Gamepad/Controllers do not work out of the box

[trigg]

A minor issue, thankfully with a fairly simple fix

Steam was reporting 'No controllers found' despite my entire collection being plugged in.

Following : https://docs.fedoraproject.org/en-US/fedora-silverblue/troubleshooting/#_unable_to_add_user_to_group

lead me to the steps

grep -E '^input:' /usr/lib/group | sudo tee -a /etc/group
sudo usermod -aG input $USER

after a log out-and-in all controllers appear to work as expected.