Nmcli and Nmtui freezing, Firefox not starting, shut-down hangs

[Silkworm]

Running Kubuntu 18.04.5 LTS.

Kernel is 5.4.0-56-generic


I have been unable to start Firefox, or connect to the Internet. Terminal hangs when trying to use nmtui or nmcli.


Also tried using sudo /etc/init.d/network-manager start but to no avail.


Have tried restarting, but computer does not shut down properly (it hangs part-way) and have had to use the manual button.


On the Firefox front, I have deleted the .parentlock file found in the profile, but this has not helped.


I would be very grateful for any light anyone could shed on this---thank you!

[jglen490]

We could try with the output from:

inxi -Fxxxz

Post the results inside a CODE box - the # button in the KFN Reply dialog. This will give us an idea of your general computer configuration.