lubuntu 19.04 install dual screen; login user/password boxes on both displays allowing password entry

[Chris Guiver]

Lubuntu 19.04 (x86_64) QA-Test install

dell [optiplex] 780 (c2q-q9400, 8gb, amd/ati cedar radeon hd 5000/6000/7350/8350)

On first boot, i expected to see (on either display) a single login box for username/password. Instead I got a box on each display (as if mirrored) but noted the password was only appearing as dots on one screen.

With experimentation, I can enter different passwords on each display - if I press <enter> whilst inside the valid-password box I get logged in, if I press <enter> on an invalid password screen (with valid password on the other screen) I get login failed correctly. As such I don't see how this could be miss-used, but it is a little confusing/distracting (at first), but minor.

After login, if I logout I get the same two user/boxes allowing different entry in each. No change after reboot.

My displays are differently aligned to the default; but this occurred on reboot before any adjustments were made to displays (to match my having one tilted-left so portrait mode etc)

-- Addition 2019-04-06: Is this a bad thing? or a feature
It creates no real issue; and I couldn't see how to miss-use it. My primary box (d960 with multiple DEs) didn't use `sddm` so I I switched to using `sddm` and I love it. As I often turn one display off, it's a huge plus.
-- Further Addition 2019-04-10
I just installed openSUSE Tumbleweed over a Leap install that went bad weeks back, and noted it did exactly the same thing. A `zypper info sddm` shows version 0.18.0-7.1 (this is not unique to Lubuntu's sddm)

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: sddm 0.18.0-1ubuntu2
ProcVersionSignature: Ubuntu 5.0.0-7.8-generic 5.0.0
Uname: Linux 5.0.0-7-generic x86_64
ApportVersion: 2.20.10-0ubuntu23
Architecture: amd64
CurrentDesktop: LXQt
Date: Fri Mar 29 14:26:22 2019
InstallationDate: Installed on 2019-03-29 (0 days ago)
InstallationMedia: Lubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190326.1)
SourcePackage: sddm
UpgradeStatus: No upgrade log present (probably fresh install)

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The following (snippet) is from my QA-test comments
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(between steps 2 & 3 I had to use lxqt.prefs-monitor.settings to adjust my display to match portrait & my display organization for the little sanity i have left..)
// maybe the display change caused this??? I forgot I did that... I'll add comment on https://bugs.launchpad.net/ubuntu/+source/sddm/+bug/1822230
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Could it be that the LXQt.Prefs -> Monitor.Settings change I made before install impacted this??
Even if this change has caused issue, it shouldn't...

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first line of /etc/apt/source.list
deb cdrom:[Lubuntu 19.04 _Disco Dingo_ - Alpha amd64 (20190326.1)]/ disco main multiverse restricted universe

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1822230

[Chris Guiver (guiverc)]

I added all updates, did a reboot & same cosmetic issue remained.

I've also just done a no-internet install now (lubuntu 19.04 checklist); with me resisting the urge to correct screen orientation this time.

Identical issue on no-network install; without any changes to screen setup from default.

[Chris Guiver (guiverc)]

You can view this by booting the daily ISO (noticed on 20190330) by booting it, logging out, and viewing the login screen there.

[Chris Guiver (guiverc)]

I'm changing to INVALID, it's a feature (design decision & is really useful if one display is turned off)