Next odd issue:
After a fresh install and subsequent update to unstable. On the second reboot my RPi4 experienced a wifi issue which the effect would hang the desktop and very high cpu utilization but nothing of note when running top.
I think the issue is /usr/lib/systemd/system/NetworkManager.service.d/NetworkManager-ovs.conf which has the following:
[Unit]
After=openvswitch.service
I do not have openvswitch installed, so no systemd service. So I changed it to:
[Unit]
#After=openvswitch.service
Then rebooted and wifi reappeared and worked properly.
I got the hint from checking the status of NetworkManager and noticed failed ovs.
Edit: My daily driver which is also on arm-unstable, also without openvswitch, does not have the problem with the setting above.
So I am not sure, maybe a timing issue? The two with the issue are on SD while this one is on SSD.