Greatest Hits

21
votes
5answers
74k views

How to set up nVidia Optimus/Bumblebee in 14.04

The previous methods i have used to set up Bumblebee on 13.10 based distributions is not working under Ubuntu 14.04 . How can I set up Bumblebee and Bumblebee GUI in Ubuntu 14.04 ?
33
votes
7answers
186k views

SSH connection problem with “Host key verification failed…” error

I can connect to another Ubuntu machine in my LAN via SSH. On both of then PC's I installed openssh-server but from another Ubuntu computer I can not connect to my PC via SSH and I got this error: ...
187
14
votes
5answers
135k views

What is a command to compile and run C++ programs?

I am new to Linux. I am using Ubuntu 11.04 and do not know how to compile and execute C++ program in it. I need to know the commands to Compile and Execute a C++ program in Linux.
42
votes
5answers
82k views

How to install OpenJDK 8 on 14.04 LTS?

IMPORTANT: If you need this backported to 14.04, vote for this bug: https://bugs.launchpad.net/ubuntu/+source/openjdk-8/+bug/1341628 Java 8 is now available according to ...
29
votes
3answers
125k views

How to access phpMyAdmin after installation?

I've installed phpmyadmin sudo apt-get install phpmyadmin. Of course, I have also mysql and a web server running properly. Now how can I reach it?
18
votes
2answers
35k 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: ...
5
votes
1answer
162k views

How can I chmod 777 all subfolders of /var/www?

I’m running a webserver and FTP server, wherein /var/www is bound to /home/user/www. I set both directories to chmod 777 (which is fine since it’s for testing only). I can upload files into ...
8
votes
4answers
39k views

Unable to mount NTFS hard drive partition “The disk contains an unclean file system”

I have dual booted ubuntu 13.10 and windows 8.1 in my laptop. Earlier my window partition(C drive) and other NTFS partition was accessible from ubuntu. Now its giving me this error and not mounting: ...
143
votes
12answers
120k views

How do I reset my Unity configuration?

I've been messing around with Unity and broke something, how do I "start over"?
246
148
votes
14answers
211k views

How do I start applications automatically on login?

How can I make an application automatically start when I have logged in?
152
7
votes
2answers
102k views

How do I use Unetbootin to make a bootable Windows USB installer?

it says missing bootmngr or something like that. I'm on ubuntu 12.04 or whatever, the newest one using the gparted to format to NTSC and then unetbootin to install the bootloader, and the iso, then ...
100
votes
5answers
144k views

How can I fix a 404 Error when using a PPA or updating my package lists?

PPA seems to be constantly offline. Whenever I use sudo apt-get update, this error is shown: W: Failed to fetch http://ppa.launchpad.net/ 404 Not Found How do I fix these errors?
16
votes
3answers
69k 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?
20
votes
4answers
165k views

How do I enable Remote Desktop connection on Xubuntu 11.10?

How do I enable Remote Desktop connection on Xubuntu 11.10? I do not find any options such as those present in Ubuntu?
8
votes
1answer
72k views

How to install an already downloaded .crx file extension in chrome?

It download the .crx file from novell-moonlight-3.99.0.3-x86_64.crx and then went to chrome://extensions/ and drag and drop the file on the chrome windows opened in that address and the ...
38
votes
4answers
33k views

nvidia-libopencl1-331 has to be removed before installing WINE

I just installed Ubuntu 14.04 64-bit and enabled the nvidia drivers. Now I am trying to install WINE but I get the message: nvidia-libopencl1-331 has to be removed before installing WINE (translated ...
106
votes
4answers
160k views

Add user to existing Group

I want to add the Apache user (www-data) to the audio group. I've read the man page for useradd, but I'm not having any luck. I'm running xubuntu 11.10. Here's what I'm doing: $ sudo useradd -G audio ...
176
40
votes
4answers
147k views

No such file or directory? But the file exists!

I've downloaded a game (Shank) but the bin file doesn't run. The error that is shown when I try to launch the executable is: bash: ./shank-linux-120720110-1-bin: No such file or directory
16
votes
9answers
36k views

Adobe Flash Plugin is vulnerable/outdated but there is no update in Firefox

I am using Ubuntu 14.04 LTS. When I open a site which requires flash plugin (e.g. Youtube), Firefox says This plugin is vulnerable and should be updated. However if I click Check for updates... ...
96
votes
5answers
183k views

How do I install curl in php5?

I currently have PHP 5.3 installed with Apache in 10.04 Lucid. How can I add the PHP Curl libraries? Do I need to install any other dependencies for curl?
193
54
votes
5answers
100k views

How do I get AMD/Intel Hybrid Graphics drivers to work?

On Ubuntu 12.04 my Sony Vaio VPCSE with Intel® HD Graphics 3000 and AMD Radeon™ HD 6630M worked fine with the Catalyst Control Center version 12.6. Also the switching between integrated and discrete ...
108
votes
12answers
90k views

How do I disable the guest session?

How do I disable the guest session in Ubuntu 11.10 or higher? I don't want people to be able to use my computer without using a password to log in!
73
votes
6answers
124k views

Whats the simplest way to edit and add files to “/var/www”?

Having installed the web server is there a simple way to set a user able to use the graphic interface to copy files and directories to the local web server /var/www I gave myself administrative ...
52
votes
4answers
195k 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 ...
53
votes
5answers
157k 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 ...
56
votes
6answers
123k views

How to run BitTorrent Sync?

I am in Ubuntu 12.04 (precise) 64bit and downloaded the btsync executable from http://labs.bittorrent.com/experiments/sync/ but running it doesn't seem to have any effect. Double-clicking the ...
66
votes
10answers
117k views

How to prevent “Write Failed: broken pipe” on SSH connection?

What can I do to configure SSH on both client and servers to prevent Write Failed: broken pipe errors? It often occurs if you sleep your client computer and resume later.
196
42
votes
19answers
82k views

Ubuntu on Lenovo Yoga 2 Pro

Is it possible to install Ubuntu on the new Lenovo Yoga 2 Pro? I have checked the Lenovo compatibility lists on the Ubuntu site, but no new entries have been created yet for this model (released ...
22
votes
6answers
98k views

How to create a bootable Ubuntu USB flash drive from terminal?

Is there any way to create a bootable Ubuntu USB flash drive from the terminal without using any third-party applications like YUMI,Unetbootin, etc. I tried to create a bootable Ubuntu flash drive ...
29
votes
3answers
203k views

How to run a checkdisk?

I suspect there might be bad sector on a disk. What tool is the best equivalent of the error checking tool of windows? (I used ext3)
137
171
votes
36answers
132k views

What lenses for Unity are available?

This question is present as a matter of historical interest. While you are encouraged to help maintain its answers, please understand that "big list" questions are not generally allowed on ...
6
votes
9answers
54k views

Can't install Skype 4.3 on Ubuntu 14.04 64 bit

First of all, I think this question is not duplicated, because I have tried all other solutions I found here, but nothing solved my problem. I use Ubuntu 14.04 64 bit. I have tried until now: sudo ...
33
votes
8answers
169k views

How do I mount an SD card?

My computer has an SD card slot. When I put a working SD card into the slot, nothing happens. When I put a CD or DVD in, or plug in a USB drive, the medium is mounted and available. Is there something ...
57
votes
4answers
78k views

How can I get my graphics card to be recognized in System Info?

I am new to Linux/Ubuntu. I installed Ubuntu 11.10 on my Lenovo IdeaPad y510. System info says Graphics: unknown. Driver: unknown, Experience: Standard. What should I do to use all my ...
42
votes
5answers
185k views

Adding SSH Keys to Authorized_Keys

I have an Ubuntu server on Amazon EC2, that I use for development, and today I stupidly cleared everything out of the authorized_keys file for SSH. Luckily I have an SSH open, so I am still ...
32
votes
4answers
114k views

How to read and write HFS+ journaled external HDD in Ubuntu without access to OS X?

I have a HFS+ journaled external hard-drive and need to be able to write to it on Ubuntu. I don't have access to my Mac, it's thousands of miles away and I won't have access to it for three months. ...
96
114
votes
11answers
205k views

How do I change the computer name?

When I connect to my server (ubuntu server 10.10), I get this: name@server-name.belkin ~> How can I remove ".belkin"?
165
26
votes
10answers
59k views

How to remove the “AMD Testing use only” watermark?

I've installed the latest catalyst driver (beta) following the step in this guide for Ubuntu Quantal Quetzal. My system is 64 bit and my graphic card is an ATI RadeonHD 6670, this g.c. is Officially ...
241
56
votes
5answers
135k 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?
112
votes
4answers
95k views

Is there a power saving application similar to Jupiter?

I have installed the 13.04 final release and so far I am loving it more 12.10. I'm trying to install the Jupiter power settings app but, I read it is no longer compatible with the new kernel. Is there ...
48
votes
14answers
73k views

How to add a “Show desktop” icon to the launcher?

I recently upgraded from 10.04 to 12.04, and there is no show desktop in the launcher. I know I can use Ctrl+Super+D, but is there a way to get it in the launcher? Edit: I just installed the "show ...
35
votes
2answers
135k views

How do I install OpenOffice.org instead of LibreOffice?

I want to install OpenOffice.org. What can I do to install it on my computer?
12
votes
5answers
64k views

“Unable to locate package” while trying to install packages by apt

When I try to install any package through the command line, I get an error. Can anyone help me on this? $ sudo apt-get install <package> Reading package lists... Done Building dependency tree ...
20
votes
1answer
73k views

How to get gnome shell 3.12 on ubuntu 14.04

I know there is a distro for ubuntu dedicated to gnome and I know ubuntu 14.04 comes with gnome 3.10. But I am wondering what the steps are to: Install the ppas for gnome 3.12 install gnome 3.12 ...
81
35
votes
3answers
170k views

“Mounting cifs URL not implemented yet” when I try to mount a samba share

I have a server for development (Ubuntu 12.04). On that machine, I have a shared folder named "projects". I tried sudo mount -t smbfs smb://192.168.2.28/projects/myProject /mnt/myProject on my ...
45
votes
5answers
217k views

How to enable root login?

I would like to enable the root account on my Ubuntu installation. I realize the security implications of this.
126
23
votes
7answers
69k views

Installing and testing CUDA in Ubuntu 14.04

I am uncertain about how to install CUDA in my system. looking around there are many tutorials about cuda on 12.04 LTS and a few on 13.04 and 13.10, but they all talk about acquiring a deb package ...
309
votes
10answers
250k 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 ...
127
15
votes
6answers
120k 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 ...
184
12
votes
4answers
113k views

How to install and run UNetbootin?

Strangely, but true, you cannot install from the the original site, or run it. So how to install and run UNetBootin?