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Questions tagged [18.04]

New questions about 18.04 are now off-topic, unless asking how to update to a supported version. Seventh LTS (Long Term Support) release of Ubuntu, code-named "Bionic Beaver". Released on April 26, 2018. Reached End of Standard Support (ESS) in April 2023.

Ubuntu 18.04 (Bionic Beaver) was released on April 26, 2018 and entered ESM in April 2023.

New questions on Ubuntu 18.04 are off-topic, unless you are asking how to upgrade to a version in current standard support.

Release notes: Bionic Beaver

  • Two years of support included hardware updates
  • Remaining three years consisted of maintenance upgrades.

Notable new features:

  • Linux kernel 4.15
  • Preliminary support for WiFi 6 (802.11ax)
  • BTRFS swap file support
  • ifupdown has been deprecated in favor of netplan.io and is no longer present on new installs

Flavors and editions:

Ubuntu Flavors available under 18.04 LTS:

Ubuntu 18.04 LTS variants are not commercially supported by Canonical.

Ubuntu Editions available under 18.04 LTS:

Ubuntu releases:

15423 questions
186
votes
13 answers

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 options didn't change after running the command). Is…
Mitch
  • 2,231
180
votes
2 answers

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-get install libdvd-pkg sudo apt-get update sudo…
devguy
  • 5,498
173
votes
6 answers

Unable to install "": snap "" has "install-snap" change in progress

I just finished the installation of the Ubuntu 18.04, but whenever I try to install any application from Ubuntu Software the same error occurs (for example "vlc"): unable to install "vlc": snap "vlc" has "install-snap" change in progress I hope…
CluelessUbuntuuser
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173
votes
18 answers

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 with a watermark in shell? I already check/try out…
WiKrIe
  • 1,969
171
votes
3 answers

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 package is not installed by default any more?
JiiB
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143
votes
8 answers

"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 update Hit:1 http://gb.archive.ubuntu.com/ubuntu bionic…
Robin Winslow
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140
votes
3 answers

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 or in gsettings list-recursively …
Hayate
  • 1,503
133
votes
4 answers

Ubuntu Server 18.04 LVM out of space with improper default partitioning

I installed Ubuntu Server 18.04 with the LVM option and left the default partition setup. Now my main drive only has 4GB in a 1TB hard drive. How can I fix this without starting from scratch? Results of df -h : Filesystem …
CyborgDroid
  • 1,443
125
votes
4 answers

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 key and then right (or left) to switch to the…
Mazhar
  • 1,353
116
votes
8 answers

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 some answers for older versions of Ubuntu and…
Cảnh Đinh Văn
  • 1,265
114
votes
19 answers

apt-get update failed because certificate verification failed because handshake failed on nodesource

Running sudo apt-get update on my AWS EC2 Ubuntu 18.04.01 LTS instance fails: Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown when trying to access the deb.nodesource.com/node_10.x bionic…
Joe
  • 1,279
114
votes
3 answers

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 not have any solution which which is working for…
sam
  • 2,836
111
votes
7 answers

How to insert an emoji into a text in Ubuntu 18.04 and later?

What are the possibilities to insert, choose and use an emoji in Ubuntu 18.04 and later?
Filbuntu
  • 13,891
108
votes
4 answers

System program problem detected?

I keep getting, since several days, "System program problem detected" error message: I always clicked on Report problem button but nothing happens. I also run update and upgrade everyday. What causes this ? How to get rid of it ?
Billal BEGUERADJ
  • 6,361
105
votes
8 answers

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 Google PPA (for google-chrome): me@mymachine:~$ sudo…
Leo
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