Strange problem with ctwm, fedora40, and amdgpu

Hello everyone!

I got a Framework 16 (https://frame.work) this past summer, installed
Fedora 40, and configured ctwm (even getting the keys remapped and the
trackpad working the way I like).

It's been working great through the 6.10 kernels.  Then I upgraded to a
6.11 kernel and something strange happened...

When I boot into a 6.11 kernel and start Xorg-X11 with "startx",
everything seems to start up fine.  But once all the starup apps come up
(xdaliclock, gkrellm, xterm), then things kinda stop.

I can put the focux on an xterm window and type, but only one character
will appear.  However, as I move the mouse, other characters start
appearing.  Then I noticed that gkrellm wasn't updating every second
like it should.  But if I move the mouse, it will continue to update.
When the mouse stops, the screen stops updating.  So it seems like X is
getting "stuck" and only processes X events when it gets pointer-move
signals.  I've never seen this happen before.

When I boot back to a 6.10 kernel, everything is fine.  When I run Gnome
in xorg from the graphical.target booted system, everything is fine.

I also have Fedora 40 on a Dell laptop for work.  It is running a 6.11
kernel along with CTWM with no problems.

I also have a Gentoo server that runs CTWM in Xorg-X11 with no problems,
but it's still on kernel 6.6.

I've been running Linux from the beginning.  But X11 and the GUI is a
weak area of knowledge for me.  I'm not even sure where to look to get
debugging information.

Can anyone give me any advice where I can look for the problem, I would
greatly appreciate it.

Thank you.

-- 
-Mike
 Rident stolidi verba Latina.
                        -Ovid