I have found my problem with gdm.
I have a dual processor system board in my test server setup. It uses the dreaded Intel 440GX chipset, like many server boards of a certain era do.
I have to compile a vanilla kernel.org kernel for this machine to duck interrupt problems. The backported POSIX threading code in the Red Hat kernel will explode in anger on the 440GX. This is in the release notes of Red Hat Linux 9.
Red Hat's gdm needs the threading code for remote XDMCP to work. It isn't present, and cannot be.
I guess I'll be compiling a new gdm (oh, the dependencies!) or giving a hard look at kdm. I'll look at Jim's docs. Thanks for the URL. I hope Red Hat kdm is not poisoned by a dependency on the POSIX thread code, but I just might be finding out the hard way.
Note that the "system is stable", like ALL systems, only under a set of conditions. My trouble here is not a hallucination. Let all interested parties note the extreme crappiness of the 440GX chipset. You CAN go wrong with Intel!
P.S. I'm subscribed to the list by two addresses, so a duplicate of my first message in this thread might show up after the list moderator approves it. Just so people won't think I'm nuts if that happens.
Cheers.
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