Comment # 13 on bug 997486 from Leon Meier

Created attachment 692494 [details]
A new output of journalctl

I reinstalled the xorg-x11-fonts-core package as recommended. Errors (EE) still
occur. The first one:
Sep 15 18:05:28 my_host_name /usr/lib/gdm/gdm-x-session[1466]: (EE) Error
systemd-logind returned paused fd for drm node

The next one is also in /var/lib/gdm/.local/share/xorg/Xorg.0.log:
...
[   706.535] (II) intel(0): switch to mode 1920x1200@60.0 on HDMI1 using pipe
0, position (0, 0), rotation normal, reflection none
[   706.535] (II) intel(0): switch to mode 1920x1200@60.0 on HDMI2 using pipe
1, position (0, 0), rotation normal, reflection none
[   706.535] (II) intel(0): Setting screen physical size to 508 x 317
[   706.601] (EE) 
Fatal server error:
[   706.601] (EE) could not open default font 'fixed'(EE) 
[   706.601] (EE) 
Please consult the The X.Org Foundation support 
         at http://wiki.x.org
 for help. 
[   706.601] (EE) Please also check the log file at
"/var/lib/gdm/.local/share/xorg/Xorg.0.log" for additional information.
[   706.601] (EE) 
[   706.601] (II) AIGLX: Suspending AIGLX clients for VT switch
[   706.707] (EE) Server terminated with error (1). Closing log file.