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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Using chroot to restore Kubuntu 14.04

I have accidentaly purged some system files and now Kubuntu 14.04 won't boot past the start up logo. I read online that I can perform changes on my system through my LiveUSB and the BASH chroot ...
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1answer
25 views

Console keymapping

I have installed Arch Linux on my Thinkpad W530, and none of the Fn-Fx keys or the volume buttons work. However, they do work before I have booted into Arch at the Grub menu. (I can change the ...
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28 views

Practical method to safely use a USB stick on daily basis for Linux

Which practical method exist for safely using a USB stick on a daily basis, for Linux-based systems (e.g. Ubuntu) ? With emphasis over the following: I'm well aware that nothing is 100% secure ...
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49 views

Errors building and installing clBLAS on Ubuntu 16.04 (64bit)

I'm tring to build clBLAS from source on Ubuntu 16.04 (64bit). From the cmake configuration output it appear the dependencies have been satisfied. I'm being guided by instructions from here like so; ...
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0answers
28 views

xcalib not saving brightness settings and other issues [closed]

I have certain issues which I'll list below, I hope you can help me: 1.) I have xcalib installed, I use it to manually change my contrast settings (something not possible in ubuntu directly, at least ...
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32 views

ssh doesn't let you change your password ,if expired

abc@xyz:~$ ssh root@178.63.93.31 root@178.63.93.31's password: You are required to change your password immediately (root enforced) Welcome to Ubuntu 14.04.4 LTS (GNU/Linux 3.13.0-85-generic x86_64) ...
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2answers
69 views

How to Find LaTeX generated PDF files?

I need to find LaTeX Generated PDF files because I want to find those files made by me. I think find could possibly work here. OS X El-Capitan I run Ulrich's proposal find BitTorrentSync/ -exec ...
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0answers
27 views

Which script is responsible for mounting an HGFS share on an Ubuntu 16.04 guest running on a Windows host in VMWare Workstation 12?

I'm trying to change the permissions of the mount so that the owner of all files/folders in the shared folder residing on the Windows host doesn't default to root. I've found this http://www.zendbox....
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0answers
88 views

Ubuntu 16 stop lightdm and start xinit/xterm

I am working with Ubuntu 16. I have been able to stop the desktop environment using: sudo service lightdm stop Now I would like to start, from another terminal in a console environment, the X ...
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0answers
51 views

scp and rsync not working when executed within .sh files from “startup programs window”

With Ubuntu Mate 16.04, I have a file my_backup.sh like this: # Log just for trying echo $(date) >> /home/albert/dia_hora # BBDD NOW=$(date --date="yesterday" +"%d") FILE="...
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1answer
41 views

Increasing a Volume

I used Gparted Live cd to resize a volume group and logical partition when i reboot and try to use lvextend –l +100%FREE /dev/vda5 i get this message : Path required for Logical Volume "–l" ...
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0answers
101 views

Apt-get error : Writing more data than expected (7643558 > 7643216)

I am getting some weird errors with an ubuntu docker container: "Writing more data than expected (7643558 > 7643216)" Retrying the operations succeeded. I got this several times. I am running the ...
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1answer
41 views

xkill Used On Desktop

Mouse accidentally clicked on Desktop while active with an xkill terminal command. Which makes it completely without use. Have used nemo command which resets everything as long as terminal remains ...
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0answers
22 views

How to rename boot options with dual boot

I have Ubuntu and Windows 10 installed side-by-side, and the BIOS tool that's installed on the computer is called "Aptio Setup Utility". How can I rename the boot options, not just for the OS I'm ...
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0answers
36 views

CentOS “mount.nfs: access denied” to Ubuntu NFS server

I have a NFS server on Ubuntu 14.04.4 and NFS client on CentOS 7; can this work? I keep getting a "mount.nfs: access denied by server while mounting" error. I've tried turning off the firewall on the ...
2
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1answer
29 views

Is it safe to uncheck Ubuntu Recommended Updates?

I'm currently using Lubuntu 16.04 LTS . There are three options in Software and Updates app which are Important security updates (xenial-security) should be necessary. It doesn't matter having ...
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1answer
39 views

How to auto-mount shared SMB folder on logon?

I'm using Ubuntu 14.04. When I log on I see in the Files manager (near the bottom) this: I routinely click "Connect to Server" and then see this: I then double-click those and they are ...
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1answer
70 views

SVN connection refused (Ubuntu)

I'm trying to check out my repository, but it can not connect to my project archive and refuses the connection. When I try to checkout in Uni it works, but not at home. I tried to change the ~/....
2
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1answer
93 views

Android-x86_64 installer does not boot in QEMU/KVM - EFI Shell appears instead

I downloaded Android x86_64 5.1-rc1 as bootable img installation image. I want to install it to a virtual machine running on Ubuntu 16.04 64 bit with UEFI using QEMU/KVM and virt-manager as graphical ...
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0answers
54 views

FreeBSD or simply Docker for my old Linux server?

I have an old obsolete server running a Linux Red Hat server 5.9 and inside a special software for a power plant control and I've been asked to replace this server as not so much spare parts are in ...
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3answers
83 views

No more disk space, nothing eating my disk. Why?

I had 100% of disk use on /dev/xvda1 Which is the system partition, so I decided to mount /var/lib On another partition /dev/xvdf since docker files under /var/lib were eating much space. ...
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0answers
11 views

Mic input ignored in Win7 HVD running from Ubuntu 15, 16, but not 14

The actual symptom I'm seeing is on Windows 7, but I think the root cause is in Ubuntu. I have a CentOS7.2 laptop, which I run an Ubuntu VM from, and from that VM I run VMWare Horizon View to run a ...
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0answers
40 views

Pagemap on memory mapped devices not working

I am trying to find the physical addresses of heap variables, stack variables and memory mapped peripheral addresses using the /proc/{pid}/pagemap file using the steps detailed in the file: http://lxr....
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0answers
20 views

Crouton/linux problem

I've installed Ubuntu on my chrombook using crouton, so I can switch between OS's. However, the screen keeps flickering to chrome OS when I'm using Ubuntu. Does anybody know how this could be fixed? I ...
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1answer
33 views

Recovering a partition after being reallocated

I have two partitions, c and d. Recently, I've decided to install Linux Ubuntu on the machine, and intended to do that on the c drive. It seems however that I messed up something during the ...
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1answer
31 views

After 2nd tmux pane windows can't be opened

For the 1st pane on tmux, I had to do this but can open a window. For 2nd and all the rest of panes, I can't open windows. For example: $ echo $DISPLAY localhost:10.0 $ meld . & [1] 466 ...
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2answers
65 views

SSH connection to specific server refused

I have an ubuntu Server in Digitalocean. Normally, I can connect this machine with SSH but while I'm connected to my school network, when I wrote ssh root@IP , it freezes and never even ask my ...
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1answer
253 views

Ubuntu 16.04: How is the bonding kernel module gettting loaded automatically?

I recently set up an Ubuntu 16.04 system with a bonded ethernet configuration. Previously, it appears that to get this to work the bonding module needed to be included in /etc/modules or /etc/modules....
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0answers
256 views

Start vino-server in Ubuntu 16.04 lts

I'm trying to raise vino-server in Ubuntu 16.04 but I could not. I am using this script and let me start by terminal: # /etc/init.d/vino-server.sh start but not as a cronjob: @reboot /etc/init.d/...
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116 views

Ubuntu login loop, amongst other issues!

Before I explain the issue, please bear in mind that I am a complete newbie to using Ubuntu on a desktop. I have some Ubuntu Server experience and know the basics of terminal/CLI. Seems like this is ...
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2answers
59 views

How to create a virtual systemd service to stop/start several instances together?

I plan to host several instances of the same web app for customers using systemd. I would like to be able to stop and start each customer instance using systemd, as well as treating the whole ...
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1answer
71 views

Ubuntu 14.04 black screen after Nvidia Driver 352

I wanted to make use of my Nvidia graphic card so after a little bit of reading I saw that it is possible to change it in the Additional Drivers. It's somewhat similar to here: Ubuntu 14.04 Nvidia ...
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1answer
48 views

Problems creating log file of mono-service assembly output

When we start in the mono-service mode on Ubuntu Linux 16.04 in the background, we would like to create and store a log file at wherever the user wants. I tried this URL, stackoverflow.com/questions/...
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1answer
452 views

Problem with public key on apt-get update

I have Lubuntu 16.04. My problem is similar to this questiuon: sudo apt-get update Get:1 http://it.archive.ubuntu.com/ubuntu xenial InRelease [247 kB] Hit:2 http://ppa.launchpad.net/...
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1answer
76 views

Openvpn exclude ip in pool

I have an OpenVPN server running on a Linux Ubuntu box. Multiple clients connect to this server (500+) and that is why I set the server-bridge option like this: server-bridge 10.0.100.1 255.255.0.0 ...
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1answer
48 views

The LD_LIBRARY_PATH environment variable is not recognized by the target C# executable's runtime environment [closed]

I tested this C++ program on Ubuntu Linux 16.04 yesterday. What bothers me is the fact that the following program starts a mono-service programmatically which I see in the Ubuntu 16.04 /var/log/...
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0answers
30 views

PyOpenCL on Linux Mint: PLATFORM_NOT_FOUND_KHR

I've been trying to get PyOpenCL and PyCUDA running on a Linux Mint machine. I have things installed but the demo scripts fail with the error: pyopencl.cffi_cl.LogicError: clgetplatformids failed: ...
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2answers
77 views

How to run a C program as daemon?

I have a C program which I want to run as a daemon. I'm working in ubuntu 14.04LTS. Which is the right way to do that? Can anyone help?
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1answer
47 views

Remapping Caps Lock for every session

I use the following command to remap the Caps Lock key to Esc: setxkbmap -option caps:escape Unfortunately, I have to type the command every time I create a new session. I tried putting it in my ....
0
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1answer
122 views

I got error “hostname: Name or service not known” when checking IP of hostname

I'm running Ubuntu 14.04 on my company's cloud service (my instance has elastic IP) I want to check out IP of my instance i'm running by command line but it didn't work. root@ubuntu14-graphite:~# ...
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1answer
33 views

How do I make my script launch the screen as non-root

I'm running Minecraft, starting it automatically from from /etc/rc.local. I have that run /home/kent-server/mc/spigot.sh and inside that is screen -dms minecraft Java -jar -Xmx5120M -Xms5120M spigot....
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1answer
38 views

Is it safe to permanently amend the details in etc/os-release

To try to install postgresql onto a machine running zorin 9.0 I've amended the file etc/os-release. It originally looked like this: NAME="Zorin OS" VERSION="9" ID=Zorin OS ID_LIKE=ubuntu PRETTY_NAME=...
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2answers
73 views

How to create a bootable usb stick to any distro linux using terminal

I am working with 'dd' command, and I have a Ubuntu Mate ISO, my stick is sdb, these are steps: umount /dev/sdb1 sudo dd if=/path/ubuntu-mate-16.04-desktop-amd64.iso of=/dev/sdb but this does not ...
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1answer
90 views

Remote headless streaming of GUI from Linux: X says “No protocol specified” before login

The goal: I want to stream video (i.e., to Twitch) of the graphical output of a Java program I'm running on a headless Linux box. I also want to be able to start this up remotely and without a ...
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0answers
24 views

grep, failing to find an existing file with correct path given and checked [duplicate]

I need help with grep. Below is what I've written and the If function is working, but the grep part is saying grep: ~/tmp/file.txt: No such file or directory however if I copy and paste the pathway on ...
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0answers
17 views

Ubuntu fails to boot after hibernation

I had installed Ubuntu 15.10 in a separate partition on my MBA(MacBook Air 2015 model). I had set it to hibernate on lid-close. It was working all fine, until today it was not able to come back from ...
2
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1answer
81 views

Apricity OS not show in grub

I have Ubuntu 16.04 installed ( updated through 15.04 -> 15.10 ) . and Windows 10 Dual booted along with it . I tried to Apricity OS rc1 ( md5sum -> 58ad9c6172a2f45e31bd756d83107058 ) to my laptop ...
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0answers
41 views

Gray screen and cursor showing after login on Ubuntu GNOME 14.04 and /boot/efi/ empty

So before I talk about my current problem I'll give a bit of backstory. In trying to fix a problem with my boot (fixing duplicated boot entries by moving two files in grub), I ended up breaking my ...
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1answer
56 views

Removing xfce icons and themes

I was wondering if it is safe to delete Xfce themes and/or icon themes that I don't use to save disk space. Additionally, is there a apt or other package manager command to do this? Also, just in case ...
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20 views

Systemd and Interactive Service

I want to run a server application in background which sometimes requires user input as it has a configuration interface which is only accessible through stdin and stdout. Can I attach to Systemd-...