Sisters Upgrade to Ubuntu 18.04 202004

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References

Upgrade From Ubuntu 16.04

Instructions from 18.04 Release Notes referenced above

To upgrade on a desktop system:

Ubuntu Version Notify - Long Term Only

  • Open the "Software & Updates" Setting in System Settings. "System Settings" is the gear icon. "Software & Updates" are in the "System" section.
  • Select the 3rd Tab called "Updates".
  • Set the "Notify me of a new Ubuntu version" drop down menu to "For long-term support versions" if you are using 16.04 LTS; set it to "For any new version" if you are using 17.10. This was already set this way

Update Manager - part 1 upgrade 16.04

  • Press Alt+F2 and type update-manager -c into the command box. Just open a terminal window. 
 $ update-manager -c

These are the issues that had to be fixed before this would work

This is an issue with "Other Software" (third) party items in the repository list. I solved this problem by disabling all third party repositories, in particular: ROS Kinetic, Realsense and PPA. These package must have been incompatible. Now it let me upgrade the current 16.04 system.

Follow this desktop link: Settings (gear icon) -> "Other Software" Tab. Uncheck all of them, authenticate, update and do anything else it requests.

Upgrade Manager - part 2 upgrade to 18.04

 $ update-manager -c
  • This time the Update Manager should open up and tell me that "the software on this computer is up to date and Ubuntu 18.04 LTS is now available. I selected the button that says upgrade to 18.04. I got info measures about some third party software being disabled.
  • Error: "Could Not Calculate the Upgrade"
  • Could Not Calculate the Upgrade 
 sudo apt-get remove ros-*

Follow 18.04 Install Instructions

  • Click Upgrade and follow the on-screen instructions 
 $ update-manager -c
       ...
       57 pacages not support
       88 removed
       1902 upgraded
       ...

Disk Usage

 $ df
     Filesystem     1K-blocks     Used Available Use% Mounted on
     udev             3994984        0   3994984   0% /dev
     tmpfs             803476     2144    801332   1% /run
     /dev/sda5       92535808 34010196  53801952  39% /
     tmpfs            4017380    11700   4005680   1% /dev/shm
     tmpfs               5120        4      5116   1% /run/lock
     tmpfs            4017380        0   4017380   0% /sys/fs/cgroup
     /dev/loop0         96128    96128         0 100% /snap/core/8935
     /dev/loop2         15104    15104         0 100% /snap/gnome-characters/495
     /dev/loop1          3840     3840         0 100% /snap/gnome-system-monitor/135
     /dev/loop4         56320    56320         0 100% /snap/core18/1705
     /dev/loop3          1024     1024         0 100% /snap/gnome-logs/93
     /dev/loop5        164096   164096         0 100% /snap/gnome-3-28-1804/116
     /dev/loop6        144128   144128         0 100% /snap/gnome-3-26-1604/98
     /dev/loop7         56192    56192         0 100% /snap/gtk-common-themes/1502
     /dev/loop8          4480     4480         0 100% /snap/gnome-calculator/704
     /dev/sda1         507904    69760    438144  14% /boot/efi
     tmpfs             803476       16    803460   1% /run/user/125
     tmpfs             803476       28    803448   1% /run/user/1000
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