We just rebuilt 3 Fedora systems (kernel 2.4.22-1), and all are having the following problem (problems that we didn't have before they were just rebuilt). None of them can throw x windows to other displays of these 3 systems (I'll call them Sys0, Sys1, and Sys2). They all can throw windows to other linux (Fedora) systems on our network (DualDell for example). In fact, Sys0 has the following interesting behavior. It has 2 monitors attached, :0.0 and :0.1 by default. xclock can be thrown to each of these from the other. However, if I say #export DISPLAY=localhost:0.0 on either, I cannot throw up xclock as it gives "refused by server" error. I can ping localhost successfully (it is in /etc/hosts). The same problems occur for setting the display to Sys0:0.0.
I have looked for differences between dualdell and Sys0 in /etc/X11/gdm , /etc/X11/xdm, /etc/pam.d and have not found any differences. I've done this lots of times (and have had to do the ol' xhost + trick), but have never been stumped. It looks like some kind of X11 permissions / security issue, but I'm at a loss for where to look now.
Thanks for any help.
Dean
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