Cannot change login user for SDDM under Lubuntu 18.04

Bug #1845745 reported by Tong Sun
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
sddm (Ubuntu)
Undecided
Unassigned

Bug Description

I have more than one user set up but the login screen only shows the initial (original) user with SDDM.
Using LightDM allows me to type in (thus change to) the other users, and they are able to login just fine.

I.e., my SDDM login screen always stuck with the original user created when the system was first installed -- the left and right arrow that is supposed to change the login user doesn't work for me.

This is LUbuntu 18.04.02.

Revision history for this message
Chris Guiver (guiverc) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:

apport-collect 1845745

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

Yes your explanation was clear (and I saw it last night on askubuntu too), but your provided no detail as to package versions (esp. sddm), or if you are using a Ubuntu repo package or one obtained from elsewhere (Lubuntu didn't support sddm until 18.10). If you don't want to provide full (apport-collect) details of your system, I'd request you to limit it to package sddm (ie. `-p sddm`)

After providing the extra detail, please change the status of this bug back to "New". Likewise if you believe I've made an error, leave a comment stating why and you can return it to "New". Again, thank you for taking the time to report this bug and helping to make Ubuntu better.

Changed in sddm (Ubuntu):
status: New → Incomplete
Revision history for this message
Chris Guiver (guiverc) wrote :

I just booted a QA-install of Xubuntu 18.04.3 LTS (final release-candidate) and updated it, added `lubuntu-desktop` and `sddm` (sddm made default). I used `adduser` to create another user, and rebooted.

At the sddm greeter, I could use mouse to pick my 'guiverc' user, 'qa-user' or newly created 'garfield' user. (a xubuntu post-install QA-test had me create 'qa-user' which is why it existed; I'd forgotten it was there)

Because my base was Xubuntu 18.04.3 (x86), my system will have different packages, but it was a fresh un-used system so is pretty clean (created only for QA-test purposes pre-18.04.3 release). I could not re-create this issue at all.

(I used x86, as `sddm` pulls in a lot of KDE/Qt packages and didn't want to do it on a x86_64 system I use for other things).

Revision history for this message
Tong Sun (suntong001) wrote :

> Lubuntu didn't support sddm until 18.10

Ah, that might explains it. I'm using the Lubuntu 18.04 without much upgrade. I.e., my system being 18.04 and not fully updated might be the cause.

summary: - Cannot change login user for SDDM
+ Cannot change login user for SDDM under Lubuntu 18.04
Revision history for this message
Tong Sun (suntong001) wrote :

> This bug report will be marked for expiration in 59 days

I'll wait for it to close itself then, if nobody else can confirm it.

Revision history for this message
Chris Guiver (guiverc) wrote :

The incomplete was because we have no details as for your `sddm` package, nor your system (apport or ubuntu-bug type tools submit this information, and running the command

apport-collect 1845745

on the box where you have the issue, as per my first (#1) comment will add this information to the bug report. It's this information that the bug report is after only. Provide it and you can change "Incomplete" to "New"

`sddm` is a community package; and whilst not supported by Lubuntu specifically, my testing in comment #2 found it worked fine with my Lubuntu test using 18.04. Because we don't yet know your architecture (`apport-collect` will provide when you run it) you may be different to the testing I did which was on a x86/i686 box; but it worked for me with 3 users.

I suggest you run

`sudo apt update; sudo apt full-upgrade`

and your box should fully upgrade itself to the latest 18.04.3 system (note: some methods of getting release info report the release installed, not the current state). I would suggest doing that and trying again.

Revision history for this message
Launchpad Janitor (janitor) wrote :

[Expired for sddm (Ubuntu) because there has been no activity for 60 days.]

Changed in sddm (Ubuntu):
status: Incomplete → Expired
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