Ubuntu login screen does not show full name if it's slightly too long (but not really that long)

[Néstor Rodríguez-Triana Domínguez]

I use Ubuntu 18.04 LTS with gdm3 3.28.3

My native language is Spanish and my fullname use accents and hyphens (Néstor Rodríguez-Triana Domínguez) but it not appear in the gdm3 login screen, only my username (nrtriana). My locale is configured properly as:

LANG=es_ES.UTF-8
LANGUAGE=es_ES
LC_CTYPE="es_ES.UTF-8"
LC_NUMERIC="es_ES.UTF-8"
LC_TIME="es_ES.UTF-8"
LC_COLLATE="es_ES.UTF-8"
LC_MONETARY="es_ES.UTF-8"
LC_MESSAGES="es_ES.UTF-8"
LC_PAPER="es_ES.UTF-8"
LC_NAME="es_ES.UTF-8"
LC_ADDRESS="es_ES.UTF-8"
LC_TELEPHONE="es_ES.UTF-8"
LC_MEASUREMENT="es_ES.UTF-8"
LC_IDENTIFICATION="es_ES.UTF-8"
LC_ALL=es_ES.UTF-8

[Daniel van Vugt (vanvugt)]

I know the login screen has logic to switch between showing the full name or the user name. But I don't know what the condition for switching is...

[Daniel van Vugt (vanvugt)]

It appears the condition is length of the name!?

[Néstor Rodríguez-Triana Domínguez (nrtriana)]

> It appears the condition is length of the name!?

  Right is the length of the name! I change to Lic. Néstor Rodriguez-Triana
and now I can see it in the login screen.

  Thank you for your answer.

Greetings,

--
Lic. Néstor Rodríguez-Triana Domínguez
Health Information Manager, Heroes del Baire's Hospital
Isle of Youth, Cuba
e.mail: <email address hidden>
Phones: ([phone] ext 1183 [Work]
             ([phone] [Home]
             ([phone] [Cell Phone]

[dominik (dominik-redhat-bugs-1)]

gdm displays only user logins instead of their Names for any users who have a hyphen in their Name.

Reproducible: Always

Steps to Reproduce:
1. Launch GNOME Control Center Users tab (gnome-control-center users)
2. Put something with a hyphen (-) in your Name (e.g. John Foo-Bar)
3. Log out and see the list of users at the login screen

Actual Results:
Any name with a hyphen (e.g. John Foo-Bar) is not displayed. Instead only login name is displayed

Expected Results:
All names, including those with hyphens and other special characters should be displayed.

gdm-44.1-1.fc38.x86_64

[dominik (dominik-redhat-bugs-1)]

To avoid confusion:
user login = username (i.e. what you type to log in)
user Name = user display name (descriptive text about user, usually their name, a.k.a. GECOS field)

[dominik (dominik-redhat-bugs-1)]

So the actual issue is not with the hyphen or special characters
but the length of the display name.

Thanks to @fmuellner for informing me of that "feature".

[dominik (dominik-redhat-bugs-1)]

The user display name that I saw this bug with has 29 characters, so please try reproducing with something like:
Abbey Westington-Cloverfield

[dominik (dominik-redhat-bugs-1)]

This was moved to gnome-shell upstream so moving in Fedora as well.