:~/c_dev$ cat hello.c #include <stdio.h> int main(int argc,char **argv) { printf("Hello World!\n"); return 0; } hsmyers@ubuntu:~/c_dev$ gcc -c -o hello.o hello.c In file included from /usr/include/stdio.h:28:0, from hello.c:1: /usr/include/features.h:323:26: fatal error: bits/predefs.h: No such file or directory compilation terminated. At a guess somewhere along the way after trying to fix the error message: /usr/bin/ld: cannot find crt1.o: No such file or directory I've munged things up completely. Could anyone please advise? --hsm

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• Failed update of Ubuntu 10.10 results in unbootable system

  - by chessweb

  Hi, yesterday I performed an automatic security update suggested by the update manager on my virtualized (with VirtualBox on a Windows 7 host) Ubuntu 10.10 installation. The update somehow failed and left me with an unbootable system. When I try to boot, I am told that various folders, files, and what not are missing. Then the system drops into a busybox and leaves me with an (initramfs) prompt. This happens with all kernels I get offered by GRUB, although the error messages are quite different from kernel to kernel. Well, the short of it is this: I don't have the slightest idea on how to get back to a working system and this site is the final straw I'm willing to grab. A complete disaster like this following an update initiated and executed by the system is unheard of in Windows-land; at least I haven't heard of it, yet, and therefore I am going to abandon Ubuntu and Linux altogeteher, if there is no remedy. Regards, RSel

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• apt-fast for ubuntu 14.04?

  - by Jatin Kaushal

  I just upgraded to ubuntu 14.04 from ubuntu 12.04 (Which I loved) and now, I cant install apt-fast. My net connection is very slow and I want to download using apt-fast but whenever I add the apt-fast ppa and update and try to install it, It says package apt-fast not found How do I fix this? thank you. I really appreciate The effort made by askubuntu (Which includes you awesome people ;)) To help me. My problem has already been answered. Here is a screenshot of my software sources. The person who answered my question has apparently removed the comment that answered my question but here is the repository that helped me add apt-fast sudo add-apt-repository ppa:saiarcot895/myppa So if this helps I would like to upvote each and every person who helped me and I will accept one answer too, Just give me some time to test both of them ;) anyway thank you guys to help me. You are awesome :-) XD

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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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• how to install gfortran package on ubuntu 12.04 offline pc

  - by veerendar

  I have downloaded gfortran package from there site and now looking for installing it on the offline ubuntu 12.04 pc... please don't close this question stating possible duplicate. I am looking for steps to install the package by extracting and installing it. I don't want to use get-offline neither keryx nor to use some other online ubuntu systems. I am very much clear.. I have the downloaded package and I am looking forward for the steps to install the package with out accessing internet. Thanks!

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• Mobile Internet Modem Olivetti Olicard 155 does not work in Ubuntu 12.10

  - by João Fracassi

  I have a problem, I bought a 3G mobile modem, but does not work in Ubuntu 12.10, also did not work on Ubuntu 12.04. I installed the USB Modeswitch and has the same flaw, does not recognize the modem within the connection manager, I connect the modem to the USB port and wait up to 20 minutes and does not recognize the modem. I ran the command recognizes the modem and lsusb as "Bus 001 Device 007: ID 0b3c: C004 Olivetti TechCenter." Does anyone have this modem, you can help me solve the problem, or does anyone have a solution? Because the manufacturer does not support Linux and according to some forums usbmodeswitch supports esste model. Olivetti Olicard modem 155.

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• security cameras and Ubuntu

  - by Josh

  I am setting up a server of sorts and chose ubuntu for the OS as my dad has it on a few computers. I am unimpressed with Windows or MAC due to all the add-ons and complexity of it when all I want is something simple. The system will have 3 purposes, storing my wife's photography work (she is a professional photographer) storing music for quick access to our entertainment system (will be running the system thru the tv in our living room and thus though our surround sound) and will also serve as a DVR unit for a home security system I am going to put together. My question is what sort of software options are there for the Ubuntu system as far as a DVR with frame by frame playback. It does not need to be fancy but of course a variety of options are a nice touch.

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• Ubuntu cannot boot after kernel upgrade

  - by andrey

  Today I have upgraded the Linux kernel (using the Update Manager), from 3.0.0.16-generic to 3.0.0.17-generic. However, after this update, Ubuntu 11.10 cannot boot anymore. I see a strange message which says "initclt: event failed". And if I press [Ctrl]+[Alt]+[F1] it still allows me to log into the text mode. But if I type sudo lightdm, I cannot log into the graphical mode. However, if I choose to boot an older kernel from the GRUB, Ubuntu boots correctly. What should I do, in order to be able to boot the system using the new kernel?

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• Macbook Pro 8,2 Graphics switching - Ubuntu 12.04

  - by fgs

  I've been reading docs and various pages for a few hours now and can't seem to put all of the pieces together on this. Basically I am trying to get 12.04 installed on my MBP 8,2 with graphics card switching working in some way or another. My basic understanding is that I need to do an EFI boot install of ubuntu so that graphics card switching will work (due to the hardware design). From there I may be able to use one of the kernel modules for graphics switching: https://help.ubuntu.com/community/HybridGraphics That article isn't clear on whether I need to do an EFI install. I have also seen comments in posts here that say and EFI install works by default as long as you have refit installed. Overall, I'm quite lost as to the simplest way to proceed to get an install up and running with graphics switching. I don't mind using open source GFX drivers as long as the basics work. Any help towards a solution is greatly appreciated.

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• Cannot reboot or even shutdown my ubuntu

  - by Romel Salwi

  I use ubuntu 11.10. I recently installed gnome shell. The problem I'm facing is that i'm not able to restart or shutdown from ubuntu. I clicked on restart or shutdown button and nothing happens. Just nothing. I even try to login from my unity shell and still the problem persists. Even more funny, when I boot into linux, and seeing the login screen, Still even after clicking on shutdown, I won't happen. What mistake have I performed? But I'm able to perform reboot with the command "sudo reboot". Any assistance please. Thanks in advance.

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• Wobble effects not working on Ubuntu 12.04

  - by Sunny Deere

  Just couple of days before installed Ubuntu 12.04 with all the necessary upgradations. Also installed Compiz Settings Manager & loved the animations & wobble effects of windows. But after restarting windows today, started receiving error messages & Wobble effects are disappeared. Also, other settings created by me in my last login, like small sidebar icons, too disappeared & unable to find even option in "All Settings Appearance" to resize the icons. Loved Ubuntu 12.04, specially Animation & Wobble effects but unhappy with these errors. Thanks in advance.

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• php is not working well on ubuntu 13.10 and mcrypt is missing in phpmyadmin

  - by mohamad

  I've upgraded from UBUNTU 13.04 to 13.10 but I can not work with php pages or phpmyadmin . I've tried this way to install lamp on ubuntu sudo apt-get install lamp-server^ phpmyadmin and I've done all of the configuration correctly after installation I've added this line Include /etc/phpmyadmin/apache.conf to /etc/apache2/apache2.conf then I restarted apache2 but in phpmyadmin on the bottom of the page is this error : The mcrypt extension is missing. Please check your PHP configuration I've check and mcrypt was in it , but in phpmyadmin it gives me error of missing . the other problem is on PHP pages it seems like there is no PHP and it's all html because lots of PHP lines are printed in textbox's like : <? echo $row['details']; ?> can anybody tell me what should I do ?

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• Ubuntu Server 12.04 + Wine + Filezilla FTP Server help

  - by Rebecca Joy

  I am not very experienced with non-windows operating systems, so please if you can answer, consider me to be a complete newbie with this. I have a Ubuntu Server 12.04, I installed Wine on it so I could install some familiar programs with GUI on my Ubuntu. I installed Filezilla Server using Wine, that went fine, the server is running, but I cannot find the GUI anywhere. I know it is running because in the winefile, if I execute the filezille server.exe, it says it is already running. However I have not been able to configure anything on the filezilla server because I can't see it anywhere. What am I missing?

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• Lock screen does not display all users (ubuntu 14.10)

  - by Ali Alwan

  When I lock my screen using ctrl+alt+L, I am not able to see other users listed within the lock screen so I can switch instead. The lock screen shows only my name as an option for login, however I would like to switch to other user accounts. In Ubuntu 12.04 it used to show all system available users in lock screen and I was able to switch easily. Last night I upgraded to Ubuntu 14.04 and this option is gone. How do I set back this option?

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• Ubuntu 12.10 Nvidia GT555M Bumblebee

  - by herczigem

  I have laptop with Nvidia GT 555M video card. System Ubuntu 12.10, kernel Linux 3.5.0-17-generic step what i do: sudo add-apt-repository ppa:bumblebee/stable sudo add-apt-repository ppa:ubuntu-x-swat/x-updates sudo apt-get update sudo apt-get install bumblebee bumblebee-nvidia restart system optirun glxgears This message give me: Cannot access secondary GPU - error: Could not load GPU driver Aborting because fallback start is disabled. Open sudo gedit /etc/bumblebee/bumblebee.conf and change Driver= to Driver=nvidia and KernelDriver=nvidia-current to KernelDriver=nvidia. Restart the system and run optirun glxgears. This message gives me: The Bumblebee daemon has not been started yet or the socket path /var/run/bumblebee.socket was incorrect. Could not connect to bumblebee daemon - is it running? Anybody have idea?!

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• MyPaint is an Open-Source Graphics App for Digital Painters

  - by Asian Angel

  Are you looking for a terrific graphics app to use for original painting and artwork creation on your computer? Whether it is for you or the kids, MyPaint is an app that you should definitely have on hand for when those artistic moods come along. For our example we chose to install MyPaint on Ubuntu 10.10…you can easily find it in the Ubuntu Software Center by doing a quick search. Once you have it installed, all that is left to do is decide if you want to add additional brushes (link provided below) and then start having fun creating your next work of art. Here are some of MyPaint’s wonderful features: Exists for several platforms (Linux, Windows, and Mac OS X) Supports pressure sensitive graphics tablets Extensive brush creation and configuration options Unlimited canvas (you never have to resize) Basic layer support Comes with a large brush collection including charcoal and ink to emulate real media MyPaint is fun to use and can quickly become very addicting as you experiment during the creation process! Links MyPaint Homepage Download Additional Brushes for MyPaint Download the GIMP Plugin for the OpenRaster File Format Latest Features How-To Geek ETC Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The How-To Geek Valentine’s Day Gift Guide Inspire Geek Love with These Hilarious Geek Valentines MyPaint is an Open-Source Graphics App for Digital Painters Can the Birds and Pigs Really Be Friends in the End? [Angry Birds Video] Add the 2D Version of the New Unity Interface to Ubuntu 10.10 and 11.04 MightyMintyBoost Is a 3-in-1 Gadget Charger Watson Ties Against Human Jeopardy Opponents Peaceful Tropical Cavern Wallpaper

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• Unable to access internet from devices connected over wifi hotspot with ubuntu 13.04

  - by Jeesmon Jacob

  I am using ubuntu 13.04 and till couple of days back I was able to connect to internet using the hotspot connection I had created previously when I started using ubuntu 10... But two days back I noticed that devices are getting connected to wifi but are not able to access internet.. I deleted my old wifi hotspot and created a new one by going to network settings and there by clicking create a hotspot option.. I logged in from my wife's laptop which is running on windows 7. It was able to establish connection but was not able to access the internet.. Same is happening with my iPhone too I am able to connect to hotspot but for some reason it is not able to access internet... Any help would be highly appreciated.. Thanks Jacob

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• Ubuntu upgrade deleted my email accounts

  - by Johnt

  I'm a long term Ubuntu user and until today I have been really happy. I've always run Evolution and Thunderbird and after Ubuntu apparently upgraded me from 11.04 to 11.10 both my Evolution and Thunderbird programmes and all data / address books, messages and folders were deleted and I now have to create new accounts for both programmes. All my previous data is LOST. Thanks a lot guys. Why did this happen and why was there no warning given that this could be an issue ??? Is any of this recoverable ?

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• New to world of Ubuntu

  - by Michael Raymond Cheney

  I've been running Ubuntu 13.04 since June 2013, and upgrading to 13.10 as we speak.(Note I own total 3 laptops.) My goal is to have one complete Linux machine and one dual boot, and third well (he is a newer Lenovo with Windows 8.1 and is touch screen.) but I want to learn Ubuntu life and further myself with using it for everyday use, but I'm not very fluid in Linux usage and hoping to find people who have a love for teaching others how to be one with the BEST OS IN THE WORLD! Hope I've got few people wanting to teach or give good instruction for success. ~Mike Cheney~

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• Unable to install Ubuntu 12.10 on windows 8 machine/ error no5

  - by JOBIN VARGHESE

  installing crashes at halfway of 'copying files' showing an i\o device error error no5; there was problem in beginning of installation too, ubuntu was not detecting the installed windows 8. my system is a dell inspiron 5520 laptop ,with 1 tb WDC hard disk in GPT ,with EFI . my current partition is like 102 mb EFI SYSTEM partition 200 gb Windows 8 ntfs 22 gb root Ext4 8 gb swap 20 db home Ext4 680 gb ntfs Drive for storing all my files. i tried both dvd disc and usb drive, both resulted in same error. inbuild dell hardware diagnosis utility showed both hard disk and dvd drive as healthy what may be the reason and how can i install ubuntu along side my windows 8?

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• Ubuntu does not work with Nvidia drivers, gives random squares after logging in

  - by jimbo

  I tried installing both with wubi and by booting from a usb drive. After I tried both it was the same. Ubuntu tried to login, but after a while, a weird pattern with squarely shapes appeared. At one point, after using recovery mode and then the low graphics one (i don't remember how it was called exactly) i managed to get in. It still didn't display at correct resolution, and the mouse was invisible at times. However, after rebooting once, because i tried downloading the nvidia drivers, i didn't manage to get in again, so i have the same problem... I have no idea what to try to become unstuck. The main problem is that after the login, ubuntu crashes, with a screen full of randomly coloured squares. Should I just give up?

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• Triple boot problem with Windows 7, Ubuntu 12.04 & Fedora 17

  - by daniel

  I just installed Fedora 17 after Ubuntu 12.04, But now I can't boot into any of 2 linux, I also have windows 7 installed and I can boot to it, I edited boot with EasyBCD. During installation of Fedora 17 I used standard creating partition and used Separate "/boot" , "/", "Swap" , "Home" for Fedora 17, Is this fixable? or I have to reinstall 2 OS? Also Is possible to share one "Swap" partition? And I am on Ubuntu live cd. Thanks for any guides.

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• How to prevent ubuntu from connecting to wifi hotspots automatically

  - by calvin tiger

  Note: this question is distinct from "How to disable automatically connecting to WiFi?", as I do not wish to disable automatic WiFi connection in general. Problem: The Ubuntu WiFi module connects automatically in priority with WiFi networks without a password, even if there is a already known password-protected WiFi network nearby. Worse, most of the times these "unprotected" networks are in fact hotspots that require authentification from the browser. Example: I am at home, and most of the times my Ubuntu laptop will connect by itself to a nearby hotspot instead of choosing my local ADSL box (password-protected, with a password that is already known by the computer). I then have to select my own WiFi network manually. Is there a way to disable automatic connection to /all/ hotspots ?

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• Ubuntu Software Center: Add option to launch application after installation

  - by RomanIvanov

  Does any body know why Ubuntu Software Center can not launch applications after installation ? All user install application only for one purpose - launch it and use. Why we need to install it and after that search it in number of menus. Even Packages are mixed with applications that why not just allow to launch only applications that put smth in menu. Example of such convenient application center - android market, ... . Ubuntu 11.10 have pretty/sexy center but .... vital function still missed.

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