Bug#894306: gnome-control-center: gnome display external monitor resolution higher than full hd freezes the system: only in 3.28

[geodeb]

Package: gnome-control-center
Version: 1:3.28.0-1
Severity: grave
Tags: upstream
Justification: renders package unusable

Dear Maintainer,

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

   * What led up to the situation? connection of a 4k external monitor
   * What exactly did you do (or not do) that was effective (or
     ineffective)? until gnome 3.26 it was correctly detected. now it works
only on full hd resolution. higher resolutions cause the blackout of both the
displays and the only way out is to power off.
   * What was the outcome of this action? the system is unusable
   * What outcome did you expect instead?the correct resolution on both
displays

*** End of the template - remove these template lines ***



-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (1000, 'testing'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.15.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.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  1:3.28.0-1
ii  gnome-desktop3-data        3.28.0-1
ii  gnome-settings-daemon      3.28.0-1
ii  gsettings-desktop-schemas  3.28.0-1
ii  libaccountsservice0        0.6.45-1
ii  libatk1.0-0                2.28.1-1
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            3.28.0-1
ii  libcheese8                 3.28.0-1
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         2.36.11-2
ii  libglib2.0-0               2.56.0-4
ii  libgnome-bluetooth13       3.28.0-2
ii  libgnome-desktop-3-17      3.28.0-1
ii  libgoa-1.0-0b              3.28.0-1
ii  libgoa-backend-1.0-1       3.28.0-1
ii  libgrilo-0.3-0             0.3.4-1
ii  libgtk-3-0                 3.22.29-1
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                     1.10.6-2
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               2.62.0-1
ii  libupower-glib3            0.99.7-2
ii  libwacom2                  0.29-1
ii  libwayland-server0         1.14.0-2
ii  libx11-6                   2:1.6.5-1
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              2.9.2-5.1
ii  cups-pk-helper                0.2.6-1+b1
ii  gkbd-capplet                  3.26.0-3
ii  gnome-online-accounts         3.28.0-1
ii  gnome-user-docs               3.28.0-1
ii  gnome-user-share              3.18.3-3
ii  iso-codes                     3.79-1
ii  libcanberra-pulse             0.30-6
ii  libnss-myhostname             238-3
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                         0.36.1-1
ii  rygel-tracker                 0.36.1-1
ii  system-config-printer-common  1.5.11-2

Versions of packages gnome-control-center suggests:
ii  gnome-packagekit         3.28.0-2
ii  gnome-software           3.28.0-1
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+8

-- no debconf information