Package: gdm3 Version: 3.20.1-1 Severity: important When logging in with gdm3, after a few minutes, the screen goes completely black and locks up. The only operation that is still possible at this point is pressing the power button to shut down the computer. Using lightdm, I do not have this problem.
/var/log/syslog contain this relevant section: May 25 15:57:52 sonar org.gnome.Shell.desktop[16083]: (gnome-shell:16083): Cogl-ERROR **: Failed to create an OpenGL framebuffer object May 25 15:57:52 sonar kernel: [618234.281992] traps: gnome-shell[16083] trap int3 ip:7f2cbeba6a6b sp:7ffe82d114b0 error:0 May 25 15:57:52 sonar gnome-session[16062]: gnome-session-binary[16062]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 5 May 25 15:57:52 sonar gnome-session-binary[16062]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 5 May 25 15:57:52 sonar org.gnome.Shell.desktop[17314]: X Error of failed request: BadMatch (invalid parameter attributes) May 25 15:57:52 sonar org.gnome.Shell.desktop[17314]: Major opcode of failed request: 140 (RANDR) May 25 15:57:52 sonar org.gnome.Shell.desktop[17314]: Minor opcode of failed request: 7 (RRSetScreenSize) May 25 15:57:52 sonar org.gnome.Shell.desktop[17314]: Serial number of failed request: 192 May 25 15:57:52 sonar org.gnome.Shell.desktop[17314]: Current serial number in output stream: 193 May 25 15:57:52 sonar gnome-session[16062]: gnome-session-binary[16062]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1 May 25 15:57:52 sonar gnome-session[16062]: gnome-session-binary[16062]: WARNING: App 'org.gnome.Shell.desktop' respawning too quickly May 25 15:57:52 sonar gnome-session-binary[16062]: Unrecoverable failure in required component org.gnome.Shell.desktop May 25 15:57:52 sonar gnome-session-binary[16062]: WARNING: App 'org.gnome.Shell.desktop' exited with code 1 May 25 15:57:52 sonar gnome-session-binary[16062]: WARNING: App 'org.gnome.Shell.desktop' respawning too quickly May 25 15:57:53 sonar gnome-session[16062]: Unable to init server: Could not connect: Connection refused May 25 15:57:53 sonar gnome-session[16062]: ** (gnome-session-failed:17319): WARNING **: Cannot open display: This is very similar to a bug report submitted to Arch linux. See https://bugs.archlinux.org/task/48772 -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.5.0-2-amd64 (SMP w/8 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages gdm3 depends on: ii accountsservice 0.6.40-3 ii adduser 3.114 ii dconf-cli 0.26.0-1 ii dconf-gsettings-backend 0.26.0-1 ii debconf [debconf-2.0] 1.5.59 ii gir1.2-gdm-1.0 3.20.1-1 ii gnome-session [x-session-manager] 3.20.1-3 ii gnome-session-bin 3.20.1-3 ii gnome-settings-daemon 3.20.1-1 ii gnome-shell 3.20.2-1 ii gnome-terminal [x-terminal-emulator] 3.20.2-1 ii gsettings-desktop-schemas 3.20.0-3 ii libaccountsservice0 0.6.40-3 ii libaudit1 1:2.5.2-1 ii libc6 2.22-9 ii libcanberra-gtk3-0 0.30-3 ii libcanberra0 0.30-3 ii libgdk-pixbuf2.0-0 2.34.0-1 ii libgdm1 3.20.1-1 ii libglib2.0-0 2.48.1-1 ii libglib2.0-bin 2.48.1-1 ii libgtk-3-0 3.20.5-2 ii libpam-modules 1.1.8-3.2 ii libpam-runtime 1.1.8-3.2 ii libpam-systemd 230-1 ii libpam0g 1.1.8-3.2 ii librsvg2-common 2.40.15-1 ii libselinux1 2.5-3 ii libsystemd0 230-1 ii libwrap0 7.6.q-25 ii libx11-6 2:1.6.3-1 ii libxau6 1:1.0.8-1 ii libxdmcp6 1:1.1.2-1.1 ii lsb-base 9.20160110 ii metacity [x-window-manager] 1:3.18.4-1 ii mutter [x-window-manager] 3.20.2-1 ii openbox [x-window-manager] 3.6.1-2 ii policykit-1 0.105-15 ii tinywm [x-window-manager] 1.3-9 ii twm [x-window-manager] 1:1.0.9-1 ii ucf 3.0036 ii x11-common 1:7.7+15 ii x11-xserver-utils 7.7+7 ii xterm [x-terminal-emulator] 324-2 Versions of packages gdm3 recommends: ii at-spi2-core 2.20.1-1 ii desktop-base 8.0.2 ii x11-xkb-utils 7.7+3 ii xserver-xephyr 2:1.18.3-1 ii xserver-xorg 1:7.7+15 ii zenity 3.20.0-1 Versions of packages gdm3 suggests: ii gnome-orca 3.20.0-1 ii libpam-gnome-keyring 3.20.0-1 -- Configuration Files: /etc/gdm3/daemon.conf changed: [daemon] WaylandEnable=false [security] [xdmcp] [chooser] [debug] Enable=true -- debconf information excluded