Hi Mike, I did some more digging. The start up script, /etc/init.d/x2gocleansessions, has what it needs to create the directory /tmp/.X11-unix. However, that script does not seem to be run during system startup on my very minimal CentOS v6.4 servers. Running "chkconfig --list | grep x2go" does not come up with anything. Chkconfig does not see it, so /etc/init.d/x2gocleansessions does not run even though it is in the correct directory. I had to add it manually to chkconfig so it would run on system start up; # chkconfig --add x2gocleansessions Now chkconfig sees it as a script to run on system start up; # chkconfig --list | grep x2go x2gocleansessions 0:off 1:off 2:off 3:on 4:off 5:on 6:off Now the start up script /etc/init.d/x2gocleansessions runs on system start up and creates /tmp/.X11-unix. I looked at other application heavy CentOS v6 servers that we have x2go "working" on. They work because it seems that some other application creates /tmp/.X11-unix during system start up. These "working" machines also did not have x2gocleansessions running upon system start up. I ran "chkconfig --add x2gocleansessions" on them as well. If I have figured out the problem, it looks like the x2goserver installation script on CentOS v6 may need to have "chkconfig --add x2gocleansessions" run in it. Thanks, Frank On 10/29/2013 04:21 AM, Mike Gabriel wrote: > Hi Frank, > > On Fr 25 Okt 2013 15:43:16 CEST, Frank Warnke wrote: > >> On 10/25/2013 07:23 AM, Jan Engelhardt wrote: >>> On Friday 2013-10-25 12:41, Mike Gabriel wrote: >>>> can you take a look at issue #332 in X2Go BTS. Obviously, you >>>> should add >>>> something to the RPM package's init script of X2Go Server that >>>> resembles this >>>> http://code.x2go.org/gitweb?p=x2goserver.git;a=blobdiff;f=debian/x2goserver.init;h=5ae86e4832e3f4c497cc238510aa26375d9bcfd3;hp=b56a4cb5898bdf805b533d153a54fd138e06f9b9;hb=b3d9404c654c051875a1f3abcbd3ff81aa6780b7;hpb=d7f10874cafc3113afe50d0e109f084533aace3f >>>> >>> The init script is already whatever was in debian/x2goserver.init. >>> >>> > >> I have this in /etc/rc.d/rc.local on CentOS v6.4 64bit, so that after >> a reboot, x2goclient can still connect to the server; >> >> /bin/mkdir -m 1777 /tmp/.X11-unix >> > > As Jan stated, there should be an init script for X2Go Server. The > script launches /usr/sbin/x2gocleansessions. It also should handled > the /tmp/.X11-unix directory. Can you please check if that script is > in place? Can you also check, why it does not work on your system? > Thanks. > > Mike