Greatest Hits
391
votes
60answers
286k views
What Application Indicators 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 Ask ...
53
votes
29answers
93k 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 ...
202
votes
10answers
253k views
How do I install Oracle Java JDK 7?
If I downloaded the latest JDK from Oracle. Do I just download the .tar file, and extract it at /usr/lib/jvm/?
40
votes
9answers
315k views
How to 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?
211
votes
19answers
144k 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 ...
17
votes
40answers
47k views
How to Install a Broadcom Wireless Driver
I'm having serious problems installing the Broadcom drivers for Ubuntu. It worked perfectly on my previous version, but now, it is impossible. I'm a user with no advance knowledge in Linux, so I would ...
69
votes
5answers
77k views
Why does an Ubuntu 12.10 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
an Ubuntu 12.10 guest
All the guests have the same VirtualBox ...
59
votes
5answers
184k views
How do I change the grub boot order?
I have both Windows 7 and Ubuntu installed on 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 ...
74
votes
4answers
191k views
What is the correct way to install ATI Catalyst Video Drivers (fglrx)?
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 ...
277
votes
11answers
246k 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?
50
votes
5answers
37k views
How can I accept 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 ...
168
votes
4answers
123k 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?
217
votes
11answers
340k 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 ...
69
votes
4answers
72k views
Installing Ubuntu on a Pre-Installed UEFI Supported Windows 8 system
I bought a computer with pre-installed 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 ...
134
votes
5answers
158k views
How do I upgrade from 10.04 or 11.10 to 12.04?
I am using Ubuntu 11.10.
Please outline the different ways I can upgrade to 12.04.
10
votes
5answers
97k 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 ...
84
votes
9answers
131k views
How can I install Sun/Oracle's proprietary Java 6/7 JRE or JDK?
I want to install Oracle's JRE and to update their lastest version through Update-Manager everytime they released. Is there a Ubuntu package that is provided by Canonical or Oracle?
Before release ...
14
votes
2answers
56k views
How do I install drivers for the Atheros AR8161 Ethernet controller?
I have installed Ubuntu 12.04-64 bit on my Lenovo IdeaPad laptop, and the wired Ethernet (LAN) connection doesn't work.
Running the lspci -vv | grep Atheros command from the terminal shows me I have ...
26
votes
7answers
62k views
How do I install VMware Player?
I can't install VMwarePlayer 4.0.3 on Ubuntu 12.04 64Bit. For Version 4.0.2, I found a script that I have to run and after that i could install 4.0.2. Is there an similar solution for Version 4.0.3?
76
votes
23answers
101k 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 my computer 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 ...
34
votes
8answers
72k views
Can't install ATI proprietary drivers in 12.10
I have a laptop with ATI Radeon 6770M HD Hybrid graphics card. In Ubuntu 12.04, I installed the fglrx driver through "additional drivers" and it worked. (I can even switch GPUs). But in the new Ubuntu ...
43
votes
6answers
39k 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 ...
46
votes
12answers
109k views
How do I add a DNS server via resolv.conf?
Is /etc/resolv.conf useless in 12.04?
I see that DNS server info is stored in Network Manager now. The nmcli command line tool can list that for you.
If I want to add one more dns server, will ...
42
votes
11answers
83k views
How do I fix a “Could not get lock /var/lib/dpkg/lock” problem?
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 another process using it? How can I fix ...
28
votes
4answers
62k views
Authentication token manipulation error
I forgot my Ubuntu password so I booted into recovery and dropped into a root shell prompt and this is what happened:
root@username-PC:~# passwd username
Enter new UNIX password:
Retype new UNIX ...
6
votes
5answers
102k views
How to fix "error: unknown filesystem. grub rescue>
I'm not exactly sure what I did. I believe I installed ubuntu over windows on my acer netbook. I then tried to install linux mint, but it wouldn't start installing.
I turned the netbook off and back ...
5
votes
3answers
70k 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 ...
55
votes
10answers
58k views
Desktop does not show when I installed nvidia drivers!
The desktop does not show after I installed nvidia experimental drivers. I tried nvidia simple proprietary drivers, and they did not work either.
Here is how it looks. This is not cropped or any ...
119
votes
10answers
33k views
How to change tooltip background color in Unity?
In a lot of applications the tooltips are just plain ugly (White text on black background, way too much contrast) or even unreadable (black or dark blue text (Hyperlinks) on black background). I want ...
17
votes
1answer
60k views
How to solve jitter (or stutter) playback via Chrome flash plugin?
Since the update to 12.04, there's been a problem specifically related to audio/video playback in Google Chrome.
The problem only affected the Google version but not the Chromium nor the Firefox ...
114
votes
8answers
276k views
How do I install and use the latest version of GNOME?
I followed the instructions for compiling GNOME Shell and it did compile with a few errors here and there but it didn't run. I installed GNOME Shell using sudo apt-get install gnome-shell but I got ...
18
votes
6answers
33k views
12.04 Stuck at 'VMware easy install'
I have a Mac OS X and VMware Fusion. I did a fresh install of 12.04. I do not have VMware Tools installed.
I read that I do not have to log in at the command window, that I have to wait for ...
172
votes
14answers
129k views
How can I edit/create new launcher items in Unity by hand?
Will Unity allow making custom launcher icons from .desktop files or via menu editing system? (Right now the launcher doesn't give the option to "keep in launcher" on all programs.
For some programs ...
151
votes
16answers
142k 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?
18
votes
11answers
32k 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 ...
16
votes
8answers
30k views
VirtualBox '/etc/init.d/vboxdrv setup' issue
So I 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 ...
49
votes
4answers
29k views
138
votes
2answers
171k views
Can I move the Unity launcher?
I can’t get used to the new Unity system. I’d like to move the left Unity panel to the bottom of screen (like Windows 7 – more similar is better).
But I can't find a way. Is it possible?
21
votes
10answers
91k views
How to remove Ubuntu and put Windows back on?
I know nothing at all about Linux, and I desperately need to get my laptop back up and running again with Windows, how do I remove Ubuntu?
84
votes
13answers
132k 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 ...
89
votes
14answers
51k views
How to pin Eclipse to the Unity launcher?
How can I pin eclipse indigo 3.7 I have 'installed' at /opt/ to the taskbar?
I have tried launching eclipse and right-clicking to choose the 'keep in launcher' option. But when I click that icon, ...
10
votes
1answer
46k views
How can I install themes?
How can I install themes in ubuntu 12.10 ??
For example how can I install this themes on ubuntu
GrayDay or Elegant+Eggplant
thank you in advanced
17
votes
4answers
41k 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 ...
34
votes
7answers
99k views
How to format a USB or external drive?
Using Ubuntu 11.10, how do I format an external or USB drive? I don't find an option to 'format' when I right click. In the new version, the drives don't come up on the desktop but instead come on ...
44
votes
6answers
92k views
How can I install on a non-PAE CPU? (error “Kernel requires features not present on the CPU: PAE”)
On my old Toshiba Tecra A2 laptop, I tried installing Ubuntu 12.04 Beta 2.
After burning it to a CD, I tried booting from the CD and got the message:
This kernel requires the following features not ...
50
votes
4answers
40k 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?
135
votes
36answers
90k 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 ...
85
votes
4answers
182k 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 then login again. Is that normal?
Also, can I set a newly added user as a sudoer or ...
15
votes
3answers
30k views
How do I get an Acer Npilfy 802.11 wireless card working?
My Laptop is Acer 5742G with "Npilfy 802.11 wireless".
I have both windows 7 and Ubuntu 12.10
Earlier when I had Ubuntu 12.04, the wireless was working fine, but after installing 12.10 wireless is ...
58
votes
8answers
96k views
How do I increase the hard disk size of the virtual machine?
I have run out of space on my WinXP virtual machine, which I only gave 10 GB space for when I created it. Is there an easy way to increase it to, say, 20 GB? I can't see any obvious option in ...
