Questions tagged [18.04]

Seventh LTS (Long Term Support) release of Ubuntu, code-named "Bionic Beaver". Released on 26th April, 2018. Will go End Of Life (EOL) April 2028. Only use this tag for version-specific questions.

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270
votes
12answers
163k views

How can I remove Amazon search results from the dash or disable the feature?

How can I disable Amazon search results in the Dash?
106
votes
11answers
137k views

Enable fractional scaling for Ubuntu 18.04

I recently installed Ubuntu 18.04 and discovered that the fractional scaling option that was in 16.04 is no longer there. 200% is too big for my display, and this answer didn't work for me (the ...
96
votes
10answers
39k views

How can I install pdftk in Ubuntu 18.04 and later?

Is there any chance of getting pdftk working in Ubuntu 18.04? I need this for creating PDF files with a watermark in shell. Or, does anybody know a working alternative to pdftk to generate a PDF ...
91
votes
3answers
73k views

Right click not working on Ubuntu 18.04

I have installed Ubuntu 18.04 LTS on my HP Pavilion series laptop. After installing this version of Ubuntu, right click is not working of my touchpad. How can I solve this? BTW: This question does ...
90
votes
9answers
22k views

The following signatures were invalid: EXPKEYSIG 1397BC53640DB551

This is Issue 952287: [User Feedback - Stable] Reports of Chrome for Linux failing to install/update due to expired GPG signing key Today, running apt in all my machines gives this error with the ...
71
votes
2answers
55k views

18.04 ctrl+shift to change language

Can I use Ctrl+Shift for changing languages? I can't set this hotkey for changing keyboard languages. At this moment Alt+Shift switch languages, but I can't see this hotkey in keyboard hotkeys list ...
58
votes
8answers
127k views

How do I Install CUDA on Ubuntu 18.04?

Is there any tutorial to install CUDA on Ubuntu 18.04? The instructions on the Nvidia website for 17.04 and 16.04 do not work for 18.04. I get a message telling me to reboot then re-run the ...
58
votes
6answers
51k views

“Package 'docker-ce' has no installation candidate” in 18.04

I'm following the official Docker installation guide for docker-ce on Ubuntu. When I get to sudo apt install docker-ce I get E: Package 'docker-ce' has no installation candidate: $ sudo apt-get ...
55
votes
3answers
37k views

How to Encrypt /home on Ubuntu 18.04?

Disappointed to see that the 18.04 installer no longer offers the option to encrypt the home directory. According to this bug report referenced in the installer, the recommended method for encryption ...
53
votes
2answers
91k views

ifconfig missing after Ubuntu 18.04 install

I've just installed Ubuntu 18.04 and selected "minimal install". I then tried to run ifconfig in the terminal and got the following message -bash: ifconfig: command not found How come the net-tools ...
47
votes
6answers
23k views

Ubuntu 18.04 - Dell XPS13 9370 no longer suspends on lid close

This was working perfectly on 17.10 but after upgrading to 18.04 yesterday, when the lid is closed the screen turns off but doesn't suspend properly. I travel around a lot and immediately noticed the ...
47
votes
2answers
14k views

Authentication Failure Switch to greeter

I'm experiencing a very annoying problem on Ubuntu 18.04. Whenever my laptop resumes after being suspended I'm completely unable to login and get the error; Authentication Failure Switch to greeter ...
45
votes
2answers
38k views

How to install pdftk on Ubuntu 18.04 Bionic? [duplicate]

I tried to install pdftk in Ubuntu 18.04. It seems to be that the package is missing from official repositories. How can I install pdftk?
44
votes
4answers
18k views

How to separate opened windows in alt+tab switcher in Ubuntu 18.04?

When I have multiple windows of an application opened e.g. Chrome main window and Incognito window, and I press Alt+Tab to switch between them, I see only one Chrome icon. I have to then press down ...
44
votes
6answers
69k views

How to diagnose/fix very slow boot on Ubuntu 18.04

There is a long time where SSD does nothing. How can I find the fault and fix it ? Already checked /etc/fstab, no swap or anything wrong there (32GB of RAM, no swap) [ 2.173492] usb 2-1.6: New ...
42
votes
4answers
9k views

How to enable the Edit button in Shutter?

I am trying to enable the Edit button in Shutter. I installed the application from Ubuntu Software and are using Ubuntu 18.04. After taking a screenshot the Edit button is disabled. And when hovering ...
40
votes
2answers
5k views

Cannot open calculator app from keyboard calculator button

If I press the calculator button in my keyboard, the gnome calculator app doesn't appear. I have double checked that the shortcut is ok in the settings app keyboard bindings config pane.
40
votes
6answers
27k views

WiFi randomly disconnected on Ubuntu 18.04 LTS

I installed Ubuntu 18.04 LTS in this week and now I have a problem with wifi connection. The WiFi connection auto disconnected every 5 - 10 minutes but wifi signal is still fine. I did a search, found ...
39
votes
3answers
20k views

Skipping acquire of configured file 'contrib/binary-i386/Packages' as repository … doesn't support architecture 'i386'

I installed Ubuntu 18.04 and then while installing Virtualbox i get the 'i386' error message after I did: $ sudo apt-get update Get:1 http://nl.archive.ubuntu.com/ubuntu bionic InRelease [242 kB] Hit:...
36
votes
8answers
21k views

App Indicators not working on Ubuntu 18.04

This is with a fresh installation of Ubuntu 18.04 using the default GNOME Desktop. The "tray icons" simply don't appear in the top panel. "Ubuntu appindicators" shell extension is active, but doesn't ...
36
votes
4answers
6k views

TTY doesn't wait for password

I upgraded from 16.04 to 18.04. When I press Ctrl+Alt+F3 I get the terminal which prompts for the username. When I type my username and press Enter, it doesn't wait for my password (its as if I ...
35
votes
5answers
7k views

Inverted Horizontal scrolling ubuntu 18.04

I recently upgraded from 17.10 to 18.04 and the horizontal scrolling is inverted. Natural scrolling does not affect it in any way, suggestions on how to change it back? (swipe rigth to go left)
34
votes
6answers
63k views

Ubuntu 18.04: switch back to /etc/network/interfaces

Starting sometime around Ubuntu 18.04, the Ubuntu devs stopped using the classic /etc/init.d/networking and /etc/network/interfaces method of configuring the network and switched to some thing called ...
34
votes
1answer
11k views

What happened to the Nautilus feature “Create Link” in Ubuntu 16.10 and newer?

I have upgraded from Ubuntu 16.04 LTS to Ubuntu 18.04 LTS. I was surprised to see that the context menu entry "Make Link" (keyboard shortcut Ctrl+M) in Nautilus doesn't seem to exist anymore. It used ...
33
votes
10answers
6k views

Will ls always list the files that rm will remove?

Something I feel I ought to know for sure: if I ls <something>, will rm <something> remove exactly the same files that ls displayed? Are there any circumstances where rm could remove files ...
33
votes
3answers
28k views

How to scale the enormously sized desktop icons in GNOME 3.28?

I just upgraded to 18.04 from 16.04. I am using gnome-shell, gnome-ubuntu-desktop. After upgrading the icon size on desktop are very large. I am unable to find my option to decrease the size in ...
33
votes
9answers
46k views

No internet after upgrade from 16.04 to 18.04

After the upgrade I noticed that I don't have internet access. The wired network and the wifi settings looked good, but it didn't work. After the login the system always switched itself into airplane ...
32
votes
3answers
47k views

Enable Hibernate in Ubuntu 18.04 LTS [duplicate]

How can I set Hibernation in Ubuntu 18.04 LTS (laptop)? When I open the Power option > When the Power Button is pressed, I just see the following options: Suspend Power OFF Nothing But does not ...
31
votes
3answers
12k views

No secondary button (right click) on touchpad

I'm experiencing a serious problem with the new Ubuntu 18.04: System Dell XPS 13 with a freshly installed Ubuntu 18.04 LTS. Problem description The touchpad provides only primary button (single ...
30
votes
7answers
47k views

How to turn off screen rotation in Ubuntu 18.04 LTS?

In Ubuntu 17.04 there was 'Rotation' menu in Display tab. But now in new version of Ubuntu, there's still a Display tab but no more rotation menu. Now I can't turn that off again since I upgraded to ...
30
votes
2answers
22k views

Problem with k3b in 18.04 releases “ cdrecord has no permission to open the device”

I have this problem with k3b in 18.04 releases (Ubuntu, Kubuntu, KDE Neon...) In oldest releases I do not have this problem: cdrecord has no permission to open the device You may use K3bbsetup to ...
30
votes
2answers
23k views

Is TRIM enabled on my Ubuntu 18.04 installation?

I know that weekly TRIM is enabled by default from 14.10 onwards. Source: How to enable TRIM? But running sudo nano /etc/cron.weekly/fstrim returns an empty file. Also tail -n1 /etc/cron.weekly/fstrim ...
29
votes
9answers
22k views

Ubuntu 18.04 Unable to install Viber

I am trying to get Viber on my new Ubuntu 18.04 but I get these error ... sudo dpkg -i Downloads/viber.deb (Reading database ... 138136 files and directories currently installed.) Preparing to ...
29
votes
2answers
14k views

Boot hangs for 30 seconds at “Begin: Running /scripts/local-premount”

After upgrade from Ubuntu 17.10 to 18.04 the bootprocess takes 30s longer than before. it stops for 30 seconds at the step Begin: Running /scripts/local-premount Then it continues. At first it ...
29
votes
3answers
4k views

After most recent kernel update (4.15.0-44-generic) my tablet freezes whenever plugged into docking station

I performed the most recent kernel update on my Dell 5290 2-in-1 earlier today. But moments after I plug it into its docking station, the screen flickers, blanks and freezes. The only item left on ...
28
votes
4answers
17k views

Disable password request from from suspend - 18.04

How can I disable password request after suspend in v. 18.04? I have already turned off the screen lock but that didn't fix it. I am brand new using Ubuntu. There seems to be lots of info on how to ...
28
votes
1answer
19k views

libdvd-pkg: `apt-get check` failed, you may have broken packages. Aborting

FYI: I am using Kubuntu 18.04 I keep getting the following error when I install apt-transport-https Things I have already tired to fix this error are: sudo apt-get autoremove libdvd-pkg sudo apt-...
28
votes
3answers
6k views

How to set a Compose Key in Ubuntu 18.04

Now that Unity is gone, the usual way of setting a Compose Key (via Keyboard Preferences > Layout) no longer works (because in Ubuntu 18.04, Devices > Keyboard has no Layout tab). How do we set a ...
28
votes
16answers
44k views

Ubuntu 18.04 stuck at shutdown

I am having this weird problem in Ubuntu 18.04. My laptop gets stuck at the shutdown screen every time I use shutdown and I have to manually press the power button for 5 seconds to turn the machine ...
28
votes
3answers
16k views

Nautilus-actions in 18.04

Nautilus-actions configuration tool, which was needed in order to have context menu actions in Nautilus doesn't seem available in the Software center in 18.04 LTS. (This seemed reported as a bug here ...
28
votes
3answers
9k views

Should I be offered the option to upgrade to 18.04.1?

I understand that the first point release of Ubuntu 18.04, namely 18.04.1 is now available and that my system should now offer it as an update. My current OS version is 16.04.5 LTS. In System ...
28
votes
1answer
2k views

How to prevent new windows from stealing focus?

Typical situation is that I type something (worst case is my password) in some application, when some other application pops up a window and steals the focus, so my typing (password) goes to something ...
27
votes
5answers
17k views

Host name reverts to old name after reboot in 18.04 LTS

This may be related to running 18.04 LTS as a virtual machine (Host is Win 2016 DC) but I can't figure it out how. I have tried every method of I know of to change the hostname but it always reverts ...
27
votes
2answers
35k views

Install gcc-8 only on Ubuntu 18.04?

I just installed Lubuntu 18.04 LTS. There are two options for installing gcc: gcc-7 and gcc-8. Both are available from apt-get install out of the box. Even after I installed gcc-8, the system is ...
27
votes
11answers
21k views

Ubuntu 18.04 - Ethernet disconnected after suspend

Ethernet does not resume after suspend. sudo service network-manager restart does not work. Only restart solves problem.
27
votes
3answers
4k views

Unable to login to account in ubuntu 18.04 vmware workstation 15, after update

I installed the latest updates from the software update center today (I update when ubuntu displays a notification), restarted the machine and now it's unable to boot properly. The best screen I can ...
27
votes
10answers
38k views

How to open Nautilus (File Manager) preferences?

Please could you tell me where can I find the File Manager Preferences in Ubuntu ... (now for 16:04 LTS). The menu bar has disappeared from Nautilus, as also have the resize handles and the top-bar ...
26
votes
5answers
23k views

Installing nvidia drivers on 18.04

all. I'm trying to fix my system so I can install the nvidia drivers but it seems to get stuck for some reason. I have tried manually removing the downloaded files from /var/cache/apt/archives/...
26
votes
4answers
12k views

Turn off error sound on Ubuntu 18.04

How to turn off Ubuntu error sound(specially on terminal) in Ubuntu 18.04?
26
votes
3answers
8k views

How can I replace Snap application such as Gnome Calculator with a deb?

So, thanks to this bug: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1575053 I would rather not use Snap packages. The only one that I really use is Calculator but I would like to replace all ...