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Joe Molnar
Asked: 2020-05-24 18:34:49 +0800 CST

Dialog box does not accept input, stays on-top and hides everything under it. Ubuntu 20.04

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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.

Thank you in advance ...

I have recently done a clean install of 20.04. enter image description here

printing .desktop desktop-icons cups-lpd ubuntu-gnome

2 Answers

  1. From the comments in the bug linked in the other answer, the following seems to get rid of the window , though I have absolutely no idea what actually is happening under the hood:

    "And when I press ALT+F2, then type "r" and press enter, it's gone!"

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  2. This is a known issue. When I reported the bug, this was the reply:

    * This bug is a duplicate of bug 1824874 * https://bugs.launchpad.net/bugs/1824874

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

    ** This bug has been marked a duplicate of bug 1824874 undismissable, unclickable authentication dialog left on screen (top-left corner) after policykit authentication [pushModal: invocation of begin_modal failed]

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