Greatest Hits

109
votes
36answers
278k views

How to fix “The system is running in low-graphics mode” error?

Note: This is an attempt to create a canonical question that covers all instances of "low-graphics mode" error that occurs to a user, including but not limited to installation of wrong ...
164
votes
7answers
453k views

Installing Ubuntu on a Pre-Installed Windows 8 (64-bit) System (UEFI Supported)

I bought a computer with preinstalled Windows 8. But I didn't like Windows 8, so I decided to install Ubuntu as a second operating system. I'm absolutely new to Linux. I have been using Windows for ...
85
votes
9answers
748k views

How do I install a .tar.gz (or .tar.bz2) file?

I have downloaded tar.gz files. But I don't know how to install it. How do I install this kind of file?
198
votes
21answers
317k views

How can I install Sun/Oracle's proprietary Java JDK 6/7/8 or JRE?

I want to install Oracle's JRE and to update to the latest version with the Software Updater when they released. Is there a Ubuntu package that is provided by Canonical or Oracle? Before release Java ...
55
votes
49answers
280k views

How to install Broadcom wireless drivers? (BCM43xx)

I'm having serious problems installing the Broadcom drivers for Ubuntu. It worked perfectly on my previous version, but now, it is impossible. What are the steps to install Broadcom wireless drivers ...
487
votes
65answers
367k views

What Application Indicators are available?

I installed Ubuntu 11.04 on one of my systems and I am using the Unity interface. Unity is working quite well so far but I really miss panel applets for net speed, cpu temp, and system monitor. ...
111
votes
5answers
400k views

How do I change the GRUB boot order?

I have both Windows 7 and Ubuntu installed on a shared machine. Because a lot of the non-developers use Windows, I'd like to change the boot order to make it easier for them. Currently the boot order ...
507
98
votes
15answers
267k views

Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?

I get this error when trying to use apt-get: E: Could not get lock /var/lib/dpkg/lock - open (11 Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/) is ...
731
81
votes
5answers
73k views

How can I accept the Microsoft EULA agreement for ttf-mscorefonts-installer?

After a recent update, ttf-mscorefonts-installer prompted me to accept its license agreement. For some reason my terminal will not allow me to accept, or for some reason I am pressing the wrong ...
150
votes
29answers
291k views

My computer boots to a black screen, what options do I have to fix it?

I am trying to boot Ubuntu on my computer. When I boot Ubuntu, it boots to a black screen. How can I fix this? Table of Contents: If you are trying to install Ubuntu If you have a dual boot ...
156
votes
14answers
346k views

How do I reset a lost administrative password?

I'm working on a Ubuntu system using a Panasonic CF-50 Laptop. My Client has completely forgotten his Administrative Password. He doesn't even remember entering one; however it is there. I've tried ...
477
22
votes
5answers
285k views

Recovering from 'grub rescue>' crash

I did a dumb thing... I forgot that Ubuntu 10.04 (Lucid) switched to Grub2 which puts a ton of *.mod files (kernel modules) in /boot/grub. I thought they were soundtrack files put there erroneously ...
15
votes
8answers
139k views

“No root file system defined” error while installing ubuntu

I am new to linux/ ubuntu and just downloaded the v11 of ubuntu to learn linux. I faced this "No root file system is defined" error while trying to install it. This is how I was proceeding - ...
181
votes
11answers
285k views

How do I upgrade to a newer version of Ubuntu?

What are the different ways I can use to upgrade Ubuntu from one release to another?
185
votes
6answers
507k views

How can I add a new user as sudoer using the command line?

After I add a user using adduser, I can't see it via System->Administration->Users and Groups unless I logout and then login again. Is that normal? Also, can I set a newly added user as a ...
111
votes
4answers
330k views

What is the correct way to install proprietary ATI Catalyst Video Drivers (fglrx) directly from AMD?

I am planning on doing a fresh install of 12.04 LTS and want to know what is the correct way to install ATI Catalyst Video Driver? There are multiple valid answers for this question spanning over ...
106
votes
6answers
127k views

Why does a Ubuntu guest in VirtualBox run very, very slowly?

I'm using currently Ubuntu 12.04 LTS as a host machine, and I've virtualized three machines: a Xubuntu 12.04 guest a Windows 7 guest a Ubuntu 12.10 guest All the guests have the same VirtualBox ...
28
votes
7answers
88k views

How to install Skype with 13.04

jovan@jovan-HP-ProBook-4540s:~$ sudo apt-get install skype Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This ...
109
votes
8answers
103k views

How do I fix a “Problem with MergeList” or “status file could not be parsed” error when trying to do an update?

The computer gave me this output in a window: E: Encountered a section with no Package: header E: Problem with MergeList ...
570
267
votes
7answers
207k views

How to enable hibernation?

In Ubuntu 12.04 and newer, hibernation has been disabled by default in policykit. How can I enable this back?
400
14
votes
6answers
201k views

Fixing GRUB error: “error: unknown filesystem”

When booting into Ubuntu, I'm getting the following error with a grub rescue shell following it: Error: unknown filesystem. grub rescue> I'm not exactly sure what I did. I believe I installed ...
39
votes
13answers
204k views

How to remove Ubuntu and put Windows back on?

I have absolutely no experience with Linux, and I desperately need to get my laptop back up and running again with Windows. How do I remove Ubuntu?
223
votes
19answers
167k views

Flash video appears blue

The Problem After updating to Ubuntu 12.04 from Ubuntu 11.10, all video is still blue, whether playing in a browser or a player. Same problem occurs in 11.10 as well. I have tried to uninstall all ...
77
votes
7answers
159k views

Could not reliably determine the server's fully qualified domain name?

When I restart my apache server using the command sudo /etc/init.d/apache2 restart I get the following error: Restarting web server apache2 apache2: Could not reliably determine the server's ...
250
111
votes
5answers
273k views

How to unzip a zip file from the Terminal?

Just downloaded a .zip file from the internet. I want to use the terminal to unzip the file. What is the correct way to do this?
136
votes
15answers
232k views

How do I check if I have a 32-bit or a 64-bit OS?

I downloaded and installed the latest 11.04 version from the official Ubuntu site. However I don't know if it installed the 32-bit or 64-bit version. In Windows 7 I could right click My PC and there ...
69
votes
12answers
181k views

How to install Eclipse?

I want to install the latest version of Eclipse but the Ubuntu Software Centre contains an older version. Is there a PPA or some other way to install latest Eclipse? Please describe the steps for ...
43
votes
1answer
21k views

Mouse cursor flickering and disappearing

I installed Ubuntu 13.10 today and since the first start up I have a problem with the mouse cursor. Its starts randomly to disappear and flickers a lot. I searched for a solution on google and here ...
133
votes
20answers
98k views

Unity doesn't load, no Launcher, no Dash appears

When I login, nothing happens. I am presented with my desktop wallpaper. No Dash, no Launcher, nothing.
505
75
votes
13answers
237k views

How do I add a DNS server via resolv.conf?

Is /etc/resolv.conf useless in Ubuntu 12.04 LTS (Precise Pangolin)? I see that the DNS server information is stored in NetworkManager now. The nmcli command line tool can list that for you. If I ...
46
votes
8answers
106k views

What is the path to the kernel headers so I can install vmware?

I installed the VMware bundle on my Ubuntu 11.04 successfully but when I open it it gives me this window and I don't know the path to this C headers.
341
votes
11answers
291k views

What are Unity's keyboard and mouse shortcuts?

In Unity, are there any pre-defined shortcuts, e.g. to open the dash or unhide the launcher?
220
votes
12answers
275k views

How to list all installed packages?

I'd like to output a list of all installed packages into a text file, so that I can review it and bulk-install on another system. How to do this?
161
votes
21answers
157k views

What different desktop environments and shells are available?

This question exists as it fills a specific criterion. While you are encouraged to help maintain its answers, please understand that "big list" questions are not generally allowed on Ask Ubuntu ...
225
votes
16answers
265k views

How to add a directory to my path?

How do I add a directory to my $PATH in Ubuntu and make the changes permanent?
71
votes
5answers
163k views

How to install updates via command line?

Good day, When I log into my web server via SSH I see the information: 88 packages can be updated. 80 updates are security updates I tried apt-get update then apt-get upgrade but each time I log ...
252
votes
11answers
392k views

How can I configure Unity?

Are there any configuration options for the Unity desktop? There are multiple valid answers for this question spanning over several versions of Ubuntu. For your convenience an index of each below ...
166
10
votes
3answers
93k views

How to install Flash player on Ubuntu?

My work supplies me with a laptop so I have converted my old laptop for my kids to play on. I use Linux mainly as a deterent against WinDoz viruses. Even though I have the latest Adobe Flash player ...
45
votes
5answers
122k views

How do I install python 2.7.2 on Ubuntu?

I want to install python 2.7.2.tgz on Ubuntu, downloaded from http://python.org/download/. Is this a correct way to install : ./configure make make install If not , how can I do that?
350
8
votes
3answers
143k views

How to install Synaptic Package Manager?

I tried to install Synaptic Package Manager but I get the following error message: Package dependencies cannot be resolved. This error could be caused by required additional software packages which ...
34
votes
8answers
75k views

VirtualBox '/etc/init.d/vboxdrv setup' issue

I have installed VirtualBox through the software centre, but when I try to start a VM, I get the following error: Kernel driver not installed (rc=-1908) The VirtualBox Linux kernel driver ...
21
votes
5answers
120k views

How to install utorrent step by step?

I am trying to install utorrent instead of using the torrent apps and I just came off windows seven can someone help me?
66
votes
8answers
172k views

What does “sudo apt-get update” do?

I am wondering what sudo apt-get update does? What does it update?
3
votes
6answers
69k views

installing skype in ubuntu 13.10

When upgrading ubuntu 13.04 to ubuntu 13.10 (64 bit), the upgrade tool insisted on removing skype. I'm now trying to get skype reinstalled. When trying from the software center (as suggested by why ...
24
votes
5answers
93k views

How do I fix a “Wireless is disabled by hardware switch” error?

I just updated to Ubuntu 12.04 from 11.10 but soon after updating I was disappointed to see that Wireless is disabled by hardware switch. I can not click the button 'Enable wireless' which is ...
54
votes
6answers
238k views

Change folder permissions and ownership

I would like the user to have full rights on this folder (as well as all sub-directories and files in it): ~/.blabla currently owned by root. I have found numerous posts (in this forum and ...
58
votes
25answers
141k views

How do I download a YouTube video?

For a school project I need to download three youtube videos and save them to a CD. I am running Ubuntu 10.10; can anybody provide instructions on how to do this? I'm fairly new to Ubuntu so the more ...
58
votes
8answers
111k views

How do I install Python 3.3?

I have downloaded Python 3.3 from the official site but no idea how to install it. I'm using Ubuntu 12.04
110
votes
4answers
75k views

How do I turn on workspaces? (Why do I only have one workspace since 13.04?)

It appears that Unity on Raring only comes with a single virtual desktop (aka workspaces) by default, and CCSM's Wall plugin has no way to add more. Is this configurable at all?
71
votes
16answers
149k views

How do I set Windows to boot as the default in the boot loader?

How do I set the bootloader so that in my dualboot with Windows 7/Ubuntu 11.04, Windows start up as standard instead of Ubuntu?
299