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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11
votes
5answers
17k views

How do I set up dual monitor wallpaper (Ubuntu/NVIDIA)?

On Ubuntu 10.4 with NVIDIA drivers I have dual monitors setup with TwinView. How do I configure a single wallpaper to span both monitors? Right now the same wallpaper is replicated on both monitors. ...
8
votes
2answers
5k views

Merging two internet connections from two network interfaces in order to obtain double speed

I have two network interfaces (one wired & one wireless). I have two internet accounts too (each 256 kBps; one from a modem that I use as wired connection & the other from a wireless network). ...
8
votes
5answers
12k views

Why is this network connection so slow?

I am having some problems with network performance speed on a Linux server running Ubuntu 9.10. Transfer speeds on all types of traffic are around 1.5MB/s on a 1000mbit/s wired ethernet connection. ...
7
votes
1answer
1k views

Can I use and install Ubuntu packages in Debian?

I'm looking to install Linux Mint on my main work computer. Presently, I'm running Ubuntu 10.04 on it after upgrading from 9.10 (both 64bit). Previously, I have always backed up and formatted my hard ...
6
votes
1answer
22k views

How do you fix apt-get update “Hash Sum mismatch”

I have an Ubuntu 12.04 virtual box vm that I instantiate using Vagrant. git clone https://github.com/spuder/puppet-gitlab vagrant up As soon as the vagrant box runs apt-get update, I get the ...
6
votes
1answer
715 views

Automatically apply module patch and compile kernel when updated?

I've recently applied a one-line patch to drivers/bluetooth/btusb.c in order to enable compatibility with my Bluetooth device. However, whenever I get a kernel upgrade, the patch will be lost until ...
6
votes
3answers
497 views

Effect of compiling from source on already installed applications

I use Ubuntu 12.04. Say I have installed package x from the repository (with all its dependencies) at version 1.7 but I need some functionality that is only available in version 1.8, so I download the ...
6
votes
1answer
22k views

Installing openjdk-7-jdk does not update java (which is still version 1.6)

I am having issues updating Java. I am running Ubuntu 11.10. I can execute sudo apt-get install openjdk-7-jdk and it completes successfully. javac -version is 1.7, however java -version is 1.6. This ...
6
votes
3answers
807 views

Terminal change keys

Is it possible in the Unix terminal to change some of the keyboard keys? For example: when I press , then _ gets printed? If this is indeed possible, how do I go about doing that? I'm on Ubuntu.
5
votes
1answer
3k views

Gnome programs (eog/gnome-terminal) have a slow start and produce a DBus.Error.NoReply Warning

For some time eog and gnome-terminal are starting very slow on my (X)Ubuntu 13.10. I think other gnome tools are affected, too, but I don't use any else. Now I get a ...
5
votes
4answers
4k views

Prevent claiming of novelty usb device by usbhid so I can control it with libusb?

I have a USB rocket launcher that I wish to experiment with through libusb. However, libusb cannot claim the interface; presumably because the output of usb-devices lists 'usbhid' as the driver for ...
5
votes
2answers
720 views

Sync files from a mac to a flash drive - automatically?

I have a flash drive, let's name it FLASH. I want, when on my mac, when FLASH is plugged (and automatically mounted), execute a specific script and make ~/Documents to be automatically copied to ...
5
votes
2answers
9k views

How to avoid powering down certain USB devices when a machine is suspended

I'd like to maintain power supply to a USB-powered drive when the system goes into suspend (AKA S3 or "suspend-to-RAM") mode. Normally the power is cut while the machine is suspended, which causes it ...
4
votes
1answer
2k views

Run a script after lid is opened

I would like to run a script after my laptop lid is opened. is there anything like rc.local that is run after the laptop wakes up after suspending? I use Ubuntu 12 (I need it because some of the ...
4
votes
3answers
3k views

Mount NTFS Partition on Startup in Ubuntu

I have a 10 gigabyte partition which I use for files which I share between my Windows installation and my Oneiric Ocelet (Ubuntu) installation. My Eclipse workspaces exist on this partition. Eclipse ...
4
votes
2answers
1k views

How to see who is logged on to many workstations?

Before I go to work creating my own I would like to find an existing system to do the following: Provide a concise list of users logged on to any of the workstations Show workstation host name, IP, ...
2
votes
3answers
938 views

Why does the adduser command behave surprisingly?

I see various examples of how to add a user on Ubuntu server I have Ubuntu 10.04.2 LTS I was logged in as root and, when running adduser, my SSH command line asked me for both a 'new password' AND ...
1
vote
2answers
7k views

can't start x11vnc without attached monitor

I'd like to setup x11vnc (or any other vnc server) to start at boot-time. The display manager is kdm, the distribution is Ubuntu 12.04.2 LTS. When I try to start x11vnc, I'm getting this errors: $ ...
13
votes
4answers
24k views

What program do I use to check mail?

I'm receiving "You have mail" messages and according to How to remove “You have mail” welcome message I should read my mail with mail. However I cannot find the command in my system (Ubuntu 10.04 ...
12
votes
3answers
37k views

How to start a service automatically, when Ubuntu starts?

I am using Ubuntu 12.04 and want to have a service starting, when the system is booted normally. As 'service' I understand some code, for example cd my_directory; my_command -host 0.0.0.0 -port ...
11
votes
1answer
8k views

swapon: Operation not permitted

I'm running this as root, obviously. I've created a file called /swap/sw1, by dumping 512 megs of /dev/zero into it. I then ran mkswap, which said: Setting up swapspace version 1, size = 524284 KiB ...
9
votes
4answers
1k views

Use #!/bin/sh or #!/bin/bash for Ubuntu-OSX compatibility and ease of use & POSIX

I know that I can use either as the first line of scripts to invoke the desired shell. Would #!/bin/sh be recommended if compatibility with all unix systems is an absolute requirement? In my case ...
7
votes
1answer
1k views

How do I use colors in the MOTD?

I edited the default /etc/update-motd.d/00-header, adding some color to make it easier to read: printf "Welcome to \e[1;34m%s\e[0m \e[2m(%s %s %s)\e[0m\n" "$DISTRIB_DESCRIPTION" "$(uname -o)" ...
7
votes
3answers
843 views

Harddrive I/O per Pid

is there any way to see the disk I/O per pid/process ? Monitorix shows me the following and correct me if I´m wrong, but it looks like that the harddrive is slowing down the whole system: UPDATE #1 ...
6
votes
3answers
2k 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 ...
6
votes
3answers
2k views

How does one open a new window from the shell with a specific size and position?

For example, say I wanted to start gnome-terminal with it's northwest corner at 0,0, and make the window 736x434 pixels (apparently the default, which allows for an an 80-character by 24-character ...
5
votes
1answer
665 views

How to write/edit/update the OsIndications efi variable from command line?

In the need to enter the UEFI firmware setup utility while using ultra fast boot (keyboard drivers are not loaded during POST), I wish to write to the "Os Indications" efi variable. My OS is Ubuntu ...
5
votes
3answers
2k views

Performing accurate snapshot and incremental backups to a remote server

I have a few Ubuntu (and potentially RHEL) servers I'd like to back up to a central backup server (via rsh/SSH). I'd like to do both snapshot and incremental backups. The goal is that if one of the ...
5
votes
2answers
6k views

How to adjust charging thresholds of laptop battery?

My laptop is Lenovo T400, and OS is Ubuntu 12.04. I have not been able to adjust the thresholds for battery starting charging and stopping charging. I observed that its current starting charging ...
5
votes
1answer
4k views

xinerama, 2 cards, 3 monitors

I've been trying to get this right and I'm so nearly there, but not quite. This machine has an Intel adapter with one monitor, and an ATI adapter with two. I'm happy to use xinerama to get this ...
5
votes
3answers
2k views

Installation date of Ubuntu

How can I determine when Ubuntu was installed in my computer? There was a different question posted here, but none of them is helpful.
5
votes
3answers
441 views

Suspending my laptop breaks ethernet over firewire, are there commands which can fix it?

As mentioned in this question I am using a firewire cable to provide a private network between my laptop and my desktop, because it makes using the screen sharing program synergy much nicer than using ...
4
votes
1answer
535 views

Why is this static route not taking effect?

Original Question I am running Ubuntu and network manager. I have two different interfaces, eth0 and eth1. Network manager has (as far as I can tell) correctly added this manual route: ~$ ip route ...
4
votes
2answers
703 views

Simulate x-screen?

I'm working in a koding terminal running ubuntu 13.04, and I'm trying to run an application that requires an x-screen (even to run in terminal mode). I am unable to connect with x11 forwarding, and ...
4
votes
2answers
3k views

Install debug flash player in Chrome?

I am trying to adapt the instructions from here, here, and here to install the debug version of the flash player on my Ubuntu 13.04 installation such that Chrome 30.0.1599.66 can use it. ...
4
votes
1answer
3k views

nsswitch.conf versus host.conf

Suppose that /etc/nsswitch.conf file contains hosts: files dns and /etc/host.conf file has order bind,hosts then in which order the system would use /etc/hosts and DNS look-up to resolve a host ...
4
votes
1answer
2k views

The volume “boot” has only 0 byte disk space remaining

I am in Ubuntu 10.04. When I install the software updates with "Update Manager", there is a pop up dialog which tells me "The volume "boot" has only 0 byte disk space remaining" How to get rid of ...
3
votes
1answer
6k views

Run 64 bit app on 32 bit system (Ubuntu)

All the questions I've seen refer to running a 32 bit app in a 64 bit system. I'm running Ubuntu 12.04 32 bit (actually elementary OS Luna, which is based on it) and I'm trying to run a 64 bit app ...
3
votes
1answer
825 views

Ubuntu / Mint brightness 0 by default on login

Every time I boot up Ubuntu or Mint, after choosing an OS from GRUB menu, before logging in, screen brightness is set to 0. What is the reason behind that? I always end up manually turning on the ...
3
votes
1answer
725 views

Compile the Ubuntu “Raring” Kernel with the Intel Compiler

Of course, the first question is: why I'm doing this. Just for fun! I'm learning more about Linux kernels and I have a virtual machine that I can replace in 15 minutes. Getting to business, I don't ...
3
votes
1answer
4k views

How to execute a shellscript when I plug-in a USB-device

I want to execute a script when I plug in a device in my Linux machine. For example, run xinput on mouse or a backupscript on a certain drive. I have seen a lot of articles on this, most recently ...
3
votes
2answers
6k views

SSH + Sudo + Expect in Bash script: Run command with sudo in remote machine

I am trying to automate the deploy of some .deb packages with an script. I want to execute sudo dpkg -i $myDeb.deb in a list of remote machines I can access with ssh. I've tried to automate the ...
3
votes
7answers
19k views

Black screen at boot with Mint and Ubuntu live CDs

I just bought an HP pavillion g6 laptop, with the hope of installing Linux on it. I have now tried both Linux Mint (my first choice) and Ubuntu, and both simply give me a black screen from the moment ...
3
votes
3answers
9k views

Set up Grub2 to boot Freebsd using either Ubuntu tools or LiveUSB to find what partitions?

I currently have Windows7 and Ubuntu 11.04 (Natty) installed on my computer. I also made a FreeBSD liveUSB (or installer, not sure; just dded their .img to the USB stick) and installed it without ...
2
votes
0answers
459 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 ...
2
votes
0answers
5k views

Touchpad not recognized on linux (ASUS R751LB)

I have just bought a brand new laptop. Unfortunately, touchpad doesn't work on any linux distribution (tried mint Ubuntu 12.04, Ubuntu 14.04, Mint 14, Mint 16, also Mint 16 with recent 3.13.5 kernel). ...
2
votes
2answers
2k views

How to know file system of any medium like hard disk, CD/DVD, flash drive? [duplicate]

Is there any command or any way to know what file system is there on a medium like hard disk or CD/DVD or flash drive etc. From GUI gparted one can know the type on hard disks/pen drive but not of ...
2
votes
2answers
5k views

Automount not disabling in Ubuntu 12.04 or 13.04

I'm trying to disable the automounting of any usb device. I have this working in Ubuntu 10.04, but I'm trying to do the same in either 12.04 or (ideally) 13.04 but not having any luck. Everywhere I ...
2
votes
1answer
5k views

I need a step by step guide to build kernel modules in ChrUbuntu

I don't have experience building kernel modules. And worse, I'm trying to do it on ChrUbuntu, so it seems that I cannot follow the existing Ubuntu guides. For example, this command fails: # apt-get ...
2
votes
2answers
342 views

Install Ubuntu for Android

Canonical has an item on their site called Ubuntu for Android. This is a special distribution of Ubuntu which integrates with the Android system. Their website mentions that it is specifically ...