A dialog box stays on desktop and does not go away

[Joe]

Upon rebooting, I get dialog box

Authentication Required

Authentication is required to start 'cups.service'.

I can type in the password and click Authenticate, but then nothing happens. I can't see under the box. I can't move the box, can't cancel the dialog.

But, I can click on where I know the underneath icon to be and that click is accepted and the program in question runs. It appears the display manager does not remove the image after it is done with the dialog.

I have recently done a clean install of 20.04.

There is a screenshot in this Stack Exchange post:
https://askubuntu.com/questions/1242999/dialog-box-does-not-accept-input-stays-on-top-and-hides-everything-under-it-ub

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-33.37-generic 5.4.34
Uname: Linux 5.4.0-33-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sun Jun 7 23:10:43 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
DkmsStatus:
 amdgpu, 3.3-19, 5.4.0-31-generic, x86_64: installed
 amdgpu, 3.3-19, 5.4.0-33-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] [1002:67df] (rev e7) (prog-if 00 [VGA controller])
   Subsystem: Micro-Star International Co., Ltd. [MSI] Radeon RX 580 [1462:8a92]
InstallationDate: Installed on 2020-05-12 (26 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: System manufacturer System Product Name
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-33-generic root=UUID=ebb08f84-7501-4461-a5c4-c69c3c25d9b0 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/30/2017
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0804
dmi.board.asset.tag: Default string
dmi.board.name: ROG ZENITH EXTREME
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0804:bd11/30/2017:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnROGZENITHEXTREME:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.14.1+20.04.20200211-0ubuntu1
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

[Daniel van Vugt (vanvugt)]

This sounds like bug 1824874. To help us check that please:

1. Provide a screenshot or photo of the problem; and

2. After the dialog has appeared run:

   journalctl -b0 > journal.txt

   or if you had to reboot then run:

   journalctl -b-1 > prevboot.txt

   and attach the resulting text file here.

[Joe (joe9999)]

Thank you,

attached is a screenshot and also journal.txt.

Regards,

Joe

On 6/8/20 12:11 AM, Daniel van Vugt wrote:
> This sounds like bug 1824874. To help us check that please:
>
> 1. Provide a screenshot or photo of the problem; and
>
> 2. After the dialog has appeared run:
>
> journalctl -b0 > journal.txt
>
> or if you had to reboot then run:
>
> journalctl -b-1 > prevboot.txt
>
> and attach the resulting text file here.
>
>
> ** Package changed: xorg (Ubuntu) => gnome-shell (Ubuntu)
>
> ** Changed in: gnome-shell (Ubuntu)
> Status: New => Incomplete
>

[Daniel van Vugt (vanvugt)]

Thanks. That confirms this is a duplicate of bug 1824874.