Bug 367280

Summary:	sddm can't show uid > 65000
Product:	[Applications] systemsettings	Reporter:	Eric BURGHARD <eburghar>
Component:	kcm_sddm	Assignee:	David Edmundson <kde>
Status:	RESOLVED FIXED
Severity:	normal	CC:	filipfila.kde
Priority:	NOR
Version First Reported In:	5.7.3
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Eric BURGHARD 2016-08-17 15:34:44 UTC

We use samba active directory mode and sssd  to authenticate users and since one recent update (we are using kde neon stable 5.7.3), users are not appearing anymore in sddm, because uid are in the range of 1 000 000 000

On my regular linux box __UID_T_TYPE  is 32 bits unsigned, so there's no reason to limit to a weird 65000

Reproducible: Always

Steps to Reproduce:
1. create a user id > 65000
2. try to login with sddm
3.

Actual Results:  
user not showing in users list

Expected Results:  
user appearing in sddm users list

Comment 1 David Edmundson 2016-09-27 10:04:28 UTC

There is some reasoning behind it.

SDDM reads /etc/login.defs (at compile time, which is a bit wrong) and sets UID_MAX to 6500 if it's not available.

I don't want to just change the limit in the KCM to uint_max, as SDDM will still enforce it's limit - acheiving nothing.

I need to:
  - convert SDDM into a runtime check
  - copy and paste that code here

Comment 2 David Edmundson 2016-09-27 10:06:31 UTC

Note you can set this manually in /etc/sddm.conf
MaximumUid=100000

Comment 3 Filip Fila 2019-07-25 22:15:59 UTC

David, since there is a Maximum UID GUI option which seems like an OK solution to the problem, can we close this bug report?