Greatest Hits

10
votes
2answers
90k views

“Unable to locate package” errors for all software

My apt-get doesn't install any programs. I try to install programs with apt-get install but always it shows same error: unable to locate package. For example I try to install the xbmc media center; ...
12
votes
6answers
27k views

php is not working well on ubuntu 13.10 and mcrypt is missing in phpmyadmin

I've upgraded from UBUNTU 13.04 to 13.10 but I can not work with php pages or phpmyadmin . I've tried this way to install lamp on ubuntu sudo apt-get install lamp-server^ phpmyadmin and I've done all ...
34
votes
7answers
84k views

How to install Dropbox?

For some reason installing Dropbox via software center does not work. I get a message that sends me to Dropbox website where I follow the instructions. But at the end it says it says: Next, run ...
23
votes
5answers
57k views

How do I create a WiFi hotspot sharing wireless internet connection (single adapter)?

I know how to create a hotspot when connected to a wired network, but when I am using internet from a WiFi connection, this disconnects the wireless connection the moment I activate the hotspot. In ...
57
votes
15answers
56k views

What hardware does Ubuntu Touch support?

With the announcement of the Ubuntu Phone OS I'd like to know what phone (and tablet) models are supported at this time. Note from foss & Oli: We are making this the master question for all ...
12
votes
2answers
40k views

How to install the MPEG-4 AAC decoder and the H.264 decoder?

Where do I get the MPEG-4 AAC decoder, and the H.264 decoder. How to install them and play the multimedia?
25
votes
4answers
68k views

Unable to correct problems, you have held broken packages

After upgrading from 10.04 to 12.04 I am trying to install different packages. For instance ia32-libs and skype (4.0). When trying to install these, I am getting the 'Unable to correct problems, you ...
58
votes
5answers
83k views

How to add a PPA on a server?

The Server version of Ubuntu does not have the add-apt-repository command. How can i add a PPA to the server without this command?
144
37
votes
4answers
92k views

How to set the fully qualified domain name in 12.04?

I tried adding dns-domain domain.com to /etc/network/interfaces with no luck. When I run hostname -d I get an empty string
40
votes
4answers
85k views

What is the equivalent of 'Control-Alt-Delete'?

On Windows anytime the system hangs Ctrl-Alt-Del brings up the Start Up Manager, from which you can end the program or process causing the hang. Is there any command like this on Ubuntu?
7
votes
3answers
74k views

How to install Ubuntu on the Samsung Galaxy S3?

I have read about this on XDA Developers, the articles were a few months old though. Is there an official guide from Ubuntu on how to do this?
99
votes
12answers
101k views

How do I change fonts and adjust their size?

I've been finding fonts on the internet and installing them on my system. What's the easiest way to change my fonts? I would prefer an easy to use graphical way, but answers with command line ...
136
22
votes
1answer
19k views

Ubuntu 13.04 to 13.10: Filesystem check or mount failed

I attempted to upgrade from Ubuntu 13.04 to 13.10 today, and mid upgrade the system started flaking out, and eventually locked up entirely. I was forced to restart the computer, and am now unable to ...
257
votes
10answers
171k views

What are PPAs and how do I use them?

I keep reading about Personal Package Archives ('PPAs') and people answer questions with a link to a PPA. What's the best way to use these? There are multiple valid answers for this question ...
87
49
votes
9answers
131k views

How to make a disk image and restore from it later?

I'm a new Linux user. I've reinstalled my Wubi from scratch at least ten times the last few weeks because while getting the system up and running (drivers, resolution, etc.) I've broken something (X, ...
108
10
votes
4answers
60k views

trying to overwrite '/usr/bin/opencv_haartraining', which is also in package libopencv2.3-bin 2.3.1+svn6514+branch23-12~oneiric

After installing some packages and libraries I have an error on Package Manager, I can't run any update because it says: The package system is broken If you are using third party repositories ...
43
votes
7answers
46k views

Skype and VLC sounds sizzle/distorted/bad

I have the same problem as described in the questions skype notification sounds sizzled and bad sound on login to skype. But it is not only the login, notification, but also when talking to somebody. ...
26
votes
9answers
78k views

'apt-get' does not work with Proxy

For the command sudo apt-get update I get following error: W: Failed to fetch http://ch.archive.ubuntu.com/ubuntu/dists/maverick-updates/multiverse/binary-i386/Packages.gz 407 Proxy ...
150
38
votes
1answer
63k views

How do I update Oracle Java 7 (JDK and JRE)

Recently, I've installed JDK 7 from the Oracle site, using these instructions. Now, I'm wondering what is the correct method to update it (or, better, to keep up-to-date automatically)? For instance, ...
35
votes
5answers
90k views

Command-line to list DNS servers

Is there a command to list dns servers? I tried $ cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR ...
21
votes
4answers
74k views

How can I install a .bin file?

I want to update Acrobat Reader for Firefox, but the download has the .bin extension. How can I install it?
122
votes
2answers
131k views

How to enable TRIM?

I know that the Linux kernel supports TRIM as of version 2.6.33, so there should be TRIM support in ubuntu. Is TRIM enabled by default or do I need to change some settings or install additional ...
105
11
votes
6answers
83k views

How do I disable the “Nouveau Kernel Driver”?

I'm trying to install proprietary nvidia graphics driver I downloaded from nvidia website. It will not install because it says that the "Nouveau kernel driver" needs to be disabled first. I opened ...
109
13
votes
7answers
86k views

How do I convert .ts files into something useful?

I have a file that ends in .ts, which according to wikipedia is an MPEG2 file. I've never run into a file like this so I want it want the file to be in a more common format/container to use on ...
5
votes
1answer
11k views

Ubuntu 14.04 not booting after error message. /tmp could not be mounted

I recently installed Ubuntu 14.04 using WUBI and after installation when it booted it showed an error: Serious errors were found while checking the disk drive for /. There were three options: ...
85
votes
11answers
107k views

How do I install Java?

How do I install Java and also in my browser so websites with Java work?
11
votes
12answers
42k views

How to control Brightness

I didn't install anything myself, but only Ubuntu 12.04 LTS on an Acer 4741g. I use Fn+left/right to change the brightness, but failed. How can I control the brightness levels?
15
votes
2answers
43k views

Installing Eclipse Kepler

I need some help to set up the Eclipse Kepler 4.3 on Xubuntu, I whould like to do it by the command terminal. Which are the right commands?
54
votes
2answers
70k views

How would I install Picasa 3.9?

I've noticed a new release of Picasa (3.9). How would I install it over my current install of Picasa?
19
votes
8answers
73k views

“unable to find a medium containing a live file system” error when installing

I got this error while trying to install ubuntu 10.10 from a bootable USB stick on to asus x64j series laptop. After getting this error the installation fails to start. I have used the same USB stick ...
56
votes
9answers
109k views

How to roll back Ubuntu to a previous version?

I just installed a new version of Ubuntu and I want to roll it back to the previous version. How can I do that? Is that even possible?
8
votes
6answers
30k views

Don't have network connection using a BCM4313 adapter

I just upgraded to Ubuntu 13.10, but since the upgrade I don't have internet access via wifi anymore. I can: See networks Connect to a network Ping myself (localhost, 192.168.0.103) I can't: ...
38
votes
7answers
69k views

How to copy & paste from Ubuntu VirtualBox guest to Windows host?

I am running VirtualBox 4.1.4 on my Windows 7 laptop, running an Ubuntu 11.10 guest. I would like to copy text from Ubuntu's terminal and paste it into a file on the Windows host. This doesn't work ...
28
votes
12answers
91k views

How can I install Minecraft?

I have tried many tutorials but none of them are clear enough. I have also tried installing it using Wine but it won't update and Wine goes gray and stops working. Does anybody know an easy way to ...
89
votes
8answers
84k views

How can I get apt to use a mirror close to me, or choose a faster mirror?

Downloading from the main Ubuntu archive is slow even when it's not release day, how can I get apt-get to automatically use a mirror that is close to me?
43
votes
5answers
114k views

How do I change the default session for when using auto-logins?

When autologon is active, lightdm will start the Unity 3D session, not the 2D (or any other shell that I want to auto-login to). Is there a way to start the shell I want automatically (autologon)? ...
31
votes
4answers
117k views

Difference between the i386 download and the amd64?

What is the difference between standard i386 download and the amd64 download of Ubuntu 11.04? I am currently running the i386 on an amd machine, would my system work better with the amd64 download ...
18
votes
4answers
63k views

How do I remove the proprietary ATI drivers?

I've installed 11.10 and the proprietary ATI drivers using "additional drivers" The performance of my system is absolutely awful and it shouldn't be. I tried to remove the proprietary drivers using ...
140
10
votes
11answers
41k views

No Sound on Ubuntu 12.04

After I installed Ubuntu 12.04, there are no sound at all on my headphone (rear jack panel). On Sound settings > playback, it seemed that the sounds were detected after I choose 'play sound'. ...
151
20
votes
8answers
80k views

apt-get update fails to fetch files, “Temporary failure resolving …” error

Err http://archive.canonical.com natty InRelease Err http://security.ubuntu.com oneiric-security InRelease Err http://extras.ubuntu.com natty InRelease ...
115
2
votes
3answers
86k views

How can I install and download drivers without internet?

I have recently installed ubuntu 12.04 LTS, but as in previous versions; I need a driver for wireless. When booting from USB, I could download and install the Broadcom Wireless STA driver: now I can't ...
10
votes
5answers
37k views

How to install WhatsApp?

Please tell me how to install WhatsApp in Ubuntu? I have heard of WINE. Can you guys please clarify ? Related: How to use Whatsapp mobile application on Ubuntu Touch?
2
votes
4answers
50k views

How do I type an `@` (at sign) symbol?

I have Ubuntu on my MacBook 2007 with a Spanish keyboard, on MacOS the @-sign was typed using Alt (Option) + 2, but on Ubuntu I have no idea. I have to copy and paste it every time. How do I type an ...
17
votes
4answers
88k views

Grub rescue - error: unknown filesystem

I have a multiboot system set up. The system has three drives. Multiboot is configured with Windows XP, Windows 7, and Ubuntu - all on the first drive. I had a lot of unpartitioned space left on the ...
123
votes
17answers
93k views

How can I install software or packages without Internet (offline)?

I have a friend who has got a computer that is not connected to the Internet. Is there any way to install software offline easily?
15
votes
10answers
93k views

Access files on Samsung Galaxy S3 external sd card?

I have a Samsung Galaxy s3 running the stock Samsung ROM and I'm trying to transfer files - videos, photos, music and downloads, from my handset to my system via USB running Ubuntu 12.04. I have ...
67
24
votes
4answers
83k views

How can I tell what version of Java I have installed?

I want to start toying around with java (eventually getting to the point where I can write basic little programs for android or web), but I've managed to have java messed up on my computer (from past ...
44
votes
10answers
70k views

Unable to mount Windows (NTFS) filesystem due to hibernation

Whenever I boot Ubuntu, I get a message that it cannot mount my windows partition, and I can choose to either wait, skip or manually mount. When I try to enter my Windows partition through Nautilus I ...
10
votes
6answers
16k views

Upgrading from 13.10 to 14.04 broke Grub

I have a dual boot Ubuntu + Windows 8 on an UEFI system. Everything was ok until I upgraded to Ubuntu 14.04 from 13.10. Now what I get when I boot the pc is a grub rescue screen like this with the ...
28
votes
5answers
56k views

Uninstall a program installed with Wine

I am using Ubuntu 11.10. By using wine software i installed some software like nimbuzz and ibibo messenger. Both the programs are not working and showing the bug as We're sorry, but an unknown error ...