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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.0) Gecko/20020529

Description of problem:
Recently upgraded two Athlon boxes, both running 7.3, to the new
2.4.18-19.7.x-athlon kernels.  One runs fine.  The other boots fine (runlevel
3), but crashes (hard lock) when I try to run X (with the stock kernel binary)
or reboots the machine (with a custom-compiled kernel using your kernel-source
rpm).  The machine which works fine is an old 900MHz Athlon on an Asus A7 Pro
motherboard and uses an old ATI Rage-128 based video card.  The malfunctioning
box uses an IWill KK266 motherboard, and Athlon 1900+, and an ATI Radeon 7500
video board.  This latter machine worked fine for months with your old 2.4.18-3
i386 kernel custom-compiled for the Athlon; it also works fine, so far, without
a hitch using Linus' 2.4.20 kernel (retrieved from kernel.org).

Version-Release number of selected component (if applicable): 2.4.18-19.7.x
kernel binaries for Athlon; RedHat Linux 7.3 base system


How reproducible:
Always

Steps to Reproduce:
1. Reboot affected machine with the 2.4.18-19.7.x-athlon kernel (runlevel 3). 
2. startx
3. With the stock kernel binary, it simply crashes; with a custom-compile, it
reboots.
    

Actual Results:  see above.  Booting with the old 2.4.18-3 kernel (stock binary
or custom compiled) or Linus' 2.4.20 kernel resolves the issue.

Expected Results:  Normal operation

Additional info: