Running 5.8.0-59

The default keyboard shortcuts have all disappeared. When I use CTRL-C, it prints C and deletes the selected text.

CTRL- click doesn't open hyperlinks.

It affects LibreOffice, Kate etc. and is a bloomin' nuisance!

Context copy/paste works okay with mouse.

I'd be grateful for advice.

As is so often the way, I've wrestled with this for 2 days. Then, as soon as I start a thread, an idea suddenly dawns.

I switched the keyboard (Cherry KC1000) from a USB 3.0 slot to a 2.0 slot. CTRL + C and CTRL + V worked perfectly.

Then I switched back to the original 3.0 slot and they worked there too!

Alice in Wonderland stuff.

Probably disconnecting the keyboard did the trick (i.e. rebooting the keyboard).