Free, open-source operating system based on Debian GNU/Linux. Ubuntu questions are on topic here, but if you prefer an Ubuntu-only audience there is AskUbuntu.com.

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How to install libelfg0-dev on ubuntu 16.04 LTS 64bit version

I am trying to setup Open-TEE environment by following the instruction from https://open-tee.github.io/documentation/ The Open-TEE requires installing libelfg0-dev. But when I run sudo apt-get ...
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72 views

Ubuntu 16.04: wifi disabled after suspend, must enable manually

Ubuntu 16.04, when I set my laptop to suspend, upon resuming the wifi will be disabled. THere is no problem connecting to wifi, it is just that each time I resume I have to manually click "enable ...
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1answer
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/etc/sudoers set user to have general sudo use, with no password prompt for only one commands

I have an entry in /etc/sudo for a user who can execute sudo for all commands. fred ALL=(ALL:ALL) ALL As per the documentation the final ALL is responsible for allowing access to all commands. ...
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1answer
48 views

How do I tell if my laptop has been messed around with?

I just have my laptop to h local service people, but the thing is, I live in a bad neighborhood. I took a backup before giving it. But how will I be able to tell if they switched out any parts with ...
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27 views

How to use both Lan and Wifi Together?(Ubuntu 14.04)

I have internet access on both lan and wifi(both are differnt network).I want to connect to both and use them simultaneously.I am able to connect to both but only lan's net is use by default.I can ...
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27 views

KDE on CentOS steals Alt-Shift from applications?

I'm using KDE on CentOS 7 on one machine and KDE on Kubuntu 16.04 on another. In both cases I've set Alt-Shift to switch keyboard layout. However, in Kubuntu Alt-Shift-XXX is still free: I can make ...
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91 views

Ubuntu 16.04: Cannot prevent wifi sleep during screen lock

I've tried quite a few approaches to this but haven't been able to get a working solution. On my laptop I noticed that the wifi 'sleeps' under screen lock which makes it impossible to leave it doing ...
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1answer
22 views

Why BOOT MENU doesn't read USB?

I've a LENOVO G50. I'd ubuntu but I would install debian from USB. So, I'd run usb with debian iso etc. but didn't run. So, I'd try with Elementary but I don't liked it. So, I tried Kali Linux in USB ...
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38 views

Lenovo Yoga 700 14ISK Ubuntu Dual Boot Wifi Issue

I bought this lenovo yoga 700 14isk laptop just under a year ago and am trying to dual boot with ubuntu. It appears as though there is a lot of problems with the wifi driver, which carries over to ...
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30 views

Ubuntu Machine boots into BusyBox

My ubuntu VM was working fine. Now when I boot up it boots into BusyBox. I have run the Unbuntu boot tool with no luck. Here is the log from the boot tool. http://paste.ubuntu.com/17567076/ How can I ...
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1answer
17 views

Copy Files From Flash Drive To Ubuntu

I am attempting to copy files from my flash drive to my local drive on Ubuntu. This is the command that I ran sudo cp -i /media/owner/ESD-USB/mysql /var/lib/ But that output a message of - and ...
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14 views

Automate bakckup using CloneZilla

How can automate backup using CloneZilla? I don't know if it's possible but I want to just plug a USB key and start the backup process with a single command that specify which hard drive to backup and ...
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12 views

rdesktop blank password not working

i am trying to access my windows machine using rdesktop from Ubuntu.i have no password on windows machine .so i am trying to use blank password . I already made changes on my windows machine.But when ...
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2answers
29 views

How safe is it to host an HTTP Apache server at home?

I have an old server with Ubuntu server and Apache2 installed. I am using it to run a small one page site. I am using 'freenoms' for the free domain 'musicmash.tk' which is connecting to my public IP. ...
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1answer
31 views

Centos: there is no ~/.cache/upstart

I'm new with linux.As I know ~/.cache/upstart is folder where system processes log their stuff. But I can't find this folder in Centos. What I'm most curious about is that on Ubuntu this folder ...
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18 views

Unable to find Ubuntu Installation

I just installed Ubuntu via USB on my Mac, everything seems to be OK. After installation completed, I restarted and it boots on OS X automatically. I thought that will be a no problem, because I would ...
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5 views

Ubuntu mounts drive, Gdisk can't find it

This is probably a rather basic question, but - Ubuntu has managed to find something on an attached hard drive image that I can't actually find with gdisk or testdisk myself. It's a rather strange ...
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42 views

After RAM upgrde, Ubuntu 14.04 does work with 2GB but works with 1 GB

I have an Sony Vaio laptop which had 1GB RAM (512MB X 2 ). I wanted to upgrade to 2GB as the laptop supports up to 2GB. When I tried to use 2GB RAM on Ubuntu 14.04 32-bit it boots, passes the BIOS ...
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1answer
20 views

Desktop interface in linux AMI in AWS

I've been fiddling around with AWS for the past two days, to see what I can do with it and how it would fit my needs. I've already installed LAMP (I installed WAMP on my own computer a long time ago) ...
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14 views

ubuntu 16.0.4, blurred sreen

Mybox is ubuntu server 16.0.4, for some reason , I apt-get install ubuntu-desktop, then i get a blurred screen after reboot. I don't know what's wrong here and hope someone help this. trace@trace:~$ ...
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28 views

Ubuntu, sending file through bluetooth

I want to send a file named read.txt using command: bluetooth-sendto. It works using the direct command on terminal bluetooth-sendto --device=MACADDR path/to/read.txt. I want to execute it with this ...
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22 views

Trim unmounted ssd

My SSD is currently in use as LVM storage for KVM machines. For administration I use virt-manager, it manages partitioning and passthrough of the ssd itself, so there is no real mountpoint in the ...
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1answer
14 views

Migrating btsync to new OS

I'm using btsync for sharing files. I want to change my OS to newer version but I want to keep my btsync folders, keys & settings How can I move my bysync to new OS? I'm using ubuntu 14.04
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28 views

How to dual boot Windows and Ubuntu using Windows boot?

I have a SSD installed with Windows 7 which is what I normally use. Recently I had a HDD installed with Ubuntu 16.04. At first I didn't know how things really work and I actually got Ubuntu able to ...
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2answers
25 views

Cannot install afpfs-ng

On Xubuntu 16.04LTS amd64, I cannot install afpfs-ng. This is a HUGE problem for me since my school uses macs and an afp file server, and I only have a PC running Linux and I need a file for the ...
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16 views

USB to Serial cable fails to establish communication on Ubuntu

I have a serial device which works fine when connected directly to the serial port of the linux box but fails when I connect it using a serial-to-usb cable - that is using the USB port on the linux ...
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1answer
31 views

Lampp (xampp) stop after reboot, not work autostart on Ubuntu

I am working with Ubuntu Server 15.04, I have a problem at some point in the night the computer restarts or shuts off the power goes out or simply stops working the lampp (Xampp) apachefriends, I ...
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25 views

Virtualbox - auto resolution used to work but don't anymore, clipboard still works

I run Virtualbox on my mac to have access to a Linux (LUbuntu 14.04). I installed it three days ago, and after a few googling I managed to set it up properly, with the resolution working fine. But ...
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2answers
34 views

Ubuntu - Windows 10 - MBR

I realise this question looks like so many others, but its slightly different and I cannot find an answer elsewhere. Basically I have goosed my MBR numerous times in the past and this time I wanted ...
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12 views

Virtualbox lubuntu internet gateway wont work

I've been trying to make a simple gateway in virtual box (lubuntu 16) I've started a simple http server (on port 8080) and redirected port 80 to 8080 and started a dns server (on the host machine) ...
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1answer
32 views

Is it possible to install 2 OS onto the SAME virtual machine in Hyper-V, and if yes how to?

Suppose I already created an virtual machine in hyper-V client with Windows 8.1 install. Now I also want to install another OS (Ubuntu) onto the same VM in hyper-V alongside the already Windows OS ...
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1answer
67 views

unable to read contents of file systems

I used to own a windows-based laptop but I wanted to partition the disk for ubuntu installation. After two weeks of debugging, defragmentation and windows settings, I was still unable to partition the ...
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USB drive gets write protected after first operation in ubuntu

Inserting my drive on my Ubuntu Linux makes it write protected after the first operation (either copying or writing). The drive is normal on windows even after. I have not checked it on other Linux ...
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30 views

reroute my traffic to another adapter

My Internet access comes from my ethernet and I want to redirect it to a virtual adapter which is connected to a vpn server. I looked for answers and I'm now aware it has to do with the route rule but ...
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1answer
33 views

Ubuntu server in azure cloud: no valid sudoers sources found, quitting while restart apache

I am creating a ubunu virtual machine in my azure cloud service and installed the lampp stack and phpmyadmin. Instllation is completed without any problem and for accessing the phpmyadmin i have ...
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1answer
30 views

What problems can some 40 million small files in a single directory cause?

I would soon have a directory with some 40 million small text files in a single directory What impact will it have on performance of an Ubuntu Server system?
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10 views

Ubuntu Launcher PHP working directory

I have created a launcher for PHP: [Desktop Entry] Type=Application Name=PHP Terminal=true Exec=/usr/bin/php %f Icon=/home/virsacer/Icons/php.png When I open a PHP-file with it, the working ...
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1answer
36 views

How to reinstall truecrypt on the MBR?

I've googled this so much and can't find the answer. I had a dual booted system with a TrueCrypt encrypted Windows partition and a non encrypted Ubuntu partition (accessed with GRUB2) that was ...
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1answer
38 views

Low disk space for shrinking even after defragmentation

To install ubuntu in my windows laptop, I need to shrink my disk space into two sections, windows C drive and unspecified space. However, given my 350Gb empty space out of 650Gb in C drive, available ...
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104 views

How to disable secure-file-priv MySQL Ubuntu

Guys I have an application that use SELECT OUTFILE to be used as cache for another application, so, it outputs straight to /dev/shm/some/folder. As it runs on a background server, I have no issue ...
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1answer
82 views

Mysql 5.7 vs 5.5: simple query takes 50 times longer to run

I have a database "algebra" with a table "questions" with 1,033,990 rows. The records have an attribute 'solved' that is INT. I have a simple query select count(*) from questions where solved = 0 ...
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1answer
28 views

Not able to connect to internet in ubuntu after changing modem settings

I used to connect from broadband connection in ubuntu as shown in http://askubuntu.com/questions/100489/how-to-set-up-a-broadband-connection but then I did some changes in modem as shown in http:/...
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1answer
34 views

Cannot execute on Ubuntu

After installing this http://www.multichain.com/download-install/ I executed this command as explained here http://www.multichain.com/getting-started/ multichain-util create chain1 I got this ...
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1answer
24 views

How would I recover a crashed ubuntu instance running in VMware workstation?

I was running VMware Workstation 11.0 VM on a Windows 10 (64bit) host with Ubuntu 14.04 as guest. Last night my windows crashed and I reset my windows but all new application/software I lost including ...
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2answers
28 views

Recommended setup with 2 hd and 2 os

I have a Thinkpad T420 laptop, with 2 hard drives: SSD drive, 128GB, GPT (disk1) normal HDD, 5400 rpm, 500GB, MBR (disk2) I need to run 2 OS in this laptop: Windows 10 + Ubuntu 16.04. So, I've ...
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Why I cannot move file under Ubuntu

I followed the tut here http://www.multichain.com/download-install/ When typing mv multichaind multichain-cli multichain-util /usr/local/bin I got permission denied whereas I am logged with my ...
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LibreOfficeDev5.3 on Ubuntu 16.04 does not save modified forms

I've installed LO dev 5.3, because I need direct SQL to work, which I read was fixed in this version, but now I'm facing the issue that I can't edit any forms anymore. I can create new forms using the ...
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14 views

Port forwarding on Ubuntu

I have got a VPS server with Ubuntu. It has got a static, public IP address. Here is uname -a: Linux VPS 3.13.0-88-generic #135-Ubuntu SMP Wed Jun 8 21:10:42 UTC 2016 x86_64 x86_64 x86_64 ...
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71 views

how to mount chroot /proc on ubuntu start

In order to run java inside chroot environment I have to mount /proc file system using the following command mount -t proc none /proc inside the chroot environment or mount -o bind /proc /path/to/...
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1answer
77 views

Windows 10 linux bash shell ctrl+space doesn't set mark in Emacs

In Windows 10 I installed Subsystem for Linux Bash. But I have a problem with shortcut in Emacs Ctrl+space doesn't set mark point. What i tried and didn't help: I tried to uncheck "enable Ctrl key ...