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! Gilbert ******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** *******************************************************************************