Ubuntu is a free open source operating system based on the Debian GNU/Linux distribution. Consider using http://askubuntu.com/ to ask questions about it.

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Can not login through “ubuntu” option but can login through “ubuntu 2D” option

My system is Ubuntu 12.04 LTS. Since updated, every time I input the right username and password and hit enter using Ubuntu entrance, I got bounced back to the log screen. But other entrances are ...
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1answer
9 views

Apt doesn’t seem to update package sources when attempting to install Mono on Ubuntu 14.04

I’m currently tinkering with Ubuntu 14.04 LTS in a virtual machine. I have been having success with getting my Samba server set up correctly and I have also set up my FTP service. So the next thing I ...
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1answer
7 views

How do I boot into Xubuntu after dual booting along-side Windows

I recently installed Xubuntu 14.04 from USB on a netbook running Windows 7. It installed fine, but before I restarted the machine, I removed the USB stick (out of habit). I couldn't shutdown the live ...
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5 views

Why is system removing working packages?

I noticed that my system (Elementary OS, based on Ubuntu 14.04) is trying to remove working packages through auto-remove. Running auto-remove makes system unusable, reinstalling packages do nothing, ...
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10 views

Mark file icons with emblems like in Ubuntu in Windows

A while ago I was playing with an older version of Ubuntu, which allowed me to mark the files with an emblem that appears on top of the file's icon. I'm wondering if I can do the same thing in ...
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1answer
19 views

Problems installing Ubuntu in VirtualBox

Whenever I try to install Ubuntu 14.04 in Virtual Box some strange codes pop up and no matter what I do. Am I doing something wrong? A few hours before I successfully installed Windows XP SP3, but ...
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1answer
10 views

How to make clicking a link in external app use running firefox profile

I use more than one firefox profile on Linux. If I click on a link in an external application, instead of opening the URL in a running browser window, I get a firefox profile manager dialog. How can ...
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2answers
20 views

ssh connection between two local computer

I'm trying to establish an ssh connection between my personal computers, connected with LAN and Wi-fi to different networks. Let's call them computer A, with Ubuntu 14.04.2 LTS, connected with LAN, ...
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7 views

Running upstart as non-root user not working in Ubuntu 14.04 LTS

I realise a similar question has been asked before but the solutions aren’t working. I think its because I'm running a multi-line exec call: script exec start-stop-daemon --start --chuid sbprod ...
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2answers
18 views

Can a Wi-Fi device be a WAP and provide internet connectivity simultaneously?

I’m working on a project where we are using two Wi-Fi dongles, one to provide a WAP and the other for connectivity. However, setting this up in Ubuntu is a royal pain. Is it even possible for one ...
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0answers
17 views

Why would we need to restart network interface periodically?

Occasionally, one or more machines in our 20-node server room here at U. Washington will start lagging, to the point that SSH connections into it takes minutes or just stall. Some high-level effects ...
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1answer
11 views

How to save matching words from output of dmesg in a list

I am connecting USB-Serial devices to my device using different ports and serial-USB devices sometimes show up as 'ttyUSB0', sometimes 'ttyUSB1' or 'ttyUSB2'. How can I write a script to extract all ...
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2answers
25 views

Ubuntu 14.04 Terminal command to find all specific file types

What is the command in the Terminal for find all files of a specific file type? E.g., all jpegs. I'm looking for a global search similarly to that on Windows/MacOSX where you can find all files with ...
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0answers
7 views

Gnome 3: when re-attaching secondary screen, why is it fuly dimmed?

When detaching my laptop from it's external monitor, lwandering around, and then re-attching it, even when it reboots, it recognizes fine that I previously set the external Monitor as primary, but it ...
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1answer
23 views

How to move cursor while clicking the touchpad?

I recently installed Ubuntu 14.10 and I really dislike the touchpad behavior. For example when I try to move a file I'm used to do it by clicking on the file with one finger and moving it with ...
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6 views

Mouse issue with Synergy and dual monitor on Linux client

I have 2 laptops, one Windows 7 machine and one Ubuntu 12.04. Both computers have secondary monitors above each computer. The Windows machine is the Synergy server. I can move my mouse to both ...
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0answers
19 views

Combine free space Ubuntu

I want to "merge" or combine a free space that i have on my main Ubuntu partition, i have tried with Gparted but i can't resize the main partition. This is the results of fdisk -l: Device Boot ...
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2answers
34 views

How to make sure that repositories added to Linux Mint are safe and secure [on hold]

I’m using the latest version of Linux mint which based on Ubuntu, I have installed many programs by adding a new repository to the list of checked repositories. Now I’m worried of how safe these ...
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0answers
8 views

Ubuntu 12.04 doesn't see the second monitor

I've got vanilla Ubuntu 12.04 lts, GeForce GTX560 and Core -i7 2600's integrated card (on desktop based on ASUS P8H61-MX). The system seems to detect NVidia videocard (lspci shows that there is ...
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1answer
20 views

tmux / screen ctrl+arrow (left right) doesn't work on SSH

I've configured tmux to skip words on Ctrl+right / left : set-window-option -g xterm-keys on It works just fine, but as I do SSH, it doesn't work and prints ;5D or ;5C.. The same issue occurred ...
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1answer
19 views

Missing WIndows 8 entry in Grub2

http://paste.ubuntu.com/10418271/ I am install Ubuntu alongside Windows8. 1) Should I setup UEFI or legacy support in BIOS setting 2) I used boot-repair but Windows entry is not showing up.
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19 views

File move issues within share - Windows 7 client, Ubuntu 14 Server

We've got a setup where files are shared from an Ubuntu 14.04 server to Win 7 clients. We're struggling with an issue moving files around sometimes. It goes something like this: Create new ...
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1answer
18 views

Can't sudo because password is disabled

So, in my attempt to prevent the default ubuntu user from logging in, and to prevent the default sudo user me from logging in with a password, and thus enforcing to use the private key, I managed to ...
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10 views

Tomcat startup failure with no error output in log that I can find

Sorry, this is long, here is a brief summary: I installed tomcat7 on an Ubuntu 14.04 VPS, it worked (serving the "tomcat was installed" page) until I changed the group owning /etc/tomcat7 to tomcat7 ...
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1answer
7 views

tightVnc Viewer: no connection could be made

I have a VPS running ubuntu 14.10, I correctly installed VNC which ran fine for one day. However yesterday when I tried to connect to my VNC using tightvnc viewer it said no connection could be made ...
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8 views

what mount points can be ro on an remote headless linux box? [on hold]

I have a linux box running headless and I can't ssh into it. It runs some binary X i wrote and occasionally performs system update by flashing a complete disk image to a backup root partition B. I ...
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1answer
10 views

SanDisk Sansa device on Ubuntu: where did the music go?

I have an old Sansa Clip mp3 player that I used to use. I dual-boot Windows and Ubuntu, and I know that the Clip works just fine on Windows and that there are a variety of questions about the Sansa ...
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0answers
9 views

How to remove entries from lsblk? [migrated]

I have an AWS EC2 instance and I tried to attach and mount couple of EBS volumes on it. Somehow mount command was taking very long time so I deleted those volumes using AWS console. Now problem is ...
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1answer
25 views

Ubuntu 14.04 does not boot from USB

I have emachines e732g, SSD with windows 7 64 and HDD, on which I want to install Ubuntu 14.04. I try to create liveusb with help Universal-USB-Installer and unetbootin-windows-608. But my BIOS does ...
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1answer
19 views

Notebook makes known for linux support [on hold]

I'm planing on buying an windows notebook, but I want to install ubuntu on it and use it as dual boot. I heard not all makes support linux, which one do?
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18 views

Ubuntu resolution not detected correctly

I recently installed Ubuntu on a dual boot with Windows, and I'm struggling to make Ubuntu detect correctly my resolution. I have a 1920x1080 screen, but when I run xrandr, I get this Screen 0: ...
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2answers
34 views

Can't install openssh under ubuntu 14.04

I am just trying to install openssh-client and openssh-server on my Ubuntu 14.04 machine. When I do sudo apt-get install openssh-client I get the following: http://pastebin.com/YJp04iin (I ...
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2answers
81 views

Java development in osx vs. ubuntu

In my job I do 60% hands on coding and the rest is divided between biz-dev and product. I've been using Ubuntu for the last 5 years and I've been extremely happy with the experience. especially when ...
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22 views

How to fix Ubuntu 14.04 suspension - abruptly suspends and after manual suspension unsuspends

I had a problem when I closed my lid the desktop did not suspend so I read this post however this did not help so what I did is to rollback now my files looks as attached below. However now I have two ...
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0answers
36 views

Incorrect CPU temp on AMD A10-7850 APU (Kaveri) on Ubuntu Linux 3.16 kernel

My machine has an AMD A10-7850K APU which runs very nicely. I installed Ubuntu 14.04 when it was released, however it launched with the 3.13 kernel which did not have official support for Kaveri ...
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1answer
19 views

How to get latest version of git?

I am running ubuntu 14.04 LTS, need to install git 1.9.5 or above. I did sudo apt-get install git then ran git --version and it shows I currently have 1.9.1 installed. Git download url shows latest ...
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2answers
38 views

How to run a script after startup on Ubuntu 14.04?

I have scoured the web and tried numerous solutions. Nothing has worked for me so far, hence this question. I have a rails application that I run with mongrel_rails start -e production -p 80. That ...
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1answer
6 views

Using ppp0 via VPN for everything but ftp

I have an ubuntu server I use to wget certain files from the internet via a VPN. I have set the VPN up using PPP0 and currently adjust the route like this: sudo route add default ppp0 Everything ...
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16 views

Ubuntu 14.04 not detecting my disks on boot

After successfully booting and running an installation from a Ubuntu Live USB, I can’t boot the new system. The initramfs /dev directory is never populated with sda and sdb, my disks. They don’t ...
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0answers
17 views

Samba: “A device attached to the system is not functioning”

All of a sudden, my samba server (version 4.1.6-Ubuntu running on Ubuntu 14.04) won't allow connections from my PCs. Anytime I try to access the server (e.g., \mydomain.com) or the specific share ...
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0answers
21 views

Block web sites for VPN clients

I installed IPSEC L2TP VPN Server on Ubuntu 12 x86 vps machine. I want to block some web sites for clients connected to VPN Server. So, changed hosts file in Ubuntu to block accessing unwanted web ...
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2answers
32 views

Installing CentOS from bootUSB with two ISO files

I want to install CentOS upon Windows 8(dual boot) replacing Ubuntu 11.04. I have two ISO files (dvd1 and dvd2). Suggest me ways to install the OS from USB. I tried using Unetbootin but it is not ...
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0answers
26 views

How to delete the 2nd bootloader created by EasyBCD and leave GRUB?

I have two bootloaders now; I have the GRUB and the EasyBCD that I've created before the Linux was installed properly. After reinstalling Ubuntu for the 2nd time, the GRUB came right, but now that I ...
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0answers
7 views

Error report when hibernating ubuntu/thinkpad

When I hibernate my laptop (Thinkpad T440p with Ubuntu 14.10 (64Bit)) it shortly blinks the following error message before hibernating. The system itself is relatively virgin. With the following ...
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0answers
15 views

Edubuntu stuck on installation

I've had this problem using multiple discs on multiple drives on this one computer. I'm trying to install edubuntu 12.04 on an old desktop. It boots to the disk, I select english and then "install ...
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12 views

chromebook with ubuntu with trusty and unity envioment

When I'm playing minecraft on my my Linux OS and hit "left ctrl + space" I like un-select from the game and my cursor reappears. Really annoying and I need some help, very inexperienced.
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1answer
40 views

Can I use “gksu” to became root for CLI operation?

I don't care if this is unsafe, because I'm only doing it as a programming exercise, but that's what I want to do: I want to create a C program that, with the "system" command, will call dpkg and ...
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0answers
7 views

Can't view videos on Ubuntu from handycam

I'm running Ubuntu 14.04, and I uploaded a few videos to my Ubuntu from an HDR-CX240 Handycam, but every time I try to view my videos, the audio only plays for a few seconds and stops, while the video ...
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0answers
14 views

Testing network application with virtual network and artificial latency

In order to test a network application in a controlled manner I want to create some sort of virtual network on a single machine in which I can control latencies. (I am running Ubuntu 14.04 x64). I ...
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35 views

Disk identifier: 0x00000000

I have a little problem with copy ISO into my Usb. If if copy a disk image downloaded from the ubuntu web site, all it's great: dd bs=4M if=Desktop/trusty-desktop-i386.iso of=/dev/sdb && ...