All Questions
56,669
questions
1698
votes
29
answers
1.8m
views
"The following packages have been kept back:" Why and how do I solve it?
I just added a PPA repository for the development version of the GIMP, but I get this error:
$ apt-get update && apt-get upgrade
...
The following packages have been kept back:
gimp gimp-...
- 23.6k
91
votes
1
answer
249k
views
How do I boot into a root shell?
When booting to the graphical desktop fails we sometimes are recommended to boot into a "root shell" or to boot in "recovery mode".
How do I do that?
- 142k
305
votes
11
answers
501k
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 (...
289
votes
16
answers
904k
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?
- 3,240
19
votes
9
answers
29k
views
How do I install Ubuntu from an USB drive / create a live USB-stick in Windows?
I tried to use the usb-creator.exe from Ubuntu 10.10 desktop i386 ISO image and it does create an USB stick that doesn't boot. When I try to boot from it I get:
Operating System not found.
I try ...
- 9,888
70
votes
7
answers
133k
views
Apt/Synaptic needs to reinstall package but can't find the archive for it
Running Synaptic I get the following error message:
E: The package hl1440lpr needs to be reinstalled, but I can't find an archive for it.
E: Internal error opening cache (1). Please report.
Upon ...
- 721
434
votes
10
answers
387k
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?
- 9,857
642
votes
8
answers
1.3m
views
How do I set up a Cron job?
I want to schedule a task to run on a regular basis and have heard that Cron is the way to do this.
How do I add Cron jobs in Ubuntu?
- 7,015
26
votes
5
answers
66k
views
Installing Wi-Fi driver for Realtek Semiconductor RTL8723DE Device [10ec:d723]
How do I install Wi-Fi drivers for Realtek RTL8723DE device in Ubuntu 16.04?
lspci -v | grep -i network
02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device d723
- 261
123
votes
10
answers
107k
views
How to install Firefox as a traditional deb package (without snap) in Ubuntu 22.04 or later versions?
As far as I see in the ongoing development for 22.04 Jammy, Firefox is a Snap package.
The related Deb package in apt is just a shortcut/link to the that snap version.
I prefer my installation not to ...
- 2,585
403
votes
5
answers
343k
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.
┌─────────────────┤ Configuring ttf-mscorefonts-installer ├─────────────────┐
│ ...
- 4,553
116
votes
8
answers
459k
views
How can I resize an LVM partition? (i.e: physical volume)
I want to shrink my second (LVM) partition, in order to create a new partition in the newly freed space. I am using the Live CD to do so, because I know I can't resize/move this partition while it is ...
- 1,261
130
votes
3
answers
547k
views
How to create UEFI-only bootable USB live media?
Having live media that can boot both ways can be a problem when installing Ubuntu onto currently available Windows 8 computers.
In other words the key advantage to creating UEFI-only bootable USB ...
- 28.8k
100
votes
9
answers
89k
views
How can I play encrypted DVD movies?
My machine can't play encrypted DVDs on a fresh install. How do I add this capability? Another useful bit of information would be what programs are best for playing DVDs, once I'm able to do so. ...
- 3,193
8
votes
0
answers
6k
views
Boot Ubuntu from external drive [duplicate]
I have been trying for a week to install (not live cd) Ubuntu on an external drive.
I am totally new to Linux and would love to try it out. That's why I want to install it on an external drive and ...
- 81
177
votes
6
answers
446k
views
How to create a Wi-Fi Hotspot (in Access Point mode)?
How to setup an Access Point (AP) mode Wi-Fi Hotspot?
Point to be noted: Wireless access points aren't the same as ad hoc networks. They differ significantly. In short, ad hoc networks aren't ...
- 21.4k
131
votes
12
answers
216k
views
How to automount NTFS partitions?
I have two NTFS partitions, and I don't want to mount them manually every-time I start Ubuntu.
How can I do this?
Is there a tool or a code to use?
If so, is it safe to automount? specially when ...
- 16.4k
52
votes
10
answers
30k
views
How to convert Wubi install into regular install?
I have installed Ubuntu on my D: partition using Wubi. Is there any way in which I can remove my Windows from C: drive and move my existing Ubuntu installation to C: drive and make it a regular ...
- 4,516
136
votes
10
answers
410k
views
How to set up USB for Virtualbox?
I'm using Ubuntu Maverick and Virtual Box 3+. I have Windows 7 Ultimate. The problem is that it doesn't detect USB drives in Windows 7, but USB peripherals (mouse + keybord) are working.
I followed ...
- 1,483
73
votes
10
answers
119k
views
How to run scripts without typing the full path?
I'd like to know if there is a way to run program/shell script without typing full path:
/opt/idea/bin/idea.sh
- 731
42
votes
3
answers
164k
views
How do I reset a lost password (using recovery mode requires me to type the password)?
I need to reset my password. I have followed these steps:
How do I reset a lost administrative password?
However, then I go to "root" or "netroot" recovery options, it tells me:
Give root password ...
- 527
132
votes
6
answers
101k
views
What is the easiest way to resolve apt-get BADSIG GPG errors?
I frequently cross this issue, and always have to google for an answer. Does anyone have a permanent fix for BADSIG errors from apt-get?
W: GPG error:
http://download.virtualbox.org lucid
...
- 5,878
102
votes
2
answers
38k
views
What are some of the issues with CCSM and why would I want to avoid it?
I've seen some people complaining about how unstable CompizConfig Settings Manager ("CCSM") is and how it can break people's desktops if they're not careful.
What are some of the known problems with ...
- 71.8k
255
votes
16
answers
451k
views
How do I disable X at boot time so that the system boots in text mode?
Is it possible to disable X at boot time? I'm setting up a server so it would be nice if it wouldn't load the graphical interface every time I boot.
- 58.8k
247
votes
13
answers
1.4m
views
Uninstall GRUB and use Windows bootloader
I have Windows 8 pre-installed, and then I installed GRUB with Ubuntu. Ubuntu is not my thing, so now I want to remove it along with GRUB. From what I have learned, with UEFI, GRUB does not overwrite ...
- 2,625
163
votes
7
answers
1.0m
views
How can I uninstall a nvidia driver completely ?
As expected, Nvidia drivers have reduced my customizations. I can't login to Unity 3D session. I can't find any content to help me to uninstall the driver and I don't know what to do as I have never ...
- 3,471
43
votes
4
answers
86k
views
How to install latest HPLIP on my Ubuntu to support my HP printer and/or scanner?
Let's assume that one has some modern HP printer and/or scanner which is not supported by HPLIP package from official repository.
Currently Ubuntu versions have the following versions in universe ...
- 99.9k
121
votes
12
answers
52k
views
How can I use Netflix on Ubuntu?
Is there a way to stream Netflix content to my Ubuntu machine?
- 1,315
27
votes
3
answers
103k
views
How do I install the VirtualBox version from Oracle to install an Extension Pack?
I downloaded VirtualBox OSE from the Ubuntu Software Center but it seems that that version is limited. I prefer to have the complete version and don't really care if it's closed source or not.
Can I ...
- 8,017
528
votes
10
answers
1.1m
views
How do I create a permanent Bash alias?
I would like to create an alias to rm command in order to have a confirmation message after executing this command. So I am creating an alias like this alias rm='rm -i'. But as far as I know this is a ...
- 12.3k
286
votes
3
answers
396k
views
How do I run specific sudo commands without a password?
On one particular machine I often need to run sudo commands every now and then.
I am fine with entering password on sudo in most of the cases.
However there are three sudo commands I want to run ...
- 11k
24
votes
8
answers
57k
views
Failed to download repository information due to missing CDROM
When updating I got this error message:
W:Failed to fetch cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Release amd64 (20111012)/dists/oneiric/main/binary-i386/Packages Please use apt-cdrom to make this ...
116
votes
6
answers
736k
views
How to install Ubuntu on VirtualBox?
I would like to know if anyone can help me with installing Ubuntu on VirtualBox
- 1,161
69
votes
7
answers
183k
views
How to make a persistent live Ubuntu USB with more than 4GB
I want to make a persistent live Ubuntu USB drive with more than 4GB of storage.
I know there is an option of installing directly on the drive but I don't want to do this as it will restrict the ...
- 793
939
votes
9
answers
1.5m
views
How to enable or disable services?
I read about how to enable and disable services in Ubuntu and it seems that there are different possibilities to manage them.
The first method I found is update-rc.d to add new services to startup, ...
- 33.2k
124
votes
10
answers
34k
views
Strange artifacts along window borders after waking computer from sleep mode
NB: Nvidia has released an official fix; please see ByteCommander's answer, my own answer and/or Kaz Wolfe's answer.
Upon waking up Ubuntu 16.04 from Suspend, the following graphical glitches appear ...
- 14.8k
15
votes
3
answers
51k
views
How to download all required Ubuntu drivers
Is there a package of Ubuntu drivers as driver pack solution? I tried to search for it, but I did not find it. If there is, how can I easily get it?
- 177
260
votes
6
answers
158k
views
How to understand the Ubuntu file system layout?
In Windows there’re perhaps only a couple of important folders (by important I mean important in my logical picture of the Windows file system) in the installation drive (in my case C:\). Namely ...
- 2,889
741
votes
9
answers
2.0m
views
What is the correct way to completely remove an application?
I've searched the net for such information and found different command lines, like these ones:
sudo apt-get remove application
sudo apt-get remove application*
sudo apt-get remove --purge ...
- 7,853
224
votes
12
answers
830k
views
How to make a disk image and restore from it later?
I'm a new Linux user. I've reinstalled my Wubi from scratch at least ten times the last few weeks because while getting the system up and running (drivers, resolution, etc.) I've broken something (X, ...
- 10.5k
50
votes
5
answers
15k
views
Basic desktop actions are not available on Ubuntu 20.04
In Ubuntu 20.04, on the desktop, there is a number of actions I wish I could do, such as, by order of importance :
use keyboard shortcuts such as select all, copy / paste.
use drag & drop with ...
- 654
217
votes
5
answers
672k
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 ...
- 12.8k
188
votes
4
answers
631k
views
E: Unable to correct problems, you have held broken packages
I am using Ubuntu 13.04 which I installed few days back. I am trying to install nodejs and npm. I tried to install from command line first and then uninstalled it. Then something broke.
sudo apt-get ...
- 1,983
39
votes
7
answers
90k
views
Windows 8 removes Grub as default boot manager
I have a Sony VAIO S series with Windows 8 preinstalled, and I installed Ubuntu 12.10 on a new partition. When the PC boots Grub is display, and I can choose between Windows 8 (didn't worked at the ...
- 762
213
votes
9
answers
366k
views
How do I add swap after system installation?
I did not create a swap partition during Ubuntu installation. Later, I freed up some space and made a swap partition. Now after each boot up, I am manually opening gparted to right-click the swap ...
user13593
46
votes
1
answer
340k
views
How to install the Boot-Repair tool in an Ubuntu live disc?
When the bootloader (GRUB) is broken, I cannot access neither Ubuntu nor Windows.
I heard that an easy solution to fix this is to use the Boot-Repair tool from an Ubuntu liveCD (or liveUSB).
What ...
- 3,615
1
vote
1
answer
3k
views
Installing all applications on a SSD disk and putting all files on HDD disk
I am entirely new to Ubuntu and my question here touches the somewhat confusing (at least for me) theme of disc partitioning.
I've recently bought a new laptop with 250GB SSD and 1TB HDD hard drives ...
- 123
53
votes
8
answers
319k
views
How do I get permissions to edit system configuration files?
I can't seem to edit and save config files in the root system (eg: /etc/dhcp/dhcpd.config); it just says "permission denied" or the save option is blocked in the text editor.
I'm pretty sure I'm a ...
- 845
27
votes
4
answers
108k
views
Acer Aspire E15 will not dual boot
I installed Ubuntu 14.04 onto my Acer Aspire E15. The PC has a 500 Gigabyte HDD.
During the installation it divided the HDD into separate partitions. However every time I turn on the PC it goes ...
- 861
25
votes
9
answers
77k
views
Wi-Fi not working on Lenovo ThinkPad E570 (Realtek RTL8821CE)
We just bought a Lenovo ThinkPad E570 (which is supposed to have the Intel 8265 for wireless). This laptop was bought in part because it is certified to run Ubuntu and as such to me at least it would ...
- 8,920