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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hdmi not showing up in xrandr

Everything used to work until recently. Now, whenever I connect my HDMI monitor to my laptop nothing happens. Running xrandr doesn't show the HDMI output. Can anyone help out? I've been trying to fix ...
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0answers
187 views

Bridged Networking Problem with VirtualBox

I'm running an Ubuntu Linux guest in VirtualBox on a Mac host running OS X EL Capitan 10.11, and the guest isn't connecting to the host's Wi-Fi. It's set to bridged networking, using the regular en0 ...
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1answer
82 views

Error while installing wget and unzip

I am trying to install wget and unzip on an Ubuntu machine. But I am facing the issue shown in the screenshot (dependency problems). sudo apt-get install wget unzip
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92 views

GDM is flashing and I can't login

I recently switched to Ubuntu GNOME from Windows and am very inexperienced. I was using Ubuntu fine for a while. But this morning I had trouble signing in because my login prompt continuously ...
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3answers
3k views

Get diff changes between original files installed with apt and current files

I installed php5-fpm package using apt; then I made some changes to the PHP configuration files. Now I would get the diffs between the original files versions (the ones of the package installed) and ...
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1answer
407 views

Ubuntu 15.04 PlayOnLinux Evernote can't edit notes

Just installed Ubuntu 15.04 (yes, I know that I'm a slowpoke). On Ubuntu 14.10 I was using Evernote via POL and everything was OK. Now I have a weird problem. Everything is synced. I can see a list ...
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1answer
181 views

How do I disable the usb optical mouse from Ubuntu 14.04 terminal?

I would like to disable a specific usb device (mouse) via Ubuntu Terminal. I have Ubuntu 14.04 and I tried this method and this method but both do not work with kernel 3.x. Any suggestion?
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40 views

Flash drive fat32 partition overwritten by Linux Mint 17.1 image writer - need to recover [closed]

Ah Yeah...Mint 17.2 image is written onto a Kingston flash drive (8GB) and overwritten a fat32 partition. I can take You to the moon if You tell Me that, those files aren't lost ones. ///the image ...
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1answer
111 views

Postfix is not releasing email

I got a Ubuntu 14.04 server and I am testing Postfix. My /var partition got full at a certain moment, but I could still send some emails (locally and to a different host too). Postfix accepted for ...
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3answers
42 views

Two different lists of installed packages

I'm trying to get an authoritative list of installed packages in order to find the explicitly installed ones as is done here. This command gives me one list aptitude search '~i !~M' -F '%p' ...
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1answer
329 views

Mouse and keyboard not working on Windows 8.1 after Ubuntu dual boot?

After dual booting my system with Ubuntu, my mouse and keyboard no longer work, in Windows 8.1. The light on the peripherals glows, so I know they are on, however they are just not responding. In the ...
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0answers
155 views

ubuntu 15.04 problem with typing password to decrypt the disk

I have a stupid problem after installation of ubuntu15.04 on lenovo e450. I install ubuntu with full-encryption disk option, but I have a problem. I cannot type password to this password box, but when ...
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0answers
67 views

Raspberry Pi OctoPrint server forwarding to Ubuntu VPS

I have a Raspberry Pi web server via OctoPrint which I have opened ports for to my home router so I can control my printer from anywhere. My biggest problem is my ISP keeps changing my IP address ...
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2answers
222 views

is a script a program being run under the current shell or a child shell?

I am confused with regards to the following - if I execute a script or run a program in the current shell by typing on its name it searches in the $PATH variable, to find the location of the ...
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0answers
87 views

How should I make use of Network Namespaces to access two IDENTICAL WiFi AP?

I encounter a problem when I'm trying to use a Ubuntu laptop computer to connect to two identical WiFi AP in the same time. These two AP are actually not normal AP like broadband routers, but Sony ...
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1answer
128 views

Setting up MEAN webserver in Ubuntu 14.04 vm

I'm new to the world of web servers. My lab gave me a url with a Ubuntu 14.04 virtual machine. I sorted out enough of what I needed to do to SSH in, install all relevant libraries, and clone my code ...
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75 views

program “killed” as soon as it runs

Ubuntu 12.04 I have success with make, and output a program name algo. When I type ./algo,the terminal just directly shows 'killed' And I searched the var/log/message or syslog kern.log. I don't ...
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30 views

Add new HDD to Azure VM and set RAID 0

I need to attach some hard drives to my Ubuntu Azure VM and enable RAID 0 for them to improve the performance. The new storage space will be under /home/director (for storing my host data). I have ...
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1answer
249 views

How to use grep when file does not contain the string

In my bash script I'm trying to print a line if a certain string does not exist in a file. if grep -q "$user2" /etc/passwd; then echo "User does exist!!" This is how I wrote it if I wanted the ...
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25 views

Why is Ubuntu based on unstable Debian and how is it affect stability? [duplicate]

First of all hello. I have this thought since I've seen Ubuntu is based on unstable Debian. Does this affect stability or does Ubuntu fix the issues that come from unstable Debian ?
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40 views

logdump -i<Inode#> gives partial information

I am using Ubuntu 14.04.2 (x64). While running the logdump -i<> command, I only get three lines of output for the given inode value. It stays the same, even if I use the terminal as a root user. ...
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2answers
162 views

umask permission - where it works, where it doesn't - ftp vs scp

Src = SJOAM Dest = sjoam2 Connecting to a ftp server, get a file from it. On ftp server side. [oracle@SJOAM ~]$ ls -l total.zip -rwxrwxr-x. 1 oracle oinstall 412 Aug 8 09:03 total.zip On ...
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0answers
263 views

Enabling triple-head setup with two Nvidia GT730 (Ubuntu)

After installing a second Nvidia GeForce GT730 in the hope of overcoming a single card's limitation of only being able to support two monitors, I still cannot get a 3rd monitor working. I keep the ...
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0answers
82 views

Can't install EncFS

I have a 32GB SSD in my laptop and PCManFM 1.2.0 is showing 14.5GB free at the bottom right corner of the screen in the status bar. However, when I try to install an application such as encfs, I ...
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1answer
107 views

Which NTP server should I use?

I want to set up the NTP server in my servers that are located in Frankfurt, using UTC as timezone. But I don't know which NTP server should I use. This is the result from the ubuntu ntp server: ...
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21 views

Copying video setup from Ubuntu to Debian - external monitor

My laptop has a dual boot Debian + Ubuntu installation. In particular I am using Debian 8.0 with stock kernel 3.16.0-4 (or equally 4.1.10 custom compiled, I tested it and it does not make any ...
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1answer
145 views

Ubuntu shell does not show the current path

In my Ubuntu 12.04, the prompt always show the following only (no matter what path I'm in): -bash-4.2# I guessed it is because .bashrc or .bash_profile is configured incorrectly. My .bashrc is as ...
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1answer
96 views

Restore disk image from non raid installation to RAID1

I had a disk Running Ubuntu 14.04 LTS Desktop that crashed. I have a disk image of the drive and i want to put it onto a raid 1. That's it, i thought it would almost as easy as it sounds but ...
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1answer
62 views

Failed to disable shortcut on ubuntu14.04 and debian8

I used: gsettings set org.gnome.desktop.wm.keybindings switch-applications "[]" gsettings set org.gnome.desktop.wm.keybindings close "[]" to disable Alt+Tab and to disable Alt+F4 respectively. In ...
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16 views

Is this a workable way to do the same thing as tethering on Android?

My laptop uses Ubuntu 14.04. My phone with Android 4.4.2 is limited without tethering by the mobile carrier. I have come up a thought as a workaround: find a router which can create a WiFi LAN (but ...
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0answers
93 views

Backup using find and ssh to off-site server

I'm sure this has been been answered in bits and pieces on many sites, but somehow I can't seem to get this (as a whole) to work reliably. Scenario: I have a server that I would like to do ...
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1answer
80 views

Stop a process from running on startup without removing it

Just for the heck of it I was running pgrep postgres and got a ton of results: postgres 1882 1 0 10:06 ? 00:00:00 /usr/lib/postgresql/9.3/bin/postgres -D /var/lib/postgresql/9.3/main -c ...
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1answer
90 views

Encountered “error: command 'c++' failed with exit status 1” while trying to install pymedia in ubuntu

I'm trying to install pymedia in ubuntu to run scripts using python 2.7. So, I tracked down the dependencies and got them installed : sudo apt-get install python-dev libogg-dev libvorbis-dev ...
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1answer
38 views

Mouse is frozen on one window

I am on a Linux 14.04 64 bit. Here is more info: Processor : Intel® Core™ i7 CPU K 875 @ 2.93GHz × 8 Graphics : Gallium 0.4 on NV92 My problem is that, when I'm playing an App ...
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0answers
37 views

Simple way to view who is currently connected to my AP. Linux Network-manger or nmcli

I have setup an Hotspot with Linux Network-manger. I used these instructions Fine tuning Network manager in AP mode to configure the Hotspot to to run in ap mode (as opposed to ad-hoc). I would like ...
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0answers
69 views

Help with MKV to MP4 Remux script [closed]

Overview: I'm trying to remux my mostly MKV library to MP4. I have a script that has gone through and extracted subtitles from the video files. I have another script that will remux any .mkv files ...
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2answers
52 views

Write protected pendrive [closed]

I have a pen drive with two partitions. But both partitions became read only. I tried to format. It did not happen. I even gparted to delete partition. This also did not work. Why is my pen drive ...
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6answers
15k views

Why is this python error message generated whenever I type a nonsense command?

Whenever I type any "nonsense" command, this python error message is generated. Normal commands work fine. Any idea how to debug this? $ somenonexistingcommand Traceback (most recent call last): ...
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1answer
1k views

No ttyUSB when connecting USB-RS485 to Beaglebone Black

I'm trying to connect a externally powered board to control the motors of a robot to my BeagleBone Black. I'm using ssh over USB(the mini-usb) to control the Beaglebone from my laptop. The BBB is ...
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0answers
336 views

Fine tuning Network manager in AP mode

Ubuntu Network-manager graphical front end only allows creating a Hotspot in ad-hoc mode, but does not allow setting a Hotspot in Infrastructure mode. So I have setup a Wifi AP in infrastructure mode ...
3
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0answers
161 views

Can't connect to Virtualbox VM's static IP which is in a different subnet from the hosts's IP, but statically routed to the host HW addr

I have a physical server running Ubuntu Trusty (14.04) at a data centre where they assigned one IP address, as well as a /28 block (16 IP addresses, 14 usable) from a different subnet. They said that ...
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0answers
35 views

How to determine what event is disabling Sticky Keys?

I have an ongoing problem with Kubuntu 14.10, when using the computer I find that Sticky Keys is suddenly disabled. I reenable the feature, but in after some time (measured as three minutes to days) ...
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0answers
62 views

Access from Fedora 22 to Ubuntu Mate (Raspberry PI Model B) with xrdp it work's but I have no Sound - How I can get sound to my Raspberry PI Model B?

I have searched over hours but I find no solution I hope here I get help to make sound from remote machine to my raspberry pi possible. Remote = Fedora 22 Local = Ubuntu Mate on Raspberry PI 2 model ...
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0answers
48 views

Folders and files lost from Desktop

All my folders and files were lost from my Desktop yesterday. I can not find them. I wanted to have two Firefox profiles on Ubuntu 14.04 so I followed this tutorial. After I run Firefox profile ...
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0answers
30 views

variable bandwith on network interfaces by testing from iperf tool:

I am using iperf tool to benchmark my network interfaces on two identical machines (Dell Blade Server M620). Both have given different results. On 1st machine, I ran server and clients as: Server ...
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2answers
598 views

Linux - Log What Username and Password Was Tried

I am using Ubuntu Server and I am curious if there is anyway to log what username and password a potential attacker has tried. I can grep /var/log/auth.log and see all the failed attempts but I would ...
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1answer
156 views

Ubuntu GNU/Linux AMD graphics card issue

when I bought my dell laptop, it came with Ubuntu 12.04 lts, but I removed it and installed windows 8.1 (now 10) on uefi my story is: whenever I install any debian/Ubuntu distro, I use the open-source ...
4
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1answer
60k views

How to use Wireless Network in Virtualbox?

I'm trying to enable Wireless on VirtualBox in my Ubuntu 14.04. I use a Kali Linux as the guest OS, but this OS not show the wi-fi when I connect it. After starting the guest OS, it still does not ...
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1answer
2k views

ssh error bash: 22: command not found

I am pretty new to unix, so please bare with me... when i try to connect to my server running ubuntu server through terminal on my ubuntu workstation I get this error: bash: 22: command not found ...
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0answers
77 views

Unable to login from greeting screen (Ubuntu 15.04)

I am unable to login to my main account (xyz) on Ubuntu 15.04. On entering the password it waits for a while and then says incorrect password. However I am able to login from the tty1 shell for the ...