Revision as of 12:22, 28 June 2021

References

• Sisters Upgrade to Ubuntu 20.04 202102

Sanity Check

Make sure I really know what I have installed

 $ lsb_release -a
       No LSB modules are available.
       Distributor ID:	Ubuntu
       Description:	Ubuntu 18.04.5 LTS
       Release:	18.04
       Codename:	bionic

Upgrade Attempt

Note: All the windows and icons in this section are captured from Ubuntu 20.04.

In the lower left corner on the Ubuntu desktop I selected the "Show Applications" icon.

Performed a search for the "Software & Updates" application. See icon second from the left below.

In the "Software & Updates" application select the "Other Software" tab.

The updater may not know how to upgrade this software so deselect all other software, for example, the RealSeanse packages. Deselect all other software and close. Go back to the main window.

Do an install updates. Received a "Could not calculate upgrade" message. The process of doing an Ubuntu upgrade is finicky.

Remove Potential Problem Software

Removing potential software in hopes that the upgrade will go well. See Notes and Log line at the bottom of this page.

 $ sudo apt remove ros-dashing-* && sudo apt autoremove
       [sudo] password for eepp: 
       Reading package lists... Done
       Building dependency tree       
       Reading state information... Done
       Note, selecting 'ros-dashing-rosidl-typesupport-fastrtps-cpp' for glob 'ros-dashing-*'
       Note, selecting 'ros-dashing-urdfdom-headers' for glob 'ros-dashing-*'

Another Upgrade Attempt

• This time it calculated and upgrade
• OK upgrade
• Say yest to remove some stuff
• Replace customized fonfigurations

Another Sanity Check

Looks like the upgrade completed successfully

$ lsb_release -a
       No LSB modules are available.
       Distributor ID:	Ubuntu
       Description:	Ubuntu 20.04.2 LTS
       Release:	        20.04
       Codename:	focal

Looks like we are using about 16% of the file system.

$df
       Filesystem     1K-blocks     Used Available Use% Mounted on
       udev             8134052        0   8134052   0% /dev
       tmpfs            1632496     1644   1630852   1% /run
       /dev/sda1      114854020 16868608  92108064  16% /
       ...
       ...

Looks like there is no optional software installed - i.e. ROS 2 Dashing is no longer there.

$ ls /opt
       ls: cannot access '/opt': No such file or directory

Notes and Logs

• Ubuntu 20.04 Hood NUC Upgrade 20210311 Notes and Log