After installing and restarting my computer from the ubuntu software updater prompt, my computer never completes a boot due to "Failed to start Daemon for power management":
/dev/sda2: recovering journal /dev/sda2: clean, 789912/30498816 files, 66894142/121965056 blocks ^[[20~^[[20~^[[20~^[[20~^[[20~^[[20~^[[20~^[[20~[FAILED] Failed to start Daemon for power management. See 'systemctl status upower.service' for details.
I tried to go into the grub and boot an older linux version there but the same issue occurred.
Being unable to boot my system, I went into Recovery Menu to attempt to solve issue from there. When I attempted to use "dpkg Repair broken packages" I hit another issue that I did not find talked about in the web:
"Reading cache Can not upgrade An upgrade from 'bionic' to 'focal' is not supported with this tool."
As I keep running into issues pop up I am not really sure what about ubuntu's software update really did to my computer. I am really not sure where to go at this point to address the issues.
41 Answer
From the log file /var/log/apt/history.log, check that whether systemd:amd64 and systemd-timesyncd:amd64 is removed, if they are you may be effected by
Try installing them sudo apt install systemd:amd64 systemd-timesyncd:amd64
systemd: User daemons fail to start after after update removed snap
