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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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 ...
2
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1answer
49 views

CUPS Error Printer is not Responding

I've purchased generic USB POS Receipt Printer and on supplied mini CDROM I've got driver installation scripts (binary) for 32bit and 64bit Linux. Since I am working on 64bit Ubuntu 14.04.3 LTS with ...
4
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1answer
727 views

How to set LANG in locale, despite it's in /etc/default/locale in ubuntu for unicode support?

I run Ubuntu 12.04, I can't set the locale to en_US.utf8. I set the LANG by configuring /etc/default/locale as described here. $cat /etc/default/locale LANG=en_US.utf8 $locale LANG= LANGUAGE= ...
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votes
1answer
16 views

How to send all keystrokes to a screen session?

I am starting a screen session with screen /dev/ttyACM0 115200. The system I am opening a session to is running Ubuntu, and I would like to pass it Ctrl-Alt-F1. How can I make screen capture those ...
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0answers
58 views

can't get bluetooth to work from a Ubuntu 14.04 LTS derivative running Linux Mint 17.3 “Rosa” MATE Desktop

dmesg | grep -i blue resulting output from code above is the following [ 31.686537] Bluetooth: Core ver 2.20 [ 31.686599] Bluetooth: HCI device and connection manager initialized [ ...
1
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1answer
6k views

How to fix error 'xrandr: cannot find output “VGA1”'?

I am trying to enable a HDMI connection to a monitor connected with a HDMI cable to my Lenovo laptop using the following commands. > xrandr xrandr: Failed to get size of gamma for output default ...
3
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2answers
422 views

BASH: �ls: command not found when typing 'ñ' by mistake

When I erroneously type 'ñ' (expecting to type any command) and then remove it and type the correct letter, the output returns the command with a special character attached �, obviously the shell ...
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0answers
12 views

KDE 5 plasma desktop slow filesystem operations

I have KDE 5 and Plasma Desktop, Kubuntu 15.10, and there is one annoying thing: file operations works very strange. If I'm removing some file first time until system was power on, KDE starting to ...
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1answer
33 views

Why isn't ext listed for file system types supported by my kernel?

I follow the reply here to list the types of file systems that my kernel can support. Why doesn't ls /lib/modules/$(uname -r)/kernel/fs list ext? My Ubuntu uses ext4 file systems.
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0answers
34 views

Autostarting .desktop application at startup not working

I have read that adding a .desktop file to /etc/xdg/autostart can start an application at startup. I did the same to execute my application. But nothing happens on startup. Following is the content of ...
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0answers
36 views

Ubuntu Server: How to make bootable bios_grub RAID device?

I have a stable Ubuntu (14.04.3) Server-powered file server that I have set up, and want to set up a RAID10 array for it. For reference, I have been following this guide so far, but using RAID10 ...
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1answer
830 views

Installing ruby 2.1 on Ubuntu 12.04 using ruby-install application

I've been through a couple of tutorials on how to install ruby 2.1.* My system currently has ruby 1.9.3 and I want the latest one. I'm following the following tutorial on how to install it from here: ...
3
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1answer
2k views

Need to auto-login after logout on ubuntu

I've set up a kiosk using Ubuntu 12.04, and I'd like to have it autologin after a user logs out or if the screen locks, in case someone manages to get back to lightdm or tries to login to the ...
2
votes
1answer
654 views

nmcli freedesktop DBus warnings and errors

As soon as I do nmcli con up id <ESSID>, I experience some warnings/errors: ** (process:4841): WARNING **: async_got_type: could not read properties for ...
0
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1answer
52 views

Ubuntu 15.10 Network Interfaces Name

I have just installed (fresh-installation) over VMware Workstation 10 an Ubuntu 15.10 64-bit virtual machine. Here, network interfaces names have been changed from 'ethX' to 'enXXXX'. My target is ...
1
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1answer
36 views

ElementaryOS not recognized by Grub2

(The hyperlinks are pictures I took) I had Windows10 installed in my computer (which is a Lenovo Z70) and I installed ElementaryOS but Grub2 is not recognizing the OS, actually none of them. If I ...
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2answers
37 views

ssh linux to mac inside and outside lan

Hi this is my first post and I was wondering if anyone can help me? I have ubuntu on my home pc and I want to be able to ssh to a macbook. When they are both on the same wifi network it's no problem, ...
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3answers
747 views

Hide all open windows on Ubuntu 12.04 LTS

Is it possible to have a button on the side bar to hide every open window on Ubuntu 12.04 LTS?
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0answers
21 views

Most efficient for multiple distros on one machine

My laptop – which is my main everyday computer – is currently dual-booting Win10 and Ubuntu 14.04 (though I almost never use Windows). I recently tried out a USB boot stick of the live ...
0
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1answer
26 views

Auto mounting external hard drive not working

so I'm trying to mount my external hard drive automatically on my server running Ubuntu 14.04. I've tried editing fstab directly, I've tried gnome disks and I've tried Usbmount. None of them work ...
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0answers
34 views

Disable isc-dhcp-server form startup

I am working with isc-dhcp-server on ubuntu 14.04.1, and i don't want that it run on start up so I disabled it from rc with sudo update-rc.d -f isc-dhcp-server remove But it still run on startup, I ...
0
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1answer
13 views

Installing Linux as the primary OS on HP Pavilion DV-7-1225-ez

I have an old entertainment laptop, HP Pavilion DV7-1225ez, which I would like to turn into a portable development/learning computer. I am now going through various linux distros to find the most ...
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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 ...
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3answers
6k 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 ...
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0answers
34 views

How to install ubuntu on live USB stick that I booted from?

I have a old netbook with single USB port and broken harddrive. I've somehow aquired a 16gb lubuntu 15.10 willy live USB. I want to use this as primary OS on my netbook. Since I don't have access to ...
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0answers
27 views

Installing Ubuntu and PostgreSQL database on different drives

I just received a new root server with the following drives: Disk /dev/sda: 480 Gb Disk /dev/sdb: 480 Gb Disk /dev/sdc: 240 Gb This one: ...
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0answers
12 views

LXLE defaults to non-graphic UI on boot, cannot launch LXDE

I installed LXLE (latest ubuntu LTS version w/ LXDE) on an old laptop. During the live session and installation, the GUI worked fine. During installation I chose "automatic login" and upon first boot ...
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0answers
35 views

set up UPnP/SMB on Ubuntu?

I have a Ubuntu 15.10 machine and I want to use my Desktop to stream videos from my laptop to my iPad in VLC, which is possible when my PC is booted into windows, I would like to do the same in ...
1
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1answer
32 views

Map F2 to replace the 2 key – also with Shift and Alt combination – in Lubuntu 14.04.3

I run a Danish keyboard layout in Lubuntu 14.04.3. The 2 key is malfunctioning (hardware problem). I wish to replace its use by the key F2. The F2 key value (i.e., the F2 key-press event) will then ...
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0answers
27 views

Is “<command> &” same as demonizing a process in Linux? [duplicate]

We all know that any command succeeded by ampersand (&) makes it run in the background. Can we use it instead of demonizing tools? For example: In order to run nodejs server, we use use packages ...
2
votes
3answers
3k views

Permission denied (publickey,gssapi-keyex,gssapi-with-mic)

Ok, so I have tried this quite a few times and I'm sure this is very trivial but: I am trying to SSH via command line on Ubuntu into my VM (Centos6) with an RSA key-pair I created using key-gen. I ...
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0answers
16 views

Newest, unstable version of Ubuntu somehow appeared in my sources.list

I used to use Ubuntu Trusty, on last Friday I started an "apt-get dist-upgrade" command. And it was a disaster. Almost everything stopped working. It appeared that it tried (and failed) installing ...
3
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1answer
87 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 ...
1
vote
1answer
869 views

Make bluetooth device invisible / disable incoming pairing

I am using the bluez package for my bluetooth usb dongle on ubuntu server. I want to be able to initiate bluetooth connection from the dongle to a device, however a device itself shall not be able to ...
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2answers
1k views

Ubuntu 15.04 desktop frozen after login

I have just done a fresh install of Ubuntu 15.04 Server. After I log in, I see the dash and after a while just a black screen with the cursor on it. I have updated my nvidia drivers (sudo apt-get ...
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0answers
15 views

Why I am not able to bind the interrupts with code LOC, IWI, RES when irqbalance is disabled?

On Ubuntu 14.04, I am trying to bind all the interrupts to core 0 and 1 out of 4 cores. I have disabled the irqbalance daemon via file /etc/init/irqbalance.override. Then I went to every interrupt in ...
7
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2answers
22k views

Set Ubuntu System Proxy Settings without Restart from commandline

I am using Ubuntu 14.04 . I want to change the http proxy settings from the command line. This should be equivalent to changing in the GUI(All Settings->Network->Network Proxy) and clicking the button ...
1
vote
1answer
34 views

Is Ubuntu “spyware” in the others *buntu too?

I have recently discovered about the "spyware" Canonical has put in the search bar in Unity. Although it is easily turned off, it is very unpleasant to use a system that did that. Since Xubuntu, ...
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0answers
21 views

Does ubuntu touch / tizen offer fullscale pc level command line programs and options?

Android doesn't include full scale PC like command line experience. None of the GNU/Linux command line packages directly run on Android. Few have been ported but vast majority are unsupported. ...
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1answer
1k views

XBMC crash after selecting “play”. Ubuntu 14.04 and 13.0 gotham. Link to crashlog

I have a brand new machine with fresh install of Ubuntu 14.04 and I'm trying to run Gotham 13.0 on it. I've already added the restricted multimedia codecs (just in case) to Ubuntu. sudo apt-get ...
3
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2answers
32 views

What is Debian's equivalent of do-release-upgrade?

Ubuntu has do-release-upgrade. What is Debian's way or tool for the same purpose?
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0answers
17 views

No file is shown after boot. What should I do?

I have Ubuntu 15.04. Yesterday, after boot, nothing is shown, no file, no task bar and I can't do anything but entering the text mode (Ctrl+Alt+F1). On text mode, I can enter root mode and list all ...
1
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1answer
44 views

udev creates the right rules, but rights disappear as soon as I try to access files via C++

I'm facing a really strange problem using udev. As I already explained here I'm trying to access some folders/files as a no root user Here are my udev rules for the gpio folder: KERNEL=="gpio*", ...
3
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0answers
39 views

How to create a Music Mix video with kdenlive?

I am trying to use kdenlive (0.9.10) on Ubuntu 14.04 to create a simple music-mix clip (for youtube). This clip has a total length of about 90 minutes and is composed of several mp3 tracks, which ...
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2answers
3k 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 ...
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0answers
20 views

How to setup audio from for lubuntu minimal install

Running a very stripped down lubuntu 14.04LTS x64 install. I installed xorg and openbox and was up and running! but I can't, for the life of me, seem to get any sound. I installed alsamixer pulsaudio ...
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0answers
15 views

Keyboard works in default Ubuntu desktop but not Openbox

I've got a Thinkpad Carbon X1 (the one with the annoying adaptive keyboard) which I've installed Ubuntu on because of it's support for all the hardware on this laptop. However, I don't like the ...
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3answers
1k views

Installed Linux, now Windows doesn't boot anymore

I had a working Windows 8.1 which I used regularly. Today I needed Linux, so I chose Ubuntu and installed it from a bootable flash drive alongside Windows. Everything worked well, I could choose which ...
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0answers
4 views

Problem in booting from ubuntustudio DVD

I am new here, kindly help. On booting from Ubuntustudio 15.10 32bit DVD. It stop by giving copyright line and after sometime EDD error. I tried booting from Fedora23 32 bit DVD, from which I ...
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0answers
25 views

GNU grub version 2.02

I have double boot running windows 8 and mint. Today when i started pc , it did not asked me which system i wanna boot but instead throw GNU GRUB Version 2.02~ beta 2-9 Minimal BASH-like line ...