Long delay before modal dialogs show

[Matthew D. Mower]

Ubuntu 19.10 with gnome-desktop

After upgrading from Ubuntu 19.04 to 19.10, window dialogs take a long time to display. Sample dialogs include "Are you sure you want to delete this file?" or "Do you want to save this file before quitting?". I can consistently reproduce the issue in Nautilus and Sublime Text, but the issue does not exist in Gedit.

I've attached three screencasts that demonstrate the problem and a syslog that starts from the computer booting and ends shortly after reproducing the issue in Nautilus file manager.
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
CurrentDesktop: GNOME
DisplayManager: gdm3
DistroRelease: Ubuntu 19.10
InstallationDate: Installed on 2019-08-01 (127 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
NonfreeKernelModules: nvidia_modeset nvidia
Package: gnome-shell 3.34.1+git20191024-1ubuntu1~19.10.1
PackageArchitecture: amd64
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 5.3.0-23.25-generic 5.3.7
RelatedPackageVersions: mutter-common 3.34.1+git20191107-1ubuntu1~19.10.1
Tags: eoan
Uname: Linux 5.3.0-23-generic x86_64
UpgradeStatus: Upgraded to eoan on 2019-11-01 (35 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
CurrentDesktop: GNOME
DisplayManager: gdm3
DistroRelease: Ubuntu 19.10
InstallationDate: Installed on 2019-08-01 (127 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
NonfreeKernelModules: nvidia_modeset nvidia
Package: gnome-shell 3.34.1+git20191024-1ubuntu1~19.10.1
PackageArchitecture: amd64
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 5.3.0-24.26-generic 5.3.10
RelatedPackageVersions: mutter-common 3.34.1+git20191107-1ubuntu1~19.10.1
Tags: eoan
Uname: Linux 5.3.0-24-generic x86_64
UpgradeStatus: Upgraded to eoan on 2019-11-01 (35 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True

[Daniel van Vugt (vanvugt)]

Please open a Terminal window and run:

  journalctl -f

Now with that window still visible, reproduce the bug again. What if any new messages appear in the Terminal window during the pause?

[Daniel van Vugt (vanvugt)]

Please also run:

  apport-collect 1852634

to automatically attach system information.

[Matthew D. Mower (mdmower)]

apport information

[Matthew D. Mower (mdmower)]

apport information

[Matthew D. Mower (mdmower)]

apport information

[Matthew D. Mower (mdmower)]

apport information

[Matthew D. Mower (mdmower)]

Thank you for the response Daniel. Attached is `journalctl -f` collected while I reproduced the issue. It's worth noting that no log lines were recorded at the times that the issue occurred.

[Daniel van Vugt (vanvugt)]

In case it is relevant please uninstall this extension and reboot:

  '<email address hidden>'

We need to check this because so many extensions are buggy and break the shell in unexpected ways.

[Matthew D. Mower (mdmower)]

apport information

[Matthew D. Mower (mdmower)]

apport information

[Matthew D. Mower (mdmower)]

apport information

[Matthew D. Mower (mdmower)]

apport information

[Matthew D. Mower (mdmower)]

Thanks Daniel. <email address hidden> was actually uninstalled, but apparently you have to disable an extension before uninstalling it before it is removed from org.gnome.shell.enabled-extensions. In any case, it is fully removed and deactivated now.

I just noticed that you requested a reboot instead of log-out & log-in. Please let me know if you need logs collected again. You can see the GNOME shell restarted in ShellJournal.txt:
[ 1066.154592] 3700X gnome-shell[13280]: GNOME Shell started at Fri Dec 06 2019 09:45:12 GMT-0800 (PST) . I made sure to reproduce the issue several times before collecting logs.

[Matthew D. Mower (mdmower)]

Today, nvidia-driver-430 (the long-lived branch available from https://launchpad.net/~graphics-drivers/+archive/ubuntu/ppa) failed to update properly: "Application of patch do-not-call-pci_save_state.patch failed". So, I removed nvidia-driver-430 and re-tested this issue using nouveau. I could not reproduce the delay. I installed nvidia-driver-440 from the same PPA; I cannot reproduce the delay. I'm unsure if this issue would also be fixed with nvidia-driver-430 version 430.64-0ubuntu0~gpu19.10.1, but at least this issue no longer affects me.

[Launchpad Janitor (janitor)]

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