Greatest Hits

21
votes
6answers
68k views

“SIOCSIFFLAGS: Operation not possible due to RF-kill”?

I am getting this error as a part of this problem here but since this problem is totally different issue I think it is better to consider this issue separately. My wlan0 is down. When I try to turn it ...
5
votes
3answers
22k views

Why not work Apache virtual hosts on Ubuntu 14.04?

I was install Apache 2.4 on Ubuntu 14.04 and it work fine by http://localhost/ address. But when I try to add new virtual host, for example http://bow.loc and restart apache, new address not available ...
16
votes
2answers
55k views

How to find a text file which contains a specific word inside (not in its name)

I want to find a text file in my hard disk which contains a specific word. I want to use a graphic application. I'm on 12.4 "Precise Pangolin". Prior to Ubuntu 12.4 I used to start in the dash an ...
9
votes
4answers
23k views

Ubuntu 14.04 multi touch screen support

Just installed 14.04. It seems to be converting all my screen touch gestures to mouse gestures. And it only supports one point touch. It is supposed to support ten touch points (tested with windows ...
5
votes
2answers
95k views

How to map a network drive?

I am unable to map a Windows network drive in Ubuntu. I have entered the following command in the terminal: karthick@karthick:~$ sudo mount -t cifs -o username=raghu //172.29.32.184 /media/Data/ ...
12
votes
3answers
35k views

SMBus/ BIOS error while booting Ubuntu in VirtualBox

I am trying to boot Ubuntu 13.04 in VirtualBox, but every time I boot, I get an error that says: SMBus base address uninitialized - upgrade BIOS or use force_addr=0xaddr This happens right after ...
45
votes
10answers
84k views

MySQL GUI Tools

Does anyone have any good ideas as to native MySQL GUI clients for Ubuntu? So far I've tried MySQL Workbench, which never seemed to work properly, phpMyAdmin which I found a bit slow, and Navicat ...
5
votes
4answers
53k views

SSH Permission denied (publickey)

I have tried searching previous questions for answers to my question but all of the answers that have been suggested previously haven't worked for me. I am trying to connect to a linode (running ...
1
vote
1answer
19k views

Terminal: sudo: apt-get: command not found

This is my first post here, so let me be welcomed with a serious issue to be answered. Lately some really bad things have been happening with my computer, having to do with lack of icons and all kinds ...
13
votes
3answers
58k views

How do you open a command line?

I want to set up trim for my OCZ VERTEX 4 SSD, but I have no idea how to do this even after reading the instructions. How do you even access the command line or run option to put the commands into ...
64
votes
4answers
52k views

What is Ubuntu Touch (Ubuntu for Phones)

Following up on Canonical's announcement, what is Ubuntu for phones, where can I download a copy of the OS to run on my phone? And how do I know if it's compatible with my phone?
45
votes
4answers
66k views

Running programs in the background from terminal

How do I run a program in the background of a shell, with the ability to close the shell while leaving the program running? Lets say my UI is having problems or for some reason, I need to boot up a ...
3
votes
4answers
35k views

how to correctly install apache2, php5, mysql and phpmyadmin

What is the most correct method of installing apache 2 server, php5, mysql and phpMyAdmin? I installed it this week, and I had a lot problems without solutions, so now that I reinstalled Ubuntu 13.04 ...
32
votes
8answers
20k views

How to turn off baloo in KDE 4.13?

I have Kubuntu 14.04 and just installed the newest updates. Looking at the process list I see baloo indexer running. I could not find a checkbox in Baloo settings to turn off the indexing.
43
10
votes
4answers
40k views

Grant a user permissions on www-data owned /var/www

I have a simple web server setup for some websites, with a layout something like: site1: /var/www/site1/public_html/ site2: /var/www/site2/public_html/ I have previously used the root user to ...
2
votes
3answers
55k views

Installing Ubuntu from usb pendrive on hard disk

I have downloaded Ubuntu 12.04 desktop iso. I wish to install this on my laptop and replace the existing windows xp (SP3) with ubuntu. Unfortunately I do not have a working CDROM drive on my laptop. ...
27
votes
10answers
61k views

Radeon HD 2000, 3000, 4000 on Ubuntu 12.04.2 and higher: fglrx (legacy) unsupported, what to do?

After upgrading to 12.10 quantal, the packaged version of fglrx no longer works. I discovered that this is because there is a separate 'legacy' fglrx driver for the HD 2k-4k series cards, but it is ...
14
votes
5answers
23k views

Anyone has successfully installed CUDA 5.5 on Ubuntu 13.10 64-bit?

I tried to install CUDA 5.5 through deb routine, following the steps in Nvidia website, using the deb file for ubuntu 12.10 (the latest version I could found on Nv website), the installer fail to ...
11
votes
2answers
54k views

How to permanently set environmental variables PATH and M2_HOME in ubuntu for maven3?

I have downloaded the latest apache-maven3.zip file and extracted it to the folder: /home/gaurav/Java/maven3. I don't know how to set the environmental variables for maven - such as PATH and M2_HOME. ...
18
votes
1answer
52k views

My WiFi adapter is not working at all, how to troubleshoot?

On this site I see hundreds if not a thousand questions being asked about issues with a Wireless LAN adapter not being detected/recognized by Ubuntu. Some mainstream adapters appear to be utterly ...
27
votes
2answers
97k views

How do I compress a directory?

I'm trying to compress a directory and ftp it to a windows ftp. I have tried every tar command I can find to compress a directory. It appears to be ok. Then I transfer it and view it's contents ...
38
votes
4answers
55k views

What is the equivalent of the “tracert” DOS command?

tracert is a command in MS-DOS command prompt to trace the route to an IP Address. Is there any command in the Gnome Terminal equivalent to this?
7
votes
3answers
15k views

“Failed to start session” after interrupted upgrade to 14.04

While upgrading to 14.04 using sudo do-release-upgrade my network connection was interrupted and several packages failed to upgrade. Running do-release-upgrade again reported No new releases found ...
4
votes
7answers
62k views

Why can't Ubuntu 12.04 detect my screen resolution?

I tried using Ubuntu 12.04 LTS using a USB Stick, but the desktop resolution is really low - every icon and piece of text looks pixelated. I have a `ViewSonic VS10866 monitor : 19" LCD display, ...
85
votes
5answers
79k views

How do I get a list of installed files from a package?

I want to know where I can find my installed application when I installed it on Ubuntu using package manager. I installed RabbitMQ and ran locate rabbitmq which gave me following result: ...
10
votes
4answers
53k views

Run RDP server on Ubuntu 12.10

What's the best way to run a RDP Server on Ubuntu 12.10? I'd like to run an RDP server on my Desktop running Ubuntu 12.10 and be able to login from another 12.10 machine using the remote login ...
18
votes
4answers
53k views

How do I move (copy) my entire Ubuntu system to a different hard disk?

The HDD I have my Ubuntu installed is about to fail. I would rather not lose 3 years worth of data, customisation and apps. I am looking for a way to move the complete system (SWAP included, because ...
30
votes
2answers
53k views

What does `nomodeset` do

Since installing Ubuntu 12.10 I have been playing around trying to get my Radeon HD 5450 gpu to work with the proprietary driver, as from the start installing the driver meant losing unity. I won't ...
5
votes
2answers
23k views

Dark GTK theme for Ubuntu 14.04

I am using the zonColor DarkNight theme on Ubuntu 13.10 and am quite pleased with it. I would like to have a similar theme for Ubuntu 14.04 but so far I could not find a single dark theme available. ...
0
votes
7answers
11k views

Skype sign in: Server Connect Failed

When I try signing in to skype , I get the message "Sign in Failed - Server Connect Failed". To resolve this issue I tried almost everything, from removing Skype completely to install Skype again and ...
18
votes
3answers
83k views

How to check the information of current installed video drivers?

I have just installed Ubuntu 10.04. My CPU usage is high when I do trivial things such as scrolling through a PDF file. So I think my video driver is not properly installed. I want to confirm that by ...
6
votes
3answers
32k views

Where is Firefox's plugins directory?

I know that there are extensive, "proper" methods for installing Firefox plugins. However, I would like to know where the folder is for linking shared-object (.so) files, such as libnpjp2.so and ...
32
1
vote
1answer
29k views

Resetting forgotten phpmyadmin password

I recently installed LAMP on Ubuntu 13.04(32-bit) but forgot my phpMyAdmin password. How can I reset its password without re-installing it?
6
votes
9answers
58k views

Getting error message when trying to start a virtual machine

I have been using VMWare on Windows for a long time. But after a long wait, I moved to VirtualBox on Ubuntu 11.10. I installed Ubuntu, 32 Bit, installed all available updates and installed Virtual ...
29
votes
7answers
89k views

NVIDIA drivers not working after upgrade. Why can I only see terminal?

Tonight I upgraded to 11.04. Problems. Once I had finished the upgrade, I restarted my computer as it told me too. When I got past the ubuntu 11.04 (purple background orange dots), it simply went to ...
4
votes
1answer
22k views

Cannot connect to wireless in Lubuntu 14.04

I have tried all afternoon to fix this, but now I give up. I am trying to set up an old XP PC with Lubuntu 14.04. It works perfectly fine, except for the wireless connection. Connecting with ethernet ...
17
votes
7answers
34k views

How to install PostgreSQL on Ubuntu 13.04?

How to install PostgreSQL in Ubuntu 13.04? I followed by this tutorial, How to install postgreSQL 9-2 - UbuntuGeek.com But in logs it says: the package is deprecated and no longer will be used ...
26
votes
3answers
25k views

How can I install MonoDevelop v4 on 12.04?

I am using Ubuntu 12.04. I can install v2.8.6.3 of Monodevelop from software center but I need at least v3 to use Monogame v3 or higher. Can anyone point me in the right direction please? Thanks
9
votes
2answers
51k views

How much memory (RAM) should I allocate to the Virtual Machine?

I'm installing Ubuntu in a Virtual Box; my host OS is Windows 7, and I have 6GB of RAM on my system. One tutorial on setting up Ubuntu on a virtual machine (this one, on step 14: ...
2
votes
2answers
52k views

how to fix the hard-drive Bad Sector

I tried to fix my hard drive using Ubuntu but I found that message and didn't know what to do with.... I need to fix my bad sectors fsck /dev/sdb fsck from util-linux 2.20.1 e2fsck 1.42.5 ...
15
votes
4answers
61k views

How do I improve the performance of my VirtualBox guest?

I run a guest ubuntu 12.04 on a host ubuntu 12.04, with VirtualBox, and the guest is much, much slower than the host (ALT+TAB takes 4-5 secs). I had a look around and I found contradicting opinions on ...
5
votes
3answers
18k views

Change default system font using terminal only in 14.04

The following question answers how to Adjust fonts using tweak tool but the luddite in me would like to know how to do this without installing unity-tweak-tool. How can I adjust the default system ...
91
votes
1answer
89k views

What are the meta, super, and hyper keys?

In System -> Preferences -> Keyboard -> Layout -> Options ->Alt/Win key behavior What do meta, super, hyper mean?
7
votes
5answers
72k views

Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)

I have mailserver configure using dovecot+postfix+mysql and it was runnig fine in the server(Ubuntu Server). But during last week it stopped working correctly. It doesn't send email. When I try to ...
23
votes
7answers
16k views

How Do I upgrade Docker

I type docker.io version, and get: Client version: 0.9.1 Go version (client): go1.2.1 Git commit (client): 3600720 Server version: 0.9.1 Git commit (server): 3600720 Go version (server): go1.2.1 Last ...
2
votes
2answers
42k views

Installing software center ubuntu

Okay so I recently had some problems with ubuntu software centre where if I opened it from the dashboard it would open up, but only display a white screen. Nothing happened, so if I then clicked the ...
14
votes
4answers
50k views

How do I find the path to pg_hba.conf from the shell?

I would like to obtain the path to pg_hba.conf from the shell. The path varies between versions of PostgreSQL. For instance, for 8.4 and 9.1: /etc/postgresql/8.4/main/pg_hba.conf ...
8
votes
5answers
72k views

How to boot into Windows 7 when grub is installed in the Windows partition?

Original title: How can i solve (un)booting windows 7 on the same partition with grub? I've been researching for 2/3 days about this problem and I have came up empty. Basically, partition 1 is ...
34
votes
5answers
68k views

Difference between “su”, “sudo -s”, “sudo -i”

I already read it from manual but I can't see difference.. su - change user ID or become superuser sudo -s [command] The -s (shell) option runs the shell specified by the SHELL environment ...
53
18
votes
3answers
57k views

How do I move all files from one folder to another using the command line?

I would like to know how could I move all files from a folder to another folder with a command line. Let's say I'm in my Downloads folder and there are a 100 files that I would like to move to my ...