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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

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Unable to install bcrypt on ubuntu 20.04

My project has ruby 2.6.5, rails 6 and when i tried to run bundle install, bcrypt gem is not installing. I tried sudo apt-get install ruby-dev and sudo apt-get install build-essential commands to resolve the issue and they were not helpful. Any one…
Mahesh Babu
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strrev() function can't be used even after including string.h in Ubuntu 20.04, compiler gcc 9.3.0. What can I do?

I am unable to use strrev() function even after including string.h in Ubuntu 20.04. Compiler says undefined reference to strrev(), but strlen() and other functions work. What should I do?
Anurag Pathak
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How does my Windows computer running WSL2 know which OS kernel to run a program on?

How does my Windows computer that is running WSL2 know which OS kernel (Windows or Linux) to execute a program with? I know that WSL2 is essentially a lightweight VM but idk how to leverage this knowledge. I thought it might depend on whether or not…
Jason V
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PURE-FTPd and Apache userdir | how to make public_html directory in home automaticly

I am using an Ubuntu 20.04.2 LTS Server and Apache 2.4.41. I´ve installed pureFTPd with mySQL and inserted some test users. The users register in a frontend and then they are created in the SQL Database via PHP. It works fine. But I want all users…
Maximilian Schüller
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Unable to install Openstack with Devstack on Ubuntu 20

I have been trying to install Openstack on Ubuntu 20 O.S VM in Virtualbox and getting the following error. [Call Trace] ./stack.sh:1311:start_glance /opt/stack/devstack/lib/glance:480:die [ERROR] /opt/stack/devstack/lib/glance:480 g-api did not…
Joselet K Devasia
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Getting error in Jupyter Notebook when importing opencv after installation: libGL.so.1: cannot open shared object file: No such file or directory

I have installed python3 in my ubuntu 20.04LTS operating system. I have also installed the Jupyter notebook directly from the snap store. Now I am trying to install OpenCV from jupyter notebook using: pip install OpenCV-python. I have also tried:…
UJM
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Cannot connect to Postgresql using the terminal in Ubuntu 20

I am using postgresql 13. When I type psql I get this: psql: error: could not connect to server: Ficheiro ou pasta inexistente Is the server running locally and accepting connections on Unix domain socket…
Diego Alves
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Zabbix upgrade from 4.0.21 to 5.2 mysqlversion error

Good morning Dear. I am having a problem updating my Zabbix server. Currently I have running the zabbix server version "zabbix_server (Zabbix) 4.0.21" with Ubuntu 16.04 xenial. I want to update it to zabbix server 5.2 with Ubuntu 20.04 focal. I…
Tomas Leguizamon
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Why does www-data need execute access to write uploaded files to a directory?

When anyone learning approaches the task of setting permissions on a media upload folder that is destined for public access they might instinctively think that it should be set to 777 or 666 due to all the incorrect tutorials that exist out in the…
Ethan Aaron Vandal
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Ubuntu 20.04 - After suspense problem in chrome browser tabs

Ubuntu 20.04 - After suspense problem in chrome browser tabs, The tabs displayed with strange dots(like sand).It happens as well in visual studio code.
Ella
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VScode customize integrated terminal to not show all paths in the output

VScode version 1.52.1 Linux Ubuntu 20.04 LTS I would like to customize the output of the integrated terminal, see picture attached, virtual environment output, and other unnecessary path information in the output. Thank you in advance for your…
jairu
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capistrano deployment fails db:migrate after release upgrade to focal fossa

I just upgrade my server to ubuntu 20 LTS, Focal Fossa. Afterwards some stuff did not work as it should. One thing I would like to ask you for help is, that my Rails app is no longer deployable with capistrano. Right before the upgrade it worked. I…
Stephan Sinn
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failed to install R in Ubuntu 20.04 focal

i tried to install R on Ubuntu20.04 focal. but i got error "unmet dependencies". Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an…
kazuki
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Can't running my ubuntu 20.04 after installed rabbitMQ

I installed rabbitMQ on my ubuntu 20.04, but when i restart my computer it can't start correctly. My error message is : Failed to start RabbitMQ Messaging server. Do you have any idea what can i do?
takichy
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Can't install indy-sdk in ubuntu 20.04

I want to install indy-sdk in ubuntu 20.04, but I can't find any documentation about it. How can I install it?
Shubham Gupta
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