Bug#893074: gnome-control-center: external tv device freezes gnome on wayland

[geodeb]

Package: gnome-control-center
Version: 1:3.27.92-1
Severity: important

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
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I have a dell xps 13 and a tv 4k connected via adapter usb c/hdmi. It worked
flawlessy for the last 3 years. this morning after update to gnome 3.27.92 in
buster , when I connect the tv to the pc , this one freezes completely with no
other choice to power off. in gnome xorg the tv is recognized but only in full
hd resolution. on higher res, it freezes too.



-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (500, 'testing'), (2, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.14.0-3-rt-amd64 (SMP w/4 CPU cores; PREEMPT)
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8), LANGUAGE=it_IT.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-control-center depends on:
ii  accountsservice            0.6.45-1
ii  apg                        2.2.3.dfsg.1-5
ii  colord                     1.3.3-2
ii  desktop-file-utils         0.23-2
ii  gnome-control-center-data  1:3.27.92-1
ii  gnome-desktop3-data        3.27.92-1
ii  gnome-settings-daemon      3.26.2-1
ii  gsettings-desktop-schemas  3.27.92-1
ii  libaccountsservice0        0.6.45-1
ii  libatk1.0-0                2.26.1-3
ii  libc6                      2.27-2
ii  libcairo-gobject2          1.15.10-1
ii  libcairo2                  1.15.10-1
ii  libcanberra-gtk3-0         0.30-6
ii  libcanberra0               0.30-6
ii  libcheese-gtk25            3.26.0-4+b1
ii  libcheese8                 3.26.0-4+b1
ii  libclutter-1.0-0           1.26.2+dfsg-4
ii  libclutter-gtk-1.0-0       1.8.4-3
ii  libcolord-gtk1             0.1.26-2
ii  libcolord2                 1.3.3-2
ii  libcups2                   2.2.6-5
ii  libfontconfig1             2.12.6-0.1
ii  libgdk-pixbuf2.0-0         2.36.11-1
ii  libglib2.0-0               2.54.3-2
ii  libgnome-bluetooth13       3.26.1-3
ii  libgnome-desktop-3-17      3.27.92-1
ii  libgoa-1.0-0b              3.27.92-1
ii  libgoa-backend-1.0-1       3.27.92-1
ii  libgrilo-0.3-0             0.3.4-1
ii  libgtk-3-0                 3.22.28-1
ii  libgtop-2.0-11             2.38.0-2
ii  libgudev-1.0-0             232-2
ii  libibus-1.0-5              1.5.17-3
ii  libkrb5-3                  1.16-2
ii  libmm-glib0                1.7.990-1
ii  libnm0                     1.10.4-1+b1
ii  libnma0                    1.8.10-2
ii  libpango-1.0-0             1.40.14-1
ii  libpangocairo-1.0-0        1.40.14-1
ii  libpolkit-gobject-1-0      0.105-18
ii  libpulse-mainloop-glib0    11.1-4
ii  libpulse0                  11.1-4
ii  libpwquality1              1.4.0-2
ii  libsmbclient               2:4.7.4+dfsg-2
ii  libsoup2.4-1               2.60.3-1
ii  libupower-glib3            0.99.7-2
ii  libwacom2                  0.26-1
ii  libwayland-server0         1.14.0-2
ii  libx11-6                   2:1.6.4-3
ii  libxi6                     2:1.7.9-1
ii  libxml2                    2.9.4+dfsg1-6.1

Versions of packages gnome-control-center recommends:
ii  cracklib-runtime              2.9.2-5+b1
ii  cups-pk-helper                0.2.6-1+b1
ii  gkbd-capplet                  3.26.0-3
ii  gnome-online-accounts         3.27.92-1
ii  gnome-user-docs               3.26.2.1-1
ii  gnome-user-share              3.18.3-3
ii  iso-codes                     3.79-1
ii  libcanberra-pulse             0.30-6
ii  libnss-myhostname             238-2
ii  mousetweaks                   3.12.0-4
ii  network-manager-gnome         1.8.10-2
ii  policykit-1                   0.105-18
ii  pulseaudio-module-bluetooth   11.1-4
ii  realmd                        0.16.3-1
ii  rygel                         0.36.0-1
ii  rygel-tracker                 0.36.0-1
ii  system-config-printer-common  1.5.11-1

Versions of packages gnome-control-center suggests:
ii  gnome-software           3.27.92-1
ii  gstreamer1.0-pulseaudio  1.12.4-1+b1
pn  libcanberra-gtk-module   <none>
ii  libcanberra-gtk3-module  0.30-6
ii  x11-xserver-utils        7.7+7+b1

-- no debconf information