On 2015-05-27 12:43, Yamaban wrote:
A shot in the dark, but as which user is lightdm running? Running as "root", no suid bit is needed, the rights are sufficent, running as e.g. user "lightdm" and the rights remaining may not be sufficent to start the xserver for the user that wants to login.
On my 13.1, as root. USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND ... root 4499 0.0 0.0 267496 1544 ? SLl May15 0:00 /usr/sbin/lightdm root 4503 0.2 2.2 389776 186564 tty7 Ss+ May15 43:48 _ /usr/bin/X :0 -auth /run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch root 4565 0.0 0.0 164364 1392 ? Sl May15 0:00 _ lightdm --session-child 12 19 cer 4582 0.0 0.0 10780 356 ? Ss May15 0:00 _ /usr/bin/ck-launch-session /usr/bin/dbus-launch --sh-syntax --close-stderr --exit-with-session /home/cer/.xinitrc -- Cheers / Saludos, Carlos E. R. (from 13.1 x86_64 "Bottle" at Telcontar)