http://bugzilla.opensuse.org/show_bug.cgi?id=1013200
http://bugzilla.opensuse.org/show_bug.cgi?id=1013200#c23
--- Comment #23 from Patrick Schaaf
When the Xserver is running but just showing a black screen one could try to obtain the credentials from the Xserver command line and then try to log in: From a root shell (remote or after a VT switch) do: 1. # ps aux | grep Xorg get the argument after '-auth' 2. # export XAUTHORITY=
3. # export DISPLAY=:0.0 4. # xterm
That doesn't work... See transscript below. I also tried it as user, with /run/addm/{...} chmodded 644, still no joy. rofl:~ # systemctl status display-manager display-manager.service - X Display Manager Loaded: loaded (/usr/lib/systemd/system/display-manager.service; enabled; vendor preset: enabled) Active: ^[[0;1;32mactive (running)^[[0m since Fri 2016-12-02 16:10:35 CET; 2min 1s ago Process: 1300 ExecStart=/usr/lib/X11/display-manager start (code=exited, status=0/SUCCESS) Main PID: 1390 (sddm) Tasks: 4 (limit: 512) CGroup: /system.slice/display-manager.service ├─1390 /usr/bin/sddm └─1402 /usr/bin/X -nolisten tcp -auth /run/sddm/{b8afb90f-46c8-4438-9a97-1bf82d128e7b} -background none -noreset -displayfd 18 vt7 Dec 02 16:10:36 linux sddm[1390]: Socket server started. Dec 02 16:10:36 linux sddm[1390]: Greeter starting... Dec 02 16:10:36 linux sddm[1390]: Adding cookie to "/run/sddm/{b8afb90f-46c8-4438-9a97-1bf82d128e7b}" Dec 02 16:10:36 linux sddm-helper[1671]: [PAM] Starting... Dec 02 16:10:36 linux sddm-helper[1671]: [PAM] Authenticating... Dec 02 16:10:36 linux sddm-helper[1671]: [PAM] returning. Dec 02 16:10:36 linux sddm-helper[1671]: pam_unix(sddm-greeter:session): session opened for user sddm by (uid=0) Dec 02 16:10:53 rofl sddm[1390]: Greeter session started successfully Dec 02 16:10:53 rofl sddm[1390]: ^[[0;1;39mAuth: sddm-helper exited with 6^[[0m Dec 02 16:10:53 rofl sddm[1390]: Greeter stopped. rofl:~ # coredumpctl list TIME PID UID GID SIG PRESENT EXE [... stuff from previous boots ...] Fri 2016-12-02 16:10:54 CET 2045 481 479 6 * /usr/bin/sddm-greeter rofl:~ # export XAUTHORITY=/run/sddm/{b8afb90f-46c8-4438-9a97-1bf82d128e7b\} rofl:~ # export DISPLAY=:0.0 rofl:~ # xterm No protocol specified Warning: This program is an suid-root program or is being run by the root user. The full text of the error or warning message cannot be safely formatted in this environment. You may get a more descriptive message by running the program as a non-root user or by removing the suid bit on the executable. xterm: Xt error: Can't open display: %s -- You are receiving this mail because: You are on the CC list for the bug.