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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Why does my cursor disappear in Ubuntu Linux, but appear again when closing it for a minute?

I have a problem with my mouse in ubuntu. The cursor disappears sometimes and I can't do anything but close my laptop for a minute, after which the cursor will appear again! What should I do with ...
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Unable to mount 2Tb ntfs hard drive in Ubuntu 14.04

Can somebody assist me on this one? Error mounting /dev/sdg4 at /media/jote/DATA_4: Command-line `mount -t "ntfs" -o uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177" "/dev/sdg4" ...
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Ubuntu doesn't boot after fsck on /

I had this problem with Ubuntu when it boots: http://askubuntu.com/questions/392720/the-disk-drive-for-tmp-is-not-ready-yet-s-to-skip-mount-or-m-for-manual-recove The problem appeared from nothing, ...
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1answer
19 views

Run sed as a one-off ssh command

I would like to substitute a string with another in a file on a server of mine. I've tried doing this: ssh $REMOTE_HOST sed 's|export ${KEY}=${VAL}|export ${KEY}=${NEW_VAL}|' "$ENV_FILE" And a ...
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Running supreme commander forged alliance in dual monitor mode

I have ubuntu 14.04 64bit with wine 1.7 I installed FA via steam on wine and FAF as well. both run decently although, FA does not detect my second monitor. is this something wine is incapable of ...
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16 views

Can't write files using new user on Linux Ubuntu via SSH

So I just added a user to my server, let's call it "user2", when I tried uploading a file via Filezilla while logged in to "user2" I got the error open for write: permission denied, so I assume ...
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2answers
38 views

Not able to dual boot windows 8.1 and ubuntu

I installed ubuntu in a laptop already installed with windows 8.1. But while booting it does not give an option to boot into ubuntu. So I tried with easy bcd. The boot menu is not showing ubuntu. So I ...
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Google Chrome crash the whole system on Xubuntu 14.04

I have been using Google Chrome with Hardware acceleration with no problem and very good results on my Xubuntu 14.04 Dell Latitude E6440 with Radeon GPU. Lately, (probably due to some "System Update" ...
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Sublime Text 2 remapping keys

I'm using sublime as my main text editor and I am remapping my arrow keys from the arrows to alt+i, alt+j, alt+k, and alt+l. I have noticed that on Ubuntu 14.04 after I remap my keys that when I ...
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18 views

Unlocated Space cant be used for other partitions

So some weeks ago I installed the latest Ubuntu Os version in my pc, I gave it like 12g and then 4gig for the hybernation temp storage. Yesterday I realized that I wasn't going to use it anymore so I ...
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10 views

Detect spambot on ubuntu 12 TLS

Recently I discovered in my mail log that there is an enormous amount of spam being sent from my home server. I am running no websites, just zpanel. I closed down all the ports and am monitoring the ...
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1answer
14 views

Where I can find a repository for an old version of Ubuntu [duplicate]

I am using raring and just noticed that I can't install packages any more (404). I checked a couple repositories and raring is not there. Turns out it's been EOL'd, at barely 10 months old, it seems a ...
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22 views

What is causing my computer to be slow all of a sudden? New version of Firefox/Ubuntu? Script error? Old computer?

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete. When the above shows up, I click continue ...
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2answers
22 views

Acer Aspire 7741Z cannot install Windows

I have an Acer Aspire 7741Z that crashed on me and I had to replace the HDD. I didn't have a Windows disk to use for install so I installed Ubuntu. It works, it boots, everything is fine. Now I ...
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1answer
13 views

Mounted drive changed mount point after motherboard change in Ubuntu 14.04

I changed chassis and switched motherboards from an Asus Z87I-Pro to an Asus Z87-Pro - essentially the same except for form factors. While switching, I made note of how the hard drives were connected, ...
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1answer
22 views

ssh authorized_keys permission denied only until file is listed/stat'ed - VERY STRANGE

Ubuntu 14.04LTS running openssh. I'm getting a Permission denied (public key) when I try to ssh in using my public key. /var/log/auth.log shows "Could not open authorized keys ...
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how to create ubuntu installable iso image from files

this might be a quite silly question but I lack linux knowlege so here it is... I have an ubuntu VPS from which I need to create a development environment under my WMWare. So I wonder if the ...
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8 views

Install measuremet lab's command line client on ubuntu(Linux) for speed test

Is there any script or simple way to install ndt on Ubuntu. Installation process on site says that we have to patch w100 file to kernel and much more which is too complex so I am in search of simple ...
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21 views

How to install top & htop on Ubuntu 8.04.2 LTS (hardy)

Env. Rackspace Ubuntu 8.04.2 LTS (hardy) I am in a corner situation where I need to maintain carefully a legacy server before I can plant for an upgrade. Actually an upgrade is not an option, I ...
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12 views

Can I make my psp memory stick bootable using ubuntu(rather than cmd on windows) and then using it to install windows 8?

After installing ubuntu 14.04 I began to miss all the things I liked doing on windows(gaming, sony vegas etc) I don't have any disks but I heard it's possible to boot a psp memory stick using cmd on ...
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1answer
28 views

How much RAM should I put aside for ubuntu virtual machine

I currently have windows 8 in my laptop with 4 gb RAM.. I recently installed the virtual machine of ubuntu. Now I need to run a tool whose memory requirements are as follows : 1) Atleast 5 gb RAM 2) ...
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1answer
38 views

Docker “hello world” example doesn't work. “no such file or directory”

I'm totally new to playing around with Docker(.io) so I've just been RTFM'ing the main site, and hit a problem early on with their example "Hello world". It seems like a few other folks have had the ...
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1answer
23 views

ubuntu superuser got corrupted

I was trying to save times to type password for sudo because one of my scripts had to be randomly repeated quite often. I googled some information about how to bypass typing password and applied to ...
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1answer
12 views

LightDM accepts password once, and never again

I'm running Ubuntu 14.04. Fresh install, although I'm pretty sure I'm going to need to reinstall after this problem is resolved. When I first start Ubuntu, I get the LightDM login screen. That ...
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39 views

apt-offline still fails on Ubuntu 14.04 as of 2014-07-24

One of the answers in Debian: updating package lists with apt-offline, --simulate not understood for apt-get update mentions that the issue was fixed in Ubuntu 14.04. However, on my Ubuntu 14.04 ...
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1answer
15 views

Ubuntu: Keyboard language switching by Ctrl+Space

Don't ask me why but I want to switch between keyboard languages (I'm using US/UA) by pressing left control + space. I don't see this key combination in the appropriate settings, unfortunately. ...
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3answers
17 views

SSHing into a Ubuntu VM instance

I have an Ubuntu VM instance running on my laptop. Both Host and VM run the same OS - Ubuntu 12.04. I tried to ssh from host like ssh username@<VM-IP> It tries for some time and then says ...
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1answer
19 views

Hook into “command not found” handler in Ubuntu

I want to hook into the handler for command not found wim@SDFA100461C:~$ thing No command 'thing' found, did you mean: Command 'tping' from package 'lam-runtime' (universe) Command 'thin' from ...
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2answers
27 views

Accessing or sharing files over dual operating system using a single partition

Ubuntu supports ext4 file system. While windows support NTFS and FAT32. Now my problem is I have songs folder which is full of songs. I have unallocated space left too (if more partitions are ...
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10 views

Pidgin auto-reconnect

Using Pidgin 2.10.6 (libpurple 2.10.6) 4cfe697ea3ae39a4fb3dad8e3ed1c70855901095 On Ubuntu 12.10 (yes I know this is out of support) From time to time Pidgin will disconnect from a network. This ...
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JVM exception, server not responding, cant kill process with PID

My server did actually hang , now via ssh i cant kill the PID , or screen -x => hit 'stop' Java HotSpot(TM) 64-Bit Server VM warning: Exception java.lang.OutOfMemoryError occurred dispatching ...
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11 views

Can't shrink partition any further

I'm running Windows 8.1 32-bit and I want to install Ubuntu 14.04 (LTS) and I made another partition with 15.9GB and I only have 310MB left and I want to extend my partition to a few extra GB's but I ...
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37 views

What's faster: Running a Windows virtual machine on Linux or running a Linux VM on Windows? [on hold]

I've searched the internet for this and I don't think I've been able to phrase the question concisely for any search engines, so I'm turning to people! I've got a laptop and I would like to know what ...
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Cannot open 2 USB cameras simultaneously on VLC player Ubuntu 12.04

Cannot open 2 USB cameras simultaneously on VLC player Ubuntu 12.04 How I open a Camera: In terminal (text after the $ prompt = commands that I type): $ ls /dev/video* /dev/video0 /dev/video1 $ vlc ...
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How could PC Doctor, etc. boot and how does the HDD mess up offline boots? [on hold]

We finally gave in, and gave the laptop to Staples. Apparently, the Staples tech ran "PC-Doctor" and tested a lot of hardware, eventually finding (via SMART) a hard disk failure. He said it was a ...
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Internet does on connect on Ubuntu as Virutalbox guest on Windows 7

I have ubuntu 12.04 running on virtual box on Windows host. I have been using it for last couple of months and internet was working absolutely fine until couple of days back. The internet speed within ...
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1answer
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Drive assignments changing

I have an Ubuntu 14.04 Server machine set up with 3 drives: Two 2TB HDDs, and a 4GB USB drive for system. It seems that every time I boot the system it changes what drives are assigned to ...
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Best practise for debbuging hdd

I just logged onto my machine when suddenly ls gave me an Input/output error. After rebooting the machine /dev/sda1 could not be mounted. dmesg results in : [ 545.691453] EXT4-fs (sda): VFS: Can't ...
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1answer
22 views

problematic listing of folder with many files

In ubuntu I have a folder that contains many (~10M) .txt files (around 1-2KB each). Folder is not big by itself (around 400MB) and does not contain subfolders, just the .txt files. I need to list it ...
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How to dual boot Windows 8.1 and Ubuntu 13.04 with Windows Metro Boot Loader

I'm having a laptop with 4 Partitions, [1] 350 MB Windows System Reserverd [2] 40 GB for Windows Installation [3] 25 GB for Ubuntu Installation [4] 400 GB for Data Storage I have installed Windows ...
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printing in window 7 client using Ubuntu print server

I want to share a printer under Ubuntu 11.04 with Windows 7. I have installed samba and configured it to allow the printer to be browsed across the network. I have also enabled printer sharing. But ...
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1answer
32 views

Unable to install Windows after installing openSUSE and Ubuntu

I had a Windows machine then I decided to try openSUSE so I burned into a USB and I was presented with a long list of partitions and stuff. I deleted EVERYTHING and it seems I messed up the ...
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1answer
14 views

Extending LVM partition on Virtualbox/Ubuntu

I stupidly created a dynamic disk when I created a VM. The disk has been converted to Fixed and the size upped to 20GB. I booted into a GParted live CD and extended the partition up to the maximum. ...
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1answer
23 views

Port Forwarding with the real IP-address

How to implement port forwarding, so that would be displayed on the host real IP and non-IP machine, as it comes with SNAT DNET with IPTABLES The scheme is about the The machine-HETE with IP ...
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15 views

Cannot import .ova

I'm trying to import an .ova file into my VirtualBox on Ubuntu 12.04 (64 bits), but when I do this I get the following error: Failed to import appliance /media/USB/Respaldo 11 (Armando)/SW/Maquinas ...
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31 views

Booting Windows 7 Installer from USB Samsung Series 5

I have a Samsung Series 5 laptop that came with Windows 8 Pre-Installed and a bunch of manufacturer stuff i didn't want. I cleaned the DISK and installed ubuntu 14.04. Now i was trying to install ...
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1answer
19 views

PPTP server not functioning (or set up) correctly

I've set up a PPTP server on Ubuntu Sever 14.04. I need to allow a foreign client to access the LAN, but NOT attempt to use my internet connection. When connecting to the VPN the client loses internet ...
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1answer
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remotely boot into different kernel version

I have a remote machine with Ubuntu 12.04 and the following kernel versions installed: :/lib/modules# ls 2.6.39.4 3.0.0-21-generic 3.2.0-25-generic 3.2.0-25-generic-pae 3.2.0-27-generic ...
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1answer
14 views

exiting current terminal in a script

I have made alias for running certain program and i have put it in .bashrc file. I want to close current terminal inside the script. I've tried this but it is not working. alias mp='java -jar ...
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Terminal across two Monitors

I have two 24" Monitors connect to my Ubuntu 14.04 LTS. For some purposes it would be helpful to maximize my Terminal over both Monitors as one big Window. I can drag a window larger with the mouse, ...