> On Mon, 16 May 2016, Gilbert Sebenste wrote: > >> Hello everyone, >> >> I just installed the CentOS 6.8 updates from the CR repository, >> and then I rebooted the server. I run some software to make weather >> images on a website, and I have run into a problem. When I do it, the >> software, as it tries to plot the image, says: >> >> Xwindow: unable to connect to display >> >> It just stopped working when I did the updates. Has anyone else seen this, >> or have an idea on what to look for to get this fixed? To plot it, I >> use syntax's of >> >> machine: 0 >> machine: 1 >> machine: 2 >> >> Which lets me plot it using virtual frame buffers (Xvfb). When I do xhost >> + servername , it says it has been added to the control list...but it >> still doesn't fix the issue. Does anyone know what I may be doing wrong? > > Also, doing an "xhost +" does not help, either, and in /etc/gdm/custom.conf, > I have: > > DisallowTCP=false > > Any ideas would be greatly appreciated. Thank you! I tried reverting to the previous version of x11-Xvfb-server in CentOS 6.7, and that did not help at all. I am wondering if something is up with GDM or the X11 server, but port 6000 isn't even showing up now as active. Anyone? Gilbert ******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** *******************************************************************************