Bug#898684: 100% when monitor is plugged/unplugged while system is suspended or hibernated

[Enrico Zini]

Package: gnome-shell
Version: 3.28.1-1
Severity: important

Hello,

to reproduce:

1. start from home, with the laptop attached to an external monitor
2. suspend or hibernate
3. detach the external monitor and pack the laptop
4. go visit an important customer
5. wake up the system
6. gnome-shell will now consume 100% CPU, overheat the laptop, severely
   reduce system performance and battery time, ruin a work day at the
   important customer, cause serious embarassment

I have not found a way to make it stop, short of having another external
monitor to plug/unplug, restart the whole X session, or reboot.


Enrico

-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.16.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8), LANGUAGE=en_IE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gnome-shell depends on:
ii  dconf-gsettings-backend [gsettings-backend]  0.28.0-2
ii  evolution-data-server                        3.28.2-1
ii  gir1.2-accountsservice-1.0                   0.6.45-1
ii  gir1.2-atspi-2.0                             2.28.0-3
ii  gir1.2-freedesktop                           1.56.1-1
ii  gir1.2-gcr-3                                 3.28.0-1
ii  gir1.2-gdesktopenums-3.0                     3.28.0-1
ii  gir1.2-gdm-1.0                               3.28.1-1
ii  gir1.2-geoclue-2.0                           2.4.7-1
ii  gir1.2-glib-2.0                              1.56.1-1
ii  gir1.2-gnomebluetooth-1.0                    3.28.0-2
ii  gir1.2-gnomedesktop-3.0                      3.28.1-1
ii  gir1.2-gtk-3.0                               3.22.29-3
ii  gir1.2-gweather-3.0                          3.28.1-1
ii  gir1.2-ibus-1.0                              1.5.18-1
ii  gir1.2-mutter-2                              3.28.1-2
ii  gir1.2-nm-1.0                                1.10.6-3
ii  gir1.2-nma-1.0                               1.8.10-5
ii  gir1.2-pango-1.0                             1.42.0-1
ii  gir1.2-polkit-1.0                            0.105-20
ii  gir1.2-rsvg-2.0                              2.40.20-2
ii  gir1.2-soup-2.4                              2.62.1-1
ii  gir1.2-upowerglib-1.0                        0.99.7-2
ii  gjs                                          1.52.3-1
ii  gnome-backgrounds                            3.28.0-1
ii  gnome-settings-daemon                        3.28.1-1
ii  gnome-shell-common                           3.28.1-1
ii  gsettings-desktop-schemas                    3.28.0-1
ii  libatk-bridge2.0-0                           2.26.2-1
ii  libatk1.0-0                                  2.28.1-1
ii  libc6                                        2.27-3
ii  libcairo2                                    1.15.10-3
ii  libcanberra-gtk3-0                           0.30-6
ii  libcanberra0                                 0.30-6
ii  libcroco3                                    0.6.12-2
ii  libecal-1.2-19                               3.28.2-1
ii  libedataserver-1.2-23                        3.28.2-1
ii  libgcr-base-3-1                              3.28.0-1
ii  libgdk-pixbuf2.0-0                           2.36.11-2
ii  libgirepository-1.0-1                        1.56.1-1
ii  libgjs0g [libgjs0-libmozjs-52-0]             1.52.3-1
ii  libglib2.0-0                                 2.56.1-2
ii  libglib2.0-bin                               2.56.1-2
ii  libgstreamer1.0-0                            1.14.0-1
ii  libgtk-3-0                                   3.22.29-3
ii  libical3                                     3.0.1-5
ii  libjson-glib-1.0-0                           1.4.2-4
ii  libmutter-2-0                                3.28.1-2
ii  libnm0                                       1.10.6-3
ii  libpango-1.0-0                               1.42.0-1
ii  libpangocairo-1.0-0                          1.42.0-1
ii  libpolkit-agent-1-0                          0.105-20
ii  libpolkit-gobject-1-0                        0.105-20
ii  libpulse-mainloop-glib0                      11.1-5
ii  libpulse0                                    11.1-5
ii  libsecret-1-0                                0.18.6-1
ii  libstartup-notification0                     0.12-5
ii  libsystemd0                                  238-4
ii  libx11-6                                     2:1.6.5-1
ii  libxfixes3                                   1:5.0.3-1
ii  mutter                                       3.28.1-2
ii  python3                                      3.6.4-1

Versions of packages gnome-shell recommends:
ii  bolt                                      0.3-2
ii  contain-gnome-shell [chrome-gnome-shell]  1.0
ii  gdm3                                      3.28.1-1
ii  gkbd-capplet                              3.26.0-3
ii  gnome-control-center                      1:3.28.1-1
ii  gnome-user-docs                           3.28.1-1
ii  iio-sensor-proxy                          2.4-2
ii  switcheroo-control                        1.2-1
ii  unzip                                     6.0-21

Versions of packages gnome-shell suggests:
ii  gir1.2-telepathyglib-0.12   0.24.1-2
ii  gir1.2-telepathylogger-0.2  0.8.2-3

-- no debconf information