This appears to be a chfn bug:
$ sudo chfn -f 'Tést Üser' test chfn: invalid name: "Tést Üser"
It looks to me as if nobody's taught chfn about UTF-8.
The problem with keyboard entry of UTF-8 characters in the installer is bug #13938.
This appears to be a chfn bug:
$ sudo chfn -f 'Tést Üser' test
chfn: invalid name: "Tést Üser"
It looks to me as if nobody's taught chfn about UTF-8.
The problem with keyboard entry of UTF-8 characters in the installer is bug #13938.