Comment # 22 on bug 1200983 from Michael Hirmke

Created attachment 866042 [details]
latest journal entries regarding usb

The log contains all "usb" entries from the last boot.
All devices are found during boot. The keyboard works in grub and in the
plymouth dialog for the LUKS passphrase. All /dev/event entries are present.
There are no errors or warnings in the log regarding usb.
At Apr 01 12:13:32 the boot process finished and the sddm login screen was
shown.
At this point according to the journal still all devices were present (also
checked the presence of the devices from remote), but keyboard and mouse didn't
work as expected. Using a linux console the keyboard misbehaved as described in
https://bugzilla.suse.com/show_bug.cgi?id=1200983#c10. Returning to sddm login,
keyboard and mouse didn't work at all.
At Apr 01 12:34:19 I disconnected and reconnected keyboard and mouse and both
started working immediately.
If you need more logging or more debugging, ...