Manjaro ARM 20.04

[thepeckhambassplayer]

I knew that I should wait on the update, now I only have sddm and, luckily, a vt
But I still have no X, enter my password, and nothing happens
Partly my fault, the update is so slow, went to sleep and would not wake
So, after an hour hard power off. Since the db would not open, eventually deleted lock file
The error msg could be better. Tried to finish update, no wifi (all in vt)
The usual nmcli wouldn't work, had to do "nmcli con up <ap name> -a"
A systemd thing I think.  So, after update finished, still same,,
sddm won't do anything after password, there is vt access (all buttons in sddm functional)
journald is not all that helpfull
Suggestions?
Solved,, startplasma-* and xsessions/plasma.desktop zero size
reinstall of plasma-workspace was needed
Not sure how this package slipped thru the checksum

Dear wdt - how do I reinstall the plasma workspace? I trashed kde (long story but it fell to pieces after I uninstalled the corrupt update for breeze) - most of it is still there (eg graphical login screen) but bits are missing. The usb install gives me a blank screen so I can't try a fresh installation.

Many thanks - Alex