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Questions tagged [ubuntu-20.04]

Ubuntu 20.04 (Also codenamed Focal Fossa) is a Long Term Support (LTS) release of the Ubuntu operating system. QUESTIONS MUST BE PROGRAMMING RELATED.

The OS would be supported until 2025 by Canonical, it's manufacturer company.

Compared to the previous LTS version, the following notable changes happened:

  • Kernel upgrade from 4.15 to 5.4 .
  • ExFat is now supported.
  • No more 32 bit support.
  • Minor gnome upgrade (3.28 to 3.36)
  • System theme changed to Yaru, has three flavors: Light, Dark and Standard.
  • Notifications can now be muted in the Settings.
  • Dock can now be removed by the Extensions App.
  • New compression algorithms decrease installation time.
  • Booting better optimized, boots faster.
  • Wireguard is now supported, backported to kernel 5.4 .
  • More Snap App is supported.
  • Default is now Python3, although Python2 is still installable.
  • X11 fractional scaling.
  • Default Php version is now 7.4 (from 7.3).

References

1762 questions
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Error installing rails: ERROR: Failed to build gem native extension. Ubuntu 20.04

When I ran this command: gem install rails I got this output: ERROR: Error installing rails: ERROR: Failed to build gem native extension. current directory: /home/hizmarck/.rvm/gems/ruby-2.7.1/gems/nokogiri-1.10.9/ext/nokogiri …
hizmarck
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Cannot install bazel on Ubuntu 20.04 - invalid EXPKEYSIG

I was following the instructions on https://docs.bazel.build/versions/master/install-ubuntu.html#install-with-installer-ubuntu and trying to install bazel on Ubuntu. When I run step 2: sudo apt update && sudo apt install bazel I get: Get:1…
de1337ed
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2 answers

R load error - libproj.so.13: cannot open shared object file: No such file or directory

I am trying to install CRANs population genetics package hierfstat; however the following error with libproj.so.13 is printed: > install.packages("hierfstat") Installing package into ‘/home/ecoevo/R/x86_64-pc-linux-gnu-library/3.6’ (as ‘lib’ is…
Luis Rodrigo Arce-Valdés
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2 answers

Netcat throws a "getnameinfo: Temporary failure in name resolution" error

When I run the following command: nc -luvp 9090, I get the error: getnameinfo: Temporary failure in name resolution I've scanned the internet in search of an answer, but none of them were valid: https://github.com/bonzini/netcat/issues/2: not…
Jose Lopez Garcia
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2 answers

Ansible not reporting distribution info on Ubuntu 20.04?

Example on Ubuntu 18.04 reporting distribution info in 'ansible_facts': $ ansible -i hosts ubuntu1804 -u root -m setup -a "filter=ansible_distribution*" ubuntu1804 | SUCCESS => { "ansible_facts": { "ansible_distribution": "Ubuntu", …
JonB
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5
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2 answers

unable to start MongoDB server

I installed MongoDB in wsl using the official windows document here. I have created a path and can start the a DB instance using sudo mongod --dbpath ~/data/db but after following the docs further and adding the init script from here to start…
Mudassir Aqeel Ahmed
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1 answer

Failed to start up WiredTiger under any compatibility version. This may be due to an unsupported upgrade or downgrade

Getting this error on Ubuntu 20.04. I had origianlly installed the default version 3.0.6 on ubuntu. I have purged it and installed 5.0.9. But now I get this error in logs and mongod won't start. "Failed to start up WiredTiger under any compatibility…
chovy
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5
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2 answers

Install GDAL on LINUX Ubuntu 20.04.4LTS for python

I've been having a lot of problems with this install, especially with various unmet dependencies. these are my system infos: Linux Ubuntu 20.04.4 LTS 64-bit Gnome_Version: 3.36.8 Python using a "poetry environment" (uses pip) python Version:…
John Lloyd
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5
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3 answers

MySQL Workbench cannot connect to database in Ubuntu 20.04

I cannot open the local instance in MySQL Workbench in Ubuntu 20.04 after installing the MySQL server. I searched for some similar topics here but these did not help. Solution Found: I've found the solutions for this problem. This was because of…
Aditya Datta
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5
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4 answers

Flutter doctor can't find Android SDK, but everything is set

I'm on Ubuntu 20.04 LTE My Android SDK Location (shown in Android studio) is /home/myuser/Android/Sdk The error goes as follows: ✗] Android toolchain - develop for Android devices ✗ Unable to locate Android SDK. Install Android Studio from:…
Nenad Shone Misic
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1 answer

permission issue with npm init vue@latest in Ubuntu 20.04

I want to install vue 3 in a way that I choose the presets like this in my wsl2 ubuntu. What I did was: sudo mkdir /var/www/myproj.com cd /var/www/myproj.com npm init vue@latest - but this one has EACCESS: Permission denied error So I did sudo…
jthinam
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5
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1 answer

Cannot install php 8.0 on ubuntu, E: The repository 'https://ppa.launchpadcontent.net/ondrej/php/ubuntu jammy Release' does not have a Release file

I am trying to install LEMP on vultr's Ubuntu 22.04 server. I can install Nginx sudo apt install -y nginx - no problem. But when I try to install php8.0 by running these commands sudo apt install software-properties-common sudo add-apt-repository…
Guntar
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5
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1 answer

Cannot install Docker Compose v2: "Invalid Plugin, exec format error"

I installed the new docker compose CLI according to the instructions on docs.docker.com (Ubuntu 20.04) and cannot use the plugin. The command docker compose help shows: $ docker compose help docker: 'compose' is not a docker command. See 'docker…
AdrienW
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5
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2 answers

Certbot failed to authenticate some domains

This is my first time building a server and hosting it to AWS EC2. When running the command sudo certbot certonly --standalone or sudo certbot certonly --webroot I recieved this error below Certbot failed to authenticate some domains…
BeanieGod
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5
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2 answers

Cypress unable to open X Display in WSL2

I have followed every single step in this tutorial. Double Checked. Double Installed. https://nickymeuleman.netlify.app/blog/gui-on-wsl2-cypress But I get the error : [3974:0912/194522.792278:ERROR:browser_main_loop.cc(1402)] Unable to open X…
james
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