Bug 27177

Summary:	/etc/sddm.conf has MinimumUID=500 to list users
Product:	Mageia	Reporter:	w unruh <unruh>
Component:	RPM Packages	Assignee:	KDE maintainers <kde>
Status:	RESOLVED INVALID	QA Contact:
Severity:	major
Priority:	Normal	CC:	ouaurelien
Version:	Cauldron
Target Milestone:	Mageia 8
Hardware:	All
OS:	Linux
Whiteboard:	MGA7TOO
Source RPM:	sddm-0.18.1-4.mga8.src.rpm	CVE:
Status comment:

Description w unruh 2020-08-22 05:44:43 CEST

Description of problem:
/etc/sddm.conf has MinimumUID=500 under Mageia specific configuration.
 but Mageia switched to MinimumUID=1000 many versions ago.

Comment 1 Aurelien Oudelet 2020-08-22 07:11:32 CEST

Hi, thanks report this.

I can reproduce it in Mageia 8 Beta 1. Assigning to KDE Team maintainers.

Whiteboard: (none) => MGA7TOO
Severity: normal => major
CC: (none) => ouaurelien
Assignee: bugsquad => kde
Target Milestone: --- => Mageia 8
Version: 7 => Cauldron
Source RPM: sddm-0.18.1-3.mga7 => sddm-0.18.1-4.mga8.src.rpm
Summary: /etc/sddm.conf has MinimumUID=500. => /etc/sddm.conf has MinimumUID=500 to list users

Comment 2 David Walser 2020-08-22 18:23:56 CEST

We support users upgrading from previous Mageia versions who have a UID still in the 500-999 range.  In fact, if a user using such a UID does *not* work, that is a bug and you should file a report.  SDDM has been patched to filter out system users so that it does not display them.  Hopefully that is still working too.

Resolution: (none) => INVALID
Status: NEW => RESOLVED

Comment 3 Aurelien Oudelet 2020-08-22 18:26:39 CEST

@ David, 
I recently see my sddm.conf written with MinimumUID=500 with a fresh install of Mageia 8 Beta 1.

So I think this is a bug, is not it?

Comment 4 w unruh 2020-08-22 18:52:06 CEST

Ie, when sddm is refreshed, sddm.conf is not replaced, but rather a sddm.conf.rpmnew is created. Thus if the user upgrades from Mageia 6, sddm.conf should not be replaced and the old MinimumUID should stay there. If it is a fresh install, then the new sddm.conf with the MinimumUID=1000 would be installed, especially since Mageia fills up the uids<1000 with a whole variety of system uids. Ie, the support for minuid=500 is pretty ratty and difficult already.

It is of course true that Mageia will not use a uid (eg for some ancient user with say uid=250) that is already in use.

Having sddm MinimumUID=1000 would just be another hurdle that the user would have to put up with to keep his old numbering. But then it was something like Mageia 3 or earlier (more than 5 years ago) that Mageia switched to uid>=1000 for users.
I hung on till about 3 years ago with my uid=250 and finally just did
find / -uid 250 -exec chown 1000 \{\} +
(and similarly for a few other of my users)

Status: RESOLVED => REOPENED
Resolution: INVALID => (none)

Comment 5 David Walser 2020-08-23 16:37:43 CEST

It doesn't matter when the switch was made.  Some users may have low UIDs for a long time.  Anyway, unless the login screen is showing system users, there is no bug.

Status: REOPENED => RESOLVED
Resolution: (none) => INVALID