[Bug 253801] graphics/drm-fbsd13-kmod panic when resuming from sleep

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253801

--- Comment #14 from Patricio Villar <patovm04 at gmail.com> ---
UPDATE: I think I finally made some progress to workaround this problem:

I used to have a little devd script that locked my screen when resuming from
sleep. It never did any harm on FreeBSD 11/12 so I didn't think it could be
problematic now, but it turns out it may have been the culprit... After all,
something definitely changed on 13.0.

What I did was modify the moment when this script was executed: instead of
becoming active at resume, it is now triggered when closing the lid (which
means, before suspend).

I don't want to assume this is the ultimate solution or something, especially
since so many assumptions have been made to this point, but so far it REALLY
seems to have fixed this issue for me.

I've had about 20+ successful and uninterrupted (this is, without shutting down
or rebooting in the middle) suspend/resume cycles without any issue. And I've
really tried to make it difficult to succeed by having multiple programs
running at the same time and stuff like that.

I don't know if some of you too have some kind of custom scripts that get
executed at resume time, but if that's the case, I encourage you to switch them
to run while going to sleep instead, or even drop them altogether, and see if
it makes a change for you.

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