Fifth LTS (Long Term Support) release of Ubuntu, code-named "Trusty Tahr". Released on 17th April, 2014. Will go End Of Life (EOL) April 2019. Only use this tag if your question is version-specific.

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UFW BLOCK - port blocked after allow it in firewall

Well I'm new in this things, I have been searching a solution for my proble, reset, and do it again, specify port and protocol, port in and out with a protocol, but i can't. problem: Firewall block ...
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2answers
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I permanently changed my PATH variable by mistake, and I am unable to login now. How to change my PATH variable to default?

I used sudo -H gedit /etc/environment command on terminal to permanently change my PATH variable. To correct it, I pressed Ctrl+Alt+F1, and used export PATH command but the access was denied. Many of ...
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Cant install ns-3 in Ubuntu 14.04

I have followed the instructions on this website : https://www.nsnam.org/wiki/Installation. But I havent been able to install ns3 (v3.25) in my system. The build is successful. But after I run this ...
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I tried to upgrade from 14.04 to 15.10 but failed [on hold]

I tried to upgrade from 14.04 to 15.10 but failed. What can i do now ? I am new to Ubuntu and have now idea what am i doing...
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5 views

No “Options” button in Hotspot screen on Ubuntu 14.04

I've searched a fair bit, and found a lot of hotspot setup info, but nothing directly related to my issue. I have an Intel Compute stick running Ubuntu 14.04 with the latest updates (as of last night)...
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8 views

installing ubuntu in GPU computer and connecting monitor problem

I have one computer with two NVIDIA GPU(TITAN GTX). And I have one monitor connected to the one of the GPU output connector(DVI). I installed the ubuntu 14.04 in this computer. The problem is, the ...
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3answers
174 views

How to use AND and NOT both in single grep command

I'm creating one of shell script, In which, I need to filter process except own grep process. If I use : echo "step1" psout=`ps -aux | grep 'deluged'| grep '58846'` echo "step2" echo $psout ......
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1answer
15 views

Unable to get Ubuntu working in Acer Aspire E5-573

I have managed to install Ubuntu 14.04 on my laptop using the bootable Pendrive. After the installation, It asked me to restart, when I did that, I am getting the GNU grub where It asks me again If I ...
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1answer
26 views

Installing new OS in place of existing

Laptop come with Ubuntu preinstalled. I want install Debian in place of Ubuntu. Not sure, is it better completely format hard drive when install Debian, or it make sense keep existing HDD paritioning ...
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50 views

14.04 Google chrome not starting (Aborted (core dumped))

my google chrome stopped working mysteriously. When I type in the terminal: google-chrome-stable, I got the following message: Aborted (core dumped). After I received this message, I checked ...
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2answers
26 views

“Wi-fi is disabled by hardware switch” with TL-WN722N card on Lenovo T400, Ubuntu 14.04

my builtin wi-fi card went down, so I bought TP-LINK TL-WN722N (a USB one). It worked straight away with Windows XP, but it did not with Ubuntu 14.04 as the driver was missing. I installed ath9k ...
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26 views

I want to know about package managers in Ubuntu

I have searched on internet but am unable to find complete solution of this question. What is difference between pip, npm and bower in Ubuntu and is there any other package manager for any other ...
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8 views

raid1 not assemble

I have software raid and it is not assemble when I tried to assemble it. Below I am showing output of some commands. mdadm -A -s /dev/md1 /dev/sda /dev/sdb -f -v mdadm: looking for devices for /dev/...
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2answers
25 views

Failed to install php7.0-soap on ubuntu

when I sudo apt-get install php7.0-soap I get the following errors: Err http://ppa.launchpad.net/ondrej/php/ubuntu/ wily/main php7.0-soap amd64 7.0.7-2+donate.sury.org~wily+1 404 Not Found E: ...
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9 views

sshd: segfault at 8 ip error 4 in libc-2.19.so on ubuntu 14.04

I'm using Ubuntu 14.04 and yesterday I was setup the reinstall openssh-server and setup goeip which allow/deny ssh access country wise. In /var/log/message , Continuously getting below error: $ tail ...
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27 views

Chrome is not starting with 'Error initializing NSS'

When I try to start Chrome it gives the following error: test@D1504-Ubuntu:~$ google-chrome [5701:5734:0726/112641:ERROR:nss_util.cc(744)] Error initializing NSS with a persistent database (sql:/home/...
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8 views

Ubuntu host and ubuntu guest with VMware, guest does not have network connection

My host machine is ubuntu 14.04 and guest VM is ubuntu 12.04. I am using VMware Workstation 12 Player. How do I get internet in my guest VM? I tried NAT, host only, and bridged. None of these worked.
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15 views

Boot partition size problem

I have created an ISO of ubuntu 14.04 after installing some packages by using remastersys. I tested that ISO, it was working fine. But after one month when I tried the same iso it start prompting me ...
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0answers
14 views

Ubuntu wont boot and shows busybox console

I use windows 10 and ubuntu 14.04.4 in dual boot.Recently whenever I try booting into ubuntu,it shows me this, ata1.00 SRST failed (errno-16) ata1.00 SRST failed (errno-16) ata1.00 SRST ...
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5 views

wifi disabled after suspend and ( when i just close my lappy when is working)

I recently bought a new HP pavilion 15 -AB220TX and installed (dual boot) a fresh version of ubuntu 14.04 (64bit). After installation, the built-in wifi wasn't working so i used a usb wifi stick to ...
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10 views

Installing guest to guest ubuntu 14.04 server network using static IP and internet access in virtualbox

I am installing 3 VM ubuntu server 14.04 and planning to connect each other via passwordless. I also need an internet connection for each node. I am using NAT for network adapter 1 and bridged for ...
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11 views

I can't make my pc shut down automatically since i installed ubuntu 14.04

I installed ubuntu 14.04 yesterday but after that whenever I shut down my pc a blank window appears and it dosent shuts down till i force it with the power button. Can anybody help me with this?
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7 views

Ubuntu 14.04 LTS server port forwarding

I have isc-dhcp-server installed on my Ubuntu 14.04 LTS Server. I also have a vonage phone and HP printer. When connected to my server they receive IP addresses but they cannot communicate with their ...
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1answer
23 views

Chrome browser has started core dumping on Ubuntu 14.04

I have previously downloaded and installed the Chrome (not Chromium) browser. It has worked in the past (I use Chromium as my primary browser). But today it will not launch. I removed it and re-...
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5 views

Run startx from a ubuntu docker container on ubuntu host OS, blank screen with an X icon in the center show up

I had an ubuntu docker image that have installed ubuntu-desktop package. Started it on my Ubuntu 14.04 LTS host OS (an Ubuntu VM) by command : sudo docker run -it --privileged *IMAGE_NAME* bin/bash ...
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21 views

Wifi not showing but it worked perfectly before(Ubuntu 14.04) [duplicate]

I am using HP 15-ab522tx laptop. My wifi used to work properly, but today no wifi icon is showing.It didn't even show Wireless in Network. Wireless Interface product: RTL8723BE PCIe Wireless Network ...
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0answers
15 views

Ubuntu / Apache does not want to download txt file [on hold]

I have a website (apache2, php5, mysql) installed on Ubuntu VPS. When you load the web .txt file does not download but just look, do not know how to do to, for example, when I go to localhost / myfile....
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24 views

How to fix bad boot resolution in Kubuntu

I have a fresh install of Kubuntu (no updates, no configuration beyond installer questions) connected via HDMI to a 4k TV. When I boot, I get the bios screen, then it goes black and I don't see ...
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11 views

WiFi gone after system freeze

I was browsing the Internet in chrome when my system froze, completely unresponsive. I waited an hour and checked back and it was still frozen, so I had to just power down by holding the power button. ...
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9 views

Wifi loss 5 minutes after start-up

Whenever I start my laptop, it automatically connects to my home network. It works perfectly fine for a few minutes, but after that, it just stops working. I tried pinging 8.8.8.8, and it says '...
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9 views

Octave installation after purging previous installation

I installed the octave 4.0.3 version and for some reason the command window didn't show any text. I dont know why i decided to purge the installation and start all over thinking i messed up somewhere ...
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22 views

Fresh install Ubuntu 16.04.1 unable to detect dmraid disk

I'm using a BIOS raid1 with Marvell chipset which works really well with dmraid in Ubuntu 14.04. The disk is shown as the following name with command fdisk. Disk /dev/mapper/...
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30 views

Change bash shell to look like the one on heroku demo

I am in love with the bash shell look and feel show in the intro video of heroku. Anyone has got an idea how I can implement this kind of bash look :
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0answers
33 views

Distribution upgrade from 14.04 to 16.04 hangs

I noticed 16.04.1 was available for download today and thought I'd try a distribution upgrade rather than my usual approach of fresh install. I issued the command sudo update-manager -d (Research ...
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2answers
17 views

Crontab -e command not working properly

First time I ran crontab -e it asked me to choose text editor. However I canceled command. When I run it again this is the output: $ crontab -e no crontab for root - using an empty one 888 How do I ...
3
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1answer
138 views

How to properly copy files from hard drive to USB flash drive in tty4 terminal?

How to properly copy files from hard drive to USB flash drive in tty4 terminal?(mount, copy, unmount, exit, etc) P.S.Can no exit from tty4 terminal via Ctrl+Alt+F7 command, only with Alt+SysRq+B(...
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2answers
40 views

spawn command not found on ubuntu 14.04

I'm using Ubuntu 14.04 and I want to block SSH login country wise using GeoIP ( From https://www.axllent.org/docs/view/ssh-geoip/), Please find output of command: $ spawn spawn: command not found ...
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1answer
25 views

Internet Connectivity for Ubuntu 14 in Hyper-V(Updated)

Updated I am having internet connectivity issues in my Hyper-V virtual ubuntu 14 machine Virtual Machine Internet Error Message Internet Settings in Virtual Machine 01-Internt Settings in my ...
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1answer
16 views

ubuntu 14.04 boots; login screen freezes: no GRUB menu; unable to access recovery boot mode

I'm new to Ubuntu. Ubuntu 14.04 is the only installed OS on this desktop computer. Since my last update approx. July 20/2016, I can boot but when I get to the login screen, everything freezes: no ...
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2answers
30 views

grub menu can't be dispalyed

I have installed Ubuntu 14.04 along aside Windows 10. While booting Ubuntu is not appearing instead its directly opening the Windows os. The grub menu is not found, its hidden.
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13 views

How to deploy ASP.Net Application in Ubuntu

Is it possible to deploy ASP.net applications to ubuntu 14.04? my asp.net apps was develop in Visual Studio 2010, and i'm looking to deploy it to Ubuntu platforms, is there a link that shows how to do ...
2
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0answers
37 views

X windows hanging during Ubuntu boot

I was able to figure out the cause of this problem I was having Unable to boot Ubuntu 14.04. The X server is refusing a connection. I was able to boot by pressing shift continuously and I was able to ...
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0answers
14 views

How to add Ubuntu-14.04 system in Windows domain [on hold]

I want to add Ubuntu systems in windows domain environment
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1answer
50 views

Unable to purge mysql -server

I am new to ubuntu. I am trying to uninstall mysql-server, while i'm doing it the purging process gets stuck at the line Renaming removed key_buffer and myisam-recover options (if present) and later ...
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0answers
14 views

How can I make skype detect all audio input devices?

My current skype installation on ubuntu 16.04 only detects pulse audio server as input device. How can I remove the same and make it detect all the audio input devices separately?
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28 views

can I set # of open files to be umlimited?

I am using ubuntu, but setting /etc/security/limits.conf to beyond 999999 doesn't seem to work (reverts back to 1024). Is there a way to set this to be unlimited?
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1answer
25 views

Port 8082 can't be reached in ubuntu

I have a http application running on port 8082 in my Ubuntu environment. The machine is reachable via ping. Are there any ways of allowing specific ports Ubuntu, assuming firewall is turned off?
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1answer
20 views

ATI open source driver fan running at full speed

I know this question has been asked multiple times here, but they are outdated and don't works for me. I have ATI Radeon HD2600 Pro and this GPU is no longer supported by ATI. (The driver work with ...
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19 views

Data recovery external 1TB hard disk after quick format

I was trying to create a usb startup disk, and unfortunately and mistakenly formatted my 1Tb hard disk. It was a quick format from start up disk creator software. Is there any means to just recover my ...
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0answers
24 views

whoami sudo su command not found

I have installed ubuntu as a virtual machine on my windows 10. I tried to run the commands su whoami and sudo and all these commands come up as command not found. to find the version i tried ...