No superuser access window after upgrade to 20.04

[Igor Zubarev]

After I upgraded to Ubuntu 20.04 I couldn't change settings which required superuser access. For example program sources, users etc. If I try to change I get no modal window with superuser password.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-screensaver (not installed)
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia wl
ApportVersion: 2.20.11-0ubuntu21
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Mar 21 09:37:05 2020
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-screensaver
Symptom: security
Title: Screen locking issue
UpgradeStatus: Upgraded to focal on 2020-03-12 (8 days ago)

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately, we cannot work on this bug because your description didn't include enough information. You may find it helpful to read "How to report bugs effectively" http://www.chiark.greenend.org.uk/~sgtatham/bugs.html. We'd be grateful if you would then provide a more complete description of the problem.

We have instructions on debugging some types of problems at http://wiki.ubuntu.com/DebuggingProcedures.

At a minimum, we need:
1. The specific steps or actions you took that caused you to encounter the problem.
2. The behavior you expected.
3. The behavior you actually encountered (in as much detail as possible).
Thanks!

[Sebastien Bacher (seb128)]

Could you also add a 'journalctl -b 0' log to the bug after triggering the issue?

[Igor Zubarev (igor.zubarev)]

Firstly, when I go to Control Center-> Users and click Unlock I see background dark window and after that temporary see Gnome Ubuntu initial login screen and it disappears.

I expected to see authorization dialog but nothing happened.
Also I found new gnome-shell crash report in var/crash/
See attached file

[Igor Zubarev (igor.zubarev)]

Also see attached output after I type 'journalctl -b 0'

[Gunnar Hjalmarsson (gunnarhj)]

Can you please start Settings from a terminal window like this:

gnome-control-center user-accounts

click the "Unlock" button and let us know which errors/warnings show up in the terminal?

[Igor Zubarev (igor.zubarev)]

Yes. Here is output:

$ gnome-control-center user-accounts

(gnome-control-center:5010): Gtk-WARNING **: 09:47:51.316: Error acquiring permission: Failed to acquire permission for action-id org.gnome.controlcenter.user-accounts.administration

[Gunnar Hjalmarsson (gunnarhj)]

Thanks. I would have hoped for something more verbose... Let's hope that Sebastien can make use of the other info you provided.

[Sebastien Bacher (seb128)]

could you test if that's still an issue using the current version?

[Igor Zubarev (igor.zubarev)]

Very strange. It doesn't work in Software and Updates when I push checkboxes in Other software.
But works in Control Center-> Users when click Unlock.

Also I remember that before last update it worked also in Software and Updates

[Gunnar Hjalmarsson (gunnarhj)]

On 2020-03-31 20:32, Igor Zubarev wrote:
> It doesn't work in Software and Updates when I push checkboxes in
> Other software.

That sounds like bug #1727908. Would it be ok with you to make this bug a duplicate of that other one, or do you see similar failures to prompt for a password elsewhere?

[Igor Zubarev (igor.zubarev)]

It seems it's a problem of Software and Updates, because I tried to install apps in Gnome Software, run synaptic etc and it was ok with password window.

So i think you can mark it as a duplicate of bug #1727908.

[Igor Zubarev (igor.zubarev)]

I marked as a duplicate of bug #1727908.

[Gunnar Hjalmarsson (gunnarhj)]

Thanks Igor!