Public bug reported:

Some dialog popups take a while to open, as if the system froze for a
bit (even though journalctl -f doesn't show anything related) which is
extremely annoying. Example:

- the dialog shown if a file should be saved when trying to close a tab in Gedit
- the popup confirmation dialog when using Shift + Delete in Nautilus
- the dialog shown when trying to close a terminal that has a running process

This does not happen every time, but I'm not sure what triggers it.

I made a video showcasing the issue: https://streamable.com/xqjlf The
first time I try to close a Gedit unsaved tab this issue happens, but
the second time it does not happen.

What I tried and did not solve this issue:
- using modal or detached dialogs
- disabling all Gnome Shell extensions (including those that ship with Ubuntu 
by default, by removing the packages)

This seems related to using multiple monitors. I have two monitors, one
using 2560x1080 resolution, and the other 19220x1080 (both with the
default 100% scalx). When I mirrored the displays, this issue no longer
happened. It only happens with extended (using the "Join Displays"
option) display.

To replicate, just click (focus) on other windows multiple times (on
both monitors), then go to the window that causes these issues and it
should happen, like I explained.

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: gnome-shell 3.32.2-2ubuntu1~ubuntu19.04.1
ProcVersionSignature: Ubuntu 5.0.0-23.24-generic 5.0.15
Uname: Linux 5.0.0-23-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.10-0ubuntu27.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug  6 14:10:26 2019
DisplayManager: gdm3
RelatedPackageVersions: mutter-common 3.32.2+git20190711-2ubuntu1~19.04.1
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to disco on 2018-10-17 (292 days ago)

** Affects: gnome-shell (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug disco third-party-packages

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1839136

Title:
  Temporary freeze / delay with some dialog windows

Status in gnome-shell package in Ubuntu:
  New

Bug description:
  Some dialog popups take a while to open, as if the system froze for a
  bit (even though journalctl -f doesn't show anything related) which is
  extremely annoying. Example:

  - the dialog shown if a file should be saved when trying to close a tab in 
Gedit
  - the popup confirmation dialog when using Shift + Delete in Nautilus
  - the dialog shown when trying to close a terminal that has a running process

  This does not happen every time, but I'm not sure what triggers it.

  I made a video showcasing the issue: https://streamable.com/xqjlf The
  first time I try to close a Gedit unsaved tab this issue happens, but
  the second time it does not happen.

  What I tried and did not solve this issue:
  - using modal or detached dialogs
  - disabling all Gnome Shell extensions (including those that ship with Ubuntu 
by default, by removing the packages)

  This seems related to using multiple monitors. I have two monitors,
  one using 2560x1080 resolution, and the other 19220x1080 (both with
  the default 100% scalx). When I mirrored the displays, this issue no
  longer happened. It only happens with extended (using the "Join
  Displays" option) display.

  To replicate, just click (focus) on other windows multiple times (on
  both monitors), then go to the window that causes these issues and it
  should happen, like I explained.

  ProblemType: Bug
  DistroRelease: Ubuntu 19.04
  Package: gnome-shell 3.32.2-2ubuntu1~ubuntu19.04.1
  ProcVersionSignature: Ubuntu 5.0.0-23.24-generic 5.0.15
  Uname: Linux 5.0.0-23-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.10-0ubuntu27.1
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Aug  6 14:10:26 2019
  DisplayManager: gdm3
  RelatedPackageVersions: mutter-common 3.32.2+git20190711-2ubuntu1~19.04.1
  SourcePackage: gnome-shell
  UpgradeStatus: Upgraded to disco on 2018-10-17 (292 days ago)

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https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1839136/+subscriptions

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