Questions related to configuration of Ubuntu software.

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40
votes
23answers
80k views

How to fix Duplicate sources.list entry?

I keep getting this warning whenever I try to run sudo apt-get update. W: Duplicate sources.list entry http://archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages ...
48
votes
6answers
93k views

How do I reset GNOME to the defaults?

I was playing around with some settings, and now I need to reset GNOME to it's defaults - how do I do that?
38
votes
9answers
60k views

How do I enable auto-login in LightDM?

I want user foo to auto-login using LightDM (which has been used by Ubuntu since version 11.10). How would I do that?
23
votes
8answers
62k views

How do I get permissions to edit system configuration files?

I can't seem to edit and save config files in the root system (eg: /etc/dhcp/dhcpd.config); it just says "permission denied" or the save option is blocked in the text editor. I'm pretty sure I'm a ...
38
votes
5answers
35k views

How do I configure Unity 2D?

There are several options to configure Unity 3D via "CompizConfig Settings Manager" respectively its "Ubuntu Unity Plugin". But how do I access Unity 2D's settings? If you are looking to ...
18
votes
3answers
55k views

Switching window manager/desktop environments?

In general what is the approach to switch the desktop environment or window manager on Ubuntu? The main difference between stock Ubuntu, Kubuntu and Lubuntu is supposedly the use of Unity vs. KDE vs. ...
32
votes
3answers
18k views

How can I restore configuration files?

I would like to restore LightDM to its default state, because for some reason /etc/lightdm/unity-greeter.conf is now an empty file. Deleting /etc/lightdm/unity-greeter.conf and then running sudo ...
6
votes
4answers
10k views

How to configure TATA Photon+ EC1261 HUAWEI

I'm running ubuntu 10.04. I have a newly purchased TATA Photon+ Internet connection which supports Windows and Mac. On the Internet I found a article saying that it could be configured on Linux. I ...
11
votes
2answers
6k views

Autoconnecting Bluetooth Devices

Is there a way to set the Bluetooth in Ubuntu to autoconnect to devices it is paired to when it is turned on. Furthermore, is there a way to automatically change the sound output to a Bluetooth ...
5
votes
2answers
7k views

How to make pulseaudio work again?

I was having problems with sound (mono only output), so following advice from another askubuntu question I made some edits in /etc/pulse/default.pa After rebooting I had no sound at all. So I deleted ...
22
votes
4answers
16k views

How can I delay a specific program on startup?

How to delay a program such as cairo-dock (No openGL) or firefox Sometimes it crashes when started with other startup apps. I want it to start 10 seconds late so it will not crash. Thank you, (I'm ...
18
votes
2answers
3k views

How can I see what happens during the boot process?

On my machine booting takes more than a minute which is annoying when I see that Windows 7 boots in 20 seconds. Here is what I get when the machine is booting. How can I see what happens when ...
27
votes
4answers
2k views

How do I configure Ubuntu for a public computer?

How would you set up Ubuntu on a computer that will be used as public computer in a library? I need the following features and user restrictions: On boot, a guest user should automatically be ...
8
votes
2answers
11k views

Reset gnome font configuration?

How do I reset the font settings - actual font and size - to their default? (I changed some values in System->Preferences->Appearance->Fonts) This is particularly important with the new Ubuntu font ...
9
votes
2answers
20k views

How do I set the correct monitor resolution with Nvidia drivers for a monitor that does not send EDID?

I keep having trouble getting the correct monitor resolution - every time I reinstall, I happen to use a newer Ubuntu release and the old tricks I used to know no longer work. Instead of leaving a ...
7
votes
2answers
1k views

How can I move the Dash button from the Unity launcher to the top panel?

In Ubuntu 11.10 the Unity Dash button moved from top-left corner to the launcher. How can I restore the Dash button to the top-corner, as pictured below
1
vote
1answer
3k views

Macbook Air - how to install a dual bootable Ubuntu 14.04 LTS

On my Macbook Air 10.9.2 without crashing the current setup, how can i install as dual boot: Ubuntu 14.04 LTS ? (can anyone please advise some step by step please)
10
votes
3answers
9k views

Re-mapping keyboard keys

I am using a keyboard with the "fn" key. This is on a laptop. So my FN + Up/down/left/right keys are mapped to brightness/volume. I would much rather them be mounted to page up/down, home/end. And ...
7
votes
2answers
5k views

How can I change the default location of content directories (eg Pictures, Templates, Music) in my home folder?

I have multiple users on my home desktop. I am content with most of the default user directories, however I would like to make one change. I would like to setup a common directory for Music (ie ...
7
votes
2answers
10k views

Where can I find a Unity configuration file?

I was wondering if someone can tell me where are the main Unity configuration files, at least the file that you can graphically configure through CCSM. I'm wanting to edit the dash size and the panel ...
19
votes
2answers
52k views

Configure screensaver in Ubuntu

How do I configure the screensaver in Ubuntu? I can see that gnome-screensaver is running.
11
votes
3answers
3k views

How to set the Default Browser from the Command Line?

Tried to set the default browser using the GUI tools but this didn't work overall. Is there a way to configure the system wide default browser from command line?
7
votes
3answers
3k views

Can I configure a transparent terminal over my wallpaper?

Can I make a transparent terminal wallpaper on my desktop? I've done this in the past but can't remember what I did.
5
votes
3answers
3k views

How can I make smaller pop-ups on Lubuntu?

I want to see smaller pop-ups but where have I to go to configure this?
26
votes
8answers
2k views

How to keep “dot files” under version control?

Etckeeper is a great tool for keeping track of changes to your configuration files in /etc A few key things about it really stand out. It can be used with a wide variety of VCSs: git, mercurial, ...
8
votes
2answers
6k views

How can I increase the mouse pointer speed beyond the limits set by the Mouse preferences dialog?

In the Mouse preferences dialog I've set the acceleration to max and the sensitivity to min and the mouse pointer is not exactly sluggish, but I'd like to make it even faster. Is it possible to be ...
8
votes
3answers
12k views

Clone internal HDD to new SSD

I recently installed an SSD into my machine. The machine itself is a Lenovo thinkpad W520, and it previously had an internal HDD. I moved the internal HDD into an expansion bay (replacing the CD-ROM), ...
7
votes
1answer
1k views

How can I set different sensitivities for two mice at the same time?

I often use a USB mouse and my laptop's pointing stick at the same time. I can adjust the sensitivity in Mouse Preferences, but the sensitivities of the two mice are so different that I cannot find a ...
6
votes
4answers
5k views

Remapping both mouse and keyboard to a gamepad

Since Halloween, I have been really enjoying Frictional Games' Amnesia on Ubuntu. My next goal is to get the other offerings they have. Unfortunately, there is not a gamepad setting for this game ...
15
votes
2answers
19k views

How can I allow SSH password authentication from only certain IP addresses?

I'd like to allow SSH password authentication from only a certain subnet. I see the option to disallow it globally in /etc/ssh/sshd_config: # Change to no to disable tunnelled clear text passwords ...
10
votes
5answers
2k views

How can I revert a config file back to the originally installed version after I have edited it?

I want to revert a file in /etc/ back to its originally-installed form. I have edited the file since it was installed. How can I revert this config file? Apt is smart enough not to overwrite edited ...
7
votes
2answers
5k views

Programmaticaly change lightdm autologin session type

I have problem with lightdm setting autologin session type (using my config tool). Lightdm logs into previously selected session. I see that autologin-session is UNIMPLEMENTED in version 1.2.1. Maybe ...
15
votes
4answers
3k views

Fixed columns' width in Nautilus

In Ubuntu 11.10 the nautilus version has a new feature, as you can see: it adapts the column's width to the content of the column itself (at least for the Name column). This behavior is not always ...
7
votes
2answers
11k views

How to disable lightdm?

I want to disable lightdm from autostart. Currenty, I run service lightdm disable from terminal, then run startx. update-rc.d doesnt help
5
votes
2answers
6k views

How do I make xinput mouse settings persistent for a USB mouse?

I use xinput to change the settings of my USB mouse: xinput set-ptr-feedback 'USB Optical Mouse' 4 1 1 How can I make these settings persistent after unplugging the mouse or rebooting?
11
votes
2answers
4k views

What is kernel configuration?

Running PowerTOP on an Ubuntu 10.10 system, one of the suggestions are Enable the CONFIG_PM_ADVANCED_DEBUG kernel configuration option. This option will allow PowerTOP to collect runtime ...
5
votes
2answers
15k views

How to enable GRUB menu on Ubuntu 12.04 server?

I have an Ubuntu server installed, and no matter what settings do I try to change, the GRUB menu won't appear. It only shows "Booting hard disk ...10... 9..." and that's all! My /etc/default/grub ...
5
votes
2answers
333 views

How can I detect and delete all lost configuration folders?

Over the time there is an increasing number of hidden .configuration folders in my home folder. Many of these come from applications I only installed for testing or from applications that I don't use ...
5
votes
4answers
4k views

Delete confirmation missing when I hit the delete key

I'm sick of accidentally deleting files and directories as DEL button is badly located on my keyboard. I would really like it if ubuntu asked me to confirm before deleting anything. Is there a way to ...
2
votes
1answer
4k views

How can I configure Gnome Shell Notification settings?

I couldn't find where I can change Gnome Shell notification settings. I clicked the button that appears with "Don't Show Again" (or something like that) label on a notification, and now when that ...
11
votes
3answers
2k views

Can I make PDF the default for 'print to file'

I am using 10.04 and I use the 'Print to File' feature a lot but it's annoying to have to change the output option to to PDF each time. Is there a way to make it the default?
5
votes
2answers
8k views

System log error when running Firestarter configuration program

Running latest Ubuntu ver. 11.04. Using Firestarter firewall configuration (ver.1.0.3). When Firestarter is run, an error message is returned, "Failed to open the system log. No event information will ...
4
votes
2answers
3k views

How to save screenshots as JPG automatically?

I want to make all screenshots I take jpeg automtically -- not png. I am using Ubuntu 12.04. Thanks a lot.
1
vote
1answer
129 views

Starting a process (sudo start) on boot up

So once I log into my Ubuntu VM I launch my application by doing a sudo app Now I want my application to get started while booting. I tried it by creating an rc. script but nothing seems to work. ...
1
vote
2answers
1k views

Why does “Purge” not remove everything related to an app? [duplicate]

Possible Duplicate: How can you completely remove a package? I have learnt that using purge command rather than remove is considered better because purge removes all files related to an app ...
10
votes
3answers
16k views

Do files at /etc/apt/sources.list.d need to have an extension '.list'?

In /etc/apt/sources.list.d I have several files for custom repositories. All the names of those files end with .list. Is it obligatory that files in that folder should end with that extension? If ...
10
votes
2answers
4k views

How to delete all the settings for Deja Dup

When I upgraded to 11.04 Deja Dup started behaving strangely, it would begin a new full backup everytime the computer was started because it was looking for a drive and folder which I had removed some ...
7
votes
5answers
1k views

Keeping multiple workstations in sync

I work with multiple computers for various reasons. I want to keep those computers in sync configuration wise. I already have a VCS based setup that allows me to manually update configurations on ...
3
votes
6answers
16k views

Can't set static IP on Ubuntu

I recently installed Ubuntu Desktop 13.10 and I am trying to set up static IP by changing the /etc/network/interfaces file from: # interfaces(5) file used by ifup(8) and ifdown(8) ...
3
votes
1answer
1k views

./configure: Mono version not recognized during MonoDevelop config

I want to install MonoDevelop 2.10 and I have cloned the current release with git clone git://github.com/mono/monodevelop.git however running ./configure I get the error: checking for ...