I have two computers installed as shown on this extract of /etc/hosts: 192.168.2.1 fritz.box fb # unknown 192.168.2.16 acer ac # Leap_15.1 192.168.2.11 susa se # SuSE_13.2 It is no problem to start a program, e.g. urxvt, from acer on susa. I simply do it by setting $DISPLAY to susa:0.0 on acer: setenv DISPLAY susa:0.0 urxvt & But the inverse setting does not work: setenv DISPLAY acer:0.0 urxvt & This produces the following error message: "urxvt: can't open display acer:0.0, aborting." In other words, a setting of $DISPLAY under SuSE_13.2 works no more under Leap_15.1. Also, disabling access control by setting xhost + does not help. What can I do to force acer to accept setting $DISPLAY to acer:0.0 ? Thanks in advance and best regards, Wolfgang -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org