Ubuntu is a Linux distribution with an emphasis on ease of use and installation. Note that http://askubuntu.com is specifically dedicated to Ubuntu questions.

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3
votes
1answer
1k views

xorg.conf XkbOption ignored for terminate:ctrl_alt_bksp to restart X

I want Ctrl+Alt+Bksp to restart X, so I created an xorg.conf rule: /usr/share/X11/xorg.conf.d/53-zap.conf: Section "ServerFlags" Option "DontZap" "false" EndSection Section "InputClass" ...
6
votes
1answer
6k views

Running F.lux (Flux) or Redshift with Multiple Monitors with Nvidia Optimus

I have tried installing F.lux and then Redshift, and configured them to run on multiple monitors with no success. I wonder if my setup, which includes Nvidia Optimus setup using Bumblebee could be the ...
3
votes
1answer
3k views

Sound volume control does not work in Ubuntu

My sound volume control does not work when I'm logged in with my regular user, though the sound works correctly. What's weirder is that the sound control works when I'm logged in as guest. With my ...
0
votes
0answers
31 views

Ubuntu does not find shared object file; sudo ldconfig -v did not help

I'm on a 32 bit Xubuntu 15.04 installation on which I have to work with a legacy application, which I only have in binary form. That binary requires libstdc++-libc6.2-2.so.3, which I managed to find ...
13
votes
6answers
2k views

Is there a root password on OS X and Ubuntu?

When you setup a new Ubuntu or OS X installation a user is generally created for you. On OS X it is whatever username you pick. On Ubuntu (the server version) usually the ubuntu user is created. The ...
1
vote
0answers
33 views

How to run a jar together with faketime

I need run a certain jar file with a mock time for testing purposes. When I execute the jar in the usual way $ java -jar myjar.jar it runs perfectly. But when I try to run it together with ...
2
votes
2answers
24 views

User Admin - View Permissions when 750 is used for home

apologies if this question is caused by a fundamental misunderstanding. But as main admin of a server: I want to make it so that users cant see each others home folders. (so I chmod 750 the home ...
0
votes
0answers
22 views

Ubuntu can't connect to my Google

Every time I turn on my Ubuntu machine, I am greeted with the same message: "Can't connect to Google accounts." My Google said that I needed to verify that signin, and I did, but for some reason, ...
0
votes
1answer
35 views

Conditions sent over ssh are performed locally, not remotely [duplicate]

So I am trying to do something like this: ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i \ /home/backupboy/.ssh/id_rsa user@server.com \ "[[ $(ls -1 /mnt/dir | wc -l) -gt 4 ...
1
vote
1answer
3k views

How to troubleshoot and fix Wifi driver on Wandboard DUAL?

Environment Wandboard DUAL C1 Ubuntu Trusty using these instruction Issue I was able to install Ubuntu Trusty and I am failing to get the Wifi driver to work. root@ubuntu-armhf:~# uname -a Linux ...
1
vote
1answer
47 views

How to resolve “mount.nfs: access denied by server” error

I am trying to mount a directory from a Raspberry Pi 2 (the NFS server) from an Ubuntu 15.10 PC (the NFS client). When I try, I get the error: mount.nfs: access denied by server while mounting ...
3
votes
2answers
148 views

Supervisord at 99% cpu usage

I've installed supervisord using: sudo apt-get install supervisor on my Ubuntu 14.04 server as per the instructions in the Laravel documentation. I've noticed that the supervisorctl process on my ...
0
votes
0answers
55 views

Stuck on grub rescue with no /boot directory?

Deleted a partition during Windows 7 installation. Now all I get is error: no such partition. Entering rescue mode.. grub rescue> I tried to look for /boot directory: grub rescue > ls ...
1
vote
3answers
7k views

How to repair Ubuntu after upgrade? (from recovery mode)

I have gone through countless threads on the following error and none have helped. Your screen, graphics card, and input device settings could not be detected correctly. You will need to configure ...
1
vote
0answers
102 views

Suspend isn't working anymore after upgrade to xubuntu 15.10

Suspend doesn't halt my old computer (DELL Precision T7400) since I updated to xubuntu 15.10. I have a black screen after suspending but the computer is still working (fan, led, ...) I suspect ...
0
votes
1answer
28 views

Running the Following Playbook syntax appears to be correct but getting following ERROR!- 'blockinfile' is not a valid attribute for a Play

Running the Following Playbook syntax appears to be correct but getting following ERROR! ERROR! 'blockinfile' is not a valid attribute for a Play The error appears to have been in ...
1
vote
0answers
19 views

Ubuntu 14.04 crashing when 2 monitors are plugged in

The title is pretty self-explanatory. Ubuntu 14.04 is crashing, but only if 2 monitors are plugged in. If I start my computer with just the main monitor everything works fine. What is weird is that ...
1
vote
0answers
45 views

Rsyslog not creating log files

I'm hardening an Ubuntu 14.04 VM to CIS standards and am having a problems getting rsyslog to create the necessary files. Note: I'm getting better with Linux but I'm no master yet, please excuse any ...
1
vote
1answer
50 views

Puppy Linux on laptop running Ubuntu 14.04 (dual-boot)?

I just read about Puppy Linux the other day. The latest release is called Tahrpup, and is partially built from Trusty Tahr (Ubuntu 14.04). So now I am curious, and I would like to install it on my ...
20
votes
5answers
114k views

mount.nfs: access denied by server while mounting on Ubuntu machines?

I am a linux newbie and I have a very basic question. I have three machines in production - machineA 10.66.136.129 machineB 10.66.138.181 machineC 10.66.138.183 and all those machines ...
0
votes
0answers
71 views

Ubuntu 14.04 stuck on boot: blank purple screen. Can only kill power

I did some digging but couldn't find an answer to my problem. I'm a first time Linux user, when I turn on my laptop running ONLY Ubuntu 14.04 on it, 50% of the time it freezes on a blank purple ...
1
vote
1answer
2k views

Start application as root at boot time on Ubuntu 14.04

I'm working in Ubuntu 14.04 I have an C++ application which I have compiled. I get the executable which name is "program". Well the thing is that this program use opencv and sockets then if I try to ...
1
vote
1answer
294 views

Why are --older-than and --younger-than killall options missing in RHEL/CentOS?

I've experienced this issue in cleaning up scripts written by developer who were writing for Ubuntu systems, as well as ServerFault questions like this. Is there any reason the -o, -y (--older-than ...
2
votes
1answer
8k views

minicom showing offline

I am trying to use minicom in Ubuntu. To do this I first connect my USB to DB9 converter, then I type this command on terminal dmesg | grep tty to check if my USB to DB9 converter is connected ...
0
votes
0answers
23 views

NGINX and PHP Pools

We host quite a few client sites, and I've inherited a shared hosting ecosystem on DigitalOcean. We run a LEMP stack, and all sites were at the same permission access level as eachother. We are now ...
2
votes
1answer
1k views

Ethernet Connection not working on Ubuntu 14.04 (with Windows 10 dual boot)

I've dual booted Windows 10 (first) with Ubuntu 14.04. The ethernet works fine when logged into Windows, but when I log into Ubuntu, The Connection Icon (right on the top tray) shows the wireless ...
-3
votes
0answers
39 views

Vncpasswd script for ubuntu 14 server

I have all other issues resolved one last thing is ,i want vncpasswd as automated . These commands are working perfectly when i copy paste them in terminal but these aint working in script File. I ...
1
vote
0answers
47 views

Automatically enable systemd services installed using deb?

I'm building a bunch of services to install on my own (automatically created) servers. I'm migrating from upstart on Ubuntu 14.04, where services are enabled by default (we have to do extra work if we ...
0
votes
1answer
869 views

How do I add custom GPG key to Ubuntu/Debian installer?

I'm trying to setup custom Ubuntu install CD using instructions on http://beezari.livejournal.com/191717.html I've added my GPG key to ubuntu-keyring and signed Release file with it (resulting in ...
1
vote
1answer
39 views

Reopen Terminal windows after restarting

In Mac, if I have a few Terminal windows open and I restart the computer or quit Terminal, the windows that were open last are opened again with their working directories and command histories ...
2
votes
3answers
21k views

GRUB-EFI installation fails while installing Kali Linux in external hard disk

I was trying to install Kali Linux from a live USB to an 1TB external hard disk. At first I was unable to boot the live USB with my H2O Insyde BIOS. Then I converted my pen drive partition table to ...
-1
votes
1answer
30 views

Create a restricted user on Ubuntu

I need to grant guest SSH access to some user to review our server. He could: access only /opt/www/ folder (and subfolders) can list folders but can't read files content can't edit/create files ...
1
vote
4answers
552 views

Apt Unmet dependecies: libefl-bin

I am encountering an error when I run apt-get upgrade. It appears I have a package installed that has unmet dependencies. uname -a output: Linux kbu 3.19.0-56-generic #62~14.04.1-Ubuntu SMP Fri Mar ...
1
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0answers
24 views

NFS shares not being exported on reboot

When I reboot the NFS server (Ubuntu 14.04), it is not exporting the NFS shares (sudo showmount -e is empty). I have to open a terminal and manually sudo exportfs -ra. After that showmount will then ...
0
votes
1answer
938 views

Desktop files disappeared mysteriously. Entire directory missing

My desktop files on Ubuntu disappeared mysteriously when I tried to drag and drop files to my pen drive. I tried all options available on stack exchange and elsewhere on the internet, like ...
3
votes
1answer
8k views

After installing a new Kernel in Ubuntu 14.04, rebooting takes me to busybox initramfs. How do I mount a filesystem after that?

I have a virtual machine with Ubuntu 14.04 in it. I recently built and installed linux-3.14.5 kernel on it, and tried to boot into it, but it drops me to BusyBox v1.21.1 built-in shell. Here's what I ...
1
vote
0answers
44 views

How to Install latest version of Node js for Elementary OS (ubuntu)

I have downloaded node v5 for Linux on the *node website and found some instructions on how to Install a tar.gz file but this file ends with tar.xz and I can't find any instructions for that. Please ...
0
votes
0answers
20 views

Permanent proxy by sshuttle to Tunnel all the traffic

I need to set a proxy for my server. So I ran sshuttle on my server as follows:screen -dmS proxy sshuttle --dns -r alex@152.21.94.233:2020 0/0 When I log out the session, I can not login to the ...
0
votes
1answer
23 views

Why apache2 is rendering only index.html

I want to redirect the apache to a directory in my server to render from the index.html, i am new to ubuntu and apache, please help me that where i have to modify in the apache in ubuntu 14.04 server. ...
0
votes
2answers
32 views

Apache and symbolic link in /var/www/html

I'm trying to create a symbolic link to /home/user/www from /var/www/html so i can access the directory in my home folder from the URL: http://localhost/www/ I did: ln -s /home/user/www /var/www/html ...
0
votes
0answers
59 views

Ubuntu 2 terminator windows 2 layouts with difference colors

i have 2 terminator windows with 2 difference layouts default and mylayout. I want 2 difference colors for my lyouts, nit profiles, is it possible? I try to add at config file in layout section some ...
0
votes
0answers
24 views

Unable to install/boot Ubuntu 14.04

I have downloaded a 64bit version of Ubuntu 14.04 for my little Lenovo Laptop, and saved it on my desktop. Using unetbootin I mounted the file and started the installation process. After following the ...
2
votes
1answer
787 views

Auto reconnect to wifi once disconnected?

On Ubuntu 14.04, I am using a usb wireless adapter to connect to a wireless network. The connection is often disconnected (I have tried to solve the problem, but I don't know why. That is another ...
3
votes
2answers
2k views

Log from oom killer

I'm running a virtual machine at a provider where you pay for everything you use (CPU, memory, disk IO, bandwidth, etc). Currently my machine has 512MB ram and 1GB swap area. The kernel version is ...
0
votes
1answer
761 views

Starting Resque worker with script doesnt work, starting by hand does

I am trying to figure out why my process doesn't work if started via a script, but works fine if started by hand. Here's the details: script is a resque worker start script. The script location is ...
1
vote
1answer
26 views

Wacom Tablet (integrated; X201T) disconnects sporadically

I have an X201 tablet with stylus and finger multitouch running Ubuntu 14.04.4 with the 4.2.0 kernel. For no apparent reason, it seems to have an affinity for not recognizing finger (henceforth ...
1
vote
2answers
2k views

How to set up wifi hotspot with 802.11n mode?

I have two computers running Ubuntu 14.04 (ok, one is actually Mint 17.1, but that's based on Ubuntu 14.04), and I am looking to use one as a wi-fi hotspot for the other. Both computers have identical ...
0
votes
0answers
21 views

du -sh * discrepencies [duplicate]

Can someone explain why the following results do not add up. I just rebooted and logged in, and I have the following: As root: du -sh /home/* 7.8G /home/mike 4.0K /home/Systemback `du -sh ...
2
votes
3answers
4k views

Docker container not able to ping host

I am following this tutorial https://docs.docker.com/articles/networking/#between-containers I have used following commands $ sudo brctl addbr bridge0 $ sudo ip addr add 192.168.0.160/24 dev ...
4
votes
1answer
2k views

Powertop doesn't display Power est. column

When I run powertop, it doesn't display the "Power Est." column that shows the estimated power consumption in Watts of each row. It should look like in the screen capture here: MacBook Pro Retina: ...