For some reason, my keyboard has changed, so that it seems to be in US configuration (need SHIFT+ 2 FOR @, rather than").
I have googled and tried
xkblayout=uk
but that doesn't seem to do the trick.
How can I change my keyboard back to normal?
lsb_release -a
gives
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 9.11 (stretch)
Release: 9.11
Codename: stretch