[Bug 255745] resume on T490 Thinkpad often broken after upgrade 12 -> 13

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 03 Dec 2021 14:09:41 UTC

--- Comment #28 from John Grafton <john.grafton@runbox.com> ---
I followed Warner's advice on debugging suspend/resume problems
(https://wiki.freebsd.org/DebuggingSuspendResume) and compiled and booted a
bare minimum kernel from the 'releng/13.0' branch. 

The suspend/resume problem no longer occurred.  Adding one driver at a time, I
found the problem began happening again after the sound driver.

I've been running a GENERIC kernel from the latest 'releng/13.0' with the sound
section commented out for the past few days without having a recurrence of the

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