Greatest Hits

10
votes
2answers
57k 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: ...
97
votes
1answer
95k 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?
37
votes
5answers
76k 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 ...
58
6
votes
1answer
38k views

“E: Unable to locate package update” when I try to update my system, why?

I have almost an hour trying to update my installation, this is how I'm trying to do it: $ sudo apt-get install update [sudo] password for braiam: Reading package lists... Done Building dependency ...
30
4
votes
2answers
17k views

How to remove Gnome from Ubuntu Desktop 14.04

I need to use Ubuntu Desktop on my server for certain reasons because I can't use Ubuntu Server, but to make it more efficient I would like to remove the desktop environment and boot straight to the ...
25
votes
6answers
30k views

How to re-enable tray icons for applications in Ubuntu 13.10?

Unfortunately in Ubuntu 13.10 there is no tray icon and whitelisting is removed. The older solutions do not work for me, e.g. I get the message: No such schema 'com.canonical.Unity.Panel' when I try ...
16
votes
1answer
18k views

Ubuntu 12.04.4 LTS to 14.04.1 LTS upgrade: “no new release found”

According to Trusty Tahr Release Schedule, Ubuntu LTS 14.04.1 (first .1 version) was released two days ago. Unfortunately when trying to upgrade using the do-release-upgrade command I get the message ...
4
votes
4answers
32k views

How can I install libpcap header files on Ubuntu 12.04?

How can I install libpcap header files on Ubuntu 12.04? When I use apt-get install libpcap I receive following message: Reading package lists... Done Building dependency tree Reading state ...
10
votes
1answer
18k views

Parallels (Tools) 9 & 14.04

I can create 14.04 VM with Parallels 9 (on OSX 10.9.2) just fine. However, once I install Parallels Tool, the launch and menu bars disappear. There's still some functionality, e.g. I can create a ...
15
votes
4answers
67k 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 ...
22
votes
4answers
57k 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 ...
21
votes
1answer
44k views

How do I find out the kernel version I am running?

"The path to previous driver is usually /lib/modules//kernel/net/wireless" I need this info so I can finish updating my STA broadcom wireless. However, I'm a noob at Ubuntu and I'm not sure how to ...
26
6
votes
2answers
28k views

cgi-bin not working

I reinstalled kubuntu 13.10, cgi-bin is not working. Apache downloads the cgi instead of executing it! I have the latest apache with cgi mod enabled. To 000-default.conf, I added these options: ...
51
6
votes
3answers
52k views

How to make an xorg.conf file

I just installed Ubuntu 12.10 and I need to make a custom xorg.conf file. By default, there is not an xorg.conf file on my system. I know what I need to write in the config, but I just don't know how ...
4
votes
5answers
33k views

How to install build-essential?

I am trying to install G++ compiler in Ubuntu 13.10. It told me I needed to install the build-essential package. I have tried the below code sudo apt-get update sudo apt-get install build-essential ...
3
votes
1answer
9k views

Netflix error code M7357-1003

Netflix error code M7357-1003. I am using Ubuntu 14.04. I have done all the updates, upgrades, and and can play YouTube, Handbrake ripped movies, but I can't play Netflix using Chrome Browser. I ...
25
31
votes
2answers
58k 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 ...
27
votes
3answers
52k views

How can I uncompress a *.7z file?

How can I uncompress a *.7z file in Ubuntu and keep the directory structure?
56
39
votes
4answers
82k views

How do I configure a joystick or gamepad?

I recently received a Logitech Rumblepad 2 (a joystick, like a PS2 controller) from a friend. How would I configure this in Ubuntu? If possible, I would prefer to use a GUI utility. I tried ...
34
votes
8answers
24k 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.
45
8
votes
3answers
65k views

How do I change directories in the terminal, and know which directory I'm in?

I am following the directions @ Ubuntu community Help; however, I am still confused about a few things. I researched it & found this post: using the terminal to change directory, but it's above me ...
1
vote
5answers
39k views

Install Ubuntu in UEFI mode (unable to boot from USB)

I recently bought a Dell Inspiron 15R SE with Windows 8 (64 bit) pre-installed (UEFI supported). I want to install Ubuntu in dual boot with Windows 8. I tried to follow all instruction here : ...
0
votes
5answers
20k views

Bluetooth not working in ubuntu 14.04 LTS

Since when I got rid of windows 8 and installed ubuntu, my bluetooth never really worked. Ubuntu detects the bluetooth hardware (it shows the bluetooth icon in the status bar), and I can turn it on or ...
0
votes
1answer
25k views

error: no such partition Entering rescue mode… grub rescue>

I am using Windows 8.1 and Ubuntu 13.10 as in dual boot. I have changed my disk size using disk management in Windows 8.1-- specifically I have clubbed another partition into local disc C in Windows. ...
8
votes
1answer
23k views

Ubuntu 14.04 and Android, can't see phone on my computer

I have installed gMTP and tried to follow this tutorial to solve this problem: http://www.webupd8.org/2013/01/upgrade-to-gvfs-with-mtp-support-in.html But neither worked. I tried to connect both my ...
6
votes
9answers
63k 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 ...
28
votes
10answers
63k 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 ...
8
votes
5answers
78k 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 ...
13
votes
4answers
48k views

In VirtualBox, how do I set up host-only virtual machines that can access the Internet?

In setting up virtual machines with VirtualBox, I often want the following characteristics vm has a static ip host can access vm without port forwarding vm can access the internet I can move ...
2
votes
1answer
50k views

How to Fix “Read-only file system” error when I run something as sudo and try to make a folder/file?

When I try to save something or rename a file/folder it say this error " Read-only file system" or run something as root in the terminal it say this error sudo: unable to open /var/lib/sudo/"My User ...
5
votes
7answers
64k 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, ...
19
votes
1answer
26k views

java plugin in Chromium

Icedtea-7-plugin installed but it does not appears in the list in about:plugins in Chromium. Not able to execute java applets. Tried installing Icedtea-7-plugin but in vain. Using openjdk7 in 14.04
4
votes
2answers
64k views

How do you run update-grub?

I went into Live CD and activated Terminal. Then, I typed gksu nautilus to gain temporary access to my root directory. Once the Manager window opened, I clicked on File System and navigated to the ...
14
1
vote
3answers
41k views

How do I install intel integrated graphics controller?

I try to find what graphics card I'm running, the commands in terminal only gives me this: VGA compatible controller: Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics ...
3
votes
3answers
18k views

How can I install 3.16 kernel on Ubuntu 14.04

sudo apt-get update && sudo apt-get dist-upgrade do not show the newest kernel. How can I install 3.16 kernel on 14.04?
16
votes
3answers
28k views

What does 'without password' mean in sshd_config file?

I just installed Ubuntu 14.04 on my server and I was setting up all my config files when I came across this in my sshd_config file: # Authentication: LoginGraceTime 120 PermitRootLogin ...
7
votes
5answers
73k 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 ...
18
votes
2answers
79k views

How to correctly enable Desktop Cube in Unity 3D?

I have read several questions regarding how to fix an already enabled desktop cube or the problems it had in 11.04. But in 11.10, how can I correctly enable desktop cube in Unity 3D?
11
votes
4answers
55k 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 ...
6
votes
2answers
27k 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. ...
26
votes
10answers
53k views

How to find and change the screen DPI?

I am trying to find and then change the screen DPI (dots per inch) setting in 12.04 and 12.10. However, I can't seem to find any app or config file that can do this. Is there any app or conf file for ...
52
17
votes
6answers
49k views

How to determine if a string is a substring of another in bash?

I want to see if a string is inside a portion of another string. e.g.: 'ab' in 'abc' -> true 'ab' in 'bcd' -> false How can I do this in a conditional of a bash script?
30
votes
7answers
91k 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 ...
65
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?
6
votes
4answers
10k views

14.10 wine and fglrx conflict

I've just updated to 14.10 from 14.04, and have come across a problem having both wine and fglrx installed The wine dependencies that are causing the problem go like this wine > wine1.6 > ...
52
votes
2answers
63k views

How do I keep track of failed SSH log-in attempts?

I'd like to see if somebody has been trying to log-in by brute-force into my Ubuntu 12.04 server over SSH. How can I see if such activities have been taking place?
13
votes
3answers
39k views

How to disable IPv6 permanently?

How can we disable IPv6 system wide via terminal commands? I've read editing /etc/modprobe.d/aliases and replacing: alias net-pf-10 ipv6 with: alias net-pf-10 off alias ipv6 off Is this safe ...
7
votes
6answers
55k views

Every command fails with “command not found” after changing .bash_profile?

I was updating my .bash_profile, and unfortunetly I made a few updates and now I am getting: env: bash: No such file or directory env: bash: No such file or directory env: bash: No such file or ...
2
votes
4answers
61k views

How do I make a bootable USB stick from an ISO image? I'm running Kubuntu 12.04

Why won't kb3 (in Kubuntu 12.04) recognize a USB drive and allow me to burn an ISO image to it? kb3 is the default iso burning application and it gets generally good reviews. But it pops up a dialog ...
6
votes
2answers
40k views

How to enable Moonlight/Silverlight 5 on firefox?

I have installed moonlight from this post here: http://askubuntu.com/a/327862/188878 the problem is, the application/website I am trying to use "requires" silverlight 5. is there anyway to trick the ...